Chinese Physics C > 2000, Vol. 24 > Issue(12): 1131-1136

Statistical Emission of Hot Nuclei in the 35MeV/u⁴⁰Ar+¹⁹⁷Au Nuclear Reaction

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

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Abstract：
The statistical emission of the 35MeV/u ⁴⁰Ar+ ¹⁹⁷Au was studied. Several silicon △E1+ silicon △E2+CsI(Tl) telescopes with good particle identification and lower energy thresholds were used to collect the experimental data. For the backward angle emission events, the slope nuclear temperature parameters and the isotope nuclear temperature parameters, which were extracted from the slope of energy spectra and double isotope yield ratios of the reaction products respectively, were nearly the same. The slope temperatures were slightly higher than the isotope temperatures. The reliability of the method to extract nuclear temperature has been discussed. For the backward angle events statistical emission is the dominant process, i. e. the particles emitted into backward angles mainly come from the equilibrium decay.

References

[1]

Lecolley J F et al. Phys. Lett., 1996, B387:460 2 Reiedorf W et al. Nucl. Phys., 1997, A612:493 3 Pochodzalla J, Mohlencamp T, Rubehn T et al. Phys. Rev. Lett., 1995, 75: 10404 Agostino M D' et al. Phys. Lett., 1996, B368:2595 Agostino M D' et al. Phys. Lett., 1996, B371: 175 6 Bowman D R et al. Phys. Rev., 1995, C52:818 7 Blaich Th et al. Phys. Rev., 1992, C45:689 8 Moretto L G, Wozniak G J. Annu. Rev. Nucl Part. Sci., 1993, 43:379 9 Moretto L G at al. Phys. Rep., 1995, 275: 133 10 Moretto L G et al. Phys. Rev. Lett., 1996, 76:372 11 Awes T C et al. Phys. Rev., 1982, C25:2361 12 Chitwood C B et al. Phys. Rev, 1986, C34:858 13 WEI ZhiYong, ZHU YongTai. Progress in Physics (in Chinese), 1998, 18:33(魏志勇,诸永泰.物理学进展,1998,18:33)14 WEI ZhiYong, ZHU YongTai. Chinese Physics Letters, 1997, 14 (13): 169; XU HuShan, ZHU YongTai, WEIZhiYong et al. High Energy Phys. and Nucl. Phys. (in Chinese), 1998, 22:601; DUAN LiMin, WANG SuFang,ZHANG BaoGuo. High Energy Phys. and Nucl. Phys. (in Chinese), 1998, 22(9):780–786(徐瑚珊,诸永泰,魏志勇等.高能物理与核物理,1998,22:601); (段利敏,王素芳,张保国.高能物理与核物理,1998, 22(9): 780–786) 15 WEI ZhiYong, ZHU YongTai. High Energy Phys. and Nucl. Phys. 1997, 21(3): 57;WEI ZhiYong, ZHU YongTai. High Energy Phys. and Nucl. Phys. (in Chinese), 1997, 21(7):615(魏志勇,诸永泰.高能物理与核物理,1997,21(7):615) 16 Albergo S, Costa S, Costanzo E. Noveto Cimento, 1985, A89: 1 17 WEI ZhiYong, LI ZuYu, DUAN LiMin et al. Nuclear Techniques(in Chinese), to be published(魏志勇,李祖玉,段利敏等.半导体探测器的厚度确定及CsI的刻度,核技术,待发展) 18 Milazzo P M, Vannini G, AzzanoM et al. Phys. Rev., 1998, C58:953–963

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[2]	XIAO Zhi-Gang,JIN Gen-Ming,WU He-Yu,HU Rong-Jiang,WANG Hong-Wei,LI Zu-Yu,DUAN Li-Min,WANG Su-Fang,WEI Zhi-Yong,ZHANG Bao-Guo,LIU Jian-Ye,ZHU Yong-Tai. Isotropic Distribution of the Projectile-Like Products in the Reaction³⁶Ar+¹²⁴Sn at 35MeV/u. Chinese Physics C, 2003, 27(6): 493-497.
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[9]	Zhang Baoguo,Wang Sufang,Duan Limin,Wen Wanxin,Jin Genming,Zheng Jiwen,Li Zuyu,He Zhiyong,Xiao Zhigang,Wang Hongwei. The Study of Giant Dipole Resonance in Hot Nuclei in the⁴⁰Ar+⁹³Nb Reaction at 25MeV/u. Chinese Physics C, 1998, 22(9): 795-802.
[10]	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 of⁴⁰Ar+^natAg,²⁰⁹Bi at MeV/u. Chinese Physics C, 1997, 21(8): 680-685.
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[13]	He Zhiyong,Li Zuyu,Duan Limin,Jin Genming,Wu Heyu,Dai Guangxi,Li Zhankui,Zhang Baoguo,Wen Wanxin,Qi Yujin. In-plane and Out-of-plane Emission of Light Charged Particle from⁴⁰Ar+¹⁹⁷Au Collisions at 25 MeV/u. Chinese Physics C, 1996, 20(S2): 129-134.
[14]	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 from⁴⁰Ar+¹⁹⁷Au Collisions in Intermediate Energies. Chinese Physics C, 1996, 20(1): 8-12.
[15]	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 MeV⁴⁰)Ar+¹⁹⁷Au Reaction. Chinese Physics C, 1995, 19(4): 305-309.
[16]	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 States and Extraction of Emission Temperature in 25 MeV/u⁴⁰Ar+¹⁹⁷Au. Chinese Physics C, 1995, 19(S3): 215-220.
[17]	Wu Heyu,Jin Genming,Li Zuyu,Dai Guangxi,Qi Yujin,Luo Qingzheng,He Zhiyong,Duan Limin,Zhang Baoguo,Dang Bingrong,Wen Wanxin. Relation Between Temperature and Excitation Energy of Hot Nuclei in the Reaction of⁴⁰Ar＋¹⁹⁷Au at 25MeV/u. Chinese Physics C, 1995, 19(7): 591-597.
[18]	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/u⁴⁰Ar+¹⁹⁷Au. Chinese Physics C, 1995, 19(5): 393-397.
[19]	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 of⁴⁰Ar+¹⁵⁹Tb,¹⁹⁷Au,²⁰⁹Bi at 25MeV/u. Chinese Physics C, 1994, 18(S1): 20-27.
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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 and ZHU HaiDong. Statistical Emission of Hot Nuclei in the 35MeV/u ⁴⁰Ar+ ¹⁹⁷Au Nuclear Reaction[J]. Chinese Physics C, 2000, 24(12): 1131-1136.

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Received: 1999-11-25
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沈阳化工大学材料科学与工程学院沈阳 110142

Statistical Emission of Hot Nuclei in the 35MeV/u⁴⁰Ar+¹⁹⁷Au Nuclear Reaction

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