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Sequential Nature of $(p,3p)$ Two-Proton Knockout from Neutron-Rich Nuclei

Abstract : Twenty-one two-proton knockout (p,3p) cross sections were measured from neutron-rich nuclei at ∼250  MeV/nucleon in inverse kinematics. The angular distribution of the three emitted protons was determined for the first time, demonstrating that the (p,3p) kinematics are consistent with two sequential proton-proton collisions within the projectile nucleus. Ratios of (p,3p) over (p,2p) inclusive cross sections follow the trend of other many-nucleon removal reactions, further reinforcing the sequential nature of (p,3p) in neutron-rich nuclei.
Keywords : Nuclear Physics
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Submitted on : Tuesday, November 17, 2020 - 10:06:15 AM
Last modification on : Wednesday, March 3, 2021 - 1:06:34 AM
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A. Frotscher, M. Gómez-Ramos, A. Obertelli, P. Doornenbal, G. Authelet, et al.. Sequential Nature of $(p,3p)$ Two-Proton Knockout from Neutron-Rich Nuclei. Phys.Rev.Lett., 2020, 125 (1), pp.012501. ⟨10.1103/PhysRevLett.125.012501⟩. ⟨hal-02905950⟩



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