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A study of the O^(17)(p, α)N^(14) reaction
[摘要]

An experimental measurement of the absolute cross sectionfor the O^(17)(p, α)N^(14) reaction has been carried out in the energy range from 490- to 1580-kev proton bombarding energy at a laboratory angle of 150°. Resonances were observed at bombarding energies of 518, 672, 747, 825,927, 1096, 1101, 1247, 1274, and 1335 kev. Other level parameters were assigned where possible. The 747-kev resonance corresponds to a level in F^(18) at 6302-kev excitation which does not appear to have been previouslyreported.

A calculation of the ratio O^(17)/O^(16) formed at equilibrium at various temperatures in the CNO-cycle in stars is made, and it is concluded that the terrestrial material which has been processed in the CNO-cycle underwent this processing at a temperature of about 17 x 10^6 °K.

[发布日期]  [发布机构] University:California Institute of Technology;Department:Physics, Mathematics and Astronomy
[效力级别]  [学科分类] 
[关键词] Physics [时效性] 
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