Gamma–gamma angular correlation analysis techniques with the GRIFFIN spectrometer

J. K. Smith; A. D. MacLean; W. Ashfield; A. Chester; A. B. Garnsworthy; C. E. Svensson

doi:10.1016/j.nima.2018.10.097

Gamma–gamma angular correlation analysis techniques with the GRIFFIN spectrometer

J. K. Smith^*, A. D. MacLean, W. Ashfield, A. Chester, A. B. Garnsworthy, C. E. Svensson

^*Corresponding author for this work

Physics and Astronomy

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

20 Scopus citations

Abstract

Gamma–gamma angular correlation measurements are a powerful tool for identifying the angular momentum (spin) of excited nuclear states involved in a γ-ray cascade, and for measuring the multipole orders and mixing ratios of transitions. Though the physical angular correlations are fully calculable from first principles, experimental effects can make the extraction of coefficients and thus conclusions about spins and mixing ratios difficult. In this article we present data analysis techniques developed for the clover detectors of the GRIFFIN spectrometer at TRIUMF-ISAC combined with GEANT4 simulations in order to extract accurate experimental results.

Original language	English (US)
Pages (from-to)	47-63
Number of pages	17
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	922
DOIs	https://doi.org/10.1016/j.nima.2018.10.097
State	Published - Apr 1 2019

Funding

The authors would like to thank G.C. Ball, G. Hackman, and K. Starosta for useful discussions. The GRIFFIN infrastructure has been funded jointly by the Canada Foundation for Innovation, TRIUMF and the University of Guelph. TRIUMF receives funding through a contribution agreement through the National Research Council Canada. C.E.S. acknowledges support from the Canada Research Chairs program. This work was supported by the Natural Sciences and Engineering Research Council of Canada .

Keywords

Angular correlations
GRIFFIN
Gamma-ray spectroscopy
ISAC
TRIUMF

ASJC Scopus subject areas

Nuclear and High Energy Physics
Instrumentation

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Smith, J. K., MacLean, A. D., Ashfield, W., Chester, A., Garnsworthy, A. B., & Svensson, C. E. (2019). Gamma–gamma angular correlation analysis techniques with the GRIFFIN spectrometer. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 922, 47-63. https://doi.org/10.1016/j.nima.2018.10.097

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abstract = "Gamma–gamma angular correlation measurements are a powerful tool for identifying the angular momentum (spin) of excited nuclear states involved in a γ-ray cascade, and for measuring the multipole orders and mixing ratios of transitions. Though the physical angular correlations are fully calculable from first principles, experimental effects can make the extraction of coefficients and thus conclusions about spins and mixing ratios difficult. In this article we present data analysis techniques developed for the clover detectors of the GRIFFIN spectrometer at TRIUMF-ISAC combined with GEANT4 simulations in order to extract accurate experimental results.",

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AU - MacLean, A. D.

AU - Ashfield, W.

AU - Chester, A.

AU - Garnsworthy, A. B.

AU - Svensson, C. E.

PY - 2019/4/1

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N2 - Gamma–gamma angular correlation measurements are a powerful tool for identifying the angular momentum (spin) of excited nuclear states involved in a γ-ray cascade, and for measuring the multipole orders and mixing ratios of transitions. Though the physical angular correlations are fully calculable from first principles, experimental effects can make the extraction of coefficients and thus conclusions about spins and mixing ratios difficult. In this article we present data analysis techniques developed for the clover detectors of the GRIFFIN spectrometer at TRIUMF-ISAC combined with GEANT4 simulations in order to extract accurate experimental results.

AB - Gamma–gamma angular correlation measurements are a powerful tool for identifying the angular momentum (spin) of excited nuclear states involved in a γ-ray cascade, and for measuring the multipole orders and mixing ratios of transitions. Though the physical angular correlations are fully calculable from first principles, experimental effects can make the extraction of coefficients and thus conclusions about spins and mixing ratios difficult. In this article we present data analysis techniques developed for the clover detectors of the GRIFFIN spectrometer at TRIUMF-ISAC combined with GEANT4 simulations in order to extract accurate experimental results.

KW - Angular correlations

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KW - Gamma-ray spectroscopy

KW - ISAC

KW - TRIUMF

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ER -

Gamma–gamma angular correlation analysis techniques with the GRIFFIN spectrometer

Abstract

Funding

Keywords

ASJC Scopus subject areas

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