"Gamma Rays from the Proton Bombardment of Sulphur and the O^+ Second Excited State of ^<32>S"

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概要

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• The analysis of gamma rays from natural sulphur, separated sulphur-32 and sulphur-34 bombarded protons up to 5.7 MeV was carried out. Excitation function of the 2.24 MeV gamma ray due to the transition (lst-ground state of ^<32>S) was measured. Resonances were found at Ep = 4.77, 5.10, 5.35 and 5.60 MeV, which correspond to the excitation energies of 6.93, 7.24, 7.48 and 7.71 MeV of ^<33>CI respectively. Gamma rays were observed with a single and three crystal spectrometers. In addition, using gamma-gamma cascade coincidence and sum coincidence methods, energies and decay scheme were determined as follows: ^<32>S: 0.92 MeV (5th-2nd), 1.20 (6th-2nd), 1.54 (2nd-1st), 2.23 (3rd-1st), 2.24 (lst-ground) and 〜4.3 (3rd or 4th-ground). ^<34>S: 0.97 (7td-3rd), 1.17 (2nd-1st), 2.13 (1st-ground), 3.30 (2nd-ground), 3.91 (3rd.ground) and 4.11 (5th-ground). The 3.78 MeV gamma ray due to the transition (2nd-ground of ^<32>S) 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^+(E2)2^+(E2)^+. Then the 2nd state of 82S 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 ^<32>S at 3.78 MeV was searched. The intensity of the nuclear pair was about 2% or less of the 1.54 M.eV gamma ray. The configurations of this O^+ second state and the ground state of ^<31>P are also discussed.

• 社団法人日本物理学会の論文
• 1961-10-05

著者

• Hirao Yasuo

  Department Of Physics And The Laboratory Of Nuclear Studies Faculty Of Science Osaka University Osak

• Hirao Yasuo

  Department Of Physics And Laboratory Of Nuclear Studies Faculty Of Science Osaka University

• Hirao Y.

  Department Of Physics And Laboratory Of Nuclear Studies Faculty Of Science Osaka University

関連論文

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• Gamma Rays from the Proton Bombardment of Silicon
• Excited States of ^40a
• Gamma Rays from the Excited States of ^O
• "Gamma Rays from the Proton Bombardment of Sulphur and the O^+ Second Excited State of ^S"
• Excited States in ^Ar from Inelastic Alpha-Particle Scattering
• 0^+ Second Excited State of ^S

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