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Title: Energy levels, radiative rates, and lifetimes for transitions in W XL

Abstract

Energy levels and radiative rates are reported for transitions in Br-like tungsten, W XL, calculated with the general-purpose relativistic atomic structure package (GRASP). Configuration interaction (CI) has been included among 46 configurations (generating 4215 levels) over a wide energy range up to 213 Ryd. However, for conciseness results are only listed for the lowest 360 levels (with energies up to ∼43 Ryd), which mainly belong to the 4s{sup 2}4p{sup 5},4s{sup 2}4p{sup 4}4d,4s{sup 2}4p{sup 4}4f,4s4p{sup 6},4p{sup 6}4d,4s4p{sup 5}4d,4s{sup 2}4p{sup 3}4d{sup 2}, and 4s{sup 2}4p{sup 3}4d4f configurations, and provided for four types of transitions, E1, E2, M1, and M2. Comparisons are made with existing (but limited) results. However, to fully assess the accuracy of our data, analogous calculations have been performed with the flexible atomic code, including an even larger CI than in GRASP. Our energy levels are estimated to be accurate to better than 0.02 Ryd, whereas results for radiative rates (and lifetimes) should be accurate to better than 20% for a majority of the strong transitions.

Authors:
Publication Date:
OSTI Identifier:
22439764
Resource Type:
Journal Article
Journal Name:
Atomic Data and Nuclear Data Tables
Additional Journal Information:
Journal Volume: 100; Journal Issue: 6; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0092-640X
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ATOMS; BROMINE; COMPARATIVE EVALUATIONS; CONFIGURATION INTERACTION; ENERGY LEVELS; LIFETIME; OSCILLATOR STRENGTHS; RELATIVISTIC RANGE; TUNGSTEN

Citation Formats

Aggarwal, Kanti M., E-mail: K.Aggarwal@qub.ac.uk, and Keenan, Francis P. Energy levels, radiative rates, and lifetimes for transitions in W XL. United States: N. p., 2014. Web. doi:10.1016/J.ADT.2014.02.006.
Aggarwal, Kanti M., E-mail: K.Aggarwal@qub.ac.uk, & Keenan, Francis P. Energy levels, radiative rates, and lifetimes for transitions in W XL. United States. https://doi.org/10.1016/J.ADT.2014.02.006
Aggarwal, Kanti M., E-mail: K.Aggarwal@qub.ac.uk, and Keenan, Francis P. 2014. "Energy levels, radiative rates, and lifetimes for transitions in W XL". United States. https://doi.org/10.1016/J.ADT.2014.02.006.
@article{osti_22439764,
title = {Energy levels, radiative rates, and lifetimes for transitions in W XL},
author = {Aggarwal, Kanti M., E-mail: K.Aggarwal@qub.ac.uk and Keenan, Francis P.},
abstractNote = {Energy levels and radiative rates are reported for transitions in Br-like tungsten, W XL, calculated with the general-purpose relativistic atomic structure package (GRASP). Configuration interaction (CI) has been included among 46 configurations (generating 4215 levels) over a wide energy range up to 213 Ryd. However, for conciseness results are only listed for the lowest 360 levels (with energies up to ∼43 Ryd), which mainly belong to the 4s{sup 2}4p{sup 5},4s{sup 2}4p{sup 4}4d,4s{sup 2}4p{sup 4}4f,4s4p{sup 6},4p{sup 6}4d,4s4p{sup 5}4d,4s{sup 2}4p{sup 3}4d{sup 2}, and 4s{sup 2}4p{sup 3}4d4f configurations, and provided for four types of transitions, E1, E2, M1, and M2. Comparisons are made with existing (but limited) results. However, to fully assess the accuracy of our data, analogous calculations have been performed with the flexible atomic code, including an even larger CI than in GRASP. Our energy levels are estimated to be accurate to better than 0.02 Ryd, whereas results for radiative rates (and lifetimes) should be accurate to better than 20% for a majority of the strong transitions.},
doi = {10.1016/J.ADT.2014.02.006},
url = {https://www.osti.gov/biblio/22439764}, journal = {Atomic Data and Nuclear Data Tables},
issn = {0092-640X},
number = 6,
volume = 100,
place = {United States},
year = {Sat Nov 15 00:00:00 EST 2014},
month = {Sat Nov 15 00:00:00 EST 2014}
}