Freeze-Out Density of the 35MeV/u <SUP>40</SUP>Ar+<SUP>197</SUP>Au Reaction

WEI Zhi-Yong; DUAN Li-Min; JIN Gen-Ming; WU He-Yu; LI Zu-Yu; SHEN Wen-Qing; XI Hong-Fei; ZHU Yong-Tai; ZHANG Bao-Guo; WANG Hong-Wei; XIAO Zhi-Gang; LIU Yong-Ying

Chinese Physics C> 2001, Vol. 25> Issue(9) : 839-844

Freeze-Out Density of the 35MeV/u ⁴⁰Ar+¹⁹⁷Au Reaction

Institute of Modern Physics, The Chinese Academy of Sciences, Lanzhou 730000, China2 Institute of Nuclear Research, The Chinese Academy of Sciences, Shanghai, 201800, China

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Light charged particles emitted from the reactions of 35MeV/u ⁴⁰Ar+¹⁹⁷Au have been measured. The slope nuclear temperature parameters and the isotope nuclear temperature parameters are extracted from the slope of energy spectra and double isotope yield ratios respectively, and on average, the slope temperatures are slightly larger than the isotope temperatures. The entropy values are extracted also with several methods by using the d/p ratios, d-like/p-like ratios, reduced yields of isotope d and the reduced multiplicities of charged particles M_red, respectively. The entropy values from the reduced yield of isotope d and the reduced multiplicity of charged particles M_red are nearly the same, and these two methods can be used in low beam energy heavy ion reactions. The charged particles emitted in rear angles are mainly from an equilibrium state source with temperature about (4.7±1.2) MeV and entropy S/A=2.5±0.5, from which the Freeze-out density can be deduced. It is nearly but less than 0.1 ρ₀.

References

[1]

. Jaqaman H et al.Phy.Rev.,1983,C27:2782 2. Gross D H E .Rep.Prog.Phys.,1990,53:605 3. Bondorf J P ,Botvina A S ,Iljinov A S et al.Phys.Rep.,1995,257:133 4. Moretto L G ,Wozniak G J.Ann.Rev.Nucl Part.Sci.,1993,43:3795. Schwarz C et al.GSI Reprort,1998,99–1:43 6. Schwarz C et al.GSI Reprort,2000,40 7. Fritz S ,Schwarz C ,Bassini R et al.Phys.Lett.,1999,B461:3158. Reisdorf W ,Ritter H G .Ann.Rev.Nucl. Part.Sci.,1997,47:663 9. Hauger J A et al.Phys.ReV .,1998,C57:764 10. Begemann–Blaich M et al.Phy.Rev.,1998,C58:163911. Avdeyev S P et al.Eur.Phys.J.,1998,A3:75 12. Pochodzalla J et al.Phys.Rev.,1987,C35:169513. XI Hong–Fei,ZHAN Wen–Long,ZHU Yong–Tai et al.Nucl.Phys.,1993,A552:281 14. JIN Gen–Min.Nuclear Physics Review,1998,15(4):227(in Chinese)(靳根明.原子核物理评论,1998,15(4):227) 15. Wang G et al.Phys.Rev.,1998,C57:R2786;Pratt S,Tsang M B .Phys.Rev.,1987,C36:239016. WEI Zhi–Yong,ZHU Yong–Tai.Progress in Physics,1998,18:33;Chinese Physics Letters,1997,14(3):169;High Energy Phys.and Nucl.Phys.,1997,21(3):57 17. WEI Zhi–Yong,LI Zu–Yu,DUAN Li–Min et al.High Energy Phys.and Nucl.Phys.,2000,24(12):1131(in Chinese)(魏志勇,李祖玉,段利敏等.高能物理与核物理,2000,24(12):1131)18. WEI Zhi–Yong,LI Zu–Yu,DUAN Li–Min et al.Nuclear Technology,2001,in press(魏志勇,李祖玉,段利敏等.核技术,2001,待发表)19. Siemens P J,Kapusta J I.Phys.Rev.Lett.,1979,43:148620. Bertsch G ,Cunnon J.Phys.Rev.,1981,C24:2514;Bertsch G .Nucl.Phys.,1983,A400:221;Csernai L P,Kapusta J I. Phys.Rep.,1986,131:223 21. XI Hong–Fei,ZHU Yong–Tai,SHEN Wen–Qing et al.Nucl.Sci.Tech.,1997,8:136—138 22. Hahn D,St¨ocher H .Nucl.Phys.,1988,A476:718—772 23. Kuhn C ,Konopka J,.Coffin J P et al.Phys.Rev.,1993,C48:1232—124524. Jacak B V ,Westfall G D ,Gelbke C K et al.Phys.Rev.Lett.,1983,20:1846—1849 25. Doss K G R ,Gustafsson H A ,Guibrod H H et al.Phy.Rev.,1988,C37:163 26. Speer J,Kohlmeyer B,P¨oppl H et al.GSI Report,1993,1:33

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[7]	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.
[8]	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.
[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 the ⁴⁰Ar+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 of ⁴⁰Ar+^natAg,²⁰⁹Bi at MeV/u. Chinese Physics C, 1997, 21(8): 680-685.
[11]	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 from ⁴⁰Ar+¹⁹⁷Au Collisions in Intermediate Energies. Chinese Physics C, 1996, 20(S1): 3-7.
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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 from ⁴⁰Ar+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 from ⁴⁰Ar+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 MeV ⁴⁰)Ar+¹⁹⁷ Au 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/u ⁴⁰Ar+¹⁹⁷Au. Chinese Physics C, 1995, 19(S3): 215-220.
[17]	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.
[18]	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 of ⁴⁰Ar＋¹⁹⁷Au at 25MeV/u. Chinese Physics C, 1995, 19(7): 591-597.
[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 of ⁴⁰Ar+¹⁵⁹Tb,¹⁹⁷Au,²⁰⁹Bi at 25MeV/u. Chinese Physics C, 1994, 18(S1): 20-27.
[20]	ZHOU Qing-Yi , WANG Shu-Hong , PAN Hui-Bao , LUO Zi-Hua , XIAO Lan-Rong , ZHANG Ying-Xiang . DESIGN CONSTRUCTION AND BEAM TEST OF THE BEIJING 35MeV PROTON LINGAR ACCELERATOR. Chinese Physics C, 1987, 11(1): 85-91.

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WEI Zhi-Yong, DUAN Li-Min, JIN Gen-Ming, WU He-Yu, LI Zu-Yu, SHEN Wen-Qing, XI Hong-Fei, ZHU Yong-Tai, ZHANG Bao-Guo, WANG Hong-Wei, XIAO Zhi-Gang, LIU Yong-Ying, Freeze-Out Density of the 35MeV/u ⁴⁰Ar+¹⁹⁷Au Reaction[J]. Chinese Physics C, 2001, 25(9): 839-844.

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Received: 2000-09-25
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沈阳化工大学材料科学与工程学院沈阳 110142

Freeze-Out Density of the 35MeV/u ⁴⁰Ar+¹⁹⁷Au Reaction

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Freeze-Out Density of the 35MeV/u ⁴⁰Ar+¹⁹⁷Au Reaction

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Freeze-Out Density of the 35MeV/u 40Ar+197Au Reaction

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Freeze-Out Density of the 35MeV/u 40Ar+197Au Reaction

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Freeze-Out Density of the 35MeV/u ⁴⁰Ar+¹⁹⁷Au Reaction

Freeze-Out Density of the 35MeV/u ⁴⁰Ar+¹⁹⁷Au Reaction