Mass Shell and Even-odd Effects in Radiative Capture Reaction

LIU Jian-Feng; Huo Yu-Kun; YUAN Zhu-Shu

Chinese Physics C> 1991, Vol. 15> Issue(4) : 349-357

Mass Shell and Even-odd Effects in Radiative Capture Reaction

Physics Department,Zhengzhou University,Zengzhou 4500522 Nuclear Science Department Fudan University Shanghai 200433

Abstract
HTML
Reference
Related

PDF

Abstract：
This paper investigates the mass,shell and even-odd effects of the nonstatistical and statistical processes in the radiative nucleon capture reactions.The (n,γ) cross sections for 33 even-neutron target nuclides were studied at En of 0.1 to 3MeV.The results indicate that the nonstatistical capture cross sections do not present any systematically varying pattern with mass number,except for a weak shell effect.The statistical capture cross sections,which depend strongly on the level density,display obvious mass,shell and even-odd effects.The nonstatistical fractions show prominent downward tendency with mass number,as well as the shell effect.

References

[1]

Y. K. Ho, Z. S. Yuan and Y. Mi, Phys. Rev., C39(1989), 1691.[2] Y. K. Ho, J. F. Liu and Z. S. Yuan, Phys. Rev., 040(1989), 2541[3] B. J. Allen, A. R. de L. Musgrave, adv. Nucl. Phys., 10(1978), 129.[4] S. Raman et al., Phys. Rev., C32(1985), 18 and references therein.[5] Y. K. Ho, 3}. F. Liu and C. Coceva, Nucl. Data Sci. Tech., (MITO, Japan, 1988), p. 703.[6] Y. K. Ho and M.A.Lone, Nucl. Phys., A406(1983), 1.[7] I. Bereavist, in Neutron Radiative Cavture, edited by R. E. Chrien (Pergamon, New York, 1984), p. 33.[8] F. J. Liu, Y. K. Ho, and M.A. Lone, in Capture Gamma-Ray Spectroscopy and Related Topics (Knoxville, 1984), Proceeding of the 5-in International Symposium on Capture Gamma-Ray Spectroscopy and Related Tovics, A1P Conf. Proc. No. 125, Edited by S. Raman (A1P, New York, 1984), p. 551.[9] D. G. Gardner, in Neutron Radiatiye Capture, edited by R. E. Chrien (Pergamon, New York, 1984), p. 62, and references therein.[10] F. D. Becchetti and G. W. Greenless, Phys. Rev., 182(1969), 1190.[11] A. Gikbert and A. G. W. Cameron, Can. J. Phys., 43, (1965), 1446.[12] J. L. Cook et al., Aust. J. Phys., 20, (1967), 477.[13] V. Mclane, C. L. Dunford, and P. F. Rose, Neutron Cross Section (Academic, New York, 1988), Vol. 2,Neutron Cross Section Curves.

