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REVIEW 3 major objections 7 minor 1 cited by

Vibrational sensing at mK temperatures in dry dilution refrigerators using commercial accelerometers for diverse fundamental physics applications

T0 review · 3 major / 7 minor · reviewed 2026-08-03 · deepseek-v4-flash

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Pith's one-line read Commercial accelerometers detect pulse-tube vibrations at 8 mK

desk verdict Useful feasibility study, but the claim of demonstrated vibration sensitivity at 8 mK is undercut by the lack of calibration and the possibility of cable/triboelectric artifacts. read the letter →

arxiv 2601.08817 v2 pith:73P76UAD submitted 2026-01-13 physics.ins-det hep-exnucl-ex

N. Brace , A. D'Addabbo , S. D'Eramo , S.H. Fu , M.T. Hurst , T. O'Donnell , S. Petti , V. Sharma
show 4 more authors
P. T. Surukuchi A. Torres K. J. Vetter C. Wengappuliarachchige
This is my paper · ORCID
classification physics.ins-dethep-exnucl-ex
keywords dilutionrefrigeratorvibrationmonitoringpulse-tubecryocoolercryogenicaccelerometermillikelvinwitnesschannelradioassaynoisecancellation
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 seeks to establish that small, off-the-shelf piezoelectric accelerometers can be placed directly on the coldest stage of a dry dilution refrigerator and still produce meaningful vibration spectra at temperatures down to 8 mK. The measured spectra show sharp peaks at the pulse-tube cryocooler's fundamental frequency and its harmonics, with the response stable over a wide temperature range and over five hours. Because such refrigerators are now standard in particle physics and quantum computing, a cheap, low-mass vibration witness channel on the mixing-chamber plate would allow continuous, real-time noise monitoring and data denoising. The paper also reports a radioassay of the accelerometers, finding their intrinsic radioactivity acceptable for most cryogenic experiments, with only a modest activity from the uranium decay chain. A sympathetic reader would take the paper's claim to be a feasibility demonstration: commercial sensors can sense vibrations at millikelvin temperatures, provided the cabling and mounting are engineered to limit heat load and electrical noise.

What carries the argument

The load-bearing object is a compact (about 27 g) piezoelectric accelerometer with a stated charge sensitivity of 11.5 pC/g and a nominal operating range down to 4 K, together with a charge-to-voltage signal conditioner and a digitizer. The authors replace the as-supplied cable with short, low-mass niobium-titanium leads to keep the mixing chamber at its 8 mK base temperature, and they electrically isolate the accelerometer bodies from the copper mounting block with Kapton film to suppress discharge spikes. The primary observable is the average noise power spectrum, computed from 10-second FFT windows and averaged; the decisive feature is the appearance of pulse-tube harmonics in that spectr

What would settle it

Mount a non-piezoelectric dummy mass with identical cabling, conditioning, and analysis in place of one accelerometer: if the pulse-tube harmonics still appear in the spectrum at 8 mK, the signal is electrical pickup, not vibration. Alternatively, an absolute calibration with a known shaker at millikelvin temperatures that reproduces the expected sensitivity would confirm the mechanical origin.

Watch

Extended reading notes

Core claim

On the paper's own terms, the central result is that a triaxial set of three commercially available piezoelectric accelerometers, mounted on the mixing-chamber plate of a cryogen-free dilution refrigerator, produce average noise power spectra at 8 mK that clearly resolve the pulse-tube cryocooler's fundamental drive frequency (1.4 Hz) and its next nine harmonics. The same spectral features appear across mixing-chamber temperatures from 15 mK to about 1 K and persist for consecutive hours at 8 mK, while they disappear when the pulse tube is switched off. From this, the authors conclude that off-the-shelf accelerometers remain vibration-sensitive at millikelvin temperatures and can act as witn

Load-bearing premise

The load-bearing premise is that the voltage fluctuations measured at 8 mK are mechanical vibrations of the mixing-chamber plate rather than electrical or triboelectric artifacts in the uncalibrated accelerometer-cable chain; the paper itself notes the lack of absolute calibration and identifies triboelectric effects as a likely major noise contributor.

