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Title: Action spectroscopy of SrCl{sup +} using an integrated ion trap time-of-flight mass spectrometer

The photodissociation cross-section of SrCl{sup +} is measured in the spectral range of 36 000–46 000 cm{sup −1} using a modular time-of-flight mass spectrometer (TOF-MS). By irradiating a sample of trapped SrCl{sup +} molecular ions with a pulsed dye laser, X{sup 1}Σ{sup +} state molecular ions are electronically excited to the repulsive wall of the A{sup 1}Π 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{sup +} molecular potentials and spectroscopic constants are also performed and are found to be in good agreement with experiment. The spectroscopic constants for SrCl{sup +} are also compared to those of another alkaline earth halogen, BaCl{sup +}, in order to highlight structural differences between the two molecular ions. This work represents the first spectroscopy and ab initio calculations of SrCl{sup +}.
Authors:
; ;  [1] ; ;  [2]
  1. Department of Physics and Astronomy, University of California, Los Angeles, California 90095 (United States)
  2. Department of Physics, Temple University, Philadelphia, Pennsylvania 19122 (United States)
Publication Date:
OSTI Identifier:
22308753
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Chemical Physics; Journal Volume: 141; Journal Issue: 1; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; CROSS SECTIONS; DISSOCIATION; DYE LASERS; HALOGENS; MOLECULAR IONS; PHOTOLYSIS; PHOTONS; PULSES; SPECTROSCOPY; TIME-OF-FLIGHT MASS SPECTROMETERS