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Title: Nuclear excitation by electronic transition in {sup 189}Os

Abstract

Monochromatic x rays have been used to explore the phenomenon of nuclear excitation by electronic transition (NEET) in the {sup 189}Os atomic/nuclear system. A new theoretical approach to calculating this process has also been developed and predicts a value for the ''NEET probability,'' P{sub NEET}, of 1.3x10{sup -10}. P{sub NEET} is the probability that a given atomic excitation (in this case a K vacancy), will result in the excitation of a specific nuclear state (in this case the 69.5-keV level in {sup 189}Os). This value is much lower than most of the calculated values given in the literature for this system. Our measurement gives the result P{sub NEET}<9x10{sup -10}, an upper limit which is several orders of magnitude lower than the values found in previous measurements, but which is consistent with the new calculation. (c) 2000 The American Physical Society.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1]
  1. Argonne National Laboratory, Argonne, Illinois 60439 (United States)
Publication Date:
OSTI Identifier:
20216338
Resource Type:
Journal Article
Journal Name:
Physical Review. C, Nuclear Physics
Additional Journal Information:
Journal Volume: 61; Journal Issue: 5; Other Information: PBD: May 2000; Journal ID: ISSN 0556-2813
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; OSMIUM 189; EXCITED STATES; TRANSITION AMPLITUDES; X-RAY SPECTRA; NUCLEAR DECAY; EXPERIMENTAL DATA; THEORETICAL DATA

Citation Formats

Ahmad, I., Dunford, R. W., Esbensen, H., Gemmell, D. S., Kanter, E. P., Ruett, U., and Southworth, S. H. Nuclear excitation by electronic transition in {sup 189}Os. United States: N. p., 2000. Web. doi:10.1103/PhysRevC.61.051304.
Ahmad, I., Dunford, R. W., Esbensen, H., Gemmell, D. S., Kanter, E. P., Ruett, U., & Southworth, S. H. Nuclear excitation by electronic transition in {sup 189}Os. United States. doi:10.1103/PhysRevC.61.051304.
Ahmad, I., Dunford, R. W., Esbensen, H., Gemmell, D. S., Kanter, E. P., Ruett, U., and Southworth, S. H. Mon . "Nuclear excitation by electronic transition in {sup 189}Os". United States. doi:10.1103/PhysRevC.61.051304.
@article{osti_20216338,
title = {Nuclear excitation by electronic transition in {sup 189}Os},
author = {Ahmad, I. and Dunford, R. W. and Esbensen, H. and Gemmell, D. S. and Kanter, E. P. and Ruett, U. and Southworth, S. H.},
abstractNote = {Monochromatic x rays have been used to explore the phenomenon of nuclear excitation by electronic transition (NEET) in the {sup 189}Os atomic/nuclear system. A new theoretical approach to calculating this process has also been developed and predicts a value for the ''NEET probability,'' P{sub NEET}, of 1.3x10{sup -10}. P{sub NEET} is the probability that a given atomic excitation (in this case a K vacancy), will result in the excitation of a specific nuclear state (in this case the 69.5-keV level in {sup 189}Os). This value is much lower than most of the calculated values given in the literature for this system. Our measurement gives the result P{sub NEET}<9x10{sup -10}, an upper limit which is several orders of magnitude lower than the values found in previous measurements, but which is consistent with the new calculation. (c) 2000 The American Physical Society.},
doi = {10.1103/PhysRevC.61.051304},
journal = {Physical Review. C, Nuclear Physics},
issn = {0556-2813},
number = 5,
volume = 61,
place = {United States},
year = {2000},
month = {5}
}