Speaker
Tatiana Leonova
Description
Level structure of heavy helium isotope $^8$He is studied in the reactions of stopped pion absorption $^9$Be($\pi^-,p$)X, $^{10}$B($\pi^-,pp$)X, $^{11}$B($\pi^-,pd$)X, $^{12}$C($\pi^-,p^3$Нe)X, $^{14}$C($\pi^-,d^4$Нe)X, $^{14}$C($\pi^-,t^3$Нe)X. The experiment was carried out at the LANL with a two-arm semiconductor spectrometer. The ground and excited states have been observed. The assumption that the excited state E$_x \approx $ 3 MeV is a soft dipole mode is made. The states E$_x \approx $ 9.3 MeV, 11.5 MeV, 12.2 MeV have been observed for the first time. Parameters of excited states have been compared with data of other experimental and theoretical works.
| Section | 1. Nuclear structure: theory and experiment |
|---|---|
| The speaker is a student or young scientist | No |
Primary authors
Tatiana Leonova
Dr
Yu. Gurov
(DLNP JIRN, MEPhI)
Dr
Boris Chernyshev
(National Research Nuclear University “MEPhI)
Sergey Lapushkin
(National Research Nuclear University "MEPhI")
Dr
Vyacheslav Sandukovsky
(Joint Institute for Nuclear Research (JINR))
Michael Tel’kushev
(National Research Nuclear University "MEPhI")
