Paper Citation Record · LEDGER

Improvised Nuclear Weapons with 60%-Enriched Uranium

As of 19 August 2026, this Paper Citation Record lists 12 of 12 outbound references and 1 inbound Pith citation observation for arXiv:2507.20390.

A citation records a reference. It does not transfer a finding from one paper to another.

pith.paper-citation-record.v1
2507.20390 v1

Coverage vector

measured 12 of 12 reference resolution

Typed states for the displayed outbound observations.

Source: paper_references, paper_reference_links, observed 2026-08-15T17:52:52.272899Z

measured 13 of 13 standing notices

One-hop event checks from named stored sources.

Source: scholarly_work_events, retraction_status_cache, observed 2026-08-18T06:34:40.430872+00:00

measured 1 of 1 inbound itemization

Pith citing papers itemized under the disclosed page cap.

Source: paper_references, paper_reference_links, observed 2026-08-15T17:52:52.226857Z

measured 0 of 1 external citation measurements

A source-named dated measurement, never combined with another source.

Source: pith, observed 2026-08-15T17:52:52.329263Z

Reference resolution

12 of 12 outbound references displayed

verified exact2
verified fuzzy6
unresolved2
parse uncertain0
malformed identifier2
metadata mismatch0

External citation measurements

No source-named external measurement is stored.

Outbound references

Observation 80620bb0-533c-4fdc-b382-2671255a78bb · outbound

This paper cites Improvised Nuclear Weapons with 60%-Enriched Uranium.

Improvised Nuclear Weapons with 60%-Enriched Uranium Improvised Nuclear Weapons with 60%-Enriched Uranium

Reference 1

Resolution: verified exact; local_arxiv, observed 2026-08-15T17:52:52.333768Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation 31e5a070-395a-490f-aa52-75d19913d576 · outbound

This paper cites σtr =σ el + 1 2σin.

Improvised Nuclear Weapons with 60%-Enriched Uranium σtr =σ el + 1 2σin

Reference 2

Resolution: verified fuzzy; raw_fallback, observed 2026-08-15T17:52:52.450752Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation 457a764f-d60d-4903-af5f-34b16ac99ba5 · outbound

This paper cites The bulk of the weight is given over to the neutron reflecting tamper of tungsten carbide and steel (blue).

Improvised Nuclear Weapons with 60%-Enriched Uranium The bulk of the weight is given over to the neutron reflecting tamper of tungsten carbide and steel (blue)

Reference 3

Resolution: verified fuzzy; raw_fallback, observed 2026-08-15T17:52:52.465337Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation be5e74ea-f135-4acb-9ddc-9187ed71c29d · outbound

This paper cites The dashed grey line at the bottom is the infinite tamper limit.

Improvised Nuclear Weapons with 60%-Enriched Uranium The dashed grey line at the bottom is the infinite tamper limit

Reference 4

Resolution: verified fuzzy; raw_fallback, observed 2026-08-15T17:52:52.393076Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation 1f3601ba-4e64-4e70-bcd0-2d8af54bda05 · outbound

This paper cites As 1 MeV is a typical fission neutron energy, this means that after a few scatters neutrons become significantly less effective at causing 238U fission.

Improvised Nuclear Weapons with 60%-Enriched Uranium As 1 MeV is a typical fission neutron energy, this means that after a few scatters neutrons become significantly less effective at causing 238U fission

Reference 5

Resolution: verified fuzzy; raw_fallback, observed 2026-08-15T17:52:52.436842Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation 79946a04-c5aa-4c44-864e-23fda3cad490 · outbound

This paper cites spontaneous-fission-free-millisecond.

Improvised Nuclear Weapons with 60%-Enriched Uranium spontaneous-fission-free-millisecond

Reference 6

Resolution: verified fuzzy; raw_fallback, observed 2026-08-15T17:52:52.423622Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation 5417df6a-e963-4ff5-9d16-41cfb16d0e88 · outbound

This paper cites an unresolved cited work.

Improvised Nuclear Weapons with 60%-Enriched Uranium Unresolved cited work

Reference 7

Resolution: unresolved; raw_fallback, observed 2026-08-15T17:52:52.408687Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation 78038f46-2d03-49b0-a81c-4863917a2d50 · outbound

This paper cites The majority of the yield is released within 0.15µs, after which the coreα(top) drops to zero due to the expansion of the core.

Improvised Nuclear Weapons with 60%-Enriched Uranium The majority of the yield is released within 0.15µs, after which the coreα(top) drops to zero due to the expansion of the core

Reference 9

Resolution: malformed identifier; raw_fallback, observed 2026-08-15T17:52:52.377214Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation 6a34d94d-25f0-46ac-9e48-3be7275f2edb · outbound

This paper cites Solid lower bounds (dashed upper bounds) useσ 238U f = 0.10 b (σ238U f = 0.15 b).

Improvised Nuclear Weapons with 60%-Enriched Uranium Solid lower bounds (dashed upper bounds) useσ 238U f = 0.10 b (σ238U f = 0.15 b)

Reference 10

Resolution: malformed identifier; raw_fallback, observed 2026-08-15T17:52:52.362327Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation c2d6124b-b86f-48a8-8495-16beedeac153 · outbound

This paper cites An elementary method to determine the critical mass of a sphere of fissile material based on a separation of neutron transport and nuclear reaction processes.

Improvised Nuclear Weapons with 60%-Enriched Uranium An elementary method to determine the critical mass of a sphere of fissile material based on a separation of neutron transport and nuclear reaction processes

Reference 1986

Resolution: verified exact; local_arxiv, observed 2026-08-15T17:52:52.314337Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation 1a93efad-68df-4f12-9cae-c974346e96f5 · outbound

This paper cites an unresolved cited work.

Improvised Nuclear Weapons with 60%-Enriched Uranium Unresolved cited work

Reference 2014

Resolution: unresolved; raw_fallback, observed 2026-08-15T17:52:52.347918Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation 18859f95-8eb0-48ed-8273-7b7fb088f1c6 · outbound

This paper cites While too large to fit on a missile, such a weapon could be delivered by shipping container.

Improvised Nuclear Weapons with 60%-Enriched Uranium While too large to fit on a missile, such a weapon could be delivered by shipping container

Reference 2025

Resolution: verified fuzzy; raw_fallback, observed 2026-08-15T17:52:52.479250Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Pith citing papers

Observation 80620bb0-533c-4fdc-b382-2671255a78bb · inbound