Study on γ-Ray Strength Functions and Energy Spectra in the Neutron Radiative Capture of <SUP>197</SUP>Au

LIU Jian-Feng; ZHAO Wei-Juan; WANG Feng-Ge; SU Zong-Di

Chinese Physics C> 2001, Vol. 25> Issue(10) : 994-1001

Study on γ-Ray Strength Functions and Energy Spectra in the Neutron Radiative Capture of ¹⁹⁷Au

Department of Physics, Zhengzhou University, Zhengzhou, 450052, China2 China Institute of Atomic Energy, Beijing, 102413, China

Abstract
HTML
Reference
Related

PDF

Abstract：
The aim of this paper is to explain theoretically the abnormal protuberances near and after 5.5 MeV in the gamma spectra of the (n, γ) reactions for the nulei in the regions of 110≤A≤140 and 180≤A≤210.
Supposing that in the primary and cascade gamma de-excitation processes of the compound nu- cleus, besides the giant dipole resonance model, there exist the deexcitation processes of the excited states of ⁶He,⁶Li,⁶Be,⁷Li and ⁷Be particle Clusters, the γ-ray strength function in which these pro- cesses are contained was constructed. The (n ,γ) reaction cross sections and the gamma energy spec- tra in the neutron incident energy region from 0.01 MeV to 3MeV for ¹⁹⁷Au were calculated. The re- suIts are in better coincidence with the experiments. Especially for the gamma energy spectra, the abnormal protuberances near and after 5.5MeV were reproduced very well.

References

[1]

Lane A M, Thomas R G. Rev. Mod. Phys., 1958, 30:2572 Allen B J et al. Advances in Nucl. Phys., 1978 , 10: 129 3 Raman S et al. Phys. Rev., 1985, C32:18 4 HUO Yu–Kun et al. Nucl. Phys., 1983, A406:1 5 LJU Jian–Feng et al. High Energy Phys. and Nucl. Phys., 1983, 3:355 (in Chinese)(刘建峰等,高能物理与核物理,1983,3:355)6 Lane A M, Lynn J E. Nucl. Phys., 1959, 11:6467 Kopcky J, Ukl M. Phys. Rev., 1990, C41: 19418 DING Da–Zhao. Progress in Neutron Radiative Capture stydy. Nuclear Physics. Material Compilation of tke Conference in 1978.Beijing: Atomic Energy Press, 1979. 292–306 (in Chinese)(丁大钊.中子辐射俘获研究进展.原子核物理,1978年会议资料选编.北京:原子能出版社,1979.292—306)9 Bergqvist I et al. he. Nucl. Phys., 1970,11: 1 10 Lane A M. Nucl. Phys., 197l, 63:171 11 Barthelomew G A. Advances in Nucl. Phys., 1973, 7: chap.4 12 Ajzenberg–selove F. Nucl. Phys., 1984, A413: 113 Becchetti F D et al. Phys. Rev., 1969, 182: 1190 14 Gilbert A, Cameron A G W. Can. J. Phys., 1965 , 43: 144615 Dietrich S S et al. Atondc Data and Nuclear Data Tables, 1988 , 38: 199 16 M B. Nuclear Data Sheets, 1981, 34: 105 17 Auble R L. Nuclear Data Sheets, 1983, 40: 301 18 EXFOR (Exchange Format), Computerized System for the Storage, Retrieval and Intemational Exchange of Experimental NuclearReaction Data, Coordinated by the IAEA Nuclear Data Section.

