Lifetimes of Rydberg states in zero-electron-kinetic-energy experiments. II. Electric field induced and collisional enhancement of Xe autoionization lifetimes

Journal Article · Thu Jun 08 00:00:00 EDT 1995 · Journal of Chemical Physics

DOI:https://doi.org/10.1063/1.468936· OSTI ID:46423

Vrakking, M J.J.; Lee, Y T ^[1]

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1. Chemical Sciences Division, Lawrence Berkeley Laboratory and Department of Chemistry, University of California at Berkeley, Berkeley, California 94720 (United States)

Lifetime measurements are reported for high principal quantum number ({ital n}=43--87) autoionizing Rydberg states of the Xe atom, prepared using state-selective excitation with a narrow bandwidth laser. It is demonstrated that the lifetimes can be increased by {ital l}-mixing in dc electric fields, as well as by {ital l},{ital m}-mixing through the presence of surrounding Xe{sup +} ions. The influence of {ital l},{ital m}-mixing interactions on the peak intensities in zero-electron-kinetic-energy (ZEKE) photoelectron spectroscopy experiments is discussed, and a possible method for increasing the applicability of ZEKE experiments is suggested. In addition, experimental evidence is given for spin--orbit state changing Xe*({ital n})--Xe collisions.

• Research Organization: Lawrence Berkeley National Laboratory
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 46423
• Journal Information: Journal of Chemical Physics, Journal Name: Journal of Chemical Physics Journal Issue: 22 Vol. 102; ISSN JCPSA6; ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
AUTOIONIZATION
ELECTRIC FIELDS
EXCITATION
KINETIC ENERGY
LASERS
LIFETIME
MIXING
PHOTOELECTRON SPECTROSCOPY
QUANTUM NUMBERS
RYDBERG STATES
XENON