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Photodissociation as a probe of the H$_3^+$ avoided crossing seam

T0 review · 4 major / 5 minor · reviewed 2026-08-14 · deepseek-v4-flash

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Pith's one-line read Photodissociation of internally hot H3+ in the near ultraviolet produces H2+ in its vibrational ground state while leaving H2 vibrationally hot, and the paper attributes this asymmetry to non-adiabatic transfer at an avoided crossing seam.

desk verdict New hot-H3+ photodissociation data are credible and the cold-H2+/hot-H2 pattern is plausible, but the model is fitted and overestimates v+=0 by 15-27 points, so treat the seam attribution as suggestive. read the letter →

arxiv 1908.03162 v1 pith:WOQPH4WB submitted 2019-08-08 physics.chem-ph

X. Urbain , A. Dochain , R. Marion , T. Launoy , J. Loreau This is my paper · ORCID
classification physics.chem-ph
keywords H3+photodissociationavoidedcrossingseamnon-adiabaticdynamicswavepacketpropagationkineticenergyreleasevibrationaldistributionchargetransferreactions
verification ladder T0 review T1 audit T2 compute T3 formal

The pith

A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.

The reading

The paper aims to show that the avoided crossing seam between the two lowest electronic states of H3+ is not a minor correction but the controlling feature of UV photodissociation for internally hot ions. Using three-dimensional product imaging at 266 and 300 nm, the authors measure a branching ratio of about 4:1 favoring H2+ + H over H2 + H+, find that the H2+ fragment is vibrationally cold while neutral H2 is vibrationally hot, and reproduce both observations with two-dimensional wavepacket dynamics on coupled adiabatic surfaces. If correct, the result establishes photodissociation as a half-collision probe of the same non-adiabatic seam that governs the astrophysically important H+ + H2 and H2+ + H charge-transfer reactions.

What carries the argument

The machinery is the avoided crossing seam between the two lowest 1A' potential energy surfaces of H3+, located at r about 2.5 bohr once the atom-diatom distance R exceeds about 6 bohr. The paper maps the seam's non-adiabatic coupling matrix elements, builds adiabatic surfaces, diabatises along the H2 vibrational coordinate at fixed R, and propagates two-dimensional wavepackets on the coupled surfaces. The wavepacket analysis projects the asymptotic flux onto H2 and H2+ vibrational eigenfunctions to obtain vibrational populations and branching fractions.

What would settle it

Photodissociate internally cold H3+ at 266 nm and measure the branching ratio and H2 vibrational distribution: if the H2 + H+ fraction and the hot v = 4–5 H2 distribution survive without excited starting states, the Condon-point and seam explanation would be wrong; alternatively, run a full-dimensional wavepacket from the true initial distribution and check whether ground-surface repopulation still appears.

Watch

Extended reading notes

Core claim

The paper's central claim is that, for H3+ ions with enough internal excitation to reach near the dissociation limit, absorption of a 266 or 300 nm photon launches a wavepacket on the repulsive first excited 1A' surface, and a seam of avoided crossings with the ground state redirects part of the flux back to the ground surface. The ground-surface channel then appears as H2 + H+ with H2 in high vibrational levels v = 4 and 5, while the adiabatic channel H2+ + H retains essentially cold H2+ (v+ = 0). Measurements of kinetic energy release, the ~4:1 branching ratio, and the vibrational distributions agree with two-dimensional wavepacket simulations on coupled diabatic surfaces, so the authors conclude that the avoided crossing seam, not a separate multiphoton path, governs how the excited ion falls apart.

Load-bearing premise

The whole interpretation rests on the assumption that a two-dimensional wavepacket starting from one guessed geometry, with the molecule frozen at a right angle, faithfully mimics the real mix of hot H3+ ions; if the real ions sample geometries outside that slice, the seam's role is not proven.