Editorial extensions

If this is right

  • Continuous, in-situ vibration monitoring of dry dilution refrigerators becomes practical with minimal heat load, since the low-mass wiring keeps the mixing chamber at base temperature.
  • Pulse-tube vibrations reach the mixing-chamber plate in all three spatial directions, so witness channels can capture both vertical and radial motion.
  • The demonstrated coherence between cryogenic and room-temperature accelerometers enables transfer-function-based denoising of vibration-sensitive detectors.
  • The accelerometers' radioactivity is low enough for most cryogenic experiments, though rare-event searches may need shielding against the reported uranium-chain activity.
  • The operation at 8 mK extends the useful range of commercial accelerometers beyond their nominal 4 K rating.

Reading between the lines

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

  • I would read the uncalibrated spectra as a proof of mechanical sensitivity only if the measured voltage peaks are not dominated by electrical or triboelectric pickup in the cable chain; a dummy-mass control run with identical cabling would settle this directly.
  • With absolute calibration against a known shaker, the same setup could deliver quantitative vibration amplitudes, turning a relative monitor into a metrology tool for comparing cryostat designs.
  • The same witness-channel approach could be transferred to quantum computing platforms, where pulse-tube vibrations are known to induce correlated qubit errors; real-time denoising might improve coherence times.
  • Since the authors attribute the dominant noise to triboelectric effects, the accelerometer itself is probably not the sensitivity bottleneck; cable and mounting engineering may be the key to reaching lower vibration floors.
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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

3 major / 7 minor

Summary. This paper evaluates three commercial Endevco 2271A piezoelectric accelerometers mounted in a triaxial configuration on the mixing-chamber (MC) plate of a Bluefors LD400 dry dilution refrigerator, operating at temperatures down to 8 mK. The authors report averaged noise power spectra showing pulse-tube (PT) harmonics, PT on/off comparisons, response stability from 15 mK to 1 K and over five hours at 8 mK, and a coherence/transfer-function analysis between the cryogenic accelerometers and 300 K reference accelerometers. They also present an HPGe radioassay of the accelerometers, finding a 226Ra excess at 186 keV and upper limits for 40K and 232Th. The central claim is that off-the-shelf commercial accelerometers remain sensitive to mechanical vibrations at mK temperatures, enabling continuous in-situ vibration monitoring and denoising for cryogenic experiments.

Significance. If confirmed, the result is useful and timely: a low-mass, commercial, cryogenic accelerometer on the MC plate would allow continuous vibration monitoring and denoising for bolometric calorimeters, quantum devices, and other mK experiments. The paper is well motivated, the setup is described in detail, and the thermal-management and radioassay sections address practical deployment issues. The main strength is the direct, systematic exploration of an off-the-shelf sensor at temperatures well below the manufacturer's 4 K rating. However, the central claim currently rests on an uncalibrated measurement in which triboelectric and electromagnetic pickup are acknowledged as likely major noise contributors; the data are valuable as an environmental characterization, but the word 'demonstrates' in the abstract and Sec. 3 overstates what is established.

