Study of Associated Gamma Rays from Niobium under 14,9 MeV Neutron Bombardments

Zhou Hongyu; Yan Yiming; Fan Guoying; Lan Liqiao; Wang Qi; Sun Shuxu; Hua Ming; Han Chongzhan; Liu Shuzhen; Rong Yaning; Wen Shenlin; Wang Xinfu; Yan Hua; Wang Wanhong; Tang Lin

Chinese Physics C> 1989, Vol. 13> Issue(S1) : 97-108

Study of Associated Gamma Rays from Niobium under 14,9 MeV Neutron Bombardments

1. Institute of Low Energy Nuclear Physics, Beijing Normal University;
2. Department of Mathematical and Physical Science, National Natural Science Foundation of China, Beijing

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The gamma-ray spectra from niobium under 14.9 MeV neutron bombardments were measured by means of a pulsed T(d,n)⁴He neutron source, associated particle method, Ge(Li) detector and time-of-flight technique at 7 angles between 30° and 140°. 79 gammalines were determined by a high resolution gamma-spectrum analysis program. The reaction types and the transition levels of 62 lines were preliminarily assigned. Of the 79 gamma-lines, 40 lines were first found in the reactions induced by neutrons. The differential cross sections of every gamma-line at 7 angles were determined. Our study shows that the associated gamma-ray emissions from this reaction are basically isotropic.

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Zhou Hongyu, Yan Yiming, Fan Guoying, Lan Liqiao, Wang Qi, Sun Shuxu, Hua Ming, Han Chongzhan, Liu Shuzhen, Rong Yaning, Wen Shenlin, Wang Xinfu, Yan Hua, Wang Wanhong and Tang Lin. Study of Associated Gamma Rays from Niobium under 14,9 MeV Neutron Bombardments[J]. Chinese Physics C, 1989, 13(S1): 97-108.

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Received: 1987-12-23

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Supported by the National Natural Science Foundation of China and Ministry of Nuclear Industry of China.

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沈阳化工大学材料科学与工程学院沈阳 110142

Study of Associated Gamma Rays from Niobium under 14,9 MeV Neutron Bombardments

1. Institute of Low Energy Nuclear Physics, Beijing Normal University;
2. Department of Mathematical and Physical Science, National Natural Science Foundation of China, Beijing

Received Date: 1987-12-23

Fund Project: Supported by the National Natural Science Foundation of China and Ministry of Nuclear Industry of China.

Abstract: The gamma-ray spectra from niobium under 14.9 MeV neutron bombardments were measured by means of a pulsed T(d,n)⁴He neutron source, associated particle method, Ge(Li) detector and time-of-flight technique at 7 angles between 30° and 140°. 79 gammalines were determined by a high resolution gamma-spectrum analysis program. The reaction types and the transition levels of 62 lines were preliminarily assigned. Of the 79 gamma-lines, 40 lines were first found in the reactions induced by neutrons. The differential cross sections of every gamma-line at 7 angles were determined. Our study shows that the associated gamma-ray emissions from this reaction are basically isotropic.