Level lifetimes in 94Zr from DSAM measurements following inelastic neutron scattering

S. W. Yates; E. E. Peters; A. Chakraborty; B. P. Crider; M. T. McEllistrem; F. M. Prados-Estévez; J. R. Vanhoy

doi:10.1051/epjconf/20146602111

Level lifetimes in ⁹⁴Zr from DSAM measurements following inelastic neutron scattering

S. W. Yates, E. E. Peters, A. Chakraborty, B. P. Crider, M. T. McEllistrem, F. M. Prados-Estévez, J. R. Vanhoy

Chemistry

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Abstract

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.

Original language	English
Article number	02111
Journal	EPJ Web of Conferences
Volume	66
DOIs	https://doi.org/10.1051/epjconf/20146602111
State	Published - 2014
Event	2013 International Nuclear Physics Conference, INPC 2013 - Firenze, Italy Duration: Jun 2 2013 → Jun 7 2013

ASJC Scopus subject areas

General Physics and Astronomy

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10.1051/epjconf/20146602111

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@article{966d936f2d3245cf83126c21eb38da51,

title = "Level lifetimes in 94Zr from DSAM measurements following inelastic neutron scattering",

abstract = "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.",

author = "Yates, {S. W.} and Peters, {E. E.} and A. Chakraborty and Crider, {B. P.} and McEllistrem, {M. T.} and Prados-Est{\'e}vez, {F. M.} and Vanhoy, {J. R.}",

year = "2014",

doi = "10.1051/epjconf/20146602111",

language = "English",

volume = "66",

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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.

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 -

Level lifetimes in ⁹⁴Zr from DSAM measurements following inelastic neutron scattering

Abstract

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