Eur. Phys. J. A (2016) 52: 113
https://doi.org/10.1140/epja/i2016-16113-3

Special Article - Tools for Experiment and Theory

Study of the cross section determination with the PRISMA spectrometer: The ⁴⁰Ar + ²⁰⁸Pb case

¹ Ruder Bošković Institute, Zagreb, Croatia
² Laboratori Nazionali di Legnaro, INFN, Legnaro, Italy
³ INFN and Università di Padova, Padova, Italy
⁴ INFN and Università di Torino, Torino, Italy
⁵ IFIC, CSIC-Universidad de Valencia, Valencia, Spain
⁶ Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania

^* e-mail: tea.mijatovic@irb.hr

Received: 21 December 2015
Accepted: 29 February 2016
Published online: 26 April 2016

Abstract

The PRISMA spectrometer’s response function was successfully applied to match three angular and magnetic settings over a wide angular range for measurements of quasi-elastic reactions in ⁴⁰Ar + ²⁰⁸Pb . The absolute scale of cross sections has been obtained by using the Rutherford cross section at the forward angles and the information from the energy distributions measured with the spectrometer without and with coincidences with the CLARA -array. The semi-classical model GRAZING has been used to test the unfolding procedure and for comparison with the corrected cross sections.