Bulletin of the American Physical Society
APS March Meeting 2021
Volume 66, Number 1
Monday–Friday, March 15–19, 2021; Virtual; Time Zone: Central Daylight Time, USA
Session C28: Fundamental processes in AMO
3:00 PM–4:36 PM,
Monday, March 15, 2021
Sponsoring
Unit:
DAMOP
Chair: Eduardo Ibarra Garcia Padilla, Rice Univ
Abstract: C28.00007 : Suppression of Penning ionization by orbital angular momentum conservation*
4:12 PM–4:24 PM
Live
Presenter:
Tobias Sixt
(Univ Freiburg)
Authors:
Tobias Sixt
(Univ Freiburg)
Jiwen Guan
(Univ Freiburg)
Jonas Grzesiak
(Univ Freiburg)
Markus Debatin
(Univ Freiburg)
Frank Stienkemeier
(Univ Freiburg)
Katrin Dulitz
(Univ Freiburg)
In this contribution, we report on the efficient suppression of He*-Li Penning ionization by laser excitation of the Li atoms. The results illustrate that not only the electron spin, but also Λ - the projection of the total molecular orbital angular momentum along the internuclear axis - is conserved during the ionization process. Our findings suggest that Λ conservation can be used as a more general means of reaction control, for example, to improve schemes for the simultaneous laser cooling and trapping of He* and alkali atoms.
*This work is funded by the German Research Foundation (Project No. DU1804/1-1), the Chemical Industry Fund and the University
of Freiburg.
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