Abstract
New -emitting bismuth nuclides ranging in mass number from 189 to 197 and lead nuclides ranging from 186 to 192 have been produced in the following reactions: , , , , , , and . Assignments were made on the basis of excitation function measurements and comparison with similar reactions leading to the formation of the analogous well-known Po nuclides. The following assignments were made, where for each nuclide the two listed numbers are the -ray energy in MeV and half-life: —5.77, 10 min; -5.43, 170 sec; —6.11, 90 sec; -5.61, 105 sec; -5.90, 64 sec; —6.18; -6.06, 42 sec; -6.32, 13 sec; —6.63; —6.86; -6.45, 5.4 sec; -6.67, <2 sec; -5.06, 2.3 min; -5.29, 1.3 min; -5.58, 1.2 min; -5.72, 51 sec; -5.98, 26 sec; -6.08, 17 sec; and -6.32, 8 sec. Estimates of branching ratios are also presented.
[RADIOACTIVITY new nuclides , , , , , , , , , , , , , , , , ; nuclides produced in various () reactions; measured , , branching ratios.]
- Received 9 July 1973
DOI:https://doi.org/10.1103/PhysRevC.9.1091
©1974 American Physical Society