Space-Time Evolution of Projectile-Like Fragment Emission for <SUP>40</SUP>Ar +<SUP>nat</SUP>Ag Reaction at 30MeV/u

WANG HongWei; LI ZuYu; HE ZhiYong; DUAN LiMin; ZHANG BaoGuo; FU YanBiao; JIN GenMing; WU HeYu; DAI GuangXi

Chinese Physics C> 2000, Vol. 24> Issue(1) : 35-40

Space-Time Evolution of Projectile-Like Fragment Emission for ⁴⁰Ar +^natAg Reaction at 30MeV/u

Institute of Modern Physics, The Chinese Academy of Sciences, Lanzhou 730000, China

Abstract
HTML
Reference
Related

PDF

Abstract：
The emission time of intermediate mass fragments (IMF) has been studied as a function of spatial evolution of the emission source for ⁴⁰Ar+^natAg reaction at 30MeV/u, and the spatial-time evolution of projectile-like fragments emission has also been discussed. The investigation for spatial-time evolution of the reaction system shows that the emission time of the IMF mainly depends on the correlation functions and the density of nuclear matter, and that it is not sensitive to the mass number of emitting sources. For high-energy fragments, a smaller nuclear density would lead to a smaller assignment for emission time τ; therefor the τ values extracted from the normal nuclear density could be taken as upper limits of real τ values. For the mid-velocity fragments, their emission times do not change with size of the source and these τ values could be taken as the real values directly.

References

[1]

Kim Y D et al. Phys. Rev., 1992, C45:338–352 2 De Souza et al. Phys. Lett., 1991, B268:6–113 Bowman D R et al. Phys. Rev. Lett., 1991, 67: 1527–1530 4 LI ZuYu et al. Nuclear Techniques. (in Chinese), 1995, 18(3): 148–151(李祖玉等.核技术,1995,18(3):148–151)5 LI ZuYu et al. Nuclear Techniques. (in Chinese), 1998, 21(1): 11–15(李祖玉等.核技术,1998,21(1):11–15) 6 Elmaani A et al. Nucl. Instr. Meth., 1992, A313:401–412 7 LI ZuYu et al. High Energy Physics and Nuclear Physics (in Chinese), 1998, 22(8):684–689(李祖玉等.高能物理与核物理,1998,22(8):684–689)8 HE ZhiYong et al. Acta Physica Sinica, 1997, 46(7): 1312–1318 9 HE ZhiYong et al. High Energy Physics and Nuclear Physics (in Chinese), 1998, 22(8):678–683(贺智勇等.高能物理与核物理, 1998, 22(8): 678–683)10 HE ZhiYong et al. Acta Physica Sinica, 1998, 47(6): 916–921

