Inelastic-collision cross sections of liquid water for interactions of energetic protons
Inelastic-collision cross sections of liquid water for interactions of energetic protons
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DOI：
10.1016/s0969-806x(00)00263-2
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发表时间：
2000-09-01
影响因子：
2.9
通讯作者：
Paretzke, HG
中科院分区：
文献类型：
--
作者：
Dingfelder, M;Inokuti, M;Paretzke, HG
高能质子与液态水的非弹性相互作用的截面数据在0.1keV到10GeV的能量范围内被导出，例如用作径迹结构分析的输入。对于高于约500keV的质子动能，采用了一阶玻恩近似和前面确定的介电响应函数。特别是在质子能量高于几百MeV时，费米密度效应也被考虑在内。在能量低于500keV，相当于约8.9×10(-6)m的剩余范围时，截面值是通过对实验和理论信息的广泛和关键的分析而得出的，这些信息不仅涉及单个过程的截面，如电离、激发和电荷转移，而且还包括阻止功率和其他相关量。文中还给出了电离碰撞产生的二次电子的光谱。分析中还考虑了相变对截面的影响。(C)2000爱思唯尔科学有限公司。保留所有权利。
Cross-section data for inelastic interactions of energetic protons with liquid water, for use, e.g. as input in track structure analysis, are derived for an energy range from 0.1 keV to 10 GeV. At proton kinetic energies above about 500 keV, the first Born approximation and the dielectric-response function determined earlier are used. At proton energies above several hundred MeV in particular, the Fermi-density effect is also incorporated. At energies below about 500 keV, which corresponds to a residual range of about 8.9 x 10(-6) m, cross-section values are derived semiempirically by an extensive and critical analysis of experimental and theoretical information concerning not only cross sections for individual processes such as ionisation, excitation, and charge transfer but also stopping power and other relevant quantities. Spectra of secondary electrons resulting from ionising collisions are also presented. The analysis also includes considerations of phase effects on cross sections. (C) 2000 Elsevier Science Ltd. All rights reserved.