Recent results related to excited states of 6Be and 10He
Paper in proceeding, 2012
The 1H(6Li,6Be)n charge-exchange reaction and the 3H(8He, p)10He two-neutron transfer reaction were recently carried out at the ACCULINNA fragment separator (FLNR, Dubna) to populate the ground and excited states of 6Be and 10He nuclei, respectively. The 6Be ET spectrum (ET is the 6Be energy above its 4He+p+p decay threshold) was obtained with high statistics and described by the well-known 0+ ground state of 6Be at ET = 1.37 MeV, the 2+ state at ET = 3.05 MeV and a broad structure extending from 4 to 16 MeV which could be interpreted as the isovector soft dipole mode associated with the 6Li ground state. In the 10He case the 0+ ground state was found at about 2.1(2) MeV (T ∼ 2 MeV) above the 8He+n+n breakup threshold. Angular correlations observed for 10He decay products show prominent interference patterns allowing to draw conclusions about the structure of low-energy excited states: 1- (E T ∼ 5 MeV) and 2+ (ET > 6 MeV).
Author
A. S. Fomichev
Joint Institute for Nuclear Research (JINR)
A.A. Bezbakh
Joint Institute for Nuclear Research (JINR)
V. Chudoba
Slezska univerzita v Opave
Joint Institute for Nuclear Research (JINR)
I. A. Egorova
Joint Institute for Nuclear Research (JINR)
S.N. Ershov
Joint Institute for Nuclear Research (JINR)
M. S. Golovkov
Joint Institute for Nuclear Research (JINR)
A. V. Gorshkov
Joint Institute for Nuclear Research (JINR)
L.V. Grigorenko
National Research Centre "Kurchatov Institute"
Helmholtz
Joint Institute for Nuclear Research (JINR)
P. Jalůvková
Slezska univerzita v Opave
Joint Institute for Nuclear Research (JINR)
G. Kaminski
Polish Academy of Sciences
Joint Institute for Nuclear Research (JINR)
S. A. Krupko
Joint Institute for Nuclear Research (JINR)
E.A. Kuzmin
National Research Centre "Kurchatov Institute"
E.Y. Nikolskii
National Research Centre "Kurchatov Institute"
RIKEN
I. G. Mukha
Helmholtz
Y. L. Parfenova
Joint Institute for Nuclear Research (JINR)
P.G. Sharov
Joint Institute for Nuclear Research (JINR)
S. I. Sidorchuk
Joint Institute for Nuclear Research (JINR)
R. S. Slepnev
Joint Institute for Nuclear Research (JINR)
S. V. Stepantsov
Joint Institute for Nuclear Research (JINR)
G. M. Ter-Akopian
Joint Institute for Nuclear Research (JINR)
R. Wolski
Polish Academy of Sciences
Joint Institute for Nuclear Research (JINR)
Mikhail Zhukov
Chalmers, Applied Physics, Subatomic Physics
A.A. Yukhimchuk
All-Russian Research Institute of Experimental Physics
S.V. Filchagin
All-Russian Research Institute of Experimental Physics
A.A. Kirdyashkin
All-Russian Research Institute of Experimental Physics
I.P. Maksimkin
All-Russian Research Institute of Experimental Physics
O.P. Vikhlyantsev
All-Russian Research Institute of Experimental Physics
EPJ Web of Conferences
21016275 (ISSN) 2100014X (eISSN)
Vol. 38 Art. no. 15002- 15002Subject Categories
Physical Sciences
DOI
10.1051/epjconf/20123815002