[1]	TIAN Jun-Long , LI Xian , WU Xi-Zhen , LI Zhu-Xia , YAN Shi-Wei . Understanding of the dissipation mechanism in ternary fission for the system ¹⁹⁷Au+¹⁹⁷Au. Chinese Physics C, 2009, 33(S1): 109-112. doi: 10.1088/1674-1137/33/S1/035
[2]	DUAN Li-Min , WU He-Yu , JIN Gen-Ming , WANG Su-Fang , LI Zu-Yu , WEI Zhi-Yong , ZHANG Bao-Guo , WANG Hong-Wei , XIAO Zhi-Gang , LIU Yong-Ying , HU Pei-Gang , LU Zhao-Hui , TIAN Wen-Dong , GOU Quan-Bu . Excitation Energy and Temperature of Compound Nuclei in the Reaction of 35MeV/u ⁴⁰Ar+¹⁹⁷Au. Chinese Physics C, 2003, 27(2): 118-123.
[3]	LI Xiang-Qing , HUA Hui , JIANG Dong-Xing , YE Yan-Lin , CHEN Tao , LI Zhi-Huan , GE Yu-Cheng , WANG Quan-Jin , WU He-Yu , JIN Gen-Ming , DUAN Li-Min , XIAO Zhi-Gang , WANG Hong-We , , . Coincident Measurement between Neutron and Fragment in Reaction ¹⁷N+¹⁹⁷Au. Chinese Physics C, 2002, 26(9): 920-925.
[4]	LIU Jian-Feng , ZHAO Wei-Juan , SU Zong-Di . Study on γ-Ray Strength Function of Neutron Radiative Capture for Middle and Heavy Nuclei. Chinese Physics C, 2002, 26(12): 1254-1263.
[5]	WEI Zhi-Yong , DUAN Li-Min , JIN Gen-Ming , WU He-Yu , LI Zu-Yu , SHEN Wen-Qing , XI Hong-Fei , ZHU Yong-Tai , ZHANG Bao-Guo , WANG Hong-Wei , XIAO Zhi-Gang , LIU Yong-Ying , , . Freeze-Out Density of the 35MeV/u ⁴⁰Ar+¹⁹⁷Au Reaction. Chinese Physics C, 2001, 25(9): 839-844.
[6]	WEI ZhiYong , LI ZuYu , LIU YongYing , DUAN LiMin , WU HeYu , ZHANG BaoGuo , WANG HongWei , WANG SuFang , XIAO ZhiGang , LU ZhaoHui , JIN GenMing , ZHU YongTai , HU RongJiang , ZHU HaiDong . Statistical Emission of Hot Nuclei in the 35MeV/u ⁴⁰Ar+¹⁹⁷Au Nuclear Reaction. Chinese Physics C, 2000, 24(12): 1131-1136.
[7]	Zhao Zhizheng , Hu Zhiqinang , Yang Weifan , Li Zongwei , Sun Xiurong , Qin Zhi , Yang Yongfeng , Mu Wantong , Xie Xiujun , Zhang Li , Yuan Shuanggui , Wu Dingqing , Cai Xichen . Isotope Distribution of Ir Produced in Intermediate Energy ¹²C on ¹⁹⁷Au. Chinese Physics C, 1997, 21(5): 402-407.
[8]	He Zhiyong , Duan Limin , Li Zuyu , Jin Genming , Luo Qingzheng , Wu Heyu , Zhang Baoguo , Wen Wanxin , Qi Yujin , Dang Bingrong , Dai Guangxi . Emission Time Measurements of Light Particles from ⁴⁰Ar+¹⁹⁷Au Collisions in Intermediate Energies. Chinese Physics C, 1996, 20(1): 8-12.
[9]	. Nuclear Fragmentation and Particle Production in Interactions Induced by 10.7A GeV ¹⁹⁷Au at BNL/AGS. Chinese Physics C, 1995, 19(8): 703-712.
[10]	Duan Limin , Li Zuyu , Jin Genming , He Zhiyong , Luo Qingzheng , Wu Heyu , Zhang Baoguo , Qi Yujin , Wen Wanxin , Dang Bingrong , Dai Guangxi . Relative Population of State and Extraction of Emission Temperature in 25MeV/u ⁴⁰Ar+¹⁹⁷Au. Chinese Physics C, 1995, 19(5): 393-397.
[11]	Luo Qingzheng , Dai Guangxi , Qi Yujin , Yan Dehong , Wu Heyu , Li Zuyu , Wen Wanxin , Zhang Baoguo , Dang Bingrong , He Zhiyong , Jin Genming . Fission Measurement and Analysis on 46.7MeV/A ¹²C+¹⁵⁹Tb/¹⁹⁷)Au/²⁰⁹Bi System. Chinese Physics C, 1994, 18(3): 202-207.
[12]	Yin Shuzhi , Zhu Yongtai , Zhan Wenlong , Guo Zhongyan , Hu Xiaoqing , Xi Hongfei , Liu Guanhua , Zhou Jianqun , Fan Enjie , Feng Enpu , Wang Xiaoqiu . Complex Fragments Emitted in Reactions of 46．7MeV/u ¹²C on ¹⁹⁷Au,¹¹⁵In and ⁵⁸Ni. Chinese Physics C, 1994, 18(8): 673-679.
[13]	Dai Guangxi , Wu Heyu , Jin Genming , Qi Yujin , Li Zuyu , Duan Limin , He Zhiyong , Luo Qingzeng , Wen Wanxin , Zhang Baoguo , Dang Bingrong , Cai Wei . Ternary Fission Fragments Correlation Measurement in Reactions of ⁴⁰Ar+¹⁵⁹Tb,¹⁹⁷Au,²⁰⁹Bi at 25MeV/u. Chinese Physics C, 1994, 18(S1): 20-27.
[14]	MA Yu-Gang , SHEN Wen-Qing , FENG Jun , GE Ling-Xiao . The Energy Dissipation,Productions of the Subthreshold Pion Mesons and Flowangle in Interdediate-Energy ⁸⁶Kr+¹⁹⁷Au Reaction. Chinese Physics C, 1993, 17(2): 186-192.
[15]	JIANG Dong-Xing , YE Yan-Lin , LIU Hong-Tao , LU Xi-Ting , HUANG Xiao-Lin , XIAO Bin , ZHAN Wen-Long , ZHU Yong-Tai , GUO Zhong-Yan , FENG En-Pu , XI Hong-Fei , LIU Guan-Hua , ZHOU Jian-Qun , YIN Shu-Zhi , ZHU Xiang , WANG Bing , FENG Jun . Linear Momentum Transfer in the Reactions Induced by 50MeV/A¹²C Bombarding ²⁰⁹Bi and ¹⁹⁷Au. Chinese Physics C, 1992, 16(6): 556-562.
[16]	ZHAO You-Xiong , GUO Zhong-Yan , ZHU Yong-Tai , ZHAN Wen-Long , HU Xiao-Qing , XI Hong-Fei , LIU Guan-Hua , ZHOU Jian-Qun , FENG En-Pu , YIN Shu-Zhi , WEI Zhi-Yong , Fan En-Jie , MA Yu-Gang . The Study of α Emission Induced by 46.7MeV/u ¹²C on ⁵⁸Ni、¹¹⁵In and ¹⁹⁷Au. Chinese Physics C, 1992, 16(11): 1022-1029.
[17]	Dai Guangxi , Qi Yujin , Zheng Jiwen , Liu Ximing , Chen Yuanda , R. Stokstad , J. Pouliot , A. Harmon , D. Digregorio . Fission Measurement on 5.5 to 22 MeV/A ²⁸Si + ¹⁹⁷Au Systems (I) Linear Momentum Transfer and Angular Distribution off Reaction Plane. Chinese Physics C, 1990, 14(S4): 399-406.
[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]	WANG DA-YAN , LI ZU-YU , YUAN SHUANG-GUI , GUO ZHONG-YAN , JIN GEN-MING , XU GUO-JUN , YUE HAI-KUI , WANG XI-MING , CHEN JU-SHENG , ZENG WEN-BING , XIE HONG-MEI , QIAN ZHENG-GUANG , ZHANG LI DAI GUANG-XI , . THE MASSIVE TRANSFER IN ¹²C+¹⁹⁷Au REACTION. Chinese Physics C, 1982, 6(5): 609-615.
[20]	YANG WEI-FAN , LI YING-JUN , YU JU-SHENG , ZHAO XIN-YUAN . ISOMERIC CROSS SECTION RATIO IN THE ¹⁹⁷Au(n,2n)¹⁹⁶Au REACTION. Chinese Physics C, 1981, 5(5): 593-599.

