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PreprintarXiv licencearXiv

Reinvestigation of the Yield of the Trinity Device

  • Eric B. Norman
  • Keenan J. Thomas
  • Pedro V. Guillaumon
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Abstract

Previous published analyses of trinitite to determine the yield of the Trinity nuclear explosion used various estimates of the fraction of fission products that became incorporated in trinitite. Furthermore, these studies utilized nuclear data that has subsequently been revised. Utilizing a planar germanium detector, we observed gamma rays produced by the decays of both 137Cs and 239Pu from four samples of trinitite. From the observed 137Cs/239Pu ratios of and a simple analysis method based on current nuclear data and weapons debris studies, we find an average yield of 9.1+-4.5 kilotons from our four samples. While this result is substantially lower than the established total yield of 21 kilotons, it is in reasonable agreement that attributable to fissions in the 239Pu core alone.

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Cite

BibTeXRIS
BibTeX
@misc{norman2026reinvestigation,
  title = {{Reinvestigation of the Yield of the Trinity Device}},
  author = {Eric B. Norman and Keenan J. Thomas and Pedro V. Guillaumon},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2609.09726},
  eprint = {2609.09726},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2609.09726},
}
RIS
TY  - UNPB
TI  - Reinvestigation of the Yield of the Trinity Device
AU  - Eric B. Norman
AU  - Keenan J. Thomas
AU  - Pedro V. Guillaumon
PY  - 2026
DA  - 2026/09/09
PB  - arXiv
DO  - 10.48550/arxiv.2609.09726
UR  - https://arxiv.org/abs/2609.09726
AB  - Previous published analyses of trinitite to determine the yield of the Trinity nuclear explosion used various estimates of the fraction of fission products that became incorporated in trinitite. Furthermore, these studies utilized nuclear data that has subsequently been revised. Utilizing a planar germanium detector, we observed gamma rays produced by the decays of both 137Cs and 239Pu from four samples of trinitite. From the observed 137Cs/239Pu ratios of and a simple analysis method based on current nuclear data and weapons debris studies, we find an average yield of 9.1+-4.5 kilotons from our four samples. While this result is substantially lower than the established total yield of 21 kilotons, it is in reasonable agreement that attributable to fissions in the 239Pu core alone.
ER  -