“Gamma Rays from the Proton Bombardment of Sulphur and the O ⁺ Second Excited State of ³² S”

Journal Article · Sun Oct 15 04:00:00 EDT 1961 · Journal of the Physical Society of Japan

DOI:https://doi.org/10.1143/JPSJ.16.1828· OSTI ID:4833451

Hirao, Yasuo

The analysis of gamma rays from natural sulfur, separated S/sup 32/ and S/sup 34/ bombarded by protons up to 5.7 Mev was carried out. Excitation function of the 2.24-Mey gamma ray due to the transition (1st-ground state of S3/ ) was measurcd. Resonances were found at E = 4.77, 5.10, 5.35, and 5.60 Miev, which correspond to the excitation energies of 6.93, 7.24, 7.48, and 7.71 Mev of Cl/sup 33/, respectively. Gamma rays were observed with a single and three crystal spectronrcters. ln addition, using gamma-gamma cascade coincidence and sum coincidence methods, energies and decay scheme were determined as follows: S3/: 0.Y2 Mev (5th-2nd), 1.20 (6th-2nd), 1.54 (2nd-1st), 2.23 (3rd-1st), 2.24 (1st-ground), and ~4.3 (3rd or 4th-ground). S/sup 34/: (7th-3rd), l.17 (2nd- 1st), 2.13 (1st-ground), 3.30 (2ndground), 3.91 (3rd-ground), and 4.11 (5th- ground). The 3.78 Mev gamma ray due to the transition (2nd-ground of S/sup 32/) was not found. The angular correlation between the cascade gamma rays of 1.54 and 2.24 Mev shows good agreement with the transition of O/sup +/(E2)2/sup +/(E2)/ sup +/. Then the 2nd state of S/sup 32/ at 3.78 Mev has a spin of O+. This assignment agrees with the calculation of the j-j coupling shell model. With a three crystal spectrometer, nuclear pair from the 2nd state of S/sup 32/ at 3.78 Mev was searched. The intensity of the nuclear pair was about 2% or less of the 1.54 Mev gamma ray. The configurations of this O/sup +/ second state and the ground state of P/sup 31/ are also discussed.

• Research Organization: Osaka Univ.
• Sponsoring Organization: USDOE
• NSA Number: NSA-16-002535
• OSTI ID: 4833451
• 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

Related Subjects

ANGULAR DISTRIBUTION
CHLORINE 33
COINCIDENCE METHODS
CONFIGURATION
CROSS SECTIONS
CRYSTALS
DECAY
ENERGY
ENERGY LEVELS
EXCITATION
GAMMA RADIATION
INTERACTIONS
J-J COUPLING
MEASURED VALUES
NUCLEAR MODELS
NUMERICALS
ORBITS
PARITY
PHOSPHORUS
PHYSICS
RESONANCE
SCATTERING
SHELL MODELS
SPECTROMETERS
SPIN
SULFUR 32
SULFUR 34