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Title: STORAGE RING CROSS SECTION MEASUREMENTS FOR ELECTRON IMPACT IONIZATION OF Fe{sup 12+} FORMING Fe{sup 13+} AND Fe{sup 14+}

Abstract

We report electron impact ionization cross section measurements for electron impact single ionization of Fe{sup 12+} forming Fe{sup 13+} and electron impact double ionization of Fe{sup 12+} forming Fe{sup 14+}. These are the first electron impact ionization data for any Si-like ion uncontaminated by an unknown metastable fraction. Recent distorted wave calculations agree with our single ionization results to within {approx}15%. Double ionization is dominated by inner shell ionization of a 2l electron resulting in autoionization of a second electron as the inner shell hole is filled.

Authors:
; ;  [1]; ; ; ;  [2];  [3]; ;  [4]
  1. Columbia Astrophysics Laboratory, Columbia University, 550 West 120th, New York, NY 10027 (United States)
  2. Max-Planck-Institut fuer Kernphysik, Saupfercheckweg 1, 69117 Heidelberg (Germany)
  3. GSI Helmholtzzentrum fuer Schwerionenforschung, Planckstr. 1, 64291 Darmstadt (Germany)
  4. Institut fuer Atom- und Molekuelphysik, Justus-Liebig-Universitaet Giessen, Leihgesterner Weg 217, 35392 Giessen (Germany)
Publication Date:
OSTI Identifier:
21578394
Resource Type:
Journal Article
Journal Name:
Astrophysical Journal
Additional Journal Information:
Journal Volume: 735; Journal Issue: 2; Other Information: DOI: 10.1088/0004-637X/735/2/105; Journal ID: ISSN 0004-637X
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; AUTOIONIZATION; CROSS SECTIONS; DISTORTED WAVE THEORY; ELECTRONS; INNER-SHELL IONIZATION; STORAGE RINGS; ELEMENTARY PARTICLES; FERMIONS; IONIZATION; LEPTONS

Citation Formats

Hahn, M., Novotny, O., Savin, D. W., Grieser, M., Krantz, C., Repnow, R., Wolf, A., Lestinsky, M., Mueller, A., and Schippers, S. STORAGE RING CROSS SECTION MEASUREMENTS FOR ELECTRON IMPACT IONIZATION OF Fe{sup 12+} FORMING Fe{sup 13+} AND Fe{sup 14+}. United States: N. p., 2011. Web. doi:10.1088/0004-637X/735/2/105.
Hahn, M., Novotny, O., Savin, D. W., Grieser, M., Krantz, C., Repnow, R., Wolf, A., Lestinsky, M., Mueller, A., & Schippers, S. STORAGE RING CROSS SECTION MEASUREMENTS FOR ELECTRON IMPACT IONIZATION OF Fe{sup 12+} FORMING Fe{sup 13+} AND Fe{sup 14+}. United States. doi:10.1088/0004-637X/735/2/105.
Hahn, M., Novotny, O., Savin, D. W., Grieser, M., Krantz, C., Repnow, R., Wolf, A., Lestinsky, M., Mueller, A., and Schippers, S. Sun . "STORAGE RING CROSS SECTION MEASUREMENTS FOR ELECTRON IMPACT IONIZATION OF Fe{sup 12+} FORMING Fe{sup 13+} AND Fe{sup 14+}". United States. doi:10.1088/0004-637X/735/2/105.
@article{osti_21578394,
title = {STORAGE RING CROSS SECTION MEASUREMENTS FOR ELECTRON IMPACT IONIZATION OF Fe{sup 12+} FORMING Fe{sup 13+} AND Fe{sup 14+}},
author = {Hahn, M. and Novotny, O. and Savin, D. W. and Grieser, M. and Krantz, C. and Repnow, R. and Wolf, A. and Lestinsky, M. and Mueller, A. and Schippers, S.},
abstractNote = {We report electron impact ionization cross section measurements for electron impact single ionization of Fe{sup 12+} forming Fe{sup 13+} and electron impact double ionization of Fe{sup 12+} forming Fe{sup 14+}. These are the first electron impact ionization data for any Si-like ion uncontaminated by an unknown metastable fraction. Recent distorted wave calculations agree with our single ionization results to within {approx}15%. Double ionization is dominated by inner shell ionization of a 2l electron resulting in autoionization of a second electron as the inner shell hole is filled.},
doi = {10.1088/0004-637X/735/2/105},
journal = {Astrophysical Journal},
issn = {0004-637X},
number = 2,
volume = 735,
place = {United States},
year = {2011},
month = {7}
}