Inter-Rydberg excitation spectroscopy of krypton dimers

Abele, Charles Christian

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https://hdl.handle.net/2142/20892 Copy

Description

Title

Inter-Rydberg excitation spectroscopy of krypton dimers

Author(s)

Abele, Charles Christian

Issue Date

1989

Doctoral Committee Chair(s)

Eden, James G.

Department of Study

Electrical and Computer Engineering

Discipline

Electrical Engineering

Degree Granting Institution

University of Illinois at Urbana-Champaign

Degree Name

Ph.D.

Degree Level

Dissertation

Keyword(s)

Physics, Molecular

Language

eng

Abstract

An excitation spectrum of the krypton dimer 6p$\sp3\Pi\sb{\rm g}(0\sbsp{g}{-})$ $\gets$ 5s$\sp3\Sigma\sbsp{\rm u}{+}(1\sb{\rm u}$, 0$\sbsp{\rm u}{-})$ transition has been observed over 525 nm $\leq$ $\lambda$ $\leq$ 545 nm. An argon fluoride excimer laser was used to excite the atomic krypton 6p (3/2) $\sb2$ state, which produced metastable dimers via collisions with the 300 Torr krypton background. Molecular transitions originating from the metastable 5s$\sp3\Sigma\sbsp{\rm u}{+}(1\sb{\rm u}, 0\sbsp{\rm u}{-}$) were then probed with a dye laser, and the predissociation of the upper states of these transitions produced atomic fluorescence. Suppressions in the fluorescence, which were correlated with atomic transitions, demonstrate that the atomic 5p (3/2) $\sb1$ state is the primary product of the molecular 6p$\sp3\Pi\sb{\rm g}(0\sbsp{\rm g}{-}$) predissociation, and that the probable channel for this process is the 5p0$\sbsp{\rm g}{-}$ state whose atomic limit is the 5p (3/2) $\sb1$ state. In addition it is observed that Hund's case (c) is consistent with these observations.

Type of Resource

text

Permalink

http://hdl.handle.net/2142/20892

Copyright and License Information

Copyright 1989 Abele, Charles Christian

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