State-resolved fine-structure transitions in collisions of Ca 4s4p3PJ0with H2and D2molecules
- 14 November 1984
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic and Molecular Physics
- Vol. 17 (21) , 4351-4357
- https://doi.org/10.1088/0022-3700/17/21/024
Abstract
An optical pumping state-selection technique is employed for the measurement of intramultiplet mixing cross sections involving specified spin-orbit states of calcium 4s4p 3PJ0 atoms in collisions with H2 and D2. As was previously found for helium collisions, the J=2 to J'=1 cross sections are found to be the largest of the three possible downward transitions. However, differences in magnitude between the various J to J' cross sections are smaller than for helium. Moreover, the cross sections for the molecular targets are two to three times larger than for the same transitions with helium as the scattering partner. These differences are discussed in terms of the expected dynamics of fine-structure-changing transitions of 3P atoms with atomic and molecular scattering partners.Keywords
This publication has 42 references indexed in Scilit:
- Influence of the rotational energy of the molecular perturber on the Rb(5P)–H2,D2 fine structure changing collisionsThe Journal of Chemical Physics, 1983
- Theoretical study of intramultiplet transitions in collisions of atoms inelectronic states with structureless targets:+HePhysical Review A, 1983
- 42P fine-structure mixing in potassium by collisions with N2, H2, CO, and CH4Journal of Quantitative Spectroscopy and Radiative Transfer, 1983
- Deexcitation of Cd 53P1 atoms in collisions with ground state atoms and moleculesJournal of Quantitative Spectroscopy and Radiative Transfer, 1982
- Complexes of beryllium(2s2p 3P,1P) and magnesium(3s3p 3P,1P) with molecular hydrogen. Implications for the magnesium(1P) + molecular hydrogen .fwdarw. magnesium hydride(2.SIGMA.) + atomic hydrogen(2S) reactionThe Journal of Physical Chemistry, 1982
- Collisional intramultiplet relaxation of Cd(5s5p 3P0,1,2) by alkane hydrocarbonsThe Journal of Chemical Physics, 1982
- A Theoretical study of the reaction of Mg(3s3p 3P) with H2Chemical Physics, 1981
- Temperature dependence of the quenching of Mg(3P J) by H2: Evidence for a change from physical to chemical exit-channel controlThe Journal of Chemical Physics, 1980
- Rotational Effects in Collisionally Induced Fine-Structure TransitionsPhysical Review Letters, 1973
- Intermultiplet mixing in alkali atoms induced by collisions with diatomic moleculesChemical Physics Letters, 1969