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Study of {sup 189}Bi{sup m} {alpha} decay

Conference ·
OSTI ID:162189

In a series of {sup 48}Ti bombardments of {sup 144}Sm the decay energy of the {sup 189}Bi{sup m} ({pi}s{sub 1/2}) {alpha} transition that proceeds to the {pi}s{sub 1/2} ground state of {sup 185}Tl was measured to be 7.30(4) MeV. This result establishes the excitation energy of {sup 189}Bi{sup m} as 190(40) keV rather than the adopted 92(10)-keV value. Our data thus indicate a leveling off in excitation energy at N {approx} 106 for the s{sub 1/2} intruder state in odd-A Bi isotopes.

Research Organization:
Louisiana State Univ., Baton Rouge, LA (United States); Oak Ridge National Lab., TN (United States)
Sponsoring Organization:
USDOE, Washington, DC (United States)
DOE Contract Number:
FG05-84ER40159; AC05-84OR21400
OSTI ID:
162189
Report Number(s):
CONF-950660--9; ON: DE96003016
Country of Publication:
United States
Language:
English

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