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Rotationally resolved photoelectron spectra in resonance enhanced multiphoton ionization of HCl via the F ^1Δ_2 Rydberg state

Wang, Kwanghsi and McKoy, V. (1991) Rotationally resolved photoelectron spectra in resonance enhanced multiphoton ionization of HCl via the F ^1Δ_2 Rydberg state. Journal of Chemical Physics, 95 (12). pp. 8718-8724. ISSN 0021-9606. https://resolver.caltech.edu/CaltechAUTHORS:20151028-114735255

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Abstract

Results of studies of rotational ion distributions in the X  ^2Π_(3/2) and X  ^2Π_(1/2) spin‐orbit states of HCl^+ resulting from (2+1’) resonance enhanced multiphoton ionization (REMPI) via the S(0) branch of the F  ^1Δ_2 Rydberg state are reported and compared with measured threshold‐field‐ionization zero‐kinetic‐energy spectra reported recently [K. S. Haber, Y. Jiang, G. Bryant, H. Lefebvre‐Brion, and E. R. Grant, Phys. Rev. A (in press)]. These results show comparable intensities for J^+ = 3/2 of the X  ^2Π_(3/2) ion and J^+ = 1/2 of the X  ^2Π_(1/2) ion. Both transitions require an angular momentum change of ΔN = −1 upon photoionization. To provide further insight into the near‐threshold dynamics of this process, we also show rotationally resolved photoelectron angular distributions, alignment of the ion rotational levels, and rotational distributions for the parity components of the ion rotational levels. About 18% population is predicted to occur in the (+) parity component, which would arise from odd partial‐wave contributions to the photoelectron matrix element. This behavior is similar to that in (2+1) REMPI via the S(2) branch of the F  ^1Δ_2 state of HBr and was shown to arise from significant l mixing in the electronic continuum due to the nonspherical molecular ion potential. Rotational ion distributions resulting from (2+1) REMPI via the S(10) branch of the F  ^1Δ_2 state are also shown.


Item Type:Article
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http://dx.doi.org/10.1063/1.461256DOIArticle
http://scitation.aip.org/content/aip/journal/jcp/95/12/10.1063/1.461256PublisherArticle
Alternate Title:Rotationally resolved photoelectron spectra in resonance enhanced multiphoton ionization of HCl via the F 1Δ2 Rydberg state
Additional Information:© 1991 American Institute of Physics. (Received 27 August 1991; accepted 13 September 1991) This work was supported by grants from the National Science Foundation, Air Force Office of Scientific Research, and the Office of Health and Environmental Research of the U. S. Department of Energy. We also acknowledge use of resources of the Jet Propulsion Laboratory/Caltech Cray X-MP /18 Supercomputer.
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Air Force Office of Scientific Research (AFOSR)UNSPECIFIED
Department of Energy (DOE)UNSPECIFIED
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Caltech Arthur Amos Noyes Laboratory of Chemical Physics8498
Issue or Number:12
Record Number:CaltechAUTHORS:20151028-114735255
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20151028-114735255
Official Citation:Rotationally resolved photoelectron spectra in resonance enhanced multiphoton ionization of HCl via the F  1Δ2 Rydberg state Wang, Kwanghsi and McKoy, V., The Journal of Chemical Physics, 95, 8718-8724 (1991), DOI:http://dx.doi.org/10.1063/1.461256
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:61659
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:09 Nov 2015 22:09
Last Modified:03 Oct 2019 09:10

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