major comments (3)
  1. [Sec. 3, Fig. 5; Sec. 5] The central claim that Fig. 5 'demonstrat[es] that the accelerometers are sensitive to vibrations at 8 mK' is stronger than the evidence supports. The signal path is explicitly uncalibrated (Sec. 2: 'all accelerometer data are reported in arbitrary units and are intended for comparison only'), and Sec. 5 states that 'primary sources of noise stem from electronic interference and environmental signals within the accelerometer-cable assembly, with triboelectric effects emerging as the likely major contributor.' PT on/off contrast and the 1.4 Hz harmonic series are also expected for cable triboelectric pickup and electromagnetic pickup from the PT motor/compressor, so they do not by themselves isolate mechanical strain in the piezoelectric element. The coherence with the 393B31 in Fig. 10 is supportive but not conclusive, since both channels share the PT-driven environment and the reference
  2. [Sec. 2; Sec. 3] Without absolute calibration, the vertical/radial transmission statement in Sec. 3 ('vibrations transmit to the MC plate both in the vertical and radial directions') is only a statement about relative channel outputs. The equal gains on the three 2271A channels permit axis-to-axis comparisons, but the absence of a known vibration source means no acceleration magnitude, frequency-response flatness, or cross-axis sensitivity can be inferred. Please state this explicitly and avoid 'sensitivity' language, or provide a calibration transfer measurement.
  3. [Sec. 4, Table 1, Fig. 9] The 186-keV 226Ra analysis is internally inconsistent: the fit-based excess in Table 1 corresponds to 0.9±0.4 Bq/kg, while the simple 183–188 keV counting described in the text gives 2.0±0.8 Bq/kg, and the text acknowledges the yield depends on the fit range. Since the radioassay is used to report a specific 238U activity, please adopt a single analysis with a pre-defined ROI, quantify the range-choice systematic, and address the 222Rn background variability.
minor comments (7)
  1. [Sec. 2, Fig. 3] The caption says 'Rolling' for the smoothed data; specify whether the 0.5 s rolling average is causal or centered, and clarify how the subtraction is applied to the time series.
  2. [Sec. 2] Typo: 'to the the 300 K plate' should read 'to the 300 K plate'.
  3. [Sec. 3, Fig. 5] The y-axis label 'ANPS (a.u.)' is used although the underlying data are voltages; define the ANPS units and normalization explicitly.
  4. [Sec. 4] Typos: 'Weseenoevidence' is missing a space; 'equillibrium' should be 'equilibrium'.
  5. [Sec. 4] The K2SO4 cross-check reports a high-energy ratio of 0.726±0.015, while at 121 keV the measured efficiency is 55% of simulation. Please explain how this low-energy discrepancy is propagated into the systematic uncertainty on the 186-keV efficiency used in Table 1.
  6. [Sec. 5, Eqs. (5.1)–(5.4)] The denoising use case is illustrative only; no quantitative denoising performance is shown in this paper. Either add a concrete metric (e.g., reduction in noise power at PT harmonics) or label the demonstration as a future-work sketch.
  7. [Sec. 5] The statement about 'preliminary results using a different cryostat' and the planned anodized-aluminum mounting blocks is not supported by data in this manuscript; consider moving this to the outlook/future-work paragraph.

Circularity Check

0 steps flagged · score 0.0 of 10

No significant circularity: central claim is an empirical measurement, not a derivation from fitted inputs or self-cited uniqueness.

full rationale

The paper's central claim—that the 2271A accelerometers respond to PT operation at the MC plate at 8 mK—is presented directly as measured ANPS spectra with PT-on/PT-off contrast (Fig. 5), not as a quantity derived from a fitted parameter or from a self-cited theorem. No equation in the paper defines the measured harmonic peaks in terms of the conclusion being drawn. The coherence/transfer-function analysis in Sec. 5 follows the procedure of Ref. [31], which has overlapping authorship, but this methodological citation is not load-bearing: the feasibility conclusion does not depend on the denoising demonstration, and the TF analysis is presented as a possible application rather than as evidence for the sensor's basic sensitivity. The radioassay section uses a GEANT4 simulation with an efficiency correction calibrated against certified point sources and a certified K2SO4 sample; this is a calibration procedure, not circular prediction. The paper explicitly acknowledges the uncalibrated nature of the data ('Since we did not perform an absolute calibration against a known vibration source, all accelerometer data are reported in arbitrary units and are intended for comparison only,' Sec. 2) and identifies triboelectric/electronic noise as limitations (Sec. 5). Those are validity threats to the mechanical-vibration interpretation, but they are not instances of circular derivation. No load-bearing step reduces to its own inputs by construction, so the circularity score is 0.

Assumptions & free parameters 2 free parameters · 5 assumptions · 0 invented entities

The main feasibility claim is an empirical measurement with no fitted model. The radioassay relies on a calibration-derived correction factor and several geometric/equilibrium assumptions. The central claim does not introduce new entities or ad hoc parameters.

