Correlated formation of the excited states of recoil and scattered ions in multiple electron capture collision of Ar8+ with CO2 and OCS
Correlated formation of the excited states of recoil and scattered ions in multiple electron capture collision of Ar8+ with CO2 and OCS
复制标题
Ar8与CO2和OCS多次电子俘获碰撞中反冲离子和散射离子激发态的相关形成
DOI：
10.1088/1361-6455/aaa059
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
Shiromaru H
中科院分区：
文献类型：
--
作者：
Tezuka H;Takahashi K;Matsumoto J;Karimi R;Sanderson J H;Shiromaru H
研究了Ar - 8+弹丸与线性三原子分子靶（co2和OCS）低能碰撞引起的多重电离事件，揭示了散射离子的电子态与离子破碎过程之间的关系。所有反冲碎片的位置敏感飞行时间测量，由电荷选择的散射离子检测触发，使我们能够区分在多个电子捕获之后，弹丸发射不同数量的俄热电子的离子破碎过程。在三重捕获碰撞中，在具有高动能的碎片和仅发生单俄歇电子发射的事件之间发现了很强的相关性。
Multiple ionization events induced by low energy collisions between Ar 8+ projectiles and linear triatomic molecular targets, CO 2 and OCS, were studied in order to shed light on the correlation between the electronic states of the scattered ion and the ionic fragmentation processes. Position-sensitive time-of-flight measurements of all the recoil fragments, triggered by detection of a charge-selected scattered ion, allowed us to distinguish between ionic fragmentation processes in which different numbers of Auger electrons were emitted by the projectile, just after multiple electron capture. A strong correlation is found for triple capture collisions, between fragmentation with high kinetic energy and events when only single Auger electron emission takes place.