Access

Get Citation

LIU Jian-Feng, ZHAO Wei-Juan, WANG Feng-Ge and SU Zong-Di. Study on γ-Ray Strength Functions and Energy Spectra in the Neutron Radiative Capture of ¹⁹⁷Au[J]. Chinese Physics C, 2001, 25(10): 994-1001.

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2000-09-22
Revised: 1900-01-01

Article Metric

Article Views(1251)
PDF Downloads(614)
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

Study on γ-Ray Strength Functions and Energy Spectra in the Neutron Radiative Capture of ¹⁹⁷Au

Corresponding author: LIU Jian-Feng,

Department of Physics, Zhengzhou University, Zhengzhou, 450052, China2 China Institute of Atomic Energy, Beijing, 102413, China

Received Date: 2000-09-22

Accepted Date: 1900-01-01

Available Online: 2001-10-05

Abstract: The aim of this paper is to explain theoretically the abnormal protuberances near and after 5.5 MeV in the gamma spectra of the (n, γ) reactions for the nulei in the regions of 110≤A≤140 and 180≤A≤210.
Supposing that in the primary and cascade gamma de-excitation processes of the compound nu- cleus, besides the giant dipole resonance model, there exist the deexcitation processes of the excited states of ⁶He,⁶Li,⁶Be,⁷Li and ⁷Be particle Clusters, the γ-ray strength function in which these pro- cesses are contained was constructed. The (n ,γ) reaction cross sections and the gamma energy spec- tra in the neutron incident energy region from 0.01 MeV to 3MeV for ¹⁹⁷Au were calculated. The re- suIts are in better coincidence with the experiments. Especially for the gamma energy spectra, the abnormal protuberances near and after 5.5MeV were reproduced very well.

HTML

Reference (1)

Study on γ-Ray Strength Functions and Energy Spectra in the Neutron Radiative Capture of ¹⁹⁷Au

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article

Study on γ-Ray Strength Functions and Energy Spectra in the Neutron Radiative Capture of ¹⁹⁷Au

Corresponding author: LIU Jian-Feng,

HTML

目录

Study on γ-Ray Strength Functions and Energy Spectra in the Neutron Radiative Capture of 197Au

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article

Study on γ-Ray Strength Functions and Energy Spectra in the Neutron Radiative Capture of 197Au

Corresponding author: LIU Jian-Feng,

HTML

目录

Study on γ-Ray Strength Functions and Energy Spectra in the Neutron Radiative Capture of ¹⁹⁷Au

Study on γ-Ray Strength Functions and Energy Spectra in the Neutron Radiative Capture of ¹⁹⁷Au