Fission Angular Distributions for the Incomplete Fusion Reactions

Liu Guoxing; Chen Keliang; Yu Xian; Dai Guangxi

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2024年10月30日

Chinese Physics C> 1997, Vol. 21> Issue(S3) : 35-42

Fission Angular Distributions for the Incomplete Fusion Reactions

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

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Abstract：
The fragment angular distributions for 35.9, 41.0, 45.6, and 50.0 MeV/u ¹⁶O+¹⁹⁷Au, 50 MeV/u ¹⁶O+¹⁵⁹Tb, and 50 MeV/u ¹⁶O+²⁰⁹Bi reactions have been measured by the solid state nuclear track detectors. After subtraction of the contribution of intermediate mass fragment (IMF), the fission angular distributions have been fitted by the transition state statistical model (TSM) and the single-spin standard theory to extract the spins of the fissioning nuclei. The relation between spins and bombarding energies is also discussed.
- incomplete fusion fission ,
- sequential fission ,
- fission nuclei spin

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[3]	H. Eslamizadeh . Two-dimensional Langevin modeling of fission dynamics of the excited compound nuclei ¹⁸⁸Pt, ²²⁷Pa and ²⁵¹Es. Chinese Physics C, 2016, 40(2): 024103. doi: 10.1088/1674-1137/40/2/024103
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[16]	Liu Guoxin , Chen Keliang , Yu Xian , DaiGuangxi . Fission Angular Distributions for the Incomplete Fusion Reactions. Chinese Physics C, 1997, 21(9): 777-782.
[17]	Tan Jilian , Zhang Jinxia , Jin Genming , Zhang Huanqiao , Qian Xing , Liu Zuhua , Xu Jincheng . Bi-dimension Position Sensitive Detector Used in the Study of Fusion Fission of Heavy Ions at the Sub-Coulomb Barrier Energy Region. Chinese Physics C, 1997, 21(S2): 1-8.
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[19]	Dai Guangxi . The Shape and Potential of Hot Nuclei in Symmetric Ternary Fission. Chinese Physics C, 1992, 16(S3): 305-311.
[20]	Dai Guangxi , Li Weisheng . Exploration of Optimum Shape in Symmetric Fission. Chinese Physics C, 1988, 12(S4): 399-404.

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Liu Guoxing, Chen Keliang, Yu Xian and Dai Guangxi. Fission Angular Distributions for the Incomplete Fusion Reactions[J]. Chinese Physics C, 1997, 21(S3): 35-42.

Liu Guoxing, Chen Keliang, Yu Xian and Dai Guangxi. Fission Angular Distributions for the Incomplete Fusion Reactions[J]. Chinese Physics C, 1997, 21(S3): 35-42. shu

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Received: 1996-09-17

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Supported by the National Natural Science Foundation of China.

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沈阳化工大学材料科学与工程学院沈阳 110142

Fission Angular Distributions for the Incomplete Fusion Reactions

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

Received Date: 1996-09-17

Fund Project: Supported by the National Natural Science Foundation of China.

Abstract: The fragment angular distributions for 35.9, 41.0, 45.6, and 50.0 MeV/u ¹⁶O+¹⁹⁷Au, 50 MeV/u ¹⁶O+¹⁵⁹Tb, and 50 MeV/u ¹⁶O+²⁰⁹Bi reactions have been measured by the solid state nuclear track detectors. After subtraction of the contribution of intermediate mass fragment (IMF), the fission angular distributions have been fitted by the transition state statistical model (TSM) and the single-spin standard theory to extract the spins of the fissioning nuclei. The relation between spins and bombarding energies is also discussed.