Energy loss of tens keV charged particles traveling in the hot dense carbon plasma
Energy loss of tens keV charged particles traveling in the hot dense carbon plasma
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DOI：
10.1007/s11433-016-0067-2
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发表时间：
2016-06
期刊：
影响因子：
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通讯作者：
Z. Fu;Zhigang Wang;B. He;Dafang Li;Ping Zhang
中科院分区：
文献类型：
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作者：
Z. Fu;Zhigang Wang;B. He;Dafang Li;Ping Zhang
用量纲延拓方法系统地定量研究了初始能量为10keV的电子、质子和α粒子在密度为2.281~22.81g/cm~3、温度为400~1500 eV的热密碳(C)等离子体中的能量损失。不同带电粒子的行为很容易相互区分。首先，由于离子的质量是电子的几千倍，电子的穿透距离比质子和α粒子在等离子体中的穿透距离要远得多。而对于质子和α粒子，大约一半以上的能量转移到C等离子体的离子物种中。拟合了一个简单的侵彻距离随等离子体密度的递减规律，从拟合的数据中可以清楚地发现每个弹丸粒子的不同行为。我们相信，随着目前实验技术的进步，在不久的将来，这些发现可能会在离子阻止实验中得到证实。
The energy loss of charged particles, including electrons, protons, andα-particles with tens keV initial energyE0, traveling in the hot dense carbon (C) plasma for densities from 2.281 to 22.81 g/cm3and temperatures from 400 to 1500 eV is systematically and quantitatively studied by using the dimensional continuation method. The behaviors of different charged particles are readily distinguishable from each other. Firstly, because an ion is thousands times heavier than an electron, the penetration distance of the electron is much longer than that of proton andα-particle traveling in the plasma. Secondly, most energy of electron projectile withE0< 100 keV deposits into the electron species of C plasma, while for the cases of proton andα-particle withE0< 100 keV, about more than half energy transfers into the ion species of C plasma. A simple decreasing law of the penetration distance as a function of the plasma density is fitted, and different behaviors of each projectile particle can be clearly found from the fitted data. We believe that with the advanced progress of the present experimental technology, the findings shown here could be confirmed in ion-stopping experiments in the near future.