Neutron capture cross sections of 136,138,140,142Ce and the decays of 137Ce Public Deposited

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  • The activation method has been used to measure the cross sections for radiative capture of neutrons by all isotopes of stable Ce (mass numbers 136, 138, 140, and 142). Both the thermal cross sections and the resonance integrals have been determined from separate irradiations with thermal and epithermal neutrons, wherever possible cross-checking results from different irradiation facilities with different flux distributions. Because determination of precise cross sections by activation requires equally precise values of the decay half-lives, we have remeasured decay half-lives of ¹³⁷Ce[superscript g], ¹³⁷Ce[superscript m], ¹³⁹Ce[superscript m], ¹⁴¹Ce, and ¹⁴³Ce. Improved values for the energies and intensities of the γrays in the decays of ¹³⁷Ce[superscript g] and ¹³⁷Ce[superscript m] have also been determined, along with corresponding values for the βdecay feedings and energies of excited states in ¹³⁷La..
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  • Torrel, S., & Krane, K. (2012). Neutron capture cross sections of ce-136,ce-138,ce-140,ce-142 and the decays of ce-137. Physical Review C, 86(3) doi: 10.1103/PhysRevC.86.034340
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  • description.provenance : Approved for entry into archive by Deborah Campbell(deborah.campbell@oregonstate.edu) on 2013-02-12T17:35:54Z (GMT) No. of bitstreams: 1 TorrelSPhysicsNeutronCaptureCross.pdf: 593033 bytes, checksum: f487cb27cb1ee4b24a24a537c42babc3 (MD5)
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