Reaction Time in the 19F+93Nb Dissipative Collision

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TIAN Wen-Dong, WANG Qi, LI Song-Lin, DONG Yu-Chuan, GUO Zhong-Yan, ZHAN Wen-Long, XIAO Guo-Qing, LI Zhi-Chang, LU Xiu-Qin, ZHAO Kui, FU Chang-Bo, LIU Jian-Cheng, Reaction Time in the 19F+93Nb Dissipative Collision[J]. Chinese Physics C, 2002, 26(3): 239-244.
TIAN Wen-Dong, WANG Qi, LI Song-Lin, DONG Yu-Chuan, GUO Zhong-Yan, ZHAN Wen-Long, XIAO Guo-Qing, LI Zhi-Chang, LU Xiu-Qin, ZHAO Kui, FU Chang-Bo, LIU Jian-Cheng, Reaction Time in the 19F+93Nb Dissipative Collision[J]. Chinese Physics C, 2002, 26(3): 239-244. shu
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Received: 2001-04-02
Revised: 1900-01-01
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Reaction Time in the 19F+93Nb Dissipative Collision

    Corresponding author: TIAN Wen-Dong,
  • Institute of Modern Physics, The Chinese Academy of Sciences, Lanzhou 730000, China2 China Institute of Atomic Energy, Beijing 102413, China

Abstract: The Angular distribution and excitation function of the disspative products have been measured in the reaction 19F+93Nb. The reaction time of the dissipative products is extracted from the angular distribution and compared with that extracted from their energy auto-correlation function. A great difference exists between the reaction times extracted from these two methods. The results obtained from analyzing these two methods in different symmetrical reaction systems show that the reaction time extracted in the more symmetrical system by analyzing the slope of the angular distribution demonstrates the characteristic times of both direct and dissipative products, while the reaction times extracted in the more asymmetrical system only reflects the character of the direct products. But the method of the energy auto-correlation function can give the characteristic time for dissipative products in both symmetrical and asymmetrical system. In addition, the damping rotation feature of the dinuclear system formed in the dissipative reaction can be described by analyzing the energy auto-correlation function.

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