Journal article Open Access

Search for X-Ray Induced Acceleration of the Decay of the 31-Yr Isomer of 178Hf Using Synchrotron Radiation

Ahmad, I.; Mashayekhi, A.; Banar, J. C.; McNabb, D. P.; Becker, J. A.; Miller, G. G.; Gemmell, D. S.; Moore, E. F.; Kraemer, A.; Pangault, L. N.; Rundberg, R. S.; Schiffer, J. P.; Shastri, S. D.; Wang, T. F.; Ja, Becker; Wilhelmy, J. B.


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  <titles>
    <title>Search for X-Ray Induced Acceleration of the Decay of the 31-Yr Isomer of 178Hf Using Synchrotron Radiation</title>
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  <publisher>Zenodo</publisher>
  <publicationYear>2001</publicationYear>
  <dates>
    <date dateType="Issued">2001-01-01</date>
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  <resourceType resourceTypeGeneral="Text">Journal article</resourceType>
  <alternateIdentifiers>
    <alternateIdentifier alternateIdentifierType="url">https://zenodo.org/record/1233935</alternateIdentifier>
  </alternateIdentifiers>
  <relatedIdentifiers>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsIdenticalTo">10.1103/physrevlett.87.072503</relatedIdentifier>
  </relatedIdentifiers>
  <rightsList>
    <rights rightsURI="https://creativecommons.org/publicdomain/zero/1.0/legalcode">Creative Commons Zero v1.0 Universal</rights>
    <rights rightsURI="info:eu-repo/semantics/openAccess">Open Access</rights>
  </rightsList>
  <descriptions>
    <description descriptionType="Abstract">Enhanced decay of the 31-yr isomer of 178Hf 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 2×10^-27cm^2 keV, below the previously reported values by more than 5 orders of magnitude; at 8 keV the limit is 5×10^-26 cm^2 keV.</description>
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