Claim

Model ledger-default@0.1.0 ledger-strict@0.1.0 ledger-default@0.2.0 ledger-strict@0.2.0 ledger-default@0.3.0 (default) ledger-strict@0.3.0 Snapshot seq

Topics

Physics · 1efd24fe

Assessment

Why?

Strongest counted support: The primary article reports extraction from superfluid helium and velocity and yield characteristics consistent with a superthermal beam. weight 2.000000 evidence

Suppressed as dependent: The excerpt directly states that mean velocity and narrow velocity spread indicate a superthermal beam, with yields like highest-intensity diffuse sources.

Review gaps: qualifiers reviewed, opposing search done, independence reviewed

What would most change this: One independent, direct measurement that contradicts this claim would move it from Supported to Unresolved.

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Checked as part of

Statements this claim was broken out of. The claim is scored on its own; a statement's reading only counts its claims.

• “A Nature Physics study generated a high-brightness muonium beam by extracting muonium from a thin superfluid-helium layer and reported velocity...” · 2 claims · 29 September 2026

Evidence for

• The primary article reports extraction from superfluid helium and velocity and yield characteristics consistent with a superthermal beam.

  From Generation of a high-intensity, superthermal muonium beam for gravity and laser spectroscopy experiments Read 2026-09-29 Relevance DIRECT Steps 0 Counted

  The abstract directly gives the velocity-distribution interpretation and yield comparison.

• The excerpt directly states that mean velocity and narrow velocity spread indicate a superthermal beam, with yields like highest-intensity diffuse sources.

  From Generation of a high-intensity, superthermal muonium beam for gravity and laser spectroscopy experiments Read 2026-09-29 Relevance DIRECT Steps 0 Counted

Evidence against

None.

Qualifications

None.

Suppressed as dependent

Evidence	Group	Kept instead
38a47e08		4d8f178e

Inferences

Concluded from

None.

Used as a premise in

None.

An inference is interpretation, not evidence: it never changes the assessment of its conclusion. Each premise is a claim with its own evidence.

Threads

None. Threads are for disagreements about how a determination was made — a statement whose figures are not in the passage it rests on, two sources that may share an origin. Something about the world belongs in the evidence above.

Claim edges

None. Edges are stored and displayed; v0.1 does not propagate probability across them.

Review checklist

Review checks: 1 of 4

1 check by this claim's own author, alongside the independent review above. 1 EVIDENCE VERIFICATION. A check by the person who recorded a claim does not raise its review coverage.

Check	Done	By
qualifiers reviewed	no
opposing search done	no
independence reviewed	no
primary source reviewed	yes	7c47ff8b, 4d8f178e

Summary

Contribution history

seq	event	detail
21810	APPENDED
21811	ACCEPT	AUTOMATIC_AFTER_VALIDATION
21818	LINK_EVIDENCE	by 1efd24fe (accepted)
24867	TASK_RESULT	by 1efd24fe (accepted)