Counting rate measurements for lifetime experiments using the RDDS method with the new generation γ-ray array AGATA

A Goasduff,J.J Valiente-Dobón,S Lunardi,F Haas,A Gadea,G De Angelis,D Bazzacco,S Courtin,E Farnea,A Gottardo,C Michelagnoli,D Mengoni,D.R Napoli,F Recchia,E Sahin,C.A Ur

doi:10.1016/j.nima.2014.05.016

Counting rate measurements for lifetime experiments using the RDDS method with the new generation γ-ray array AGATA

A Goasduff, J.J Valiente-Dobón + Show 14 more

https://doi.org/10.1016/j.nima.2014.05.016

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Journal: Nuclear Inst. and Methods in Physics Research, A	Publication Date: May 14, 2014
Citations: 1

Affiliation: University of Strasbourg, French National Centre for Scientific Research, University of Paris-Sud, Institut National de Physique Nucléaire et de Physique des Particules, Institut Polytechnique de Paris, Legnaro National Laboratories, National Institute for Nuclear Physics, INFN Sezione di Padova, University of Padua, University of Valencia, Instituto de Física Corpuscular, University of the West of Scotland

#Recoil Distance Doppler Shift Method #Recoil Distance Doppler Shift + Show 8 more

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Abstract

The differential Recoil Distance Doppler Shift (RDDS) method after multinucleon transfer (MNT) reactions to measure lifetimes of excited states in neutron-rich nuclei requires the use of a thick energy degrader for the recoiling ejectiles that are then detected in a spectrometer. This type of measurements greatly benefits from the use of the new generation segmented γ-ray detectors, such as the AGATA demonstrator which offers unprecedented energy and angular resolutions. In order to make an optimized choice of the material and the thickness of the degrader for lifetime measurements using the RDDS method after MNT, an experiment has been performed with the AGATA demonstrator. Counting rate measurements for different degraders are presented.

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