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Spin-state-controlled chemi-ionization reactions between metastable helium atoms and ground-state lithium atoms.
- Source :
-
Journal of Chemical Physics . 3/21/2022, Vol. 156 Issue 11, p1-8. 8p. - Publication Year :
- 2022
-
Abstract
- We demonstrate the control of 4He(23S1)–7Li(22S1/2) chemi-ionization reactions by all-optical electron-spin-state preparation of both atomic species prior to the collision process. Our results demonstrate that chemi-ionization is strongly suppressed (enhanced) for non-spin-conserving (spin-conserving) collisions at thermal energies. These findings are in good agreement with a model based on spin angular momentum coupling of the prepared atomic states to the quasi-molecular states. Small deviations from the model indicate the contribution of the 4Σ+ channel to the reaction rate, which is in violation of spin conservation. [ABSTRACT FROM AUTHOR]
- Subjects :
- *HELIUM atom
*ANGULAR momentum (Mechanics)
*ATOMS
Subjects
Details
- Language :
- English
- ISSN :
- 00219606
- Volume :
- 156
- Issue :
- 11
- Database :
- Academic Search Index
- Journal :
- Journal of Chemical Physics
- Publication Type :
- Academic Journal
- Accession number :
- 155884236
- Full Text :
- https://doi.org/10.1063/5.0083842