Abstract
It is shown that the Differential decay curve method applied to analyze coincidence Doppler-shift attenuation lifetime measurements with a gate on the shifted component of a directly feeding feeding transition is characterized by stable results within scaling variations of the stopping powers of up to 15% at least. This is due to cancellation in the formula used for the lifetime determination while when using the traditional data analysis methods the imprecision in the stopping powers cannot be surrounded.
Highlights
Robustness of the analysis of Doppler-shift attenuation lifetime measurements according to the coincidence differential decay curve method with respect to class of uncertainties in the stopping powers
We consider some features of Differential decay curve method (DDCM)[3,4] in coincidence mode[5] related to the use of a ratio for the lifetime determination which may lead to useful cancellations
A gate can be set in a γ-γ coincidence matrix on well defined shifted portion of transition B to generate the line shape corresponding to the transition A which has to be analyzed
Summary
Robustness of the analysis of Dopplershift attenuation lifetime measurements according to the coincidence differential decay curve method with respect to class of uncertainties in the stopping powers. The emission of γ-rays during this time interval leads, due to the ever decreasing Doppler-shift effect, to the observation of a line-shape whose details are sensitive with respect to the level lifetime τ.
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