[1]	HU Rong-Jiang , WU He-Yu , ZHU Yong-Tai , JIN Gen-Ming , DUAN Li-Min , XIAO Zhi-Gang , WANG Hong-Wei , LI Zu-Yu , WANG Su-Fang , ZHANG Bao-Guo , WEI Zhi-Yong , LU Zhao-Hui , ZHU Hai-Dong , FENG Zhao-Qing , YUAN Xiao-Hua . Isospin Effect on Relative State Population Temperature in the Reactions ⁴⁰Ar+ ^112,124Sn at 30MeV/u. Chinese Physics C, 2004, 28(2): 152-157.
[2]	XIAO Zhi-Gang , WU He-Yu , WANG Hong-Wei , LI Zu-Yu , JIN Gen-Ming , DUAN Li-Min , ZHANG Bao-Guo , HU Rong-Jiang , WEI Zhi-Yong , LIU Yong-Ying , WANG Su-Fang , LU Zhao-Hui , ZHU Yong-Tai , ZHU Hai-Dong . Isospin Effect on the Slope Temperature at Backward Angles in the Reactions 30MeV/u ⁴⁰Ar+^112,124Sn. Chinese Physics C, 2001, 25(7): 643-650.
[3]	XIAO Zhi-Gang , WU He-Yu , JIN Gen-Ming , WANG Hong-Wei , HU Rong-Jiang , LIU Yong-Ying , LI Zu-Yu , DUAN Li-Min , ZHANG Bao-Guo , WEI Zhi-Yong , WANG Su-Fang , ZHU Yong-Tai , ZHU Hai-Dong , LU Zhao-Hui . Isotope Ratios of Light Charged Particles and Temperature in the Reactions 30MeV/u⁴⁰Ar+^112,124Sn. Chinese Physics C, 2001, 25(11): 1071-1076.
[4]	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.
[5]	GOU QuanBu , ZHU YongTai , XU HuShan , WEI ZhiYong , LI SongLin , LU Jun , ZHANG YuHu , WANG Qi , JIANG ZhongHe . Energy Spectra of Intermediate Mass Fragments Emitted in 30 MeV/u ⁴⁰Ar+¹¹⁵In Reaction. Chinese Physics C, 2000, 24(10): 927-932.
[6]	Gou Quanbu , Zhu Yongtai , Xu Hushan , Wei Zhiyong , Lu Jun , Zhang Yuhu , Wang Qi , Li Songlin , Wu Zhongli . Element Distributions of Intermediate Mass Fragments Emitted in 30 MeV/u ⁴⁰Ar+^58,64Ni and ¹¹⁵In Reactions. Chinese Physics C, 1999, 23(6): 512-517.
[7]	Gou Quanbu , Zhu Yongtai , Xu Hushan , Wei Zhiyong , Lu Jun , Zhang Yuhu , Wang Qi , Li Songlin , Wu Zhongli . The Angular Distributions of intermediate Mass Fragments Emittsd in 30 MeV/u ⁴⁰Ar+^58,64Ni and ¹¹⁵In Reactions. Chinese Physics C, 1999, 23(4): 328-333.
[8]	Dai Guangxi , He Zhiyong , Fu Yanbiao , Duan Limin , Li Zuyu , Zhang Baoguo , Liu Guoxing , Wu Heyu . Comparison Between Hot Nuclei Temperature Values Deduced by Two Methods in ⁴⁰Ar+¹⁵⁹Tb and ^natAg Reactions at 30MeV/u. Chinese Physics C, 1999, 23(3): 223-230.
[9]	Li Zuyu , Wang Hongwei , He Zhiyong , Duan Limin , Zhang Baoguo , Dai Guangxi , Fu Yanbiao , Jin Genming , Wu Heyu . Origins of Intermediate Mass Fragments for ⁴⁰Ar+^natAg Reaction at 30 MeV/u. Chinese Physics C, 1999, 23(8): 753-759.
[10]	Lin Yuangen , Zhan Wenlong , Guo Zhongyan , Zhou Jianqun , Zhao Youxiong , Liu Guanhua , Wang Jinchuan , Luo Yongfeng , Lei Huaihong , Qi Zhong , Zhang Wansheng , Qin Lijun . Study of Isotopic Distributions of the Fragments from the 25MeV/u ⁴⁰Ar Induced Reactions. Chinese Physics C, 1998, 22(5): 393-397.
[11]	Xu Hushan , Zhu Yongtai , Gou Quanbu , Wei Zhiyong , Lu Jun , Wang Qi , Li Songlin , Zhang Yuhu , Jin Genming , Wu Zhongli , Xie Yuanxiang . Temperature Parameters Extracted in ⁴⁰Ar Induced Reactions at 30MeV/u. Chinese Physics C, 1998, 22(7): 596-601.
[12]	He Zhiyong , Li Zuyu , Duan Limin , Zhang Baoguo , Dai Guangxi , Jin Genming , Fu Yanbiao , Wang Hongwei . Origins of the Forward Emission of Complex Fragments for ⁴⁰Ar+¹⁵⁹Tb Reaction at 30MeV/u. Chinese Physics C, 1998, 22(1): 13-19.
[13]	He Zhiyong , Li Zuyu , Duan Limin , Zhang Baoguo , Jin Genming , Dai guangxi , Wang Hongwei , Fu Yanbiao . Space-Time Evolution During Emission of Intermediate Mass Fragmentform ⁴⁰Ar+¹⁵⁹Tb Reaction at 30 MeV/u. Chinese Physics C, 1998, 22(8): 678-683.
[14]	Li Zuyu , Wang Hongwei , He Zhiyong , Dun Limin , Zhang Baoguo , Dai Guangxi , Fu Yanbiao , Jin Genming . Time Scsle for Emission of Intermediate Mass Fragments in E/A=30MeV ⁴⁰Ar+^natAg Reaction. Chinese Physics C, 1998, 22(8): 684-689.
[15]	Yin Shuzhi , Jin Weiyang , Zhang Chun , Jin Genming , Zheng Jiwen , Wu Enjiu , Tan Jilian , Li Zuyu , Wang Sufang , Song Mingtao , Wu Heye , He Zhiyong , Jiang Dongxing , Qian Xing . Temperatures and Excitation Energies of Hot Nuclei in the Reactions of ⁴⁰Ar+^natAg, ²⁰⁹Bi at 25 MeV/u. Chinese Physics C, 1997, 21(S3): 29-34.
[16]	Yin Shuzhi , Jin Weiyang , Zhang Chun , Jin Genming , Zheng Jiwen , Wu Enjiu , Tan Jilian , Li Zuyu , Wang Sufang , Song Mingtao , Wu Heyu , He Zhiyong , Jiang Dongxing , Qian Xing . Temperatures and Excitation Energies of Hot Nuclei in Reactions of ⁴⁰Ar+^natAg,²⁰⁹Bi at MeV/u. Chinese Physics C, 1997, 21(8): 680-685.
[17]	Qian Xing , Jiang Dongxing , Qian Tao , Hua Hui , Lin Junsong , Wu Enjiu , Zheng Jiwen , Jin Genming , Yin Shuzhi , Tan Jilian , Jin Weiyang , Song Mingtao , Li Zuyu , He zhiyong , Wang Sufang . Evaporation of Intermediate-Mass Fragments From Hot-Nuclei in Reaction ⁴⁰Ar+¹⁵⁹Tb at 25MeV/u. Chinese Physics C, 1996, 20(4): 304-310.
[18]	Liu Guoxing , Cheng Keliang , Yu Xian , Zheng Jiwen , Jin Weiyang , Sun Tongyu , Wu Dingqing , Zhao Lili , Zhang Xiang , Yin Xinmin , Qin Zhi . Fragment Angular Distributions of the 600 MeV ⁴⁰)Ar+¹⁹⁷ Au Reaction. Chinese Physics C, 1995, 19(4): 305-309.
[19]	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.
[20]	SHEN Wen-Qing , ZHAN Wen-Long , ZHU Yong-Tai , YIN Shu-Zhi , GUO Zhong-Yan , QI Wei-Min , FAN Guo-Ying , JIN Gen-Ming , LI Song-Lin , ZHANG Zhen , ZHANG Yu-Hu . COINCIDENCE MEASUREMENT BETWEEN α-PARTICLES AND PROJECTILE-LIKE FRAGMENTS IN REACTION OF 82.7MeV ¹⁶O ON ²⁷Al. Chinese Physics C, 1987, 11(1): 104-110.

