ÚTEFČVUT Ústav technické a experimentální fyziky ČVUT v PrazeInstitute of Experimental and Applied Physics, CTU in Prague

Emission intensities of gamma transitions in 235U alpha decay

NázevTitle
Emission intensities of gamma transitions in 235U alpha decayEmission intensities of gamma transitions in 235U alpha decay
Druh výsledkuResult type
Článek v časopiseJournal article
AutořiAuthors
F.A. Danevich, S. S. Drapey, D. V. Kasperovych, V. I. Kirischuk, V. Tretyak
Klíčová slovaKeywords
alpha decay, 235U, HPGe detector
DOIDOI
10.1140/epja/s10050-025-01746-8
Časopis / citaceJournal / citation
The European Physical Journal A 61(11), 264 (2025) · ISSN 1434-6001
RokYear
2025
JazykLanguage
eng
ZáznamyRecords
ProjektProject
Laboratoire Souterrain de Modane - účast ČRLaboratoire Souterrain de Modane – participation of the Czech Republic; LSM-CZ III - Podzemní laboratoř LSM - účast České republiky - LM2023063 (2023–2026)LSM-CZ III - Podzemní laboratoř LSM - účast České republiky - LM2023063 (2023–2026)
CitovánoCited by
1 (OpenAlex)
2026: 1
Citace ke staženíDownload citation
TXT · BibTeX

AbstraktAbstract

New experimental values for the gamma-ray emission intensities in the decay of 235U have been obtained by measurements of a 230-g certified triuranium octoxide sample enriched in 235U to 93.2% with a 70 cm3 high-purity germanium detector over 1111 h. Calibration of energy scale and detection efficiency was performed by using peaks of 235U, 234mPa, and U/Th series daughters. The revised intensities account for cascade summation, random coincidences, and interference from gamma-rays of other nuclides. Intensities of several gamma transitions were found to have been significantly overestimated in earlier studies, by up to two orders of magnitude.

New experimental values for the gamma-ray emission intensities in the decay of 235U have been obtained by measurements of a 230-g certified triuranium octoxide sample enriched in 235U to 93.2% with a 70 cm3 high-purity germanium detector over 1111 h. Calibration of energy scale and detection efficiency was performed by using peaks of 235U, 234mPa, and U/Th series daughters. The revised intensities account for cascade summation, random coincidences, and interference from gamma-rays of other nuclides. Intensities of several gamma transitions were found to have been significantly overestimated in earlier studies, by up to two orders of magnitude.

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