LOWER EXCITED STATES IN P$sup 29$ FROM THE Si$sup 28$(p,$gamma$)P$sup 29$ REACTION
The gamma rays from the Si/sup 28/(p, gamma )P/sup 29/ reaction at the E/sub p/ = 36 kev resonance were studied with a large NaI(Tl) crystal scintillation spectrometer. The resonance state, corresponding to the 3.116 plus or minus 0.012-Mev fourth excited state in P/sup 29/, was found to decay by (74 plus or minus 4)% to the first excited state at 1.384 plus or minus 0.008 Mev and by (26 plus or minus 4)% to the second excited state at 1.961 plus or minus 0.013 Mev, which decays predominantly to the ground state. From the angular distr bution measurements of each gamma -ray line, spins and parities as follows: 1.38 Mev (1st), J = 3/2+; 1.96 Mev (2nd), J = 5/2+; and 3.12 Mev (4th), J = 5/2+. These assignments are all consistent with the known character of the corresponding levels in the mirror nucleus Si/sup 29/, and are also in agreement with the theoretical predictions. From the precise gamma ray energy measurements, the Q value of this reaction was estimated as 2.760 plus or minus 0.013 Mev, which is by about 36 kev larger than the published value based on the beta -ray endpoint energy measurement. The resonance strength (2J + 1) GAMMA / sub p/ GAMMA /sub gamma / ( GAMMA /sub p/ + GAMMA /sub gamma /) was found to be (4.7 plus or minus 0.8 ) x 10/sup -3/ 3v. (auth).
- Research Organization:
- Kyoto Univ.
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-14-026290
- OSTI ID:
- 4133634
- Journal Information:
- J. Phys. Soc. Japan, Journal Name: J. Phys. Soc. Japan Vol. Vol: 15
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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