[1]	ZHOU Feng-Qun , ZHAI Zi-Nan , TUO Fei , LUO Jun-Hua , KONG Xiang-Zhong . A Formula Used to Calculate Cross Section of Isomerous State with Characteristic Gamma-Ray of Ground State in a Special Case and Its Application. Chinese Physics C, 2007, 31(7): 625-628.
[2]	PU Zhong-Sheng , GUAN Qiu-Yun , MA Jun , YAN Dong . Cross Section Measurements for (n,2n), (n,p) and (n,α) Reactions on Germanium Isotopes at the Neutron Energy around 14MeV. Chinese Physics C, 2006, 30(12): 1171-1174.
[3]	HE Guo-Zhu , TUO Fei , KONG Xiang-Zhong . (n,2n),(n,p) and (n,α) Reactions Cross-Sections Measurement on Selenium Isotopes at Neutron Energy of 14MeV. Chinese Physics C, 2006, 30(9): 844-847.
[4]	HE Guo-Zhu , LUO Jun-Hua , LIU Zhong-Jie , KONG Xiang-Zhong . Cross Section Measurements for (n,2n),(n,p)and (n,α) Reactions on Strontium Isotopes at the Neutron Energy About 14MeV. Chinese Physics C, 2005, 29(11): 1057-1060.
[5]	LIU Zu-Hua , ZHOU Hong-Yu . Nuclear Halo Effect on Direct Nucleon Capture Cross Sections. Chinese Physics C, 2005, 29(10): 974-977.
[6]	ZHANG Wei , MENG Jie , ZHANG Shuang-Quan . Production Cross Section of Superheavy Nuclei in Cold Fusion Reactions Based on the Relativistic Mean Field Theory. Chinese Physics C, 2004, 28(1): 61-68.
[7]	LIU Jian-Feng , LI Chun-Juan , ZHANG Guo-Hui . Study on the Mass Energy Relativities of the Reaction Mechanisms in the Neutron Radiative Capture. Chinese Physics C, 2004, 28(8): 832-837.
[8]	PU Zhong-Sheng , KONG Xiang-Zhong , WEI Guo-Cong . Cross Section Measurements for(n,2n)Reactions on Neodymium Isotopes at the Neutron Energies of 13.5,14.1 and 14.6 MeV. Chinese Physics C, 2004, 28(9): 958-960.
[9]	HAN Yin-Lu . Theoretical Analysis of Cross Sections for n+⁵²Cr Reaction. Chinese Physics C, 2004, 28(5): 512-515.
[10]	ZHENG Lei , CUI Ming-Qi , ZHAO Yi-Dong , ZHU Jie , ZHU Pei-Ping . Research of Photoionization Cross-Section of Argon in Soft X-Ray Region of Synchrotron Radiation. Chinese Physics C, 2003, 27(6): 555-558.
[11]	PU Zhong-Sheng , YANG Jing-Kang , KONG Xiang-Zhong . Cross Section Measurements for (n,2n),(n,p) and (n,n′α)Reactions on Gallium Isotopes at the Neutron Energies of 13.5, 14.1 and 14.6 MeV. Chinese Physics C, 2003, 27(7): 581-584.
[12]	Liu Jianfeng , Su Zongdi . Study on Photon Transmission Coefficient and Capture Cross Section of Isomeric State. Chinese Physics C, 1996, 20(6): 563-570.
[13]	WANG Yong-Chang , YANG Jing-Kang , YUAN Jun-Qian , KONG Xiang-Zhong . Cross Section Measurements for (n,d*)(n,t) and (n,n'α) Reactions. Chinese Physics C, 1993, 17(4): 289-293.
[14]	WANG Yong-Chang , YUAN Jun-Qian , YANG Jing-Kang , KONG Xiang-Zhong , REN Zhong-Liang , WANG Hua-Min . Measurement of Some (n,2N) Reaction Cross Sections for Producing Long Half-Life Residues. Chinese Physics C, 1992, 16(8): 731-735.
[15]	MU Yun-Shan , XU Hai-Shan , XIANG Zheng-Yu , LI Ye-Xiang , WANG Shi-Ming , LIU Jian-Feng . Fast Neutron Capture Cross Section of Natural Molybdenum. Chinese Physics C, 1991, 15(1): 66-70.
[16]	YUAN Zhu-Shu , HUO Yu-Kun , LIU Jian-Feng , LU Zu-Hui . An Unified Formalism to Study Nonstatistical Effects in Radiative Vapture Reactions. Chinese Physics C, 1991, 15(12): 1086-1093.
[17]	CHEN Feng-Zhi , WANG Ping , WU Ji-Min , ZHU Yong-Sheng . RADIATIVE CORRECTION OF THE RESONANT CROSS SECTION IN e⁺e^－ COLLISION. Chinese Physics C, 1990, 14(7): 585-595.
[18]	SONG Xiao-Tong , CHEN Zheng . THE FORMATION CROSS SECTION FOR (dμ) ATOM IN RADIATIVE CAPTURE PROCESS. Chinese Physics C, 1986, 10(6): 647-655.
[19]	HUO Yu-Kun , LIU Jian-Feng . A CONSTRUCTIVE INTERFERENCE EFFECT IN THE CHANNEL RADIATIVE CAPTURE PROCESS. Chinese Physics C, 1986, 10(6): 711-714.
[20]	LUO Ma . QCD PREDICTION FOR THE REACTION γ+p→2γ+X. Chinese Physics C, 1984, 8(5): 539-547.

Access

Get Citation

LIU Jian-Feng, Huo Yu-Kun and YUAN Zhu-Shu. Mass Shell and Even-odd Effects in Radiative Capture Reaction[J]. Chinese Physics C, 1991, 15(4): 349-357.

LIU Jian-Feng, Huo Yu-Kun and YUAN Zhu-Shu. Mass Shell and Even-odd Effects in Radiative Capture Reaction[J]. Chinese Physics C, 1991, 15(4): 349-357. shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 1900-01-01
Revised: 1900-01-01

Article Metric

Article Views(2447)
PDF Downloads(459)
Cited by(0)

Policy on re-use

To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Mass Shell and Even-odd Effects in Radiative Capture Reaction

Corresponding author: LIU Jian-Feng,

Physics Department,Zhengzhou University,Zengzhou 4500522 Nuclear Science Department Fudan University Shanghai 200433

Received Date: 1900-01-01

Accepted Date: 1900-01-01

Available Online: 1991-04-05

Abstract: This paper investigates the mass,shell and even-odd effects of the nonstatistical and statistical processes in the radiative nucleon capture reactions.The (n,γ) cross sections for 33 even-neutron target nuclides were studied at En of 0.1 to 3MeV.The results indicate that the nonstatistical capture cross sections do not present any systematically varying pattern with mass number,except for a weak shell effect.The statistical capture cross sections,which depend strongly on the level density,display obvious mass,shell and even-odd effects.The nonstatistical fractions show prominent downward tendency with mass number,as well as the shell effect.

HTML

Reference (1)

Mass Shell and Even-odd Effects in Radiative Capture Reaction

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article