Editorial extensions

If this is right

  • At the two wavelengths studied, the dominant products are H2+(v+ = 0) + H, with branching fractions around 71–79% for the H2+ channel, while the H2 products are concentrated in v = 4 and 5.
  • The measured v+ = 0-dominated distribution can be reproduced by wavepacket dynamics only when the non-adiabatic coupling to the ground surface is included; the seam converts part of the excited-state flux into ground-state H2 + H+ products.
  • The required initial states sit about 0.83 eV (266 nm) and 0.6 eV (300 nm) below the dissociation limit, a tiny tail (~0.5%) of the nascent vibrational distribution, which explains the small apparent cross section observed in storage-ring experiments.
  • The same seam that governs this half-collision should control full-collision charge transfer between H and H2+ and between H+ and H2, making photodissociation a benchmark for the potential energy surfaces and non-adiabatic couplings used in astrochemical models.

Reading between the lines

Editorial extensions of the paper, not claims the author makes directly.

  • If the seam explanation is right, UV photodissociation spectra of H3+ act as a selective probe of the highly excited tail of the internal-state distribution: the kinetic energy release and v+ distribution directly map which quasi-bound levels sit near the dissociation threshold.
  • A full-dimensional simulation including the second excited surface (1B2) and all Jacobi angles would probably change the quantitative branching ratio, but the qualitative prediction—cold H2+ and hot H2—should survive if the seam is truly the controlling feature.
  • The reinterpretation of the intense-field D3+ data at 395 nm suggests that single-photon dissociation through the seam can compete with multiphoton pathways under strong fields, a testable distinction by measuring the intensity dependence of the branching ratio.
  • Astrochemical models that ignore photodissociation of vibrationally hot H3+ may underestimate UV destruction of H3+ in environments with internal excitation, shifting inferred cosmic-ray ionization rates.
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Editorial analysis

A structured set of objections, weighed in public.

Desk editor's note, referee report, and a circularity audit.

Referee Report

4 major / 5 minor

Summary. The paper reports an experimental and theoretical study of the ultraviolet photodissociation of hot H3+ at 266 nm and 300 nm. Using three-dimensional coincidence imaging, the authors measure kinetic energy release distributions and the branching ratio between the H2+ + H and H2 + H+ channels, and they determine the vibrational distribution of H2+ products via dissociative charge transfer. The measurements show that H2+ is produced predominantly in v+ = 0, and the authors infer from their two-dimensional wavepacket calculations that the H2 products are vibrationally hot (v = 4, 5). The ground-state H2 + H+ channel is attributed to non-adiabatic transfer at the avoided crossing seam between the two lowest 1A' potential energy surfaces. The manuscript closes by discussing the relevance of this seam for astrophysical charge-transfer reactions.

Significance. If the central claim holds, the work offers a new experimental window into the H3+ avoided crossing seam and connects photodissociation to the charge-transfer dynamics relevant to H+ + H2 and H + H2+ collisions. The experimental methodology is careful: kinetic energy release distributions, branching ratios, and H2+ vibrational populations are measured with quoted uncertainties, and the dissociative charge-transfer analysis provides a direct view of the product vibrational state. The qualitative pattern (cold H2+ and, as modeled, hot H2) is plausible and consistent with the known topology of the H3+ surfaces. However, the theoretical support is not yet quantitatively convincing, because the model input is adjusted to the measured kinetic energy release and no control calculation is reported. The paper is valuable as an experimental characterization of UV photodissociation of internally hot H3+, but the mechanistic attribution to the avoided crossing seam requires stronger theoretical evidence.

