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cap alpha. decay of neutron-deficient odd-Bi nuclei: Shell-model intruder states in Tl and Bi isotopes

Journal Article · · Phys. Rev. Lett.; (United States)
The ..cap alpha.. decay of mass-separated Bi isotopes is studied to characterize the shell-model intruder states in the odd-mass Tl and Bi isotopes. Allowed ..cap alpha.. decay is observed between the /sup 189en-dash195/Bi ..pi..h/sub 9/2/ ground states and the /sup 185en-dash191/Tl ..pi..h/sub 9/2/ intruder states and between the /sup 191en-dash197/Bi ..pi..s/sub 1/2/ intruder states and the /sup 187en-dash193/Tl ..pi..s/sub 1/2/ ground states. The observation of forbidden ..cap alpha.. branches provides excitation energies for the intruder states in /sup 189,191/Tl, and /sup 189,191,193,195/Bi and confirms the intruder-state excitation energies in /sup 185,187/Tl.
Research Organization:
Leuven Isotope Separator On-Line (LISOL), Instituut voor Kern- en Stralingsfysika, B-3030 Leuven, Belgium
DOE Contract Number:
AS05-80ER10599
OSTI ID:
5469628
Journal Information:
Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 54:16; ISSN PRLTA
Country of Publication:
United States
Language:
English