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

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 sequen...

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Veröffentlicht in:	Physical review letters 2020-07, Vol.125 (1), p.1-012501, Article 012501
Hauptverfasser:	Frotscher, A., Gómez-Ramos, M., Obertelli, A., Doornenbal, P., Authelet, G., Baba, H., Calvet, D., Château, F., Chen, S., Corsi, A., Delbart, A., Gheller, J.-M., Giganon, A., Gillibert, A., Isobe, T., Lapoux, V., Matsushita, M., Momiyama, S., Motobayashi, T., Niikura, M., Otsu, H., Paul, N., Péron, C., Peyaud, A., Pollacco, E. C., Roussé, J.-Y., Sakurai, H., Santamaria, C., Sasano, M., Shiga, Y., Shimizu, N., Steppenbeck, D., Takeuchi, S., Taniuchi, R., Uesaka, T., Wang, H., Yoneda, K., Ando, T., Arici, T., Blazhev, A., Browne, F., Bruce, A. M., Carroll, R., Chung, L. X., Cortés, M. L., Dewald, M., Ding, B., Dombradi, Zs, Flavigny, F., Franchoo, S., Giacoppo, F., Górska, M., Gottardo, A., Hadyńska-Klęk, K., 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., Podolyák, Zs, Rudigier, M., Sahin, E., Saito, T. Y., Shand, C., Söderström, P.-A., Stefan, I. G., Sumikama, T., Suzuki, D., Orlandi, R., Vaquero, V., Vajta, Zs, Werner, V., Wimmer, K., Wu, J., Xu, Z.
Format:	Artikel
Sprache:	eng
Schlagworte:	Angular distribution Inverse kinematics Kinematics Nuclear cross sections Nuclear Experiment Nuclei (nuclear physics) Nucleons Particle collisions Physics Projectiles Protons
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Zusammenfassung:	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.
ISSN:	0031-9007 1079-7114
DOI:	10.1103/PhysRevLett.125.012501