COULOMB EXCITATION OF BETA- AND GAMMA-VIBRATIONAL STATES IN Sm$sup 15$$sup 2$
A Sm/sup 152/ target made by electromagnetic isotope separation was bombarded with 7.5 to 8.5 Mev deuterons and 8.6 Mev protons. Inelastic scattered groups correspending to Coulomb excitation of the level at 122 kev were observed in every case, and in one run with 8.5 Mev deuterons Coulomb excitation of levels at 807 kev and 1079 kev was observed. The reduced transition probabilities to these states are measured as 4.1 plus or minus 0.1, 0.07 plus or minus 0.02, and 0.12 plus or minus 0.02, respectively, in units of e/sup 2/ x 10/sup -48/ cm/sup 4/. The reduced transition probabilities for the two highest excited states are several times the single particle values. This is a strong indication of the collective nature of both these states. These levels are interpreted as beta- and gamma-vibrational states. The partial lifetime and the nuclear strength parameter for the E0-transition between the 807 kev and 122 kev levels were calculated from the experimental data and are found to be in poor agreement with the theoretical values. (auth)
- Research Organization:
- Florida State Univ., Tallahassee; Massachusetts Inst. of Tech., Cambridge
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-14-018452
- OSTI ID:
- 4144434
- Journal Information:
- Nuclear Phys., Journal Name: Nuclear Phys. Vol. Vol: 16
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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