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Probing the Z = 6 spin-orbit shell gap with (p,2p) quasi-free scattering reactions

Syndikus, I. ; Petri, M. ; Macchiavelli, A. O. ; Paschalis, S. ; Bertulani, C. A. ; Aumann, T. ; Alvarez-Pol, H. ; Atar, L. ; Beceiro-Novo, S. and Benlliure, J. , et al. (2020) In Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 809.
Abstract

The evolution of the traditional nuclear magic numbers away from the valley of stability is an active field of research. Experimental efforts focus on providing key spectroscopic information that will shed light into the structure of exotic nuclei and understanding the driving mechanism behind the shell evolution. In this work, we investigate the Z=6 spin-orbit shell gap towards the neutron dripline. To do so, we employed NA(p,2p)CA−1 quasi-free scattering reactions to measure the proton component of the 21+ state of 16,18,20C. The experimental findings support the notion of a moderate reduction of the proton 1p1/2−1p3/2 spin-orbit splitting, at variance to recent claims for a... (More)

The evolution of the traditional nuclear magic numbers away from the valley of stability is an active field of research. Experimental efforts focus on providing key spectroscopic information that will shed light into the structure of exotic nuclei and understanding the driving mechanism behind the shell evolution. In this work, we investigate the Z=6 spin-orbit shell gap towards the neutron dripline. To do so, we employed NA(p,2p)CA−1 quasi-free scattering reactions to measure the proton component of the 21+ state of 16,18,20C. The experimental findings support the notion of a moderate reduction of the proton 1p1/2−1p3/2 spin-orbit splitting, at variance to recent claims for a prevalent Z=6 magic number towards the neutron dripline.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Exotic nuclei, Magic numbers, Quasi-free scattering reactions, Shell evolution, Spin-orbit splitting, Tensor force
in
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
volume
809
article number
135748
publisher
Elsevier
external identifiers
  • scopus:85091214162
ISSN
0370-2693
DOI
10.1016/j.physletb.2020.135748
language
English
LU publication?
yes
id
c5f56b4d-56d3-4dcc-a0fc-756f9ab48e23
date added to LUP
2020-10-03 04:52:35
date last changed
2020-10-12 16:40:33
@article{c5f56b4d-56d3-4dcc-a0fc-756f9ab48e23,
  abstract     = {<p>The evolution of the traditional nuclear magic numbers away from the valley of stability is an active field of research. Experimental efforts focus on providing key spectroscopic information that will shed light into the structure of exotic nuclei and understanding the driving mechanism behind the shell evolution. In this work, we investigate the Z=6 spin-orbit shell gap towards the neutron dripline. To do so, we employed NA(p,2p)CA−1 quasi-free scattering reactions to measure the proton component of the 2<sub>1</sub><sup>+</sup> state of <sup>16,18,20</sup>C. The experimental findings support the notion of a moderate reduction of the proton 1p<sub>1/2</sub>−1p<sub>3/2</sub> spin-orbit splitting, at variance to recent claims for a prevalent Z=6 magic number towards the neutron dripline.</p>},
  author       = {Syndikus, I. and Petri, M. and Macchiavelli, A. O. and Paschalis, S. and Bertulani, C. A. and Aumann, T. and Alvarez-Pol, H. and Atar, L. and Beceiro-Novo, S. and Benlliure, J. and Boillos, J. M. and Boretzky, K. and Borge, M. J.G. and Brown, B. A. and Caamaño, M. and Caesar, C. and Casarejos, E. and Catford, W. and Cederkall, J. and Chakraborty, S. and Chulkov, L. V. and Cortina-Gil, D. and Cravo, E. and Crespo, R. and Datta Pramanik, U. and Dillmann, I. and Díaz Fernández, P. and Elekes, Z. and Enders, J. and Farinon, F. and Fraile, L. M. and Galaviz, D. and Geissel, H. and Gernhäuser, R. and Golubev, P. and Göbel, K. and Heil, M. and Heine, M. and Heinz, A. and Henriques, A. and Holl, M. and Johansson, H. T. and Jonson, B. and Kalantar-Nayestanaki, N. and Kanungo, R. and Kelic-Heil, A. and Kröll, T. and Nilsson, T. and Rahaman, A. and Wilson, G. L.},
  issn         = {0370-2693},
  language     = {eng},
  month        = {10},
  publisher    = {Elsevier},
  series       = {Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics},
  title        = {Probing the Z = 6 spin-orbit shell gap with (p,2p) quasi-free scattering reactions},
  url          = {http://dx.doi.org/10.1016/j.physletb.2020.135748},
  doi          = {10.1016/j.physletb.2020.135748},
  volume       = {809},
  year         = {2020},
}