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首页> 外文期刊>Nuclear Instruments & Methods in Physics Research. B, Beam Interactions with Materials and Atoms >Pressure effects on the stopping and range of heavy ions
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Pressure effects on the stopping and range of heavy ions

机译：压力对重离子的终止和作用范围的影响

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摘要

Pressure effects on the energy loss of heavy ions in compound target materials are analyzed through the cores and bonds (CAB) implementation of the kinetic theory of stopping for protons and the effective charge approximation. The effect of pressure on the target material is estimated through a model of molecular confinement whereby the changes in the molecular electronic properties are calculated selfconsistently. As pressure increases, a competing behavior between target density increase and reduction in the electronic stopping cross section is observed. As a consequence, total path ranges are decreased as compared with the corresponding pressure-free target. Range calculations are shown for He~+ (E ≤ 1.6 MeV) and Li~+ (E≤ 2.6 MeV) projectiles on dense water and methane targets.
机译：通过质子停止动力学理论的核心和键（CAB）实施以及有效电荷近似，分析了复合靶材料中压力对重离子能量损失的影响。通过分子约束模型估算压力对目标材料的影响，从而可以自洽地计算分子电子性质的变化。随着压力增加，观察到目标密度增加与电子停止横截面减小之间的竞争行为。结果，与相应的无压力目标相比，总的路径范围减小了。显示了在密集的水和甲烷目标上的He〜+（E≤1.6 MeV）和Li〜+（E≤2.6 MeV）弹丸的射程计算。

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