论文标题

在$^{11} $ li中的Dinutron的表面定位

Surface localization of the dineutron in $^{11}$Li

论文作者

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.

论文摘要

发现在核$^{11} $ li中形成了多核的形成,被发现位于表面区域。该实验通过$(p,p,pn)$敲除反应在246 meV/nucleon中测量了$^{11} $ li中中子的内在动量。两个中子之间的相关角度首次是根据内在中子动量的函数来测量的。与反应计算的比较揭示了Dinutron在$ r \ sim3.6 $ fm处的定位。该结果还支持核物质中的Hartree-fock-Bogoliubov计算得出的Dinutron形成的密度依赖性。

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.

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