major comments (4)
  1. [Section 3.3, Eq. (7)] The wavepacket model is initialized at coordinates (R = 3.67 a0, r = 2 a0) for 266 nm and (R = 3.8 a0, r = 2 a0) for 300 nm, chosen so that the transition point matches the measured peak of the kinetic energy release distribution. In addition, the total energy E used in the Fourier projection of Eq. (7) is taken equal to the excited-state potential at that same initial point. The model input is therefore fitted to the observable it is invoked to explain, so the reported agreement does not provide independent evidence for the mechanism. A systematic sensitivity study or a treatment starting from a rovibrational wavefunction of H3+ would be needed to break this circularity.
  2. [Table I] The quantitative agreement between the wavepacket model and experiment is moderate at best. For H2+ v+ = 0, the computed populations are 88.0% versus 72(4)% measured at 266 nm and 89.9% versus 63(5)% at 300 nm. The computed branching fractions (70.9:29.1 and 71.5:28.5) also differ from the measured values (79(4):21(4) and 87(7):13(7)). Given these discrepancies, the statement in Section 3.3 that the vibrational distributions are in 'fair agreement' and the conclusion that the model accounts for the ground-state repopulation are not quantitatively established. The authors should provide a measure of the model uncertainty, for example by reporting results for a range of initial geometries and energies.
  3. [Section 3.3, Table I] No control calculation with the non-adiabatic coupling between the two surfaces turned off is reported, and the manuscript only states that nearby initial geometries give 'qualitatively similar conclusions' without presenting those results. Without such a control, the attribute of the H2 + H+ channel specifically to the avoided crossing seam is not demonstrated; it is possible that upper-surface dissociation alone, or a different choice of initial condition, could produce a similar branching ratio and vibrational distribution. The authors should report at least one calculation with the coupling set to zero and compare the resulting branching ratio and product distributions.
  4. [Section 3.2, Table I] The claim in the abstract and conclusion that photodissociation 'produces hot H2' is not directly measured. The experimental kinetic energy release distributions are interpreted with vibrational ladders assuming that the H2+ peak corresponds to v+ = 0, but no direct measurement of the H2 vibrational distribution is reported. The 'hot H2' conclusion rests entirely on the wavepacket calculation, which predicts H2(v = 4,5). This should be stated explicitly so that the reader can separate measured facts from model-inferred quantities.
minor comments (5)
  1. [Section 2] The phrase 'at distances R ¿ 6 a0' appears to contain a typographical error; it should likely read 'R < 6 a0' or equivalent.
  2. [Table I] The column header '58 nm' for the Kulander and Heller calculation is not explained in the table caption; a footnote stating that these are earlier theoretical results at a different wavelength would improve clarity.
  3. [Section 3.2] The sentence 'Integrated counts reflect the actual branching ratio' is ambiguous; please clarify whether the branching ratio is obtained from the total integrated counts in the two KER spectra or from separately normalized channel signals.
  4. [Section 3.3] The statement 'Both vibrational distributions are in fair agreement with experiment' is optimistic given the 16–27 percentage point difference for v+ = 0; a more quantitative statement including the uncertainties of the model would be appropriate.
  5. [Section 3.1] The experimental setup description mentions that the second detector is placed 10 cm downstream of the first, but the figure and text do not show how the active area and detection efficiency are calibrated; a brief note on the relative detection efficiency of the two detectors would strengthen the branching ratio measurements.

Circularity Check

1 steps flagged · score 4.0 of 10

Partial circularity: the wavepacket initial condition and Fourier energy are chosen from the measured KER, so the predicted cold-H2+ distribution partly echoes the input, while the hot-H2 populations and branching ratio remain independent outputs.

  1. fitted input called prediction [Section 3.2–3.3 (KER ladder assumption, Condon-point initial condition, Table I)]
    "Vibrational ladders are placed assuming the peak of the H2+ + H distribution coincides with v+ = 0, as discussed below. ... To identify the geometry where the initial wavepacket is defined on the excited potential energy surface, one may use the information provided by the KER and follow the principle illustrated by figure 5: the vertical transition from the ground to the first excited 1A′ surface must occur along a path corresponding to the so-called Condon point, where the potential energy difference matches the photon energy. ..."

    The starting coordinates (R=3.67 a0, r=2 a0 at 266 nm; R=3.8 a0, r=2 a0 at 300 nm) and the total energy E used in Eq. (7) are fixed by the measured KER: the Condon point is the geometry where the ground-to-excited energy difference matches the photon energy, and E is set to the 2 1A1 potential at that point. Since the KER ladder had already been placed by assuming the H2+ + H peak is v+ = 0, the subsequent wavepacket result that H2+ is cold (88.0% v+ = 0 at 266 nm and 89.9% at 300 nm in Table I) partly restates the input assumption rather than independently deriving it. The H2(v=4,5) populations and the branching ratio are not fixed by this input and remain genuine outputs, so the circularity is partial.

