Quasifree (p, 2p) Reactions on Oxygen Isotopes: Observation of Isospin Independence of the Reduced Single-Particle Strength



Atar, L, Paschalis, S, Barbieri, C, Bertulani, CA, Diaz Fernandez, P, Holl, M, Najafi, MA, Panin, V, Alvarez-Pol, H, Aumann, T
et al (show 92 more authors) (2018) Quasifree (p, 2p) Reactions on Oxygen Isotopes: Observation of Isospin Independence of the Reduced Single-Particle Strength. PHYSICAL REVIEW LETTERS, 120 (5).

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Abstract

Quasifree one-proton knockout reactions have been employed in inverse kinematics for a systematic study of the structure of stable and exotic oxygen isotopes at the R3B/LAND setup with incident beam energies in the range of 300–450  MeV/u. The oxygen isotopic chain offers a large variation of separation energies that allows for a quantitative understanding of single-particle strength with changing isospin asymmetry. Quasifree knockout reactions provide a complementary approach to intermediate-energy one-nucleon removal reactions. Inclusive cross sections for quasifree knockout reactions of the type AO(p,2p)A−1N have been determined and compared to calculations based on the eikonal reaction theory. The reduction factors for the single-particle strength with respect to the independent-particle model were obtained and compared to state-of-the-art ab initio predictions. The results do not show any significant dependence on proton-neutron asymmetry.

Item Type: Article
Uncontrolled Keywords: Direct reactions, Nuclear reactions, Nuclear structure & decays, Nucleon induced nuclear reactions, Shell model, Spectroscopic factors & electromagnetic moments
Depositing User: Symplectic Admin
Date Deposited: 15 Mar 2018 14:38
Last Modified: 27 Nov 2020 10:36
DOI: 10.1103/PhysRevLett.120.052501
Open Access URL: https://doi.org/10.1103/PhysRevLett.120.052501
Related URLs:
URI: http://livrepository.liverpool.ac.uk/id/eprint/3019068