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

N. Paul; A. Obertelli; C Bertulani; A. Corsi; P. Doornenbal; J. l. Rodriguez-Sanchez; G. Authelet; H. Baba; D. Calvet; F. Chateau; S. Chen; A. Delbart; J.-M. Gheller; A. Giganon; A. Gillibert; T. Isobe; V. Lapoux; M. Matsushita; S. Momiyama; T. Motobayashi; M. Niikura; H. Otsu; C. Peron; A. Peyaud; E. Pollacco; J.-Y. Rousse; H. Sakurai; C. Santamaria; M. Sasano; Y. Shiga; D. Steppenbeck; S. Takeuchi; R. Taniuchi; T. Uesaka; H. Wang; K. Yoneda; T. Ando; T. Arici; A. Blazhev; F. Browne; A. Bruce; R. Carroll; L. x. Chung; M. Cortés; M. Dewald; B. Ding; Zs Dombradi; F. Flavigny; S. Franchoo; F. Giacoppo; M. Górska; A. Gottardo; K. Hadynska-Klek; Z. Korkulu; S. Koyama; Y. Kubota; A. Jungclaus; J. Lee; M. Lettmann; B Linh; J. Liu; Z. Liu; C. Lizarazo; C. Louchart; R. Lozeva; K. Matsui; T. Miyazaki; K. Moschner; S. Nagamine; N. Nakatsuka; C. Nita; S. Nishimura; C. Nobs; L. Olivier; S. Ota; Z. Patel; Zs Podolyák; M. Rudigier; E. Sahin; T. Saito; C. Shand; P.-A Söderström; I Stefan; T. Sumikama; D. Suzuki; R. Orlandi; V. Vaquero; V. Werner; K. Wimmer; J. Wu; Z. Xu; Zs. Dombradi; Zs. Podolyak; G. Stefan; Zs. Vajta

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

N. Paul ^{1, 2, *} A. Obertelli ^{1, 2, 3} C Bertulani ⁴ A. Corsi ¹ P. Doornenbal ^{2, 5} J. l. Rodriguez-Sanchez ¹ G. Authelet ⁶ H. Baba ² D. Calvet ⁷ F. Chateau ⁷ S. Chen ² A. Delbart ⁸ J.-M. Gheller ⁶ A. Giganon ⁸ A. Gillibert ¹ T. Isobe ² V. Lapoux ¹ M. Matsushita ⁹ S. Momiyama ² T. Motobayashi ² M. Niikura ¹⁰ H. Otsu ² C. Peron ¹¹ A. Peyaud ⁷ E. Pollacco ¹ J.-Y. Rousse ¹¹ H. Sakurai ² C. Santamaria ¹ M. Sasano ² Y. Shiga ¹² D. Steppenbeck ⁹ S. Takeuchi ² R. Taniuchi ² T. Uesaka ² H. Wang ² K. Yoneda ² T. Ando ² T. Arici ⁵ A. Blazhev ¹³ F. Browne ¹⁴ A. Bruce ¹⁴ R. Carroll ¹⁵ L. x. Chung ¹⁶ M. Cortés ² M. Dewald ¹⁷ B. Ding ¹⁸ Zs Dombradi ¹⁹ F. Flavigny ²⁰ S. Franchoo ²⁰ F. Giacoppo ²¹ M. Górska ⁵ A. Gottardo ²⁰ K. Hadynska-Klek ²¹ Z. Korkulu ²² S. Koyama ² Y. Kubota ² A. Jungclaus ²³ J. Lee ²⁴ M. Lettmann ³ B Linh ¹⁶ J. Liu ²⁴ Z. Liu ¹⁸ C. Lizarazo ⁵ C. Louchart ³ R. Lozeva ²⁵ K. Matsui ² T. Miyazaki ² K. Moschner ¹⁷ S. Nagamine ² N. Nakatsuka ²⁶ C. Nita ²⁷ S. Nishimura ² C. Nobs ¹⁴ L. Olivier ²⁰ S. Ota ⁹ Z. Patel ¹⁵ Zs Podolyák ¹⁵ M. Rudigier ¹⁵ E. Sahin ²⁸ T. Saito ² C. Shand ¹⁵ P.-A Söderström ²⁹ I Stefan ²⁰ T. Sumikama ³⁰ D. Suzuki ² R. Orlandi ³¹ V. Vaquero ²³ V. Werner ³ K. Wimmer ³² J. Wu ² Z. Xu ²⁴ Zs. Dombradi ²² Zs. Podolyak ¹⁵ G. Stefan ²⁰ Zs. Vajta ²²

* Corresponding author

1 DPHN - Département de Physique Nucléaire (ex SPhN)

2 RIKEN Nishina Center

3 TU Darmstadt - Technische Universität Darmstadt

4 Texas A&M University-Commerce, United States

5 GSI - Helmholtz Centre for Heavy Ion Research

6 IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers

7 DEDI - Département d'Electronique, des Détecteurs et d'Informatique (ex SEDI)

8 DAPNIA - Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée

9 CNS - Centre for Nuclear Study, University of Tokyo

10 Department of Applied Physics, The University of Tokyo

11 DIS - Département d'Ingénierie des Systèmes (ex SIS)

12 Rikkyo University [Tokyo]

13 Universität zu Köln

14 Brighton - School of Computing, Engineering and Mathematics

15 UNIS - University of Surrey

16 Institute for Nuclear Science and Technique, VINATOM

17 Institut für Kernphysik - Universität zu Köln

18 IMP - Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China

19 ATOMKI - Institute of Nuclear Research

20 IPNO - Institut de Physique Nucléaire d'Orsay

21 UiO - University of Oslo

22 ATOMKI - Institute of Nuclear Research of the Hungarian Academy of Sciences

23 CSIC - Spanish National Research Council [Madrid]

24 CUHK - City University of Hong Kong [Hong Kong]

25 CSNSM - Centre de Sciences Nucléaires et de Sciences de la Matière

26 Kyoto University [Kyoto]

27 IFIN-HH

28 Oslo University Hospital [Oslo]

29 RIKEN Nishina Center for Accelerator Based Science

30 Tohoku University [Sendai]

31 JAEA - Japan Atomic Energy Agency

32 Department of Physics, University of Tokyo, Bunkyo, Tokyo

Abstract : Fifty-five inclusive single nucleon-removal cross sections from medium mass neutron-rich nuclei impinging on a hydrogen target at $\sim$250 MeV=nucleon are 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 as 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 semimicroscopic model predictions, highlighting the enhanced role of lowlying level densities in nucleon-removal cross sections from loosely bound nuclei

Document type :

Journal articles

Domain :

Physics [physics]

Physics [physics] / Nuclear Experiment [nucl-ex]

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Submitted on : Tuesday, May 7, 2019 - 12:09:51 PM
Last modification on : Thursday, May 9, 2019 - 1:19:25 AM

PhysRevLett.122.162503.pdf

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

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

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