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Title: Lifetime determination of the Fe XIV 3s{sup 2}3p {sup 2}P{sub 3} at {sub {approx}}{sub sol{approx}} at {sub 2}{sup o} metastable level

Abstract

The lifetime of the 3s{sup 2}3p {sup 2}P{sub 3} at {sub {approx}}{sub sol{approx}} at {sub 2}{sup o} first excited energy level of Fe XIV (Al like) was measured at the Heidelberg electron beam ion trap by monitoring its optical decay to the ground state by a magnetic dipole (M1) forbidden transition at {lambda}=530.29 nm (green coronal line), a well-known line in stellar spectra. A new trapping scheme has been applied. Possible systematic effects were investigated by studying the dependence of the decay curves on various trapping conditions with high statistical significance. The result of 16.726{sub -0.010}{sup +0.020} ms shows an unexplained discrepancy in the average value of existing theoretical predictions. The inclusion of the electron anomalous magnetic moment within the theoretical calculations increases this disagreement, thus pointing at other possible origins of this discrepancy.

Authors:
; ; ; ;  [1]
  1. Max-Planck Institut fuer Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg (Germany)
Publication Date:
OSTI Identifier:
20982301
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. A; Journal Volume: 75; Journal Issue: 3; Other Information: DOI: 10.1103/PhysRevA.75.032504; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; CATIONS; DECAY; ELECTRON BEAMS; ELECTRONIC STRUCTURE; ELECTRONS; FORBIDDEN TRANSITIONS; FORECASTING; GROUND STATES; IRON; LIFETIME; MAGNETIC DIPOLES; MAGNETIC MOMENTS; METASTABLE STATES; TRAPPING; TRAPS

Citation Formats

Brenner, G., Lopez-Urrutia, J. R. Crespo, Harman, Z., Mokler, P. H., and Ullrich, J. Lifetime determination of the Fe XIV 3s{sup 2}3p {sup 2}P{sub 3} at {sub {approx}}{sub sol{approx}} at {sub 2}{sup o} metastable level. United States: N. p., 2007. Web. doi:10.1103/PHYSREVA.75.032504.
Brenner, G., Lopez-Urrutia, J. R. Crespo, Harman, Z., Mokler, P. H., & Ullrich, J. Lifetime determination of the Fe XIV 3s{sup 2}3p {sup 2}P{sub 3} at {sub {approx}}{sub sol{approx}} at {sub 2}{sup o} metastable level. United States. doi:10.1103/PHYSREVA.75.032504.
Brenner, G., Lopez-Urrutia, J. R. Crespo, Harman, Z., Mokler, P. H., and Ullrich, J. Thu . "Lifetime determination of the Fe XIV 3s{sup 2}3p {sup 2}P{sub 3} at {sub {approx}}{sub sol{approx}} at {sub 2}{sup o} metastable level". United States. doi:10.1103/PHYSREVA.75.032504.
@article{osti_20982301,
title = {Lifetime determination of the Fe XIV 3s{sup 2}3p {sup 2}P{sub 3} at {sub {approx}}{sub sol{approx}} at {sub 2}{sup o} metastable level},
author = {Brenner, G. and Lopez-Urrutia, J. R. Crespo and Harman, Z. and Mokler, P. H. and Ullrich, J.},
abstractNote = {The lifetime of the 3s{sup 2}3p {sup 2}P{sub 3} at {sub {approx}}{sub sol{approx}} at {sub 2}{sup o} first excited energy level of Fe XIV (Al like) was measured at the Heidelberg electron beam ion trap by monitoring its optical decay to the ground state by a magnetic dipole (M1) forbidden transition at {lambda}=530.29 nm (green coronal line), a well-known line in stellar spectra. A new trapping scheme has been applied. Possible systematic effects were investigated by studying the dependence of the decay curves on various trapping conditions with high statistical significance. The result of 16.726{sub -0.010}{sup +0.020} ms shows an unexplained discrepancy in the average value of existing theoretical predictions. The inclusion of the electron anomalous magnetic moment within the theoretical calculations increases this disagreement, thus pointing at other possible origins of this discrepancy.},
doi = {10.1103/PHYSREVA.75.032504},
journal = {Physical Review. A},
number = 3,
volume = 75,
place = {United States},
year = {Thu Mar 15 00:00:00 EDT 2007},
month = {Thu Mar 15 00:00:00 EDT 2007}
}
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