STRONG NON-STATISTICAL EFFECT IN (n,γ)REACTIONS FOR LIGHTER NUCLEI

  • This paper investigates the non-statistical effects in 27Al(n,γ) and 28Si(n,γ) reactions.The neutron energies studied range from thermal to 2MeV.The calculated results show that in comparison with medium and heavy nuclei the fractions of non-statistical effects in the total (n,γ) cross sections in the two nuclides are extremely strong.The physical significance of the results and its implication with the measured correlation coefficients are discussed.
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  • [1] Y. K. Ho, J. F. Liu and C. Coceva, Intern. Conf. On Nucl. Data, 1988, Mito Japan.[2] B. J. Allen and A. R. de L. Musgrave, Advance in Nucl. Phys., vol., 10 (Plenum, New York, 1978) p. 129.[3] 刘建峰,霍裕昆,原子核物理,9(1987),21.[4] F. Becvar, Capture Gamma-Ray Spectroscopy and Related Topics, AIp Conf. Proc., No. 125, 1984, Knoxville,p345.[5] S. F. Mughabghab and R. E. Chrien, Neutron Capture Gamma-Ray Spectrorcopy (Plenum, New York;1978), p. 265.[6] S. F. Mughabghab, Lectures at the Third International School on Neutron Physics, Alushta, USSR, JINR Report No. D-11787 (1978), p. 328.[7] Y. K. Ho and M. A. Lone Nucl. Phys., A406(1983), 18.[8] S . Raman et al., Phys. Rev., C32(1965), 18.[9] Y. K. Ho and M. A. Lone Nucl. Phys., A406(1983), 1.[10] Y.K. Ho et al., ibid [4], p. 362.[11] F. J. Liu et al., ibid [4], p. 551.[12] G. E. Brown, Nucl. Phys., 57(1964), 339.[13] P . A. hloldauer, Rev. of Mod. Phys., 36(1964), 1079.[14] P. Axel, Phys. Rev., 126(1362), 671.[15] F. D. Becrhrtti and G. W. Greenless, Phys. Rev,., 162(1969), 1190.[16] P. M. Endt and C. Van der Lett, Nucl Phys., A310(1978), 1.[17] A. Gilbert and A. G. W. Cameron, Can J. Phys., 43(1965), 1446.[18] J . L. Cook et al., Aust. J. Phys., 20(1967), 477.
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HUO Yu-Kun, YUAN Zhu-Shu, MI Yong and LIU Jian-Feng. STRONG NON-STATISTICAL EFFECT IN (n,γ)REACTIONS FOR LIGHTER NUCLEI[J]. Chinese Physics C, 1989, 13(5): 465-469.
HUO Yu-Kun, YUAN Zhu-Shu, MI Yong and LIU Jian-Feng. STRONG NON-STATISTICAL EFFECT IN (n,γ)REACTIONS FOR LIGHTER NUCLEI[J]. Chinese Physics C, 1989, 13(5): 465-469. shu
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Received: 1900-01-01
Revised: 1900-01-01
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STRONG NON-STATISTICAL EFFECT IN (n,γ)REACTIONS FOR LIGHTER NUCLEI

    Corresponding author: HUO Yu-Kun,
  • Nuclear Science Department,Fudan University2 Physics Department Zhengzhou University

Abstract: This paper investigates the non-statistical effects in 27Al(n,γ) and 28Si(n,γ) reactions.The neutron energies studied range from thermal to 2MeV.The calculated results show that in comparison with medium and heavy nuclei the fractions of non-statistical effects in the total (n,γ) cross sections in the two nuclides are extremely strong.The physical significance of the results and its implication with the measured correlation coefficients are discussed.

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