Access

Get Citation

WANG HongWei, LI ZuYu, HE ZhiYong, DUAN LiMin, ZHANG BaoGuo, FU YanBiao, JIN GenMing, WU HeYu and DAI GuangXi. Space-Time Evolution of Projectile-Like Fragment Emission for ⁴⁰Ar +^natAg Reaction at 30MeV/u[J]. Chinese Physics C, 2000, 24(1): 35-40.

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 1998-11-11
Revised: 1900-01-01

Article Metric

Article Views(2800)
PDF Downloads(666)
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

Space-Time Evolution of Projectile-Like Fragment Emission for ⁴⁰Ar +^natAg Reaction at 30MeV/u

Corresponding author: WANG HongWei,

Institute of Modern Physics, The Chinese Academy of Sciences, Lanzhou 730000, China

Received Date: 1998-11-11

Accepted Date: 1900-01-01

Available Online: 2000-01-05

Abstract: The emission time of intermediate mass fragments (IMF) has been studied as a function of spatial evolution of the emission source for ⁴⁰Ar+^natAg reaction at 30MeV/u, and the spatial-time evolution of projectile-like fragments emission has also been discussed. The investigation for spatial-time evolution of the reaction system shows that the emission time of the IMF mainly depends on the correlation functions and the density of nuclear matter, and that it is not sensitive to the mass number of emitting sources. For high-energy fragments, a smaller nuclear density would lead to a smaller assignment for emission time τ; therefor the τ values extracted from the normal nuclear density could be taken as upper limits of real τ values. For the mid-velocity fragments, their emission times do not change with size of the source and these τ values could be taken as the real values directly.

HTML

Reference (1)

Space-Time Evolution of Projectile-Like Fragment Emission for ⁴⁰Ar +^natAg Reaction at 30MeV/u

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article

Space-Time Evolution of Projectile-Like Fragment Emission for ⁴⁰Ar +^natAg Reaction at 30MeV/u

Corresponding author: WANG HongWei,

HTML

目录

Space-Time Evolution of Projectile-Like Fragment Emission for 40Ar +natAg Reaction at 30MeV/u

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article

Space-Time Evolution of Projectile-Like Fragment Emission for 40Ar +natAg Reaction at 30MeV/u

Corresponding author: WANG HongWei,

HTML

目录

Space-Time Evolution of Projectile-Like Fragment Emission for ⁴⁰Ar +^natAg Reaction at 30MeV/u

Space-Time Evolution of Projectile-Like Fragment Emission for ⁴⁰Ar +^natAg Reaction at 30MeV/u