Performing the differential decay curve method on gamma-ray transitions with unresolved Doppler-shifted components

L. Barber*, D.M. Cullen, M.M. Giles, B.S. Nara Singh, M.J. Mallaburn, M. Beckers, A. Blazhev, T. Braunroth, A. Dewald, C. Fransen, A. Goldkuhle, J. Jolie, F. Mammes, C. Muller-Gatermann, D. Wolk, K.O. Zell

*Corresponding author for this work

Research output: Contribution to journalArticle

1 Downloads (Pure)

Abstract

A new method of extracting the gamma-ray intensities necessary to perform lifetime measurements using the differential decay curve method (DDCM) is presented in this work, the unresolved Doppler-shifted components method (UDCM). The UDCM allows for a DDCM analysis to be performed using a gamma-ray transition for which the fully Doppler-shifted and degraded components are unresolvable in energy and so are detected as a single peak. This technique was used to measure the known lifetime of the 2_1^+ yrast state in 50Mn with a depopulating transition that does not have resolvable fully Doppler-shifted and degraded components. The lifetime measured through applying the UDCM was consistent with the standard DDCM measurement of the 2_1^+ state. Use of the UDCM allows for DDCM lifetime measurements to be made using transitions of smaller gamma-ray energies, smaller recoil velocities and, in some cases, with a smaller uncertainty. In contrast to a standard DDCM analysis, a UDCM analysis is also independent of the widths of the fully Doppler-shifted and degraded components and as a result they do not need to be determined.
Original languageEnglish
Article number162965
Number of pages6
JournalNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume950
Early online date14 Oct 2019
DOIs
Publication statusPublished - 11 Jan 2020
Externally publishedYes

Keywords

  • RDDS
  • DDCM
  • UDCM
  • Plunger
  • Nuclear-state lifetimes
  • Unresolved Doppler-shifted components

Fingerprint Dive into the research topics of 'Performing the differential decay curve method on gamma-ray transitions with unresolved Doppler-shifted components'. Together they form a unique fingerprint.

  • Cite this

    Barber, L., Cullen, D. M., Giles, M. M., Nara Singh, B. S., Mallaburn, M. J., Beckers, M., Blazhev, A., Braunroth, T., Dewald, A., Fransen, C., Goldkuhle, A., Jolie, J., Mammes, F., Muller-Gatermann, C., Wolk, D., & Zell, K. O. (2020). Performing the differential decay curve method on gamma-ray transitions with unresolved Doppler-shifted components. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 950, [162965]. https://doi.org/10.1016/j.nima.2019.162965