_1hn1_1hn0_1hn8Sn studied with intermediate-energy Coulomb excitation [Elektronische Ressource] / Leontina Adriana Banu

108Sn studied with intermediate-energy CoulombexcitationDissertation zur Erlangung des Grades“Doktorder Naturwissenschaften”am Fachbereich Physikder Johannes Gutenberg-Universit¨atin MainzLeontina Adriana Banuborn in Zimnicea, RomaniaMainz, den 2005Tag der mu¨ndlichen Pru¨fung: 21.07.2005Abstract108In this doctoral thesis the unstable neutron-deficient Sn isotope has been studiedin inverse kinematics by intermediate-energy Coulomb excitation. Previously the+method has been applied to measure the energy of the first excited 2 state and its108E2 decay rate in nuclei withZ <30 only, Sn being the highest-Z nucleus studiedwith this method. The purpose of the in-beam gamma-spectroscopy measurementdescribed in the thesis was to measure the unknown reduced transition probability+ + 108 2 2B(E2;0 → 2 ) in Sn. The extracted B(E2) value of 0.230 (57) e b has beeng.s. 1112determined relative to the known value in the stable Sn isotope.The experiment has been carried out at GSI with the newly RISING/FRS experi-mental set-up, developed within the framework of the RISING project. Secondary108 112beams of interest ( Sn, Sn) at energies of around 150 MeV/nucleon impinged197 2on a Au target of 386 mg/cm thickness. The projectile fragments were selectedand identified using the fragment separator (FRS) and its associated particle detec-tors.