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Study of α clusters in atomic nuclei through nuclear break-up

Lefebvre, L, Scarpaci, JA, Assié, M, Blumenfeld, Y, Matta, A, Vandebrouck, M, Morfouace, P, Zerguerras, T, Ancelin, S, Beaumel, D , Chabot, M, DeSereville, N, Franchoo, S, Hammache, F, Mavilla, G, Rindel, E, Rosier, P, Lacroix, D, Sorlin, O, Bastin, B, Gangnant, P, Grinyer, GF, Houarner, C, Libin, JF, Raine, B, Saillant, F, Scamps, G, Angélique, JC, Delaunay, F, Gibelin, J, Leblond, S, Gillibert, A, Nalpas, L, Roussel-Chomaz, P, Cappuzzello, F, Carbone, D and Cavallaro, M (2013) Study of α clusters in atomic nuclei through nuclear break-up Proceedings of Science.

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Nuclei are complex self-bound systems formed by nucleons. Conjointly to a mean-field picture in which nucleons can be regarded as independent particles, few nucleons might self-organize into compact objects, called clusters, inside the nucleus. It is theoretically predicted that it should manifest itself most strikingly for N = Z nuclei close to the emission thresholds and has been studied extensively in this region. In this Proceedings of Science, we propose to study α-clusterization in the ground state of 40Ca. We have studied the nuclear break-up of 40Ca when the 40Ar projectile passes by. If α clusters are preformed in 40Ca, they will be attracted by the nuclear potential of the projectile and be emitted on the same side. The experiment was performed at GANIL at 35 A.MeV using the SPEG spectrometer to detect the heavy projectile with accurate resolution. The MUST2 Silicon detectors were placed around the target to measure the emitted α and the EXL calorimeter prototype was used to identify the γ rays from the decay of the residual 36Ar. A theoretical approach based on Time-Dependent Schrödinger Equation (TDSE) theory has been used to reproduce some experimental results like angular distributions. First results like excitation energy spectra or angular distributions compared to TDSE theory will be discussed. © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.

Item Type: Article
Divisions : Surrey research (other units)
Authors :
Lefebvre, L
Scarpaci, JA
Assié, M
Blumenfeld, Y
Vandebrouck, M
Morfouace, P
Zerguerras, T
Ancelin, S
Beaumel, D
Chabot, M
DeSereville, N
Franchoo, S
Hammache, F
Mavilla, G
Rindel, E
Rosier, P
Lacroix, D
Sorlin, O
Bastin, B
Gangnant, P
Grinyer, GF
Houarner, C
Libin, JF
Raine, B
Saillant, F
Scamps, G
Angélique, JC
Delaunay, F
Gibelin, J
Leblond, S
Gillibert, A
Nalpas, L
Roussel-Chomaz, P
Cappuzzello, F
Carbone, D
Cavallaro, M
Date : 18 November 2013
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 13:07
Last Modified : 24 Jan 2020 23:28

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