학술논문
Surface localization of the dineutron in $^{11}$Li
Document Type
Working Paper
Author
Kubota, Y.; Corsi, A.; Authelet, G.; Baba, H.; Caesar, C.; Calvet, D.; Delbart, A.; Dozono, M.; Feng, J.; Flavigny, F.; Gheller, J. -M.; Gibelin, J.; Giganon, A.; Gillibert, A.; Hasegawa, K.; Isobe, T.; Kanaya, Y.; Kawakami, S.; Kim, D.; Kikuchi, Y.; Kiyokawa, Y.; Kobayashi, M.; Kobayashi, N.; Kobayashi, T.; Kondo, Y.; Korkulu, Z.; Koyama, S.; Lapoux, V.; Maeda, Y.; Marqués, F. M.; Motobayashi, T.; Miyazaki, T.; Nakamura, T.; Nakatsuka, N.; Nishio, Y.; Obertelli, A.; Ogata, K.; Ohkura, A.; Orr, N. A.; Ota, S.; Otsu, H.; Ozaki, T.; Panin, V.; Paschalis, S.; Pollacco, E. C.; Reichert, S.; Roussé, J. -Y.; Saito, A. T.; Sakaguchi, S.; Sako, M.; Santamaria, C.; Sasano, M.; Sato, H.; Shikata, M.; Shimizu, Y.; Shindo, Y.; Stuhl, L.; Sumikama, T.; Sun, Y. L.; Tabata, M.; Togano, Y.; Tsubota, J.; Yang, Z. H.; Yasuda, J.; Yoneda, K.; Zenihiro, J.; Uesaka, T.
Source
Phys. Rev. Lett. 125 (2020) 252501
Subject
Language
Abstract
The formation of a dineutron in the nucleus $^{11}$Li is found to be localized to the surface region. The experiment measured the intrinsic momentum of the struck neutron in $^{11}$Li via the $(p,pn)$ knockout reaction at 246 MeV/nucleon. The correlation angle between the two neutrons is, for the first time, measured as a function of the intrinsic neutron momentum. A comparison with reaction calculations reveals the localization of the dineutron at $r\sim3.6$ fm. The results also support the density dependence of dineutron formation as deduced from Hartree-Fock-Bogoliubov calculations for nuclear matter.
Comment: 19 pages, 4 figures. Accepted for Physical Review Letters
Comment: 19 pages, 4 figures. Accepted for Physical Review Letters