New approach to the analysis of total absorption spectra

Algorithms for the analysis of -decay total absorption spectra

“…In actual spectrometers the response of the spectrometer to each individual quantum of the cascade has to be taken into consideration. In a previous publication [1], it was shown that the relation between the measured spectrum and level feeding distribution can be represented by…”

“…The Total Absorption g-Ray Spectroscopy (TAGS) technique applied to b-decay studies aims at the determination of the probability of decay to levels in the daughter nucleus from the detection of the de-exciting g-ray cascades using a large 4p scintillation crystal. The distribution of the decay strength as a function of excitation energy in the final nucleus is a fundamental quantity in the understanding of the nuclear structure as well as being of interest in several applications ranging from nuclear technology to nuclear astrophysics [1]. We have shown [2] the superiority of the TAGS technique when compared to the more conventional high-resolution spectroscopy with Ge detectors which can lead to very large systematic errors for nuclei far from the stability.…”

“…We explore this question in relation to the method of solution of the inverse problem in the following sections. In previous publications we have investigated aspects of this question relating to sources of possible experimental error namely, the knowledge of the spectrometer response energy distribution [1] and a particular form of background represented by signal pileup [4].…”

Status of ion beam data analysis and simulation software

“…Two low energy events are lost, replaced by one event at an energy that depends on the time lag between the two ions and the electronic pulse shape; the observed energy lying between that of the first event and the summed energy of both ions 148,149 . This effect is proportional to the count rate, and hence important for high current or high Z measurements.…”

Beta-strength and anti-neutrino spectra from total absorption spectroscopy of a decay chain 142Cs→142Ba→142La

“…The evaluation method is based primarily on the techniques applied in the analysis of other total absorption spectrometers spectra, see e.g., [9][10][11]. However, our analysis is profiting from the increased efficiency and high segmentation of MTAS [2,3,8].…”