Pith Number

pith:RYCZ7FSH

pith:2025:RYCZ7FSHJX42CFNDYRABLVUU4P

not attested not anchored not stored refs resolved

Atomic and molecular systems for radiation thermometry

Christopher Holloway, Eric B. Norrgard, Matthew Simons, Nikunjkumar Prajapati, Noah Schlossberger, Stephen P. Eckel

Atoms serve as primary sensors for radiative temperature by measuring blackbody radiation transition rates in quantum states.

arxiv:2512.08668 v2 · 2025-12-09 · physics.atom-ph

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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

The cold atom thermometer (CAT) uses a gas of laser cooled 85Rb Rydberg atoms to probe the BBR spectrum near 130 GHz. This primary temperature measurement currently has a total uncertainty of approximately 1%, with clear paths toward improvement. The CoBRAS has an excellent relative precision of u(T)≈0.13 K.

C2weakest assumption

That the rate equation models fully capture the population dynamics driven by blackbody radiation without significant unmodeled effects such as stray fields, collisions, or incomplete knowledge of transition matrix elements.

C3one line summary

Atomic systems using 85Rb Rydberg atoms and vapor provide primary measurements of blackbody radiation temperature near 130 GHz and 24.5 THz with uncertainties of 1% and 0.13 K respectively.

References

25 extracted · 25 resolved · 0 Pith anchors

[1] transition at 780.1242 nm and the 5P 3/2(F ′ = 4)→32S 1/2 transition. (The hyperfine states in the excited 32S 1/2 state are unresolved.) From there, blackbody radiation drives transitions to nearby P

[2] Optical atomic clocks 2015 · doi:10.1103/revmodphys.87.637

[3] Chip-scale atomic devices 2018 · doi:10.1063/1.5026238

[4] and Artusio-Glimpse, Alexandra B 2024 · doi:10.1038/s42254-024-00756-7

[5] 2022 Precise quantum measurement of vacuum with cold atoms.Review of Scientific Instruments93, 121101 2022 · doi:10.1063/5.0120500

Formal links

2 machine-checked theorem links

Receipt and verification

First computed	2026-05-18T02:44:32.199626Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8e059f96474df9a115a3c44015d694e3dfe58f5ddf3ebb5ba1882fdb2bd907f2

Aliases

arxiv: 2512.08668 · arxiv_version: 2512.08668v2 · doi: 10.48550/arxiv.2512.08668 · pith_short_12: RYCZ7FSHJX42 · pith_short_16: RYCZ7FSHJX42CFND · pith_short_8: RYCZ7FSH

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/RYCZ7FSHJX42CFNDYRABLVUU4P \
  | 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: 8e059f96474df9a115a3c44015d694e3dfe58f5ddf3ebb5ba1882fdb2bd907f2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "672b8f73ae7159bc0cfaf4909806c14e6191309ecb3285208b62165ff93b5060",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/publicdomain/zero/1.0/",
    "primary_cat": "physics.atom-ph",
    "submitted_at": "2025-12-09T14:52:28Z",
    "title_canon_sha256": "b709f2a56b608af98bd1c9bf2c93e4ce1d577e035462ca3ae95fd1e1a3749130"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2512.08668",
    "kind": "arxiv",
    "version": 2
  }
}