The extraction of lifetimes of weakly-populated nuclear levels in recoil distance method experiments

D. L. Kennedy; A. E. Stuchbery; H. H. Bolotin

doi:10.1016/0029-554X(80)90515-7

The extraction of lifetimes of weakly-populated nuclear levels in recoil distance method experiments

D. L. Kennedy^*, A. E. Stuchbery, H. H. Bolotin

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

13 Citations (Scopus)

Abstract

Two analytic techniques are described which extend the conventional analysis of recoil-distance method (RDM) data. The first technique utilizes the enhanced counting statistics of the composite spectrum formed by the addition of all γ-ray spectra recorded at the different target-to-stopper distances employed, in order to extract the lifetimes of levels whose observed depopulating γ-ray transitions have insufficient statistics to permit conventional analysis. The second technique analyses peak centroids rather than peak areas to account for contamination by flight distance dependent background. The results from a recent study of the lowlying excited states in ^{196, 198}Pt for those levels whose lifetimes could be extracted by conventional RDM analysis are shown to be in good agreement with those obtained using the new methods of analysis.

Original language	English
Pages (from-to)	361-367
Number of pages	7
Journal	Nuclear Instruments and Methods
Volume	171
Issue number	2
DOIs	https://doi.org/10.1016/0029-554X(80)90515-7
Publication status	Published - 15 Apr 1980
Externally published	Yes

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title = "The extraction of lifetimes of weakly-populated nuclear levels in recoil distance method experiments",

abstract = "Two analytic techniques are described which extend the conventional analysis of recoil-distance method (RDM) data. The first technique utilizes the enhanced counting statistics of the composite spectrum formed by the addition of all γ-ray spectra recorded at the different target-to-stopper distances employed, in order to extract the lifetimes of levels whose observed depopulating γ-ray transitions have insufficient statistics to permit conventional analysis. The second technique analyses peak centroids rather than peak areas to account for contamination by flight distance dependent background. The results from a recent study of the lowlying excited states in 196, 198Pt for those levels whose lifetimes could be extracted by conventional RDM analysis are shown to be in good agreement with those obtained using the new methods of analysis.",

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T1 - The extraction of lifetimes of weakly-populated nuclear levels in recoil distance method experiments

AU - Kennedy, D. L.

AU - Stuchbery, A. E.

AU - Bolotin, H. H.

PY - 1980/4/15

Y1 - 1980/4/15

N2 - Two analytic techniques are described which extend the conventional analysis of recoil-distance method (RDM) data. The first technique utilizes the enhanced counting statistics of the composite spectrum formed by the addition of all γ-ray spectra recorded at the different target-to-stopper distances employed, in order to extract the lifetimes of levels whose observed depopulating γ-ray transitions have insufficient statistics to permit conventional analysis. The second technique analyses peak centroids rather than peak areas to account for contamination by flight distance dependent background. The results from a recent study of the lowlying excited states in 196, 198Pt for those levels whose lifetimes could be extracted by conventional RDM analysis are shown to be in good agreement with those obtained using the new methods of analysis.

AB - Two analytic techniques are described which extend the conventional analysis of recoil-distance method (RDM) data. The first technique utilizes the enhanced counting statistics of the composite spectrum formed by the addition of all γ-ray spectra recorded at the different target-to-stopper distances employed, in order to extract the lifetimes of levels whose observed depopulating γ-ray transitions have insufficient statistics to permit conventional analysis. The second technique analyses peak centroids rather than peak areas to account for contamination by flight distance dependent background. The results from a recent study of the lowlying excited states in 196, 198Pt for those levels whose lifetimes could be extracted by conventional RDM analysis are shown to be in good agreement with those obtained using the new methods of analysis.

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JO - Nuclear Instruments and Methods

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IS - 2

ER -

The extraction of lifetimes of weakly-populated nuclear levels in recoil distance method experiments

Abstract

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