Isospin Effect on Relative State Population Temperature in the Reactions <SUP>40</SUP>Ar+ <SUP>112,124</SUP>Sn at 30MeV/u

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

Chinese Physics C> 2004, Vol. 28> Issue(2) : 152-157

Isospin Effect on Relative State Population Temperature in the Reactions ⁴⁰Ar+ ^112,124Sn at 30MeV/u

Institute of Modem Physics,Chinese Academy of Sciences,Lanzhou 730000,China2 Department of Physics,The Graduate School of the Chinese Academy of Sciences,Beijing 100039,China

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Abstract：
An array of 13 detector telescopes has been used for detecting small-angle particle-particle correlations in the reactions ⁴⁰Ar+^112,124Sn at 30MeV/u. The α-α correlation functions were extracted from two-particle coincident events. A three-body trajectory code MENEKA was used to calculate the background correlation function. The detection efficiency was calculated by using the Monte-Carlo method. After subtracting the background correlation and making the detection efficiency correction, the temperatures of 4.18±0.25 0.21 MeV and 4.10±0.22 0.20MeV are obtained from relative populations of ⁸Be states for the reaction systems with different isospin,⁴⁰Ar+¹¹²Sn and ⁴⁰Ar+¹²⁴Sn, respectively. From the relationship between the state population temperature and outgoing particle energies, it is found that the emission temperature decreases with increase of the particle energies for both studied reaction systems. For the neutron deficient system ⁴⁰Ar+¹¹²Sn the emission temperature is 5.13±0.30 0.26MeV for the lower emitting particle energies and 3.87±0.37 0.29MeV for the higher emitting particle energies. And for the neutron rich system ⁴⁰Ar+¹²⁴Sn the emission temperature is 5.39±0.30 0.26MeV for the lower emitting particle energies and 3.32± 0.28 0.23MeV for the higher emitting particle energies. This kind of isospin dependence is discussed.

References

[1]

.Wada R,Fabris D,Hagel Ket al.Phys.Rev.,1989,C39;497-5152.WU H,J IN G.LI Z et al.Nucl.Phys.,1997,A617;385-3943.J IN Gen-Ming,Nucl.Phy.Rev.,1998,15;227-235 (in Chinese)(靳根明.原子核物理评论,1998,15;227-235)4.Hauger J A,Albergo S,Bieser F et al.Phys.Rev.Lett.,1996,77;235—2385.Hauger J A,Warren P,Albergo S et al.Phys.Rev.,1998,C57;7646.DUAN Li-Min et al.HEP NP,1995,19;393-397(in Chinese)(段利敏等.高能物理与核物理,1995,19;393-397)7.HE Zhi-Yong et al.Acta Phy.Sin.,1997,46;35-41 (in Chinese)(贺智勇等,物理学报,1997,46;35-41)8.Pochadzalla J,Mêhlenkamp T,Rubehn T et al.Phys.Rev.Lett.,1995,75;1040-10439.LI B A,KO C M,Bauer W.Inter Jour.Mod.Phys.,1988,E2;14710.TsangMB,Zhu F,Lynch W Get al.Phys.Rev.,1996,C53;R105711.WU He-Yu,XIAO Zhi-Gang,LI Zu-Yu et al.HEP NP,1999,23(11);1115 (in Chinese)(吴和宇,肖志刚,李祖玉等.高能物理与核物理,1999,23(11);1115)12.XIAO Zhi-Gang,WU He-Yu,WANG Hong-Wei et al.HEP NP,2001,25(7);643 (in Chinese)(肖志刚,吴和宇,王宏伟等.高能物理与核物理,2001,25(7);643)13.XIAO Zhi-Gang,WU He-Yu,WANG Hong-Wei et al.HEP NP,2001,25(11);1071 (in Chinese)(肖志刚,吴和宇,王宏伟等.高能物理与核物理,2001,25 (11);1071)14.LI Zu-Yu,J IN Gen-Ming,HE Zhi-Yong et al.Nucl.Instr.andMeth.,1996,A373;19815.Chitwood C B et al.Phys.Rev.Lett.,1985,54;30216.Elamaani A et al.Nucl.Inst.and Meth.,1992,A313;40117.Borderie B et al.Z Phys.,1984,318A:315-32118.Viola V E et al.Nucl.Phys.,1992,A538;291c-298c19.Wile J L et al.Phys.Rev.,1992,C45;2300-2319

