INTRINSIC EXCITED STATES IN Hf$sup 178$ POPULATED BY THE ALLOWED DECAY OF 9.3-min Ta$sup 17$$sup 8$
The levels in Hf/sup 1//sup 7//sup 8/ populated by the allowed positron and electron capture decays of 9.3 min Ta/sup 1//sup 7//sup 8/ are investigated with a six-gap spectrometer. Conversion-electron spec trum and beta-gamma coincidence measurements establish the spin and parities of levels in Hf/sup 1// sup 7//sup 8/ with energies of 1483(2+) kev, and possibly a level at 1550 kev. (Double parentheses indicate that the spin is not definitely established.) Intrinsic configuration assignments for the excited states are discussed in terms of theoretical developments. The half life of the 93 kev level is found to be (1.25 plus or minus 0.08) x 10/sup -//sup 9/ sec. The beta /sup +//K capture ratio measured for the allowed decay to ground is within experimental error of theory. Reduced E0/E2 transition probability ratios for the transitions depopulating the 1197 and 1440 kev 0+ levels are calculated from the observed K- conversion line intensities of the E0 and E2 transitions depopulating the levels. (auth)
- Research Organization:
- Univ. of Copenhagen
- NSA Number:
- NSA-15-020197
- OSTI ID:
- 4092559
- Journal Information:
- Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, Journal Name: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D Vol. Vol: 122; ISSN PHRVA
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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