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Title: Nuclear excitation by electronic transition (NEET) 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,' PNEET, of 1.3 x 10{sup -10}. PNEET 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 PNEET <9 x 10{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.

Authors:
; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
942839
Report Number(s):
ANL/PHY/JA-35100
Journal ID: ISSN 0556-2813; PRVCAN; TRN: US200923%%634
DOE Contract Number:  
DE-AC02-06CH11357
Resource Type:
Journal Article
Journal Name:
Phys. Rev. C
Additional Journal Information:
Journal Volume: 61; Journal Issue: 05 ; May 2000; Journal ID: ISSN 0556-2813
Country of Publication:
United States
Language:
ENGLISH
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; EXCITATION; LEVELS; OSMIUM 189; PROBABILITY

Citation Formats

Ahmad, I., Dunford, R. W., Esbensen, H., Gemmell, D. S., Kanter, E. P., Rutt, U., and Southworth, S. H. Nuclear excitation by electronic transition (NEET) in {sup 189}Os.. United States: N. p., 2000. Web.
Ahmad, I., Dunford, R. W., Esbensen, H., Gemmell, D. S., Kanter, E. P., Rutt, U., & Southworth, S. H. Nuclear excitation by electronic transition (NEET) in {sup 189}Os.. United States.
Ahmad, I., Dunford, R. W., Esbensen, H., Gemmell, D. S., Kanter, E. P., Rutt, U., and Southworth, S. H. Mon . "Nuclear excitation by electronic transition (NEET) in {sup 189}Os.". United States.
@article{osti_942839,
title = {Nuclear excitation by electronic transition (NEET) in {sup 189}Os.},
author = {Ahmad, I. and Dunford, R. W. and Esbensen, H. and Gemmell, D. S. and Kanter, E. P. and Rutt, 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,' PNEET, of 1.3 x 10{sup -10}. PNEET 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 PNEET <9 x 10{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.},
doi = {},
journal = {Phys. Rev. C},
issn = {0556-2813},
number = 05 ; May 2000,
volume = 61,
place = {United States},
year = {2000},
month = {5}
}