Chinese Physics C > 1995, Vol. 19 > Issue(S1): 13-20

Test of Sequential Decay of Hot Nuclei Around 3 MeV/u Excitation Energy

Institute of Modem Physics, The Chinese Academy of Sciences, Lanzhou, China

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The splitting of hot nuclei into three massive fragments is analyzed by using a minimization procedure of difference between relative velocity and Coulomb repulsive velocity. It is utilized in ⁴⁰Ar+ ²⁰⁹Bi, ¹⁹⁷Au, ^l59Tb reactions at 25 MeV/u. The kinematics of ternary fragments emitted from excited nuclei with 3 MeV/u excitation energy produced by central collisions are presented. It is shown that the ternary fragments originate from two successive independent binary splitting. This result is also supported by the fact that experimental angular distributions of ternary fragments are nicely reproduced by sequential decays.

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[15]	Liu Guoxing,Chen Keliang,Yu Xian,Dai Guangxi. Fission Angular Distributions for the Incomplete Fusion Reactions. Chinese Physics C, 1997, 21(S3): 35-42.
[16]	Shuanquan Luo,Cheng-Shing Wang. Thomas-Fermi Statistical Model Theory for the Surface Energy of Hot Nuclei. Chinese Physics C, 1995, 19(S2): 199-205.
[17]	Wu Heyu,Dai Guangxi. Ternary Fission with Cascade Fission Model. Chinese Physics C, 1994, 18(8): 730-735.
[18]	DAI Guang-Xi. The Shape and Potential of Hot Nuclei in Symmetry Ternary Fission. Chinese Physics C, 1992, 16(7): 651-657.
[19]	Dai Guangxi. The Shape and Potential of Hot Nuclei in Symmetric Ternary Fission. Chinese Physics C, 1992, 16(S3): 305-311.
[20]	Liu Guoxing,Chen Keliang,Wang Sufang,Cai Wei. Angular Distributions of Fission-fragments in Interactions of¹²C Ions with Various Targets. Chinese Physics C, 1988, 12(S2): 209-218.

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Wu Heyu and Dai Guangxi. Test of Sequential Decay of Hot Nuclei Around 3 MeV/u Excitation Energy[J]. Chinese Physics C, 1995, 19(S1): 13-20.

Wu Heyu and Dai Guangxi. Test of Sequential Decay of Hot Nuclei Around 3 MeV/u Excitation Energy[J]. Chinese Physics C, 1995, 19(S1): 13-20. shu

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Received: 1994-02-03

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沈阳化工大学材料科学与工程学院沈阳 110142

Test of Sequential Decay of Hot Nuclei Around 3 MeV/u Excitation Energy

Wu Heyu
Dai Guangxi

Institute of Modem Physics, The Chinese Academy of Sciences, Lanzhou, China

Received Date:1994-02-03

Abstract:The splitting of hot nuclei into three massive fragments is analyzed by using a minimization procedure of difference between relative velocity and Coulomb repulsive velocity. It is utilized in⁴⁰Ar+²⁰⁹Bi,¹⁹⁷Au,^l59Tb reactions at 25 MeV/u. The kinematics of ternary fragments emitted from excited nuclei with 3 MeV/u excitation energy produced by central collisions are presented. It is shown that the ternary fragments originate from two successive independent binary splitting. This result is also supported by the fact that experimental angular distributions of ternary fragments are nicely reproduced by sequential decays.