Photodissociation spectroscopy of the dysprosium monochloride molecular ion
- Department of Physics and Astronomy, University of California, Los Angeles, California 90095 (United States)
- Department of Physics, Temple University, Philadelphia, Pennsylvania 19122 (United States)
We have performed a combined experimental and theoretical study of the photodissociation cross section of the molecular ion DyCl{sup +}. The photodissociation cross section for the photon energy range 35 500 cm{sup −1} to 47 500 cm{sup −1} is measured using an integrated ion trap and time-of-flight mass spectrometer; we observe a broad, asymmetric profile that is peaked near 43 000 cm{sup −1}. The theoretical cross section is determined from electronic potentials and transition dipole moments calculated using the relativistic configuration-interaction valence-bond and coupled-cluster methods. The electronic structure of DyCl{sup +} is extremely complex due to the presence of multiple open electronic shells, including the 4f{sup 10} configuration. The molecule has nine attractive potentials with ionically bonded electrons and 99 repulsive potentials dissociating to a ground state Dy{sup +} ion and Cl atom. We explain the lack of symmetry in the cross section as due to multiple contributions from one-electron-dominated transitions between the vibrational ground state and several resolved repulsive excited states.
- OSTI ID:
- 22489643
- Journal Information:
- Journal of Chemical Physics, Journal Name: Journal of Chemical Physics Journal Issue: 12 Vol. 143; ISSN JCPSA6; ISSN 0021-9606
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CONFIGURATION INTERACTION
CROSS SECTIONS
DIPOLE MOMENTS
DISSOCIATION
DYSPROSIUM
ELECTRONIC STRUCTURE
ELECTRONS
EXCITED STATES
GROUND STATES
MOLECULAR IONS
MOLECULES
PEAKS
PHOTOLYSIS
RELATIVISTIC RANGE
SPECTROSCOPY
TIME-OF-FLIGHT MASS SPECTROMETERS