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Action spectroscopy of SrCl<sup>+</sup> using an integrated ion trap time-of-flight mass spectrometer

Puri, P
; 
Schowalter, SJ
; 
Kotochigova, S
; 
Petrov, A
; 
Hudson, ER
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Journal Article
Date
2014-07-07
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physics.chem-ph
 physics.chem-ph
 physics.atom-ph
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http://hdl.handle.net/20.500.12613/5875
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1404.4609v1.pdf
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DOI
10.1063/1.4885363
Abstract
The photodissociation cross-section of SrCl+ is measured in the spectral range of 36000-46000 cm-1 using a modular time-of-flight mass spectrometer (TOF-MS). By irradiating a sample of trapped SrCl+ molecular ions with a pulsed dye laser, X1Σ+ state molecular ions are electronically excited to the repulsive wall of the A 1Π state, resulting in dissociation. Using the TOF-MS, the product fragments are detected and the photodissociation cross-section is determined for a broad range of photon energies. Detailed ab initio calculations of the SrCl+ molecular potentials and spectroscopic constants are also performed and are found to be in good agreement with experiment. The spectroscopic constants for SrCl+ are also compared to those of another alkaline earth halogen, BaCl+, in order to highlight structural differences between the two molecular ions. This work represents the first spectroscopy and ab initio calculations of SrCl+. © 2014 AIP Publishing LLC.
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Journal of Chemical Physics
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