Barber, LiamLiamBarberCullen, David M.David M.CullenGiles, M.M.M.M.GilesNara Singh, B.S.B.S.Nara SinghMallaburn, M.J.M.J.MallaburnBeckers, MarcelMarcelBeckersBlazhev, AndreyAndreyBlazhevBraunroth, ThomasThomasBraunrothDewald, AlfredAlfredDewaldFransen, ChristophChristophFransenGoldkuhle, AlinaAlinaGoldkuhleJolie, JanJanJolieMammes, FranziskaFranziskaMammesMüller-Gatermann, ClausClausMüller-GatermannWölk, DorotheaDorotheaWölkZell, Karl OskarKarl OskarZell2022-03-062022-03-062020https://publica.fraunhofer.de/handle/publica/25981410.1016/j.nima.2019.162965A new method of extracting the g-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 g-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 yrast 2+1 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 g-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.enRDDSDDCMUDCMplungernuclear-state lifetimeunresolved Doppler-shifted component620539journal article