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法国国家大加速器(GANIL)的4π-INDRA探测器使人们能够了解在35-95MeV/u的能区的近对称的轻和中重核反应中,融合反应(或形成一个主要的单源)的截面是很小的.而是在所有的碰撞参数,反应机制主要是耗散的二体碰撞并伴随中快度粒子的发射.我们决定了再构后的准弹核的激发能,它们可以达到24MeV/u.准弹核的显示温度可以通过几组同位素比和动能谱的斜率得到.不同的“量温器”给出了不同的温度,但它们均随激发能的升高而稳定增加.实验数据可以通过假定核的初始温度随激发能的稳定上升来解释,但并不存在核的一级液气相变的证据.
The GNAIL 4π-INDRA detector enables one to understand the cross-section of the fusion reaction (or the formation of a single single source) in near-symmetrical light and moderate-heavy nuclear reactions in the energy region of 35-95 MeV / u It is small. But at all collision parameters, the reaction mechanism is mainly the dissipative two-body collision accompanied by the emission of fast particles. We determine the reconstructed quasi-projectile nuclear excitation energy, which can reach 24 MeV / u. The temperature of the quasi-projectile core can be obtained from the slopes of several sets of isotope ratios and kinetic energy spectra. Different “calorimeters” give different temperatures, but they both increase steadily with increasing excitation energy. The experimental data can be explained by assuming that the initial temperature of the nucleus increases steadily with the excitation energy, but there is no evidence of the first-stage liquid-gas phase transition of the nucleus.