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Search for X-Ray Induced Acceleration of the Decay of the 31-Yr Isomer ofH178fUsing Synchrotron Radiation

descriptionPublicationkeyboard_double_arrow_right Article 27 Jul 2001Publisher:American Physical Society (APS)Journal:Physical Review Letters, volume 87 (issn: 0031-9007, eissn: 1079-7114,

Authors: Ahmad, I.; Mashayekhi, A.; Banar, J. C.; McNabb, D. P.; Becker, J. A.; Miller, G. G.; Gemmell, D. S.; +9 Authors

doi: 10.1103/physrevlett.87.072503

pmid: 11497887

Search for X-Ray Induced Acceleration of the Decay of the 31-Yr Isomer ofH178fUsing Synchrotron Radiation

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Abstract

Enhanced decay of the 31-yr isomer of (178)Hf induced by x-ray irradiation has been reported previously. Here we describe an attempt to reproduce this result with an intense "white" x-ray beam from the Advanced Photon Source. No induced decay was observed. The upper limits for the energy-integrated cross sections for such a process, over the range of energies of 20--60 keV x rays, are less than 2 x 10(-27) cm(2) keV, below the previously reported values by more than 5 orders of magnitude; at 8 keV the limit is 5 x 10(-26) cm(2) keV.

Related Organizations

Los Alamos National Laboratory
United States
Advanced Photon Source
United States
Argonne National Laboratory
United States
Lawrence Berkeley National Laboratory
United States

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