Rotational state analysis of AIH+ by two-photon dissociation

被引：19
作者：
Seck, Christopher M. [1 ]
Hohenstein, Edward G. [2 ,3 ,4 ]
Lien, Chien-Yu [1 ]
Stollenwerk, Patrick R. [1 ]
Odom, Brian C. [1 ]
机构：
[1] Northwestern Univ, Dept Phys & Astron, Evanston, IL 60208 USA
[2] Stanford Univ, Dept Chem, Stanford, CA 94305 USA
[3] Stanford Univ, PULSE Inst, Stanford, CA 94305 USA
[4] SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA
来源：
JOURNAL OF MOLECULAR SPECTROSCOPY | 2014年 / 300卷
基金：
美国国家科学基金会;
关键词：
Multiphoton dissociation; Molecular ion; Ion trap; Aluminum monohydride; AIH(+); REMPD; CORRELATED MOLECULAR CALCULATIONS; GAUSSIAN-BASIS SETS; ALUMINUM; CC3;
D O I：
10.1016/j.jms.2014.03.023
中图分类号：
O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号：
070203 ; 070304 ; 081704 ; 1406 ;
摘要：
We perform ab initio calculations relevant to predict the cross-section of an experimentally accessible (1 + 1') resonance-enhanced multiphoton dissociation (REMPD) pathway in AIH(+). Experimenting on AIH(+) ions held in a radiofrequency trap, we confirm dissociation via this channel with analysis performed using time-of-flight mass spectrometry, demonstrate the use of REMPD for rotational state analysis, and measure the rotational distribution of trapped AIH(+) to be consistent with the expected thermal distribution. AIH+ is a particularly interesting species because its electronic level structure is compatible with proposals to perform rotational optical pumping, direct Doppler cooling, and single-molecule fluorescence detection. Potential applications of trapped AIH(+) include searches for time-varying constants, quantum information processing, and ultracold chemistry studies. (C) 2014 Elsevier Inc. All rights reserved.
引用
收藏
页码：108 / 111
页数：4
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