full rationale

The paper is not fundamentally circular: the experimental KER and vibrational distributions are measured by independent methods, the potential energy surfaces and non-adiabatic couplings are ab initio, and the central attribution of the H2+H+ channel to the avoided crossing seam rests on a wavepacket calculation whose H2 vibrational distribution and branching ratio are genuine outputs. No load-bearing uniqueness theorem or self-citation chain is invoked; self-citations such as [4], [17], and [27] are motivational or methodological. However, there is one genuine fitted-input issue: the wavepacket is launched from a Condon point selected using the measured KER, and the Fourier energy E is set to the upper-surface potential at that point. Because the KER ladder was itself interpreted assuming the H2+ + H peak corresponds to v+ = 0, the model's quantitative prediction that H2+ is cold is partly an echo of the input, not a fully independent derivation. The independent dissociative charge-transfer measurement of the H2+ vibrational distribution supports the cold-H2+ conclusion, and the H2(v=4,5) hot distribution and branching ratio are not forced by the initial condition, so the central claim retains substantial independent content. A missing control without non-adiabatic coupling is a completeness concern rather than a circularity.

Assumptions & free parameters 3 free parameters · 4 assumptions · 0 invented entities

The paper's interpretation of the repopulation of the ground surface depends on the accuracy of the ab initio PES and coupling elements, the adequacy of the 2D C2v model, and the assumed source internal-energy distribution. The model's input includes two starting coordinates and a total energy chosen from the measured KER, so the model explains the observable it was tuned to.

free parameters (3)
  • initial R of the wavepacket = 3.67 a0 at 266 nm; 3.8 a0 at 300 nm
    Chosen so the vertical transition energy matches the photon at the Condon point; derived from the measured kinetic energy release peak.
  • initial r of the wavepacket = 2.0 a0 at both wavelengths
    Together with R, locates the initial Gaussian on the upper surface; not derived from a quantum state of H3+.
  • total energy E in the Fourier projection = potential energy of the 2 1A1 state at the initial position
    Stated as 'somewhat arbitrary' in Section 3.3; used to project vibrational populations from the wavepacket.
assumptions (4)
  • domain assumption The CASSCF+Full CI potential energy surfaces and NACME are accurate enough for the dynamics.
    The surfaces are generated by the authors with MOLPRO; validation is only against previous calculations [18,19], not against experimental spectra.
  • domain assumption C2v symmetry (Jacobi angle 90 degrees) is adequate for the dissociation dynamics.
    Section 2 acknowledges the validity is 'expected to be somewhat limited' because H3+ is floppy above the barrier to linearity; the wavepacket model fixes this angle.
  • domain assumption The nascent internal-energy distribution of H3+ from the ion source follows the statistical model of Anicich and Futrell.
    Section 3 uses this distribution to estimate the hot tail that photodissociates; it is not directly measured in this experiment.
  • domain assumption The transition dipole matrix element is treated in a simplified way.
    Section 3.3 mentions multiplication by the dipole matrix element, but does not specify the dipole surface or its approximation.

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Pith. "Pith review of Photodissociation as a probe of the H$_3^+$ avoided crossing seam." pith.science (2026). https://pith.science/paper/WOQPH4WB

@misc{pith2026190803162,
  author       = {Pith},
  title        = {Pith review of: Photodissociation as a probe of the H$_3^+$ avoided crossing seam},
  year         = {2026},
  howpublished = {\url{https://pith.science/paper/WOQPH4WB}},
  note         = {Machine review of arXiv:1908.03162}
}
abstract

Experiments are conducted to investigate the role of the avoided crossing seam in the photodissociation of H$_3^+$. Three-dimensional imaging of dissociation products is used to determine the kinetic energy release and branching ratio among the fragmentation channels. Vibrational distributions are measured by dissociative charge transfer of H$_2^+$ products. It is found that the photodissociation of hot H$_3^+$ in the near ultraviolet produces cold H$_2^+$, but hot H$_2$. Modelling the wavepacket dynamics along the repulsive potential energy surface accounts for the repopulation of the ground potential energy surface. The role of the avoided crossing seam is emphasized and its importance for the astrophysically relevant charge transfer reactions is underlined.

Figures

Figures reproduced from arXiv: 1908.03162 by the authors.

