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电荷转移在He⁺ - He → He(1s4l, ≥ 2) - He⁺ 在中间能量范围中的碰撞

Patryk Kamiński¹, Ryszard Drozdowski¹

¹Institute of Experimental Physics, Faculty of Mathematics, Physics and Informatics, University of Gdańsk, ul Wita Stwosza 57, 80-308 Gdańsk, Poland.

International journal of molecular sciences

|July 27, 2024

概括

研究人员研究了离子碰撞,以了解电荷转移激发. 他们发现了不对称的电荷分布和不变的双极时刻,这表明保罗陷机制是这个能量范围的关键.

科学领域:

原子和分子物理原子和分子物理
量子力学就是量子力学.
碰撞物理碰撞物理

背景情况:

在离子-原子碰撞中捕获电子对于理解原子相互作用至关重要.
离子 (He+) 碰撞为研究复杂量子现象提供了一个简化的系统.
激发状态及其演变对于解释光谱数据至关重要.

研究的目的:

测量在He+He碰撞中电子捕获后发出的线的反交叉光谱.
从理论上计算强度函数,考虑兴奋状态的时间演变.
通过配合理论和实验数据来确定电荷转移的He原子的碰撞后状态.

主要方法:

对线 (λ1s4l D3,F-1s2p P3=447.2 nm) 的反交叉光谱的测量.
理论强度函数的计算,包括兴奋状态的时间演变.
在碰撞体积内分析电场和密度分布.
将理论强度与实验数据相匹配,以确定原子状态.

主要成果:

测量了10-29 keV之间的投射能量的反交叉光谱.
计算了理论强度函数,并将其与实验数据相匹配.
在中间射弹能量范围内观察到不对称的电子电荷分布.
目标原子的电双极时刻保持不变,类似于直接激发.

结论:

保罗陷机制可能在研究的能量范围内的电荷转移激发中发挥着重要作用.
观察到的不对称的电荷分布没有二极极矩变化提供了对碰撞动态的见解.
这项研究有助于更深入地了解离子-原子相互作用中的量子效应.

关键词:

斯塔克效应是一个巨大的影响.抗交叉光谱学抗交叉光谱学密度矩阵是一个密度矩阵.离子原子碰撞碰撞

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