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Accurate Moessbauer line-shape measurements including interference in [sup 182]W, [sup 183]W, [sup 191]Ir, and [sup 159]Tb

Journal Article · · Physical Review, C (Nuclear Physics); (United States)
;  [1];  [2]
  1. Physics Department, Purdue University, West Lafayette, Indiana 47907 (United States)
  2. Physics Department, University of Missouri, Columbia, Missouri 65211 (United States)
We have made precise final state interference measurements using very intense Moessbauer sources and an exact line-shape analysis. Two transitions in tungsten metal, as well as one in iridium metal and one in terbium oxide, have been studied. The interference parameters 100[beta] found are [minus]1.3(3) for the 99.1-keV transition in [sup 183]W, [minus]1.2(1) for the 100.1-keV transition in [sup 182]W, [minus]0.71(8) for the 129.4-keV transition in [sup 191]Ir, and [minus]0.48(5) for the 58.0-keV transition in [sup 159]Tb. All values agreed with theory to within error. Our measurement of 1.16(2) cm/s for the [sup 191]Ir linewidth agrees with other Moessbauer measurements and shows no indication of hyperfine broadening, but disagrees with some non-Moessbauer measurements reported in the literature. The tungsten and terbium transitions also show no signs of broadening or splitting.
DOE Contract Number:
FG02-85ER45199; FG02-85ER45200
OSTI ID:
6643987
Journal Information:
Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 47:5; ISSN 0556-2813; ISSN PRVCAN
Country of Publication:
United States
Language:
English