增量水化对反向内部转换振动自离离子的增量水化的影响
E Michi Burrow1, Connor J Clarke1, Jan R R Verlet1,2
1Durham University, Department of Chemistry, Durham DH1 3LE, United Kingdom.
反向内部转换振动自分离 (RICVAD) 机制,其中离子发射电子,即使存在水分子也会持续存在. 化影响了RICVAD的动态,并引入了酸阳离子的新衰变路径.
科学领域:
- 物理化学 物理化学
- 化学物理 化学物理
- 分子动力学分子动力学
背景情况:
- 反向内部转换振动自分离 (RICVAD) 的机制涉及热基态离子的电子发射.
- 这一过程通常由隔离离子中双极结合状态的统计群体介导.
研究的目的:
- 调查水分子对二基基离子 (NB−) 中的RICVAD机制的影响.
- 了解水合如何影响电子发射动态和潜在的新衰变通道.
主要方法:
- 阳离子光电子成像被用来研究含有多达两种水分子 (NB-H2O) 1和NB-H2O) 2的基离子集群.
- 光刺激能量的变化是为了探测不同的电子状态和衰变途径.
主要成果:
- 观察到RICVAD在NB−(H2O) 1中具有活性,这表明该机制的稳定性.
- 一个额外的衰变通道涉及集群解离和随后的RICVAD隔离的NB−被确定在更高的能量NB−(H2O) 1.1.
- 里克瓦德的信号存在,但被NB中的其他信号所掩盖 - H2O) 2.
结论:
- 在水分分子的存在下,RICVAD机制仍然是可行的.
- 化影响阳离子的共振动力学,并可能导致新的解离路径.
- 该研究强调了复杂化学环境对基本电子发射过程的影响.
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