TY - JOUR
T1 - Level lifetimes in 94Zr from DSAM measurements following inelastic neutron scattering
AU - Yates, S. W.
AU - Peters, E. E.
AU - Chakraborty, A.
AU - Crider, B. P.
AU - McEllistrem, M. T.
AU - Prados-Estévez, F. M.
AU - Vanhoy, J. R.
N1 - Copyright:
Copyright 2014 Elsevier B.V., All rights reserved.
PY - 2014
Y1 - 2014
N2 - The lifetime of the second 2+ state in 94Zr was redetermined by the Doppler-shift attenuation method following inelastic neutron scattering (DSAM-INS) from metallic Zr and ZrO2 samples of natural isotopic abundance. The new value for the level lifetime differs significantly from the previously published value, with the new lifetime found to be roughly twice that value. A reanalysis of the original γ-ray data from the enriched 94ZrO2 sample failed to expose the source of this discrepancy; however, powder X-ray diffraction and scanning electron microscopy performed on each scattering sample, including the enriched sample used previously, provide clues to an explanation and reveal the role of the chemical properties of the sample material in DSAM-INS lifetime determinations.
AB - The lifetime of the second 2+ state in 94Zr was redetermined by the Doppler-shift attenuation method following inelastic neutron scattering (DSAM-INS) from metallic Zr and ZrO2 samples of natural isotopic abundance. The new value for the level lifetime differs significantly from the previously published value, with the new lifetime found to be roughly twice that value. A reanalysis of the original γ-ray data from the enriched 94ZrO2 sample failed to expose the source of this discrepancy; however, powder X-ray diffraction and scanning electron microscopy performed on each scattering sample, including the enriched sample used previously, provide clues to an explanation and reveal the role of the chemical properties of the sample material in DSAM-INS lifetime determinations.
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U2 - 10.1051/epjconf/20146602111
DO - 10.1051/epjconf/20146602111
M3 - Conference article
AN - SCOPUS:84898765418
SN - 2101-6275
VL - 66
JO - EPJ Web of Conferences
JF - EPJ Web of Conferences
M1 - 02111
T2 - 2013 International Nuclear Physics Conference, INPC 2013
Y2 - 2 June 2013 through 7 June 2013
ER -