收稿日期: 2002-06-13
修回日期: 2002-08-05
网络出版日期: 2003-05-10
基金资助
国家自然科学基金(10175083,19775057)资助;国家重点基础研究发展规划项目(G2000077401)资助
Fluctuation in the Dissipative Heavy Ion Collisions of FNb
Received date: 2002-06-13
Revised date: 2002-08-05
Online published: 2003-05-10
董玉川 , 王琦 , 田文栋 , 李松林 , 江中和 , 李志常 , 路秀琴 , 赵葵 , 符长波 , 刘建成 , 姜华 , 胡桂青 . 重离子耗散反应激发函数中的截面涨落[J]. 中国科学院大学学报, 2003 , 20(3) : 306 -308 . DOI: 10.7523/j.issn.2095-6134.2003.3.007
Two independent measurements of excitation functions in dissipative collisions of 19 F +93Nb have been carried out at incident energies from 100MeV to 108MeV in steps of 250 keV.The experimental conditions were kept to be identical in both measurements.The data indicate non-reproducibility of the non-self-averaging oscillating cross sections.The quasi-periodic structure in the energy autocorrelation functions is described by means of the concept of parity and spin decoherence in the intermediate dinuclear system.The non-reproducibility of the cross sections is interpreted by the extreme sensitivity of initial condition in the quantum chaotic motion.
Key words： fluctuation; non-self-averaging; non-reproducibility; decoherence; quantum chaos
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