free parameters (2)
  • HPGe simulation efficiency correction factor = 0.711 ± 0.036 (measured/simulated efficiency ratio; 0.726 ± 0.015 from K2SO4 check)
    Applied to simulated efficiencies for the accelerometer radioactivity estimates; derived from point-source calibration data, not fitted to the target sample, but it propagates into the 238U activity claim.
  • Low-energy systematic uncertainty below 200 keV = not numerically quantified
    The paper states an additional systematic error is applied below 200 keV without giving a value; this affects the 186-keV 226Ra activity estimate.
assumptions (5)
  • domain assumption The 2271A accelerometer output at mK temperatures is dominated by mechanical acceleration of the MC plate, not by triboelectric or electromagnetic pickup in the cables.
    Sec. 5 admits triboelectric effects as a likely major noise contributor; the PT on/off comparison in Fig. 5 supports a mechanical component but cannot exclude electrical artifacts, so the entire vibration claim rests on this interpretation.
  • domain assumption The accelerometer sensitivity and frequency response do not change catastrophically between 300 K and 8 mK.
    Sec. 2 states no absolute calibration was performed against a known vibration source; the response appears stable across temperatures, but the absolute scale and frequency response at mK are unverified.
  • domain assumption HPGe simulation geometry, with accelerometers approximated as stainless steel cylinders, combined with the measured point-source correction factor, models the detection efficiency.
    Sec. 4; the 0.711 correction makes the simulation match point-source data, but geometry and dead-layer uncertainties remain, especially below 200 keV.
  • domain assumption The 186-keV excess is attributed to 226Ra in secular equilibrium with 238U in the accelerometer samples.
    Sec. 4; the paper notes the 222Rn background can vary and the ROI fit depends on the chosen range; an alternative counting window gives a different activity, so equilibrium and background assumptions are load-bearing for the radioassay result.
  • standard math Standard FFT, cross-spectral density, coherence, and transfer-function denoising analysis (Eqs. 5.1–5.4) is applicable to these data.
    The analysis imports the algorithm from Ref. [31]; this is standard signal processing and is not central to the feasibility claim.

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Cite this review

Pith. "Pith review of Vibrational sensing at mK temperatures in dry dilution refrigerators using commercial accelerometers for diverse fundamental physics applications." pith.science (2026). https://pith.science/paper/73P76UAD

@misc{pith2026260108817,
  author       = {Pith},
  title        = {Pith review of: Vibrational sensing at mK temperatures in dry dilution refrigerators using commercial accelerometers for diverse fundamental physics applications},
  year         = {2026},
  howpublished = {\url{https://pith.science/paper/73P76UAD}},
  note         = {Machine review of arXiv:2601.08817}
}
read the original abstract

This article presents an evaluation of off-the-shelf commercial accelerometers at the mixing chamber stage of a cryogen-free dilution refrigerator at temperatures down to 8 mK. In addition, we present results of radioassay of accelerometers using a high purity germanium detector counting setup. Cryogen-free dilution refrigerators using pulse-tube cryocoolers (PTs) -- due to recent advances in their cooling capacity, long-term stability, and operational costs -- have become ubiquitous tools in a wide range of fields ranging from experimental particle physics to quantum information sciences. However, vibrations induced by PTs can negatively impact the experimental payload in these applications. This work demonstrates that commercially available accelerometers can not only measure vibrations at millikelvin cryogenic temperatures but also pave the way for continuous, in situ, real-time vibration monitoring of dry dilution refrigerators. This monitoring capability facilitates applications such as real-time denoising for vibration-sensitive experiments, thereby enabling ongoing noise assessment and mitigation.

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Forward citations

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Reference graph

Works this paper leans on

28 extracted references · 8 linked inside Pith · cited by 1 Pith paper

  1. [3]

    Auguste et al.,A novel mechanical design of a bolometric array for the CROSS double-beta decay experiment,JINST19(2024) P09014 [2405.18980]

    D. Auguste et al.,A novel mechanical design of a bolometric array for the CROSS double-beta decay experiment,JINST19(2024) P09014 [2405.18980]. [4]AMoREcollaboration,Improved Limit on Neutrinoless Double Beta Decay of Mo100 from AMoRE-I, Phys. Rev. Lett.134(2025) 082501 [2407.05618]. [5]Ricochetcollaboration,Ricochet Progress and Status,J. Low Temp. Phys....

    arXiv 2024

  2. [7]

    Gastaldo et al.,The electron capture in163Ho experiment – ECHo,Eur

    L. Gastaldo et al.,The electron capture in163Ho experiment – ECHo,Eur. Phys. J. ST226(2017) 1623

    2017

  3. [8]

