Chinese Physics C > 2001, Vol. 25 > Issue(2): 115-120

Energy Correlations between Fragments and Light Charged Particles in Reaction of 25MeV/u⁴⁰Ar+¹¹⁵In

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

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Abstract：
The correlations between the emitted fragments at θ _lab=15°and the light charged particles(LCPs) at the close geometry configuration in the reaction of 25MeV/u ⁴⁰Ar+ ¹¹⁵In were measured. The energy correlations between fragments (4≤Zf≤14) and the LCPs including proton, deuterium, tritium and a particle as well as the energy spectra of the LCPs were obtained. The result shows the existence of sequential decay mechanism. It is found that the peak position of angular correlation is at the small angles and the most probable correlation angle is at 2°or so; The peak positions of the two components in the energy spectra of LCPs increase gradually with the mass of correlated partner; The lighter primaly products are more easier to be excited and decay to IMFs and the LCPs. In the Sequential decay, the yield of the LCPs with more heavier mass is higher than that of the lighter LCPs. The result reveals that the total correlation yield ratios summed over the fragments of Z _f=4—14 are 1: 1. 3: 1. 78: 7. 57 for proton, deuterium, tritium and a particles, respectively.

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WANG Jin-Chuan, ZHAN Wen-Long, GUO Zhong-Yan, XI Hong-Fei, ZHOU Jian-Qun and ZHAO You-Xiong. Energy Correlations between Fragments and Light Charged Particles in Reaction of 25MeV/u ⁴⁰Ar+ ¹¹⁵In[J]. Chinese Physics C, 2001, 25(2): 115-120.

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Received: 1999-12-16
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通讯作者:陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Energy Correlations between Fragments and Light Charged Particles in Reaction of 25MeV/u⁴⁰Ar+¹¹⁵In

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