Unit:
Department of PhysicsLibrary of the School of Science
Author:
Efstathiou Margarita
Supervisors info:
Μερτζιμέκης Θεόδωρος, Αναπληρωτής Καθηγητής, Τμήμα Φυσικής, Εθνικό Καποδιστριακό Πανεπιστήμιο Αθηνών
Original Title:
Φασματοσκοπία γ στα ισότοπα 174,176Yb
Translated title:
Gamma spectroscopy of 174,176Yb
Summary:
This work concerns the 2n-transfer reactions 172Yb(18O,16O)174Yb and 174Yb(18O,16O)176Yb.
The purpose of this work was to study the spectroscopy of the isotopes 174Yb and 176Yb,
to build the angular distribution in E2 transitions and to calculate the cross sections for
the both reactions.
The measurements were carried out at the Horia Hulubei National Institute of Physics
and Nuclear Engineering (IFIN-HH) at Romania. The detection system of ROSPHERE was
used for the record of gamma spectroscopy. We used a natural Yb target, which was
irradiated with four different beam energies E=69,72,73,74 MeV. Gamma spectra were
measured at three different angles in order to build the angular distribution diagrams.
Also, we calculated the cross sections of the two reactions firstly with a reduction method
experimentally and secondly with the microscopic model which is named GRAZING theoretically.
In this work, both of the two isotopes studies belong to the group of the well
deformed nuclei and they have important rotational properties. The fact that the literature
is really deficient in this kind of isotopes was the motivation for conduction the experiment
on which this work based.
Main subject category:
Science
Keywords:
Gamma spectroscopy, Nuclear experimental physics, Angular distributions, Cross sections, Ytterbium (Yb) isotopes
