Performing the differential decay curve method on <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" id="d1e2214" altimg="si10.svg"><mml:mi>γ</mml:mi></mml:math>-ray transitions with unresolved Doppler-shifted components

Barber, L.; Cullen, D. M.; Giles, M.; Singh, Nara; Mallaburn, Michael; Beckers, M.; Blazhev, A.; Braunroth, T.; Dewald, Α.; Fransen, C.; Goldkuhle, A.; Jolie, J.; Mammes, F.; Müller-Gatermann, C.; Wölk, D.; Zell, K. O.

doi:10.1016/j.nima.2019.162965

Cited by 3 publications

(2 citation statements)

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“…The transmission 1 transitions occurring after the reset foil for each target-to-reset foil distances. This was measured by applying the unresolved Doppler-shifted components method (UDCM) [25]. At distances longer than x = 1223 µm the proportion of 4…”

Section: Ddcm Coincidence Analysismentioning

confidence: 99%

“…This meant that it was not possible to set a gate on feeding transitions occurring before the reset foil. However, using the unresolved Doppler-shifted components method (UDCM) [25] it was possible to measure the proportional intensity of 4 + 1 → 2 + 1 transitions occurring before and after the foil. This uses the change in the measured centroid of the transition to find the relative intensities of the unresolved Doppler-shifted components of the transition.…”

Section: Ddcm Coincidence Analysismentioning

confidence: 99%

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Lifetime measurements of yrast states in $$^{\mathbf {178}}$$Pt using the charge plunger method with a recoil separator

et al. 2021

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Lifetime measurements in $$^{178}$$ 178 Pt with excited states de-exciting through $$\gamma $$ γ -ray transitions and internal electron conversions have been performed. Ionic charges were selected by the in-flight mass separator MARA and measured at the focal plane in coincidence with the $$4_1^+\rightarrow 2_1^+$$ 4 1 + → 2 1 + $$257\,$$ 257 keV $$\gamma $$ γ -ray transition detected using the JUROGAM 3 spectrometer. The resulting charge-state distributions were analysed using the differential decay curve method (DDCM) framework to obtain a lifetime value of 430(20) ps for the $$2_1^+$$ 2 1 + state. This work builds on a method that combines the charge plunger technique with the DDCM analysis. As an alternative analysis, ions were selected in coincidence with the $$^{178}$$ 178 Pt alpha decay ($$E_{\mathrm {alpha}} = 5.458(5)$$ E alpha = 5.458 ( 5 ) MeV) at the focal plane. Lifetime information was obtained by fitting a two-state Bateman equation to the decay curve with the lifetime of individual states defined by a single quadrupole moment. This yielded a lifetime value of 430(50) ps for the $$2_1^+$$ 2 1 + state, and 54(6) ps for the $$4_1^+$$ 4 1 + state. An analysis method based around the Bateman equation will become especially important when using the charge plunger method for the cases where utilising coincidences between prompt $$\gamma $$ γ rays and recoils is not feasible.

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Section: Ddcm Coincidence Analysismentioning

confidence: 99%

Section: Ddcm Coincidence Analysismentioning

confidence: 99%