Ion formation by impact of fast dust particles and comparison with related techniques
Ion formation by impact of fast dust particles and comparison with related techniques
复制标题
快速尘埃粒子撞击形成离子以及与相关技术的比较
DOI：
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发表时间：
1987
期刊：
影响因子：
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通讯作者：
F. R. Krueger
中科院分区：
文献类型：
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作者：
J. Kissel;F. R. Krueger
通过粒子撞击或脉冲激光照射在固体表面上的能量的快速耗散引起类似的电离效应。离子形成的激发函数进行了研究和比较不同的激发半径和能量耗散通量。其目的是试图定量地了解彗星尘埃颗粒撞击金属目标后离子的形成，用于空间飞行任务的各种现场调查。在这些任务期间发生的高冲击速度在实验室中无法实现。因此，也使用了其他相关技术的结果，例如：纳秒巨激光脉冲，二次离子质谱，重离子诱导解吸。结果必须解释的主要相互作用及其随后的演变所造成的固体的基本激发的属性。一个远离平衡的相变描述解吸现象，作为准平衡状态方程模型已被证明是不能够描述在这个政权的质谱。讨论了离子形成的半经验半定量模拟和比较规则，给出了各种离子形成模型有效性的限制条件。
Fast dissipation of energy on solid surfaces either by particle impact or by pulsed laser irradiation causes similar ionization effects. The excitation functions for ion formation are studied and compared for various excitation radii and energy dissipation fluxes. The goal is to try to understand quantitatively the formation of ions upon impact of cometary dust particles on metal targets, as being used for various in situ investigations on space flight missions. The high impact speeds occurring during these missions cannot be achieved in the laboratory. Therefore also the results of other related techniques are used such as: nanosecond giant laser pulses, secondary ion mass spectrometry, heavy ion induced desorption. The results must be interpreted in terms of the properties of elementary excitation of the solid caused by the primary interactions and their subsequent evolution. A far-from-equilibrium phase transition description is adopted for desorption phenomena, as the quasiequilibrium equation-of-state models had been shown not to be able to describe the mass spectra in this regime. Semiempirical and semi-quantitative simulation and comparison rules for ion formation are discussed and the limiting conditions of validity of the various ion formation models are given.