[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]	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]	XIAO Zhi-Gang , WU He-Yu , LI Zu-Yu , JIN Gen-Ming , WANG Hong-Wei , 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 . Relaxation of Isospin Degree of Freedom in the Reactions ³⁶Ar+^112,124Sn at 35MeV/u. Chinese Physics C, 2001, 25(6): 494-499.
[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]	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.
[6]	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.
[7]	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.
[8]	ZHANG FengShou , CHEN LieWen , MING ZhaoYu , ZHU ZhiYuan . Isospin Effects on Multifragmentation in Reactions of ¹¹²)Sn+¹¹²Sn and ¹²⁴Sn+¹²⁴Sn at 40MeV/u. Chinese Physics C, 2000, 24(3): 238-243.
[9]	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.
[10]	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.
[11]	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.
[12]	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.
[13]	Wu Heyu , Xiao Zhigang , Li Zuyu , Wang Hpmgweo , Duan Limin , Zhang Baoguo , Liu Yongying , Wang Sufang , Jin Genming , Xiao Guoqing , Guo Zhongyan , Zhu Yongtai . Isospin Effect on the Emission Mechanism of Hot Nuclei in 35MeV/u ⁴⁰Ar +¹¹²Sn/¹²⁴Sn Reactions. Chinese Physics C, 1999, 23(11): 1115-1118.
[14]	Duan Limin , Wang Sufang , Zhang Baoguo , Wen Wanxin , Jin Genming , Zheng Jiwen , He Zhiyong , Li Zuyu , Tan Jilian , Xiao Zhigang , Wang Hongwei , WU Heyu . Excitation Energy and Temperature of Hot Nucleiin the Reaction of 25 MeV/u ⁴⁰Ar+⁹³Nb. Chinese Physics C, 1998, 22(9): 780-786.
[15]	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.
[16]	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.
[17]	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.
[18]	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.
[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]	WANG Da-Yan , JIN Gen-Ming , ZHANG Li , YUE Hai-Kui , WANG Xi-Ming . INFLUENCE OF THE NEUTRON NUMBER OF TARGET NUCLEUS ON CROSS SECTIONS OF PARTICLES EMISSION IN ¹²C+^112,124Sn. Chinese Physics C, 1986, 10(1): 68-74.

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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 and YUAN Xiao-Hua. Isospin Effect on Relative State Population Temperature in the Reactions ⁴⁰Ar+ ^112,124Sn at 30MeV/u[J]. Chinese Physics C, 2004, 28(2): 152-157.

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Received: 2003-07-08
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沈阳化工大学材料科学与工程学院沈阳 110142

Isospin Effect on Relative State Population Temperature in the Reactions ⁴⁰Ar+ ^112,124Sn at 30MeV/u

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Isospin Effect on Relative State Population Temperature in the Reactions ⁴⁰Ar+ ^112,124Sn at 30MeV/u

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Isospin Effect on Relative State Population Temperature in the Reactions 40Ar+ 112,124Sn at 30MeV/u

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通讯作者: 陈斌, bchen63@163.com

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Isospin Effect on Relative State Population Temperature in the Reactions 40Ar+ 112,124Sn at 30MeV/u

Corresponding author: HU Rong-Jiang,

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Isospin Effect on Relative State Population Temperature in the Reactions ⁴⁰Ar+ ^112,124Sn at 30MeV/u

Isospin Effect on Relative State Population Temperature in the Reactions ⁴⁰Ar+ ^112,124Sn at 30MeV/u