Action spectroscopy of SrCl+ using an integrated ion trap time-of-flight mass spectrometer
Abstract
The photodissociation cross-section of SrCl+ is measured in the spectral range of 36 000–46 000 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 A1Π 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+.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jul 07, 2014
- Source ID
- 10.1063/1.4885363
Entities
People
- Alexander Petrov
- Eric R Hudson
- Prateek Puri
- Steven J. Schowalter
- Svetlana Kotochigova
Organizations
- Army Research Office
- National Science Foundation
- Temple University
- University of California