MULTI-2, a 4pi spectrometer for total reaction cross section measurements

0538331 - ÚJF 2021 RIV NL eng J - Journal Article
Siváček, Ivan - Penionzhkevich, Y. E. - Sobolev, Yuri, G. - Stukalov, S. S.
MULTI-2, a 4pi spectrometer for total reaction cross section measurements.
Nuclear Instruments & Methods in Physics Research Section A. Roč. 976, OCT (2020), č. článku 164255. ISSN 0168-9002. E-ISSN 1872-9576
R&D Projects: GA MŠMT LTT18021
Institutional support: RVO:61389005
Keywords : gamma ray multiplicity * radioactive beams * total reaction cross section
OECD category: Nuclear physics
Impact factor: 1.455, year: 2020
Method of publishing: Limited access
https://doi.org/10.1016/j.nima.2020.164255

A detection setup for the direct measurement of the total reaction cross section with exotic nuclei is presented. The setup consists of a multi-detector telescope for beam-particle identification and a 4pi gamma-ray spectrometer for the detection of prompt photons and neutrons accompanying the nuclear reactions. Measurements are based on the modified transmission method and gamma-ray tagging of nuclear reaction events. Registration efficiency and response characteristics of the gamma-ray spectrometer are investigated by Monte Carlo simulations and measurement with Co-60 spectroscopic source. Results show strong a dependence of the registration efficiency on gamma-ray multiplicity, with minimum registration efficiency value of 70%. Evaluation of the registration efficiency for data measured in the total reaction cross section experiments is discussed.
Permanent Link: http://hdl.handle.net/11104/0316145