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

HUO Yu-Kun; YUAN Zhu-Shu; MI Yong; LIU Jian-Feng

Chinese Physics C> 1989, Vol. 13> Issue(5) : 465-469

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

Nuclear Science Department,Fudan University2 Physics Department Zhengzhou University

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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.

References

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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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沈阳化工大学材料科学与工程学院沈阳 110142

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

Received Date: 1900-01-01
Accepted Date: 1900-01-01
Available Online: 1989-05-05

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.