Evaporation of Intermediate-Mass Fragments From Hot-Nuclei in Reaction <SUP>40</SUP>Ar+<SUP>159</SUP>Tb at 25MeV/u

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

Chinese Physics C> 1996, Vol. 20> Issue(4) : 304-310

Evaporation of Intermediate-Mass Fragments From Hot-Nuclei in Reaction ⁴⁰Ar+¹⁵⁹Tb at 25MeV/u

Department of Technical Physics,Peking University, Beijing 1008712 Institute of Modern Physics,The Chinese Academy of Sciences,Lanzhou 730000

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Abstract：
The inclusive energy spectra of intermediate-mass fragments(IMF)(3≤Z≤9)have been measured in the range from 20°to 155°for ⁴⁰Ar+¹⁵⁹Tb reaction at 25MeV/u.At backward angles,the spectra of IMF show a characteristic of statistic evaporation and can be well fitted by a moving source with same parameters.The obtained source velocity and temperature are in agreement with the corresponding values of hot nuclei produced in an incomplete-fusion process.Therefore,it seems that there IMF are statistically evaporated from a same source.The experimental results have for compared with the predictions of the statistical model using GEMINI code.

References

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[4]	WANG JinChuan , ZHAN WenLong , GUO ZhongYan , XI HongFei , LIU Hang , ZHOU JianQun , ZHAO YouXiong . Angular and Z Distributions of the Fragments at Forward and Intermediate Angles in the Reaction of 25MeV/u ⁴⁰Ar+¹¹⁵In,⁵⁸Ni,²⁷Al. Chinese Physics C, 2000, 24(1): 41-48.
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[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 , 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.
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[19]	Xie Yuanxiang , Luo Qingzheng , Lu Jun . Investigation of Intermediate Mass Fragments Emitted in the Reaction of 294MeV ²⁰Ne+¹⁵⁹Tb. Chinese Physics C, 1994, 18(11): 982-989.
[20]	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.

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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 and Wang Sufang. Evaporation of Intermediate-Mass Fragments From Hot-Nuclei in Reaction ⁴⁰Ar+¹⁵⁹Tb at 25MeV/u[J]. Chinese Physics C, 1996, 20(4): 304-310.

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Received: 1900-01-01
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Evaporation of Intermediate-Mass Fragments From Hot-Nuclei in Reaction ⁴⁰Ar+¹⁵⁹Tb at 25MeV/u

Corresponding author: Qian Xing,

Department of Technical Physics,Peking University, Beijing 1008712 Institute of Modern Physics,The Chinese Academy of Sciences,Lanzhou 730000

Received Date: 1900-01-01

Accepted Date: 1900-01-01

Available Online: 1996-04-05

Abstract: The inclusive energy spectra of intermediate-mass fragments(IMF)(3≤Z≤9)have been measured in the range from 20°to 155°for ⁴⁰Ar+¹⁵⁹Tb reaction at 25MeV/u.At backward angles,the spectra of IMF show a characteristic of statistic evaporation and can be well fitted by a moving source with same parameters.The obtained source velocity and temperature are in agreement with the corresponding values of hot nuclei produced in an incomplete-fusion process.Therefore,it seems that there IMF are statistically evaporated from a same source.The experimental results have for compared with the predictions of the statistical model using GEMINI code.

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Evaporation of Intermediate-Mass Fragments From Hot-Nuclei in Reaction ⁴⁰Ar+¹⁵⁹Tb at 25MeV/u

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Evaporation of Intermediate-Mass Fragments From Hot-Nuclei in Reaction ⁴⁰Ar+¹⁵⁹Tb at 25MeV/u

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Evaporation of Intermediate-Mass Fragments From Hot-Nuclei in Reaction 40Ar+159Tb at 25MeV/u

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Evaporation of Intermediate-Mass Fragments From Hot-Nuclei in Reaction 40Ar+159Tb at 25MeV/u

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Evaporation of Intermediate-Mass Fragments From Hot-Nuclei in Reaction ⁴⁰Ar+¹⁵⁹Tb at 25MeV/u

Evaporation of Intermediate-Mass Fragments From Hot-Nuclei in Reaction ⁴⁰Ar+¹⁵⁹Tb at 25MeV/u