Study of n-n correlations in d + 2H → p + p + n + n reaction

International Conference on Particle Physics and Astrophysics

物理学;天文学

Konobeevsky, E.^1 ; Kasparov, A.^1 ; Mordovskoy, M.^1 ; Zuyev, S.^1 ; Lebedev, V.^2 ; Spassky, A.^2

Institute for Nuclear Research, Russian Academy of Sciences, 60-letiya Oktyabrya prospekt 7a, Moscow

117312, Russia^1

Skobel'Tsyn Institute of Nuclear Physics, Moscow State University, Moscow

119991, Russia^2

关键词: Break-up reactions;    Deuteron beams;    Fitting procedure;    Intermediate state;    S-systems;    Simulated spectra;    TOF spectrum;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/798/1/012076/pdf
DOI  :  10.1088/1742-6596/798/1/012076

学科分类：天文学(综合)

来源: IOP

【 摘 要 】

A kinematically complete measurement of the four-body breakup reaction d+2H→2pS+2nS→p +p +n +n has been performed at 15 MeV deuteron beam of the SINP MSU. The two protons and neutron were detected at angles close to those of emission of2pSand2nSsystems. The energy of singlet dineutron state was determined by comparing experimental TOF spectrum of breakup neutrons with simulated spectra depending on this energy. A low value Enn= 0.076 ± 0.006 keV obtained by fitting procedure apparently indicates an effective enhancement of nn-interaction in the intermediate state of studied reaction.