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利用半导体望远镜探测器和PPAC对25MeV/u40Ar+93Nb反应中的带电粒子和余核进行了关联测量,对所得α粒子能谱用三源模型进行了拟合,并由余核飞行时间和粒子多重性得到热核激发能.通过对温度的修正,发现在本实验中有激发能E*/A为4.3MeV,温度Tinit为6.9MeV的热核形成。通过与其它实验结果的对比可以看出核物质在轻系统和重系统中行为的差异。
The semiconductor telescope detector and PPAC were used to correlate the charged particle and the residual nucleus in the 25MeV / u40Ar + 93Nb reaction. The energy spectrum of the obtained α particle was fitted with a three-source model and obtained from the flight time and particle multiplicity Thermonuclear excitation energy. Through the correction of temperature, we found that in this experiment, there is a thermonuclear formation with excitation energy E * / A of 4.3MeV and temperature Tinit of 6.9MeV. By comparing with other experimental results, we can see the difference of behavior of nuclear matter in light system and heavy system.