Measurement of the neutron-induced fission cross section of ²³⁰Th at the CERN n_TOF facility

Author(s)

, V. Michalopoulou, A. Stamatopoulos, M. Diakaki, A. Tsinganis, R. Vlastou, M. Kokkoris, N. Patronis, Z. Eleme, D. Macina, L. Tassan-Got, N. Colonna, E. Chiaveri, A. Ventura, P. Schillebeeckx, J. Heyse, G. Sibbens, G. Alaerts, A. Borella, A. Moens, D. Vanleeuw, O. Aberle, V. Alcayne, S. Amaducci, J. Andrzejewski, L. Audouin, V. Babiano-Suarez, M. Bacak, M. Barbagallo, S. Bennett, E. Berthoumieux, J. Billowes, D. Bosnar, A. Brown, M. Busso, M. Caamaño, L. Caballero, F. Calviño, M. Calviani, D. Cano-Ott, A. Casanovas, F. Cerutti, G. Cortés, M. A. Cortés-Giraldo, L. Cosentino, S. Cristallo, L. A. Damone, P. J. Davies, M. Dietz, C. Domingo-Pardo, A. Pavlik

Abstract

The neutron-induced fission cross section of Th230 has been measured at the neutron time-of-flight facility n_TOF located at CERN. The experiment was performed at the experimental area EAR-1 with a neutron flight path of 185 m, using Micromegas detectors for the detection of the fission fragments. The Th230(n,f) cross section was determined relative to the U235(n,f) one, covering the energy range from the fission threshold up to 400 MeV. The results from the present work are compared with existing cross-section datasets and the observed discrepancies are discussed and analyzed. Finally, using the code empire 3.2.3 a theoretical study, based on the statistical model, was performed leading to a satisfactory reproduction of the experimental results with the proper tuning of the respective parameters, while for incident neutron energy beyond 200 MeV the fission of Th230 was described by Monte Carlo simulations.

Organisation(s)

Isotope Physics

External organisation(s)

National Technical University of Athens (NTUA), European Organization for Nuclear Research (CERN), Commiss European Communities, Joint Res Ctr, Inst Reference Mat & Measurements, University of Ioannina, IPHC, Istituto Nazionale di Fisica Nucleare (INFN), Roma, SCK-CEN Belgian Nuclear Research Centre, Centro de Investigaciones Energeticas Medioambientales y Tecnológica, INFN Laboratori Nazionali del Sud, Università degli Studi di Catania, University of Lodz, Universitat de València, Technische Universität Wien, Université Paris-Saclay, University of Manchester, University of Zagreb, University of York, Università degli Studi di Perugia, Universidade de Santiago de Compostela (USC), Universitat Politècnica de Catalunya, Universidad de Sevilla, INAF-Osservatorio Astrofisico di Torino, Università degli Studi di Bari, University of Edinburgh

Journal

Physical Review C

Volume

108

No. of pages

15

ISSN

2469-9985

DOI

https://doi.org/10.1103/PhysRevC.108.014616

Publication date

07-2023

Peer reviewed

Yes

Austrian Fields of Science 2012

103014 Nuclear physics

ASJC Scopus subject areas

Nuclear and High Energy Physics

Portal url

https://ucris.univie.ac.at/portal/en/publications/measurement-of-the-neutroninduced-fission-cross-section-of-230th-at-the-cern-ntof-facility(c3b6e5d9-a812-4f5a-be6c-cd39b01c0b91).html