Projectile energy loss in multiply ionizing ion-atom collisions.
Projectile energy loss in multiply ionizing ion-atom collisions.
复制标题
多重电离离子原子碰撞中的射弹能量损失。
DOI：
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发表时间：
1995
期刊：
影响因子：
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通讯作者：
Vane
中科院分区：
文献类型：
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作者：
Schoene;Schuch;Datz;Schulz;Dittner;Giese;Kessel;Krause;Miller;Vane
测量了与 He、Ne、Ar 和 Kr 单次碰撞的 7.5--25-MeV C[sup 6+,5+] 和 F[sup 6+] 离子的射弹能量损失，作为反冲离子电荷状态和射弹散射的函数。测量了射弹捕获电子的碰撞和仅涉及直接电离的碰撞的能量损失。我们研究并发现了向连续电子的平均能量转移（100--250 eV/电子）。对于捕获和直接电离，观察到散射角随着反冲离子电荷状态的强烈增加。结果表明，对于较小的冲击参数，会产生较高的反冲离子电荷态，并获得较高的能量损失。我们观察到能量损失的弱目标-[ital Z]依赖性。结果与 Olson 的 [ital n]-体经典轨迹蒙特卡罗计算、Schuch [ital et] [ital al] 的半经典近似计算进行了比较。 [核。仪器。方法物理。资源。教派。 B 42, 566 (1989)]，以及能量沉积模型。
The projectile energy loss for 7.5--25-MeV C[sup 6+,5+] and F[sup 6+] ions was measured for single collisions with He, Ne, Ar, and Kr as a function of the recoil-ion charge state and the projectile scattering. This energy loss was measured for collisions in which the projectile captured an electron and for those involving just direct ionization. We investigated and found a large average energy transfer (100--250 eV/electron) to the continuum electrons. A strong increase of the scattering angle with recoil-ion charge state was observed for both capture and direct ionization. The results imply that, for smaller impact parameters, higher recoil-ion charge states are produced and that higher energy losses are obtained. We observed a weak target-[ital Z] dependence of the energy loss. The results are compared with [ital n]-body classical-trajectory Monte Carlo calculations by Olson, semiclassical-approximation calculations by Schuch [ital et] [ital al]. [Nucl. Instrum. Methods Phys. Res. Sect. B 42, 566 (1989)], and the energy-deposition model.