Identification of the new isotope 241Bk
Asai, M. ; Tsukada, K. ; Ichikawa, S. ; Sakama, M. ; Haba, H. ; Nagame, Y. ; Nishinaka, I. ; Akiyama, K. ; Toyoshima, A. ; Kaneko, T. ; Oura, Y. ; Kojima, Y. ; Shibata, M.
Springer
Published 2003
Springer
Published 2003
| ISSN: |
1434-601X
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| Keywords: |
PACS. 23.20.Lv Gamma transitions and level energies – 23.40.-s Beta decay; double beta decay; electron and muon capture – 27.90.+b A ≥ 220
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| Source: |
Springer Online Journal Archives 1860-2000
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| Topics: |
Physics
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| Notes: |
Abstract: A new neutron-deficient berkelium isotope 241Bk produced in the 239Pu(6Li, 4n) reaction has been identified using a gas-jet coupled on-line isotope separator. Cm K and L X-rays associated with the EC decay of 241Bk were observed in the mass-241 fraction, and three γ transitions were attributed to the EC decay of 241Bk through X-γ coincidences. The half-life of 241Bk was determined to be 4.6±0.4 min which is 1/2-1/4 of that of theoretical predictions. The half-life value and the observed γ transitions can be consistently explained as a consequence of the allowed EC transition of π7/2+[633] → ν7/2+[624].
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| Type of Medium: |
Electronic Resource
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| URL: |