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Title: Measurement of the partial photoionization cross sections and asymmetry parameters of S atoms in the photon energy range 10.0-30.0 eV using constant-ionic-state spectroscopy

Abstract

The partial photoionization cross sections and asymmetry parameters of S atoms have been measured using constant-ionic-state (CIS) spectroscopy in the photon energy range 10.0-30.0 eV. The ionizations investigated in these CIS experiments are the (3p){sup -1} ionizations S{sup +}({sup 4}S)(leftarrow)S({sup 3}P), S{sup +}({sup 2}D)(leftarrow)S({sup 3}P), and S{sup +}({sup 2}P)(leftarrow)S({sup 3}P). For the first time Rydberg series which converge to the fourth ionization limit have been observed and assignments of these series have been proposed. These correspond to excitations to Rydberg states that are parts of series which converge to the fourth ionization limit, S{sup +}({sup 4}P)(leftarrow)S({sup 3}P) (3s){sup -1}, and autoionize to the lower S{sup +}({sup 4}S), S{sup +}({sup 2}D), or S{sup +}({sup 2}P) states. For each series observed in the CIS spectra photoelectron angular distribution studies, combined with other evidence, has allowed the angular momentum character of the free electron on autoionization to be determined.

Authors:
; ; ; ; ; ;  [1];  [2];  [3];  [4];  [4];  [3]
  1. Department of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ (United Kingdom)
  2. (Portugal)
  3. (United Kingdom)
  4. (Italy)
Publication Date:
OSTI Identifier:
20991248
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Chemical Physics; Journal Volume: 126; Journal Issue: 15; Other Information: DOI: 10.1063/1.2720391; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; AUTOIONIZATION; CROSS SECTIONS; EV RANGE 10-100; PHOTOELECTRON SPECTROSCOPY; PHOTOIONIZATION; PHOTON-ATOM COLLISIONS; RYDBERG STATES; SPECTRA; SULFUR; SULFUR IONS

Citation Formats

Innocenti, Fabrizio, Zuin, Lucia, Costa, Maria L., Dias, Antonio A., Morris, Alan, Stranges, Stefano, Dyke, John M., CEFITEC, Department of Physics, Faculdade de Ciencias e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Department of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, Department of Chemistry, ISMN-CNR Sezione Roma La Sapienza I-00185, INSTM, Unita di Roma, La Sapienza, and Department of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ. Measurement of the partial photoionization cross sections and asymmetry parameters of S atoms in the photon energy range 10.0-30.0 eV using constant-ionic-state spectroscopy. United States: N. p., 2007. Web. doi:10.1063/1.2720391.
Innocenti, Fabrizio, Zuin, Lucia, Costa, Maria L., Dias, Antonio A., Morris, Alan, Stranges, Stefano, Dyke, John M., CEFITEC, Department of Physics, Faculdade de Ciencias e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Department of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, Department of Chemistry, ISMN-CNR Sezione Roma La Sapienza I-00185, INSTM, Unita di Roma, La Sapienza, & Department of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ. Measurement of the partial photoionization cross sections and asymmetry parameters of S atoms in the photon energy range 10.0-30.0 eV using constant-ionic-state spectroscopy. United States. doi:10.1063/1.2720391.
Innocenti, Fabrizio, Zuin, Lucia, Costa, Maria L., Dias, Antonio A., Morris, Alan, Stranges, Stefano, Dyke, John M., CEFITEC, Department of Physics, Faculdade de Ciencias e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Department of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, Department of Chemistry, ISMN-CNR Sezione Roma La Sapienza I-00185, INSTM, Unita di Roma, La Sapienza, and Department of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ. Sat . "Measurement of the partial photoionization cross sections and asymmetry parameters of S atoms in the photon energy range 10.0-30.0 eV using constant-ionic-state spectroscopy". United States. doi:10.1063/1.2720391.
@article{osti_20991248,
title = {Measurement of the partial photoionization cross sections and asymmetry parameters of S atoms in the photon energy range 10.0-30.0 eV using constant-ionic-state spectroscopy},
author = {Innocenti, Fabrizio and Zuin, Lucia and Costa, Maria L. and Dias, Antonio A. and Morris, Alan and Stranges, Stefano and Dyke, John M. and CEFITEC, Department of Physics, Faculdade de Ciencias e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica and Department of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ and Department of Chemistry, ISMN-CNR Sezione Roma La Sapienza I-00185 and INSTM, Unita di Roma, La Sapienza and Department of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ},
abstractNote = {The partial photoionization cross sections and asymmetry parameters of S atoms have been measured using constant-ionic-state (CIS) spectroscopy in the photon energy range 10.0-30.0 eV. The ionizations investigated in these CIS experiments are the (3p){sup -1} ionizations S{sup +}({sup 4}S)(leftarrow)S({sup 3}P), S{sup +}({sup 2}D)(leftarrow)S({sup 3}P), and S{sup +}({sup 2}P)(leftarrow)S({sup 3}P). For the first time Rydberg series which converge to the fourth ionization limit have been observed and assignments of these series have been proposed. These correspond to excitations to Rydberg states that are parts of series which converge to the fourth ionization limit, S{sup +}({sup 4}P)(leftarrow)S({sup 3}P) (3s){sup -1}, and autoionize to the lower S{sup +}({sup 4}S), S{sup +}({sup 2}D), or S{sup +}({sup 2}P) states. For each series observed in the CIS spectra photoelectron angular distribution studies, combined with other evidence, has allowed the angular momentum character of the free electron on autoionization to be determined.},
doi = {10.1063/1.2720391},
journal = {Journal of Chemical Physics},
number = 15,
volume = 126,
place = {United States},
year = {Sat Apr 21 00:00:00 EDT 2007},
month = {Sat Apr 21 00:00:00 EDT 2007}
}