UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS

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2022-08-12 13:54

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Conference: Bucharest University Faculty of Physics 2016 Meeting


Section: Nuclear and Elementary Particles Physics


Title:
Study of the 156Gd nucleus by the (p,t) transfer reaction


Authors:
Alina-Nicoleta IONESCU (1,2), Sorin Gabriel PASCU (2)


Affiliation:
(1) University from Bucharest, Faculty of Physics, 405 Atomistilor St., 077125 Magurele, ILFOV, POB MG-11, Romania

(2) Horia Hulubei National Institute for Physics and Nuclear Engineering (IFIN-HH), 30 Reactorului St., 077125 Magurele, ILFOV, POB MG-6, Romania


E-mail
ionescu_alina98@yahoo.com


Keywords:
rare-earth region, Q3D spectrometer, (p,t) transfer reaction, angular distributions, 0+ excited states, DWBA


Abstract:
The rare-earth region represents an ideal part of the nuclear chart for the study of collective motion and some of the most important excitations in the nuclei from this region are the 0+ excited states. These excitations are complex and it is difficult for theoretical models to describe them. For providing complete spectroscopic information for the low spin states in even-even nuclei is used the (p,t) transfer reaction with which the 0+ excited states are well revealed. The experimental results presented here were obtained by measuring the angular distributions with good energy resolution, with Q3D spectrometer for the direct two-neutron transfer reaction 158Gd(p,t)156Gd at an incident energy of 25 MeV. We found nine 0+ excited states from which four are new and the other five were confirmed. The results of this experiment, like new observed levels after the analysis of spectra and the confirmation of the existence of many states previously known, were obtained by comparing the experimental angular distributions and the calculations made using Distorted Wave Born Approximation (DWBA).


References:

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