Figure 1
Figure 1. FIG. 1: Adiabatic potential energy surfaces of the two first [PITH_FULL_IMAGE:figures/full_fig_p002_1.png] view at source ↗
Figure 2
Figure 2. FIG. 2: Statistical population of ( [PITH_FULL_IMAGE:figures/full_fig_p003_2.png] view at source ↗
Figure 3
Figure 3. FIG. 3: Experimental set-up. EL: Einzel lens, DEFL: electro [PITH_FULL_IMAGE:figures/full_fig_p004_3.png] view at source ↗
Figures from the paper (3 more)
Figure 4
Figure 4. Figure 4: FIG. 4: Measured kinetic energy release distributions for t [PITH_FULL_IMAGE:figures/full_fig_p004_4.png]
Figure 5
Figure 5. Figure 5: FIG. 5: Schematic representation of the UV excitation from [PITH_FULL_IMAGE:figures/full_fig_p005_5.png]
Figure 6
Figure 6. Figure 6: FIG. 6: Contour lines marking the region where the sepa [PITH_FULL_IMAGE:figures/full_fig_p006_6.png]

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Works this paper leans on

41 extracted references · 41 canonical work pages

  1. [1]

    INTRODUCTION The molecular ion H + 3 plays a pivotal role in many astrophysical environments [1, 2]. In the interstellar medium, H + 3 acts as a proton donor and provides the main path towards the formation of hydrides through the reaction H + 3 + M → H2 + MH +, which in turn leads to a sequence of ion-neutral reactions. H + 3 is also a key species to und...

    work page

  2. [2]

    We shall discuss it here in terms of Jacobi coordinates r, R and θ

    THE A VOIDED CROSSING SEAM The potential energy surfaces of the H + 3 molecular ion are known to exhibit a rich topology, which results from the high degree of symmetry imposed by the indiscerni- bility of the protons, and the asymptotic degeneracy of its fragmentation channels that stems from it. We shall discuss it here in terms of Jacobi coordinates r,...

    work page

  3. [3]

    In their seminal work on time- dependent wavepacket propagation, Kulander and Heller

    ULTRA VIOLET PHOTODISSOCIATION OF H+ 3 Photodissociation, being essentially a half-collision process, offers a convenient probe of the long-range dynamics without the impact parameter averaging im- posed by full collisions. In their seminal work on time- dependent wavepacket propagation, Kulander and Heller

    work page

  4. [4]

    Such wavelengths mainly probe the photodissociation from ex- cited vibrational states of H + 3 that are populated follow- ing its formation in the ion source plasma

    CONCLUSION We have carried out an experimental study of the UV photodissociation of H + 3 towards H 2 + H + and H + 2 + H channels at wavelengths of 266 nm and 300 nm. Such wavelengths mainly probe the photodissociation from ex- cited vibrational states of H + 3 that are populated follow- ing its formation in the ion source plasma. The pho- todissociation...

    work page

  5. [5]

    Karpas Z, Anicich V, Huntress Jr WT 1979 An ion cy- clotron resonance study of reactions of ions with hydro- gen atoms J. Chem. Phys. 70 2877-2881

    work page 1979

  6. [6]

    Tennyson, Rep

    J. Tennyson, Rep. Prog. Phys. 58, 421 (1995)

    work page 1995

  7. [7]

    Oka Chem

    T. Oka Chem. Rev. 113, 8738 (2013)

    work page 2013

  8. [8]

    Kusakabe T, Pichl L, Buenker RJ, Kimura M, Tawara H 2004 Isotope effect in charge-transfer collisions of slow H+ and D + ions with H 2, HD, and D 2 molecules Phys. Rev. A 70 052710

    work page 2004

Show all 41 references
  1. [9]

    Urbain X, de Ruette N, Andrianarijaona VM, Mar- tin MF, Fern´ andez Menchero L, Errea L, M´ endez L, Rabad´ an I, Pons B 2013 New Light Shed on Charge Transfer in Fundamental H ++ H 2 Collisions Phys. Rev. Lett. 111 203201

    2013

  2. [10]

    Viegas LP, Alijah A, Varandas AJ 2007 Accurate ab ini- tio based multisheeted double many-body expansion po- tential energy surface for the three lowest electronic sin- glet states of H + 3 J. Chem. Phys. 126 074309, and refer- ences therein

