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Prominence of Pairing in Inclusive (p,2p) and (p,pn) Cross Sections from Neutron-Rich Nuclei

Paul, N, Obertelli, A, Bertulani, C, Corsi, A, Doornebal, P, Rodriguez-Sanchez, J. L., Authelet, G, Baba, H, Calvet, D, Chateau, F , Chen, S, Delbart, A, Gheller, J. M, Giganon, A, Gilibert, A, Isobe, T, Lapoux, V, Matsushita, M, Momiyama, S, Motobayashi, T, Niikura, M, Otsu, H, Peron, C, Peyaud, A, Pollaco, E. C, Rousse, J. Y, Sakurai, H, Santamaria, C, Sasano, M, Shiga, Y, Steppenbeck, D, Takeuchi, S, Taniuchi, R, Uesaka, T, Wang, H, Yoneda, K, Ando, T, Arici, T, Blazhev, A, Browne, F, Bruce, A. M., Carroll, Richard, Chung, L. X., Cortes, M. L, Dewald, M, Ding, B, Dombradi, Zs, Flavigny, F, Franchoo, S, Giacoppo, F, Gorska, M, Gottardo, A, Hadynska-Klek, Katarzyna, Korkulu, Z, Koyama, S, Kubota, Y, Jungclaus, A, Lee, J, Lettmann, M, Linh, B.D, Liu, J, Liu, Z, Lizarazo, C, Louchart, C, Lozeva, R, Matsui, K, Miyazaki, T, Moschner, K, Nagamine, S, Nakatsuka, N, Nita, C, Nishimura, S, Nobs, C.R, Olivier, L, Ota, S, Patel, Z, Podolyak, Zsolt, Rudigier, Matthias, Sahin, E, Saito, T. Y, Shand, Callum, Soderstrom, P. A, Stefan, I. G., Sumikama, T, Suzuki, D, Orlandi, R, Vaquero, V, Vajta, Zs, Werner, V, Wimmer, K, Wu, J and Xu, Z (2019) Prominence of Pairing in Inclusive (p,2p) and (p,pn) Cross Sections from Neutron-Rich Nuclei Physical Review Letters.

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Abstract

Fifty-five inclusive single nucleon removal cross sections from medium mass neutron-rich nuclei impinging on a hydrogen target at � 250 MeV/nucleon were measured at the RIKEN Radioactive Isotope Beam Factory. Systematically higher cross sections are found for proton removal from nuclei with an even number of protons compared to odd-proton number projectiles for a given neutron separation energy. Neutron removal cross sections display no even-odd splitting contrary to nuclear cascade model predictions. Both effects are understood through simple considerations of neutron separation energies and bound state level densities originating in pairing correlations in the daughter nuclei. These conclusions are supported by comparison with semi-microscopic model predictions,highlighting the enhanced role of low-lying level densities in nucleon removal cross sections from loosely-bound nuclei.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Physics
Authors :
NameEmailORCID
Paul, N
Obertelli, A
Bertulani, C
Corsi, A
Doornebal, P
Rodriguez-Sanchez, J. L.
Authelet, G
Baba, H
Calvet, D
Chateau, F
Chen, S
Delbart, A
Gheller, J. M
Giganon, A
Gilibert, A
Isobe, T
Lapoux, V
Matsushita, M
Momiyama, S
Motobayashi, T
Niikura, M
Otsu, H
Peron, C
Peyaud, A
Pollaco, E. C
Rousse, J. Y
Sakurai, H
Santamaria, C
Sasano, M
Shiga, Y
Steppenbeck, D
Takeuchi, S
Taniuchi, R
Uesaka, T
Wang, H
Yoneda, K
Ando, T
Arici, T
Blazhev, A
Browne, F
Bruce, A. M.
Carroll, Richardrichard.carroll@surrey.ac.uk
Chung, L. X.
Cortes, M. L
Dewald, M
Ding, B
Dombradi, Zs
Flavigny, F
Franchoo, S
Giacoppo, F
Gorska, M
Gottardo, A
Hadynska-Klek, Katarzynak.hadynska-klek@surrey.ac.uk
Korkulu, Z
Koyama, S
Kubota, Y
Jungclaus, A
Lee, J
Lettmann, M
Linh, B.D
Liu, J
Liu, Z
Lizarazo, C
Louchart, C
Lozeva, R
Matsui, K
Miyazaki, T
Moschner, K
Nagamine, S
Nakatsuka, N
Nita, C
Nishimura, S
Nobs, C.R
Olivier, L
Ota, S
Patel, Z
Podolyak, ZsoltZ.Podolyak@surrey.ac.uk
Rudigier, Matthiasm.rudigier@surrey.ac.uk
Sahin, E
Saito, T. Y
Shand, Callumc.shand@surrey.ac.uk
Soderstrom, P. A
Stefan, I. G.
Sumikama, T
Suzuki, D
Orlandi, R
Vaquero, V
Vajta, Zs
Werner, V
Wimmer, K
Wu, J
Xu, Z
Date : 12 March 2019
Copyright Disclaimer : © 2019 American Physical Society
Depositing User : Charlene King
Date Deposited : 05 Apr 2019 14:53
Last Modified : 05 Apr 2019 14:53
URI: http://epubs.surrey.ac.uk/id/eprint/850983

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