    Faverzani et al.,The HOLMES Experiment,J

    M. Faverzani et al.,The HOLMES Experiment,J. Low Temp. Phys.184(2016) 922. [9]SuperCDMScollaboration,Projected Sensitivity of the SuperCDMS SNOLAB experiment,Phys. Rev. D95(2017) 082002 [1610.00006]. [10]CRESSTcollaboration,First results from the CRESST-III low-mass dark matter program,Phys. Rev. D100(2019) 102002 [1904.00498]. [11]EDELWEISScollaboration,...

    arXiv 2016

  4. [12]

    Enss, ed.,Cryogenic Particle Detection, vol

    C. Enss, ed.,Cryogenic Particle Detection, vol. 99 ofTopics in Applied Physics, Springer, Berlin, Germany (2005), 10.1007/b12169

    doi:10.1007/b12169 2005

  5. [13]

    Cousins, S.N

    D. Cousins, S.N. Fisher, A. Guénault, R. Haley, I. Miller, G. Pickett et al.,An advanced dilution refrigerator designed for the new lancaster microkelvin facility,Journal of low temperature physics 114(1999) 547. [14]CUOREcollaboration,Constraints on Lepton Number Violation with the 2 tonne·yr CUORE Dataset, Science390(2025) 1029 [2404.04453]

    arXiv 1999

  6. [15]

    Hollister, R.C

    M.I. Hollister, R.C. Dhuley, C. James and G.L. Tatkowski,An update on the Colossus mK platform at Fermilab,IOP Conf. Ser. Mater. Sci. Eng.1302(2024) 012030. – 13 – [16]Ricochetcollaboration,Characterization of mini-CryoCube detectors from the RICOCHET experiment commissioning at the Institut Laue-Langevin,Phys. Rev. D112(2025) 112019 [2507.22751]. [17]CUO...

    arXiv 2024

  7. [18]

    S. Kono, J. Pan, M. Chegnizadeh, X. Wang, A. Youssefi, M. Scigliuzzo et al.,Mechanically induced correlated errors on superconducting qubits with relaxation times exceeding 0.4ms,Nature Commun. 15(2024) 3950 [2305.02591]

    arXiv 2024

  8. [19]

    Lee, H.S

    C. Lee, H.S. Jo, C.S. Kang, G.B. Kim, I. Kim, S.R. Kim et al.,Vibration isolation system for cryogenic phonon-scintillation calorimeters,JINST12(2017) C02057

    2017

Show all 28 references
  1. [20]

    Wex et al.,Decoupling pulse tube vibrations from a dry dilution refrigerator at milli-Kelvin temperatures,JINST20(2025) P05022 [2501.04471]

    A. Wex et al.,Decoupling pulse tube vibrations from a dry dilution refrigerator at milli-Kelvin temperatures,JINST20(2025) P05022 [2501.04471]

    2025

  2. [21]

    Kellermann et al.,A Vibration Decoupling System for TES Operation in the COSINUS Dry Dilution Refrigerator,J

    M. Kellermann et al.,A Vibration Decoupling System for TES Operation in the COSINUS Dry Dilution Refrigerator,J. Low Temp. Phys.217(2024) 418. [22]CUPIDcollaboration,A first test of CUPID prototypal light detectors with NTD-Ge sensors in a pulse-tube cryostat,JINST18(2023) P06...

    2024 arXiv

  3. [23]

    Maisonobe, J

    R. Maisonobe, J. Billard, M. De Jesus, A. Juillard, D. Misiak, E. Olivieri et al.,Vibration decoupling system for massive bolometers in dry cryostats,JINST13(2018) T08009 [1803.03463]. [24]CUOREcollaboration,The CUORE Cryostat: A 1-Ton Scale Setup for Bolometric Detectors,J. L...

