Pith Number

pith:BQMH2LTL

pith:2025:BQMH2LTL7ZQA5ZQZIZL6X6E5WL

not attested not anchored not stored refs resolved

Identifying Neutron Sources using Recoil and Time-of-Flight Spectroscopy

David Breitenmoser, Ricardo Lopez, Sara A. Pozzi, Shaun D. Clarke

A Bayesian protocol identifies single and dual neutron sources from spectra at over 4 sigma significance using only about 1000 events.

arxiv:2512.10044 v2 · 2025-12-10 · physics.ins-det · nucl-ex · physics.app-ph · physics.data-an

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\usepackage{pith}
\pithnumber{BQMH2LTL7ZQA5ZQZIZL6X6E5WL}

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Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Claims

C1strongest claim

Applying this protocol to recoil and time-of-flight spectroscopy, we recover single- and two-source configurations with strong statistical significance (>4σ) at event counts as low as ∼10^3.

C2weakest assumption

The pre-built spectral templates accurately represent the true neutron energy distributions from the sources being identified, and the Bayesian evidence calculation properly handles all relevant uncertainties and background contributions.

C3one line summary

A Bayesian protocol identifies single- and two-source neutron configurations from spectra with greater than 4 sigma significance at event counts as low as 1000.

References

70 extracted · 70 resolved · 2 Pith anchors

[1] (see Supplemental Material [33]). To demonstrate the robustness and generalization capability of these tem- plates, the source position and source casing were deliber- ately varied between the templat

[2] H. Abele, The neutron. Its properties and basic inter- actions, Progress in Particle and Nuclear Physics60, 1 (2008) 2008

[3] A. Pietropaolo, M. Angelone, R. Bedogni, N. Colonna, A. J. Hurd, A. Khaplanov, F. Murtas, M. Pillon, F. Piscitelli, E. M. Schooneveld, and K. Zeitelhack, Neu- tron detection techniques fromµeV to GeV, 2020

[4] I. Mitrofanov, D. Anfimov, A. Kozyrev, M. Litvak, A. Sanin, V. Tret’yakov, A. Krylov, V. Shvetsov, W. Boynton, C. Shinohara, D. Hamara, and R. S. Saun- ders, Maps of subsurface hydrogen from the High 2002

[5] W. C. Feldman, S. Maurice, A. B. Binder, B. L. Bar- raclough, R. C. Elphic, and D. J. Lawrence, Fluxes of fast and epithermal neutrons from lunar prospector: Ev- idence for water ice at the lunar pole 1998

Formal links

2 machine-checked theorem links

Receipt and verification

First computed	2026-05-18T03:10:11.616273Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0c187d2e6bfe600ee6194657ebf89db2ea4063dc43bf8807a4e4dc6e60bfdffe

Aliases

arxiv: 2512.10044 · arxiv_version: 2512.10044v2 · doi: 10.48550/arxiv.2512.10044 · pith_short_12: BQMH2LTL7ZQA · pith_short_16: BQMH2LTL7ZQA5ZQZ · pith_short_8: BQMH2LTL

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/BQMH2LTL7ZQA5ZQZIZL6X6E5WL \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 0c187d2e6bfe600ee6194657ebf89db2ea4063dc43bf8807a4e4dc6e60bfdffe

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bbbdd631f8c06df35c445320a0651fa4438de627bf9b645549a03bc91dae1e47",
    "cross_cats_sorted": [
      "nucl-ex",
      "physics.app-ph",
      "physics.data-an"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.ins-det",
    "submitted_at": "2025-12-10T19:57:05Z",
    "title_canon_sha256": "f6b6a0d1b456ad5181edc721b76ecbeda6dd2359c60bf0beea976eec3e322292"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2512.10044",
    "kind": "arxiv",
    "version": 2
  }
}