Positron–K-Electron Annihilation in 180m Ta Atoms

Positron–K-Electron Annihilation in 180m Ta Atoms

The excitation cross sections of 180mTa are measured for the first time via positron–K-electron annihilation with a limit energy of 0.653 MeV. Effective cross sections σeff (180gTa) are found to be (3.9 ± 0.8) × 10−29 cm2. The differential cross section is estimated from the effective cross section...

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Veröffentlicht in:Bulletin of the Russian Academy of Sciences. Physics 2018-06, Vol.82 (6), p.712-715
Hauptverfasser: Varzar, S M, Zheltonozhskaya, M V, Zheltonozhsky, V A, Lykova, E N, Sadovnikov, L V, Chernyaev, A P
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Sprache:eng
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Cross-sections
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Zusammenfassung:The excitation cross sections of 180mTa are measured for the first time via positron–K-electron annihilation with a limit energy of 0.653 MeV. Effective cross sections σeff (180gTa) are found to be (3.9 ± 0.8) × 10−29 cm2. The differential cross section is estimated from the effective cross section and agrees qualitatively with theoretical calculations for E1 transitions.
ISSN:1062-8738
1934-9432
DOI:10.3103/S1062873818060333