    2007

  3. [11]

    Andrianarijaona VM, Rada JJ, Rejoub R, Havener CC 2009 Investigation of charge transfer in low energy D + 2 + H collisions using merged beams J. Phys. Conf. Ser. 194 012043

    2009

  4. [12]

    von Busch F, Dunn GH 1972 Photodissociation of H + 2 and D + 2 : Experiment Phys. Rev. A 5 1726

    1972

  5. [13]

    Krsti´ c PS 2002 Inelastic processes from vibrationally ex- cited states in slow H + + H 2 and H + H + 2 collisions: Excitations and charge transfer Phys. Rev. A 66 042717

    2002

  6. [14]

    Carrington A, Kennedy RA 1984 Infrared predissociation spectrum of the H + 3 ion J. Chem. Phys. 81 91-112

    1984

  7. [15]

    Ichihara A, Yokoyama K 1995 Ab initio potential energy surfaces for the two lowest 1A′ states of H + 3 J. Chem. Phys.103 2109-2112

    1995

  8. [16]

    Pavanello M, Adamowicz L, Alijah A, Zobov NF, Mizus II, Polyansky OL, Tennyson J, Szidarovszky T, Cs´ asz´ ar AG 2012 Calibration-quality adiabatic potential energy surfaces for H + 3 and its isotopologues J. Chem. Phys. 136 184303

    2012

  9. [17]

    R¨ ohse R, Kutzelnigg W, Jaquet R, Klopper W 1994 Po- tential energy surface of H + 3 ground state in the neigh- borhood of the minimum with micro-Hartree accuracy vibrational frequencies derived from it J. Chem. Phys. 101 2231-2243

    1994

  10. [18]

    Preston RK, Tully JC 1971 Effects of surface crossing in chemical reactions: the H + 3 system J. Chem. Phys. 54 4297-4304

    1971

  11. [19]

    Bauschlicher Jr CW, O’Neil SV, Preston RK, Schaefer III HF, Bender CF 1973 Avoided intersection of potential energy surfaces: The (H ++ H2, H+ H + 2 ) system J. Chem. Phys. 59 1286-1292

    1973

  12. [20]

    The cross section was found to peak around 21 eV, rendering the photodissoci- ation of H + 3 in astrophysical environments rather unlikely [21]

    have computed the photodissociation cross section for H+ 3 in its absolute ground state. The cross section was found to peak around 21 eV, rendering the photodissoci- ation of H + 3 in astrophysical environments rather unlikely [21]. The calculation included the first 1B2 poten...

  13. [21]

    2012 MOLPRO: a general-purpose quantum chem- istry program package

    Werner HJ, Knowles PJ, Knizia G, Manby FR, Sch¨ utz M, et al. 2012 MOLPRO: a general-purpose quantum chem- istry program package

    2012

  14. [22]

    Loreau J, Li´ evin J, Palmeri P, Quinet P, Vaeck N 2010 Ab initio calculation of the 66 low-lying electronic states of HeH +: adiabatic and diabatic representations J. Phys. B: At. Mol. Opt. Phys. 43 065101

    2010

  15. [23]

    Barrag´ an P, Errea LF, Mac ´ ıas A, M´ endez L, Rabad´ an I, Riera A, Lucas JM, Aguilar A 2004 Study of ab initio molecular data for inelastic and reactive collisions invol v- ing the H + 3 quasimolecule J. Chem. Phys. 121 11629

    2004

  16. [24]

    Barrag´ an P, Errea LF, Mac ´ ıas A, M´ endez L, Rabad´ an I, Riera A 2006 A study of conical intersections for the H + 3 system J. Chem. Phys. 124 184303

    2006

  17. [25]

    Kulander KC, Heller EJ 1978 Time dependent formula- tion of polyatomic photofragmentation: Application to H+ 3 J. Chem. Phys. 69 2439-2449

    1978

  18. [26]

    In Symposium-International As- tronomical Union 120 51-65, Cambridge University 8 Press

    van Dishoeck EF 1987 Photodissociation processes of as - trophysical molecules. In Symposium-International As- tronomical Union 120 51-65, Cambridge University 8 Press

