Speaker
Mrs.
Larisa Korotkova
(National Research Nuclear University MEPhI)
Description
Search for rare cluster configuration in 14С nucleus was carried out in the correlation measurements of stopped pion absorption reaction π¯+ 14C → p + d + Х. For our analysis we took the data obtained in the experiment on the LANL accelerator (Los Alamos, USA) using the multilayer semiconductor spectrometer [1]. The analysis of the reaction was made via previously used method for the search of rare cluster structures in 9Be [2] and 11B [3].
The study of the 2-dimensional energy distribution of the registered particles (p, d) allowed the extraction of two-body (π¯+ 14C → p (d) + 13(12)Ве) and three-body (π¯+ 14C → p + d + 11Li) reaction mechanisms. In the three-body channel we have found the region corresponding to the pion absorption by the intranuclear 3p cluster: π¯ + 3р → p + d, in this case the residual 11Li is a ”spectator”. The momentum of 11Li in the mentioned region is about pLi ≈ 150 MeV, which is typical for the movement of an intranuclear cluster. Thus, we obtained the indication on the presence of rare exotic configuration 11Li + 3р in 14C nucleus.
1. M.G. Gornov et al., Nucl. Inst. and Meth. in Phys. Res. A. 2000. V. 446. P. 461.
2. Yu.B. Gurov et al., JETP Lett. 2006. V. 84. P. 1.
3. L.Yu. Korotkova et al., Bull. RAS Phys. 2014. V. 78. No. 5. P. 355
| Presentation type | Section talk (10+5 min) |
|---|
Primary author
Mrs.
Larisa Korotkova
(National Research Nuclear University MEPhI)
Co-authors
Dr.
Boris Chernyshev
(National Research Nuclear University MEPhI)
Mr.
Roman Pritula
(National Research Nuclear University MEPhI)
Dr.
Sergey Lapushkin
(National Research Nuclear University MEPhI)
Mrs.
Tatyana Schurenkova
(National Research Nuclear University MEPhI)
Prof.
Yuriy Gurov
(National Research Nuclear University MEPhI)