    2018 arXiv

  4. [25]

    Olivieri, J

    E. Olivieri, J. Billard, M. De Jesus, A. Juillard and A. Leder,Vibrations on pulse tube based Dry Dilution Refrigerators for low noise measurements,Nucl. Instrum. Meth. A858(2017) 73 [1703.08957]

    2017 arXiv

  5. [26]

    van Haan, G.H.C.J

    A.M.J. van Haan, G.H.C.J. Wijts, F. Galli, O. Usenko, G.J.C. van Baarle, D.J. van der Zalm et al., Atomic resolution scanning tunneling microscopy in a cryogen free dilution refrigerator at 15 mK, Rev. Sci. Instrum.85(2014) 035112 [1312.6011]

    2014 arXiv

  6. [27]

    Wiens and S

    E. Wiens and S. Schiller,A simple and efficient passive vibration isolation system for large loads in closed-cycle cryostats,Review of Scientific Instruments92(2021) 095101

    2021

  7. [28]

    Lee, H.S

    C. Lee, H.S. Jo, C.S. Kang, G.B. Kim, I. Kim, Y.H. Kim et al.,Vibration Mitigation for a Cryogen-Free Dilution Refrigerator for the AMoRE-Pilot Experiment,J. Low Temp. Phys.193(2018) 786

    2018

  8. [29]

    de Wit, G

    M. de Wit, G. Welker, K. Heeck, F.M. Buters, H.J. Eerkens, G. Koning et al.,Vibration isolation with high thermal conductance for a cryogen-free dilution refrigerator,Rev. Sci. Instrum.90(2019) 015112 [1810.06847]

    2019 arXiv

  9. [30]

    Blair, F.J

    D.G. Blair, F.J. van Kann and A.L. Fairhall,Behaviour of a vibration isolator suitable for use in cryogenic or vacuum environments,Measurement Science and Technology2(1991) 846

    1991

  10. [31]

    Vetter et al.,Improving the performance of cryogenic calorimeters with nonlinear multivariate noise cancellation algorithms,Eur

    K.J. Vetter et al.,Improving the performance of cryogenic calorimeters with nonlinear multivariate noise cancellation algorithms,Eur. Phys. J. C84(2024) 243 [2311.01131]

    2024

  11. [32]

    Endevco Piezoelectric Accelerometer, Model 2271A.https://www.pcb.com/products?m=2271a, 2025

    2025

  12. [33]

    PCB Piezotronics 4-Channel Dual Mode Signal Conditioner with Charge-to-Voltage Conversion and Voltage Gain, Model 482C64.https://www.pcb.com/products?m=482c64, 2025. – 14 –

    2025

  13. [34]

    https://www.pcb.com/products?m=393b31, 2025

    PCB Piezotronics Piezoelectric Accelerometer, Model 393B31. https://www.pcb.com/products?m=393b31, 2025

    2025

  14. [35]

    https://www.pcb.com/products?m=482c15, 2025

    PCB Piezotronics 4-Channel Signal Conditioner with Selectable Voltage Gain, Model 482C15. https://www.pcb.com/products?m=482c15, 2025

    2025

  15. [36]

    https://www.ni.com/en-us/shop/model/ni-9230.html, 2025

    National Instruments 3-channel 12.8 kS/s C Series DAQ, Model 9230. https://www.ni.com/en-us/shop/model/ni-9230.html, 2025

    2025

  16. [37]

    https://www.ni.com/en-us/shop/model/cdaq-9178.html, 2025

    National Instruments compact DAQ Chassis, Model 9178. https://www.ni.com/en-us/shop/model/cdaq-9178.html, 2025

    2025

  17. [38]

    https://buy.endevco.com/cables/3090c-cable-2, 2025

    Endevco Low Noise Cable Assembly, Model 3090C. https://buy.endevco.com/cables/3090c-cable-2, 2025

    2025

  18. [39]

    et al.,Geant4—a simulation toolkit,Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment506(2003) 250

    S.A. et al.,Geant4—a simulation toolkit,Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment506(2003) 250

    2003

  19. [40]

    Spectrum Techniques Certificate of Activity

    , “Spectrum Techniques Certificate of Activity.” https://www.spectrumtechniques.com/product/beta-gamma-disk-sources/, 2022, 15 Feb

    2022

  20. [41]

    Certified Reference Material IAEA-RGK-1

    IAEA, “Certified Reference Material IAEA-RGK-1.” https://analytical-reference-materials.iaea.org/iaea-rgk-1, 2024, 07 March. – 15 –

    2024

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