    1987

  19. [27]

    Bae YK, Cosby PC 1990 Observation of bound-free pho- todissociation of H + 3 Phys. Rev. A 41 1741

    1990

  20. [28]

    Anicich VG, Futrell JH 1984 A computer study of the formation of H + 3 and its vibrational deactivation using a statistical model International journal of mass spectrom- etry and ion processes 55 189-215

    1984

  21. [29]

    Alexander JD, Calvert CR, King RB, Kelly O, Graham L, Bryan W A, Nemeth GRAJ , Newell WR, Froud CA, Turcu ICE, Springate E, Williams ID, Greenwood JB 2009 Photodissociation of D + 3 in an intense, femtosecond laser field J. Phys. B: At. Mol. Opt. Phys. 42 141004

    2009

  22. [30]

    Sayler AM, McKenna J, Gaire B, Kling NG, Carnes KD, Ben-Itzhak I 2012 Measurements of intense ultra- fast laser-driven D + 3 fragmentation dynamics Phys. Rev. A 86 033425

    2012

  23. [31]

    Petrignani A, Bing D, Novotny O, Berg MH, Buhr H, Grieser M, Jordon-Thaden B, Krantz C, Mendes MB, Menk S, Novotny S, Orlov DA, Repnow R, St¨ utzel J, Urbain X and Wolf A 2010 Ultraviolet and Visible Light Photodissociation of H + 3 in an Ion Storage Ring J. Phys. Chem. A 114 ...

    2010

  24. [32]

    Urbain X, Fabre B, Staicu-Casagrande EM, de Ruette N, Andrianarijaona VM, Jureta J, Posthumus JH, Saenz A, Baldit E, Cornaggia C 2004 Intense-laser-field ionization of molecular hydrogen in the tunneling regime and its effect on the vibrational excitation of H + 2 Phys. Rev. Let...

    2004

  25. [33]

    De Bruijn DP, Neuteboom J, Los J 1984 Predissociation of the c 3Π u state of H 2, populated after charge exchange of H + 2 with several targets at keV energies Chem. Phys. 85 233-251

    1984

  26. [34]

    Gaire B, McKenna J, Zohrabi M, Carnes KD, Esry BD, Ben-Itzhak I 2012 Dynamics of D + 3 slow dissociation in- duced by intense ultrashort laser pulses Phys. Rev. A 85 023419

    2012

  27. [35]

    I: Closed quantum systems and discrete variable representations Comput

    Schmidt B, Lorenz U 2017 WavePacket: A Matlab pack- age for numerical quantum dynamics. I: Closed quantum systems and discrete variable representations Comput. Phys. Comm. 213 223-234

    2017

  28. [36]

    Balint-Kurti GG, Dixon RN, Marston CC 1990 Time- dependent quantum dynamics of molecular photofrag- mentation processes. J. Chem. Soc. Faraday Trans. 86 1741-1749

    1990

  29. [37]

    Alijah A, Fremont J, Tyuterev VG 2015 Quantized nona- diabatic coupling terms of H + 3 Phys. Rev. A 92 012704

    2015

  30. [38]

    Mukherjee B, Mukherjee S, Adhikari S 2016 Ab-initio non-adiabatic couplings among three lowest singlet states of H + 3 : Construction of multisheeted diabatic potential energy surfaces Journal of Physics: Conference Series 759 012050

    2016

  31. [39]

    Sun Z, Yang C, Zheng Y 2015 Laser-induced dissocia- tion dynamics of triatomic molecule in electronic excited states: A full-dimensional quantum mechanics study J. Chem. Phys. 143 224309

    2015

  32. [40]

    Errea LF, Fern´ andez L, M´ endez L, Pons B, Rabad´ an I, Riera A 2007 Vibronic treatment of vibrational excitation and electron capture in H + + H 2 (HD, D 2) collisions at low impact energies Phys. Rev. A 75 032703

    2007

  33. [41]

    Munro JJ, Ramanlal J, Tennyson J 2005 Asymptotic vi- brational states of the H + 3 molecular ion New J. Phys. 7 196

    2005

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