Reaction O 16 (γ, p )N 15 20.5 MeV Polarized Bremsstrahlung
D/sub 2/O soaked, H/sub 2/O soaked, and unsoaked emulsions were irradiated simultaneously at the characteristic angle by the 20.5-Mev polarized bremsstrahlung from a thin Al target in a betatron. The linear polarization of the gamma rays at 4 Mev to 6 Mev was estimated to be 31.7 plus or minus 5.0% by observing the azimuthal angular distribution of photoprotons from deuterons. The H/sub 2/O soaked emulsion and unsoaked one were used to study O/sup 16/( gamma ,p) reaction. The proton energy spectrum shows a structure which agrees with the earlier results except a peak at 1.1 Mev of proton energy. This peak which has never been found corresponds to the wellknown resonance in N/sup 15/5(p, gamma )O 6 at 1.05 Mev of proton energy. The azimuthal angular distributions of photoprotons caused by several photon energy regions were observed. From these angular distributions it is shown that a resonance at a photon energy of 17.3 Mev is E1 transition, and the corresponding level of O/sup 16/ is considered to have J = 1-, T = 1, which is in good agreement with the theoretical calculation in the intermediate coupling.
- Research Organization:
- Tohoku Univ., Sendai
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-16-002536
- OSTI ID:
- 4832715
- Journal Information:
- Journal of the Physical Society of Japan, Journal Name: Journal of the Physical Society of Japan Journal Issue: 10 Vol. 16; ISSN 0031-9015
- Publisher:
- Physical Society of Japan
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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