Time Scsle for Emission of Intermediate Mass Fragments in E/A=30MeV <SUP>40</SUP>Ar+<SUP>nat</SUP>Ag Reaction

Li Zuyu; Wang Hongwei; He Zhiyong; Dun Limin; Zhang Baoguo; Dai Guangxi; Fu Yanbiao; Jin Genming

Chinese Physics C> 1998, Vol. 22> Issue(8) : 684-689

Time Scsle for Emission of Intermediate Mass Fragments in E/A=30MeV ⁴⁰Ar+^natAg Reaction

Institute of Modern Physics,THe Chinese Academy of Sciences, Lanzhou 730000

Abstract
HTML
Reference
Related

PDF

Abstract：
Fragment-fragment conelation functions have been measured in E/A=30 MeV ⁴⁰Ar+^natAg reaction via the technique of intensity interferometry. Emission times of intermediate mass fragments have been extracted from reduced velocity correlation functions by using the threebody trajectory model. The average emission time of intermediate mass fragments varies with the energy of fragments. It decreases from about 300fm/c for low energy fragments to about 80fm/c for energetic fragments. After subtmcting the contribution of projectile-like fragments, average emission times of mid-rapidity fragments are of the order of 250fm/c for this reaction.It indicates that intermediate mass fragments emitted in this reaction mainly come from sequential binary decays.

References

[1]

Harris J W et al. Nucl. Phys., 1987, A471:241C-252C[2] de Souza R T et al. Phys. Lett, 1991, B268:6-11[3] Bowman D R et al. Phys. Rev. Lett., 1991,67: 1527-1530[4] Trockel R et al. Phys. Rev. Lett, 1987, 59:2844-2847[5] Kim Y D et al. Phys. Rev. Lett, 1991, 67: 14-17[6] Bauge E et al. Phys. Rev. Lett, 1993, 70:3705--3708[7] He Zhi Yong et al. Chinese Physics Letters, 1995, 12(9):521-523[8] He Zhi Yong et al. High Energy Physics and Nuclear Physics (in Chinese), 1996, 20(7):596-600(贺智勇等。高能物理与核物理,1996,20(7):596-600)[9] He Zhi Yong et al. Nucl. Phys., 1997, A620:214-228[10] He Zhi Yong et al. Acta Physica Sinica (in Chinese), 1997, 46(7): 1312-1318(贺智勇等。物理学报1997,46(7):1312-1318)[11] Li Zu Yu et al. Nucl. Instr. and Meth., 1996, A373:198--201[12] Kim Y D et al. Phys. Rev., 1992, C45:387-395[13] Elmaani A et al. Nucl. Instr. and Meth., 1992, A313:401-412[14] Elmaani A et al. Phys. Rev., 1993, C47:1321-1324[15] Gelbke C K Nucl. Phys., 1992, A538:65C-74C[16] Friedman W A et al. Phys. Rev., 1990, C42:667-673[17] Peilert G et al. Phys. Rev., 1989, C39: 1402-1419[18] Bod D H, Glosli J N. Phys. Rev., 1988, C37:91--100;1990, C42:R502-R505

[1]	HU Rong-Jiang , XIAO Zhi-Gang , WU He-Yu , DUAN Li-Min , WANG Hong-Wei , YUAN Xiao-Hua , JIN Gen-Ming , ZHU Yong-Tai , LI Zu-Yu , WANG Su-Fang , XU Hu-Shan , ZHANG Bao-Guo , WEI Zhi-Yong , FENG Zhao-Qing , FU Fen . Entrance Channel Dependence of the Correlation Function of IMFs in ³⁶Ar+^112,124Sn at 35MeV/u. Chinese Physics C, 2007, 31(4): 350-356.
[2]	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.
[3]	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.
[4]	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.
[5]	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.
[6]	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.
[7]	WANG HongWei , LI ZuYu , HE ZhiYong , DUAN LiMin , ZHANG BaoGuo , FU YanBiao , JIN GenMing , WU HeYu , DAI GuangXi . Space-Time Evolution of Projectile-Like Fragment Emission for ⁴⁰Ar +^natAg Reaction at 30MeV/u. Chinese Physics C, 2000, 24(1): 35-40.
[8]	Zheng Jiwen , Wu Enjiu , Zhang Chun , Xiao Zhigang , Wang Sufang , Yin Shuzhi , Jin Genming , Tan Jilian , Jin Weiyang , Song Mingtao , Li Zuyu , Wu Heyu , He Zhiyong , Yin Xu , Peng Xinping , Jiang Dengxing , Qian Xing . Measurement of Fission Time Scale and Excitation Energy at Scission for 25MeV/u ⁴⁰Ar+²⁰⁹Bi Fission Reaction. Chinese Physics C, 1999, 23(10): 946-953.
[9]	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.
[10]	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.
[11]	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.
[12]	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.
[13]	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.
[14]	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.
[15]	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.
[16]	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.
[17]	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.
[18]	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.
[19]	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.
[20]	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.

Access

Get Citation

Li Zuyu, Wang Hongwei, He Zhiyong, Dun Limin, Zhang Baoguo, Dai Guangxi, Fu Yanbiao and Jin Genming. Time Scsle for Emission of Intermediate Mass Fragments in E/A=30MeV ⁴⁰Ar+^natAg Reaction[J]. Chinese Physics C, 1998, 22(8): 684-689.

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

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

Article Metric

Article Views(2824)
PDF Downloads(529)
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

Time Scsle for Emission of Intermediate Mass Fragments in E/A=30MeV ⁴⁰Ar+^natAg Reaction

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article

Time Scsle for Emission of Intermediate Mass Fragments in E/A=30MeV ⁴⁰Ar+^natAg Reaction

Corresponding author: Li Zuyu,

HTML

目录

Time Scsle for Emission of Intermediate Mass Fragments in E/A=30MeV 40Ar+natAg Reaction

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article

Time Scsle for Emission of Intermediate Mass Fragments in E/A=30MeV 40Ar+natAg Reaction

Corresponding author: Li Zuyu,

HTML

目录

Time Scsle for Emission of Intermediate Mass Fragments in E/A=30MeV ⁴⁰Ar+^natAg Reaction

Time Scsle for Emission of Intermediate Mass Fragments in E/A=30MeV ⁴⁰Ar+^natAg Reaction