Chinese Physics C > 2003, Vol. 27 > Issue(2): 118-123

Excitation Energy and Temperature of Compound Nuclei in the Reaction of 35MeV/u⁴⁰Ar+¹⁹⁷Au

Institute of Modern Physics,The Chinese Academy of Science,Lanzhou 730000,China

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Abstract：
The fission fragments in the reaction of ⁴⁰Ar+ ¹⁹⁷Au have been measured coincidently with light charged particles at 35MeV/u by using large area position sensitive detectors and Si-detectors. The velocities of the fissioning compounds are deduced based on the fragments and the excitation energies of the compounds calculated with a hypothesis of massive transfer and taking into account the influence of pre-equilibrium emission of light particles. As the same time,the temperatures of the compounds are extracted by using the energy spectra of the backward light charged particles measured coincidently with fission fragments. The temperature-excitation energy curve does not present the behaviour predicted by the theories.

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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 and GOU Quan-Bu. Excitation Energy and Temperature of Compound Nuclei in the Reaction of 35MeV/u ⁴⁰Ar+ ¹⁹⁷Au[J]. Chinese Physics C, 2003, 27(2): 118-123.

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Received: 2002-03-11
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Excitation Energy and Temperature of Compound Nuclei in the Reaction of 35MeV/u⁴⁰Ar+¹⁹⁷Au

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