A4 Article in conference proceedings
Fission and Quasi-Fission Dynamics Near the Coulomb Barrier : γ Rays as Probe for their Timescale (2020)


Pulcini, A.; Vardaci, E.; Kozulin, E. M.; Ashaduzzaman, M.; Borcea, C.; Bracco, A.; Brambilla, S.; Calinescu, S.; Camera, F.; Ciemala, M.; Davide, F.; de Canditiis, B.; Di Nitto, A.; Dmitriev, S. et al. (2020). Fission and Quasi-Fission Dynamics Near the Coulomb Barrier : γ Rays as Probe for their Timescale. In Penionzhkevich, Yu E.; Sobolev, Yu G. (Eds.) EXON 2018 : Proceedings of the International Symposium on Exotic Nuclei. World Scientific, 330-337. DOI: 10.1142/9789811209451_0045


JYU authors or editors


Publication details

All authors or editors: Pulcini, A.; Vardaci, E.; Kozulin, E. M.; Ashaduzzaman, M.; Borcea, C.; Bracco, A.; Brambilla, S.; Calinescu, S.; Camera, F.; Ciemala, M.; et al.

Parent publication: EXON 2018 : Proceedings of the International Symposium on Exotic Nuclei

Parent publication editors: Penionzhkevich, Yu E.; Sobolev, Yu G.

Place and date of conference: Petrozavodsk, Russia, 10.-15.9.2018

ISBN: 978-981-120-944-4

eISBN: 978-981-120-946-8

Publication year: 2020

Pages range: 330-337

Number of pages in the book: 604

Publisher: World Scientific

Publication country: Singapore

Publication language: English

DOI: http://doi.org/10.1142/9789811209451_0045

Open Access: Publication channel is not openly available


Abstract

The overlap in the mass symmetric region of the reaction products from fusion-fission and quasi-fission complicates the assignment of symmetric events to complete fusion on the basis of the mass distribution alone. Additional observables, besides mass distribution, should be used. The method proposed here relies on the fact that fusion-fission and quasifission are characterized by a different timescale. Within this framework we performed a detailed study to find out if timescales can be probed via angular momentum as measured via γ rays multiplicity. The proof of principle was carried out by measuring the γ rays in coincidence with two fragments in the reaction 32S + 197Au at beam energy near the Coulomb barrier. The experiment has been performed at the Tandem ALTO facility at IPN Orsay using a detection setup consisting of ORGAM and PARIS γ detector arrays coupled with the CORSET time-of-flight spectrometer. Preliminary results on the sensitivity of this method to distinguish reaction channels with different dynamics are discusses.


Keywords: nuclear physics; nuclear reactions; nuclear fusion; nuclear fission

Free keywords: nuclear reactions; fusion-fission; quasi-fission; prompt gamma-rays


Contributing organizations


Ministry reporting: Yes

Reporting Year: 2020

Preliminary JUFO rating: 1


Last updated on 2020-09-07 at 23:11