Speaker
Dr
Sergey Sidorchuk
(FLNR, Joint Institute for Nuclear Research, Dubna, Russia)
Description
The low-lying spectrum of 10He nucleus was studied in the 3H(8He,p)10He transfer reaction. The 0+ ground state was observed at about $2.1\pm0.2$ MeV ($\Gamma \sim 2$ MeV) above the three-body 8He+n+n breakup threshold. Angular correlations observed for 10He decay products show prominent interference patterns allowing us to make conclusions about the structure of low-energy excited states. We interpret the energy spectrum of
10He obtained in the experiment as a result of a coherent superposition of the
broad 1- state with a maximum located in the energy range 4-6 MeV and the 2+
state at the energy > 6 MeV on top of the 0+ state ``tail''. This anomalous level ordering indicates that the shell inversion phenomenon observed
in 12Be extends also to 10He system as the last known member of N=8 isotone.
Primary author
Dr
Sergey Sidorchuk
(FLNR, Joint Institute for Nuclear Research, Dubna, Russia)
Co-authors
Dr
Alexander Gorshkov
(FLNR, Joint Institute for Nuclear Research, Dubna, Russia)
Dr
Andrey Bezbakh
(FLNR, Joint Institute for Nuclear Research, Dubna, Russia)
Dr
Andrey Fomichev
(FLNR, Joint Institute for Nuclear Research, Dubna, Russia)
Prof.
Gurgen Ter-Akopian
(FLNR, Joint Institute for Nuclear Research)
Dr
Gzhegozh Kaminski
(Institute of Nuclear Physics PAN, Radzikowskiego 152, PL-31342, Krakow, Poland)
Dr
Irina Egorova
(FLTP, Joint Institute for Nuclear Research)
Dr
Leonid Grigorenko
(FLNR, Joint Institute for Nuclear Research, Dubna, Russia)
Prof.
Mikhail Golovkov
(FLNR, Joint Institute for Nuclear Research, Dubna, Russia)
Dr
Pavel Sharov
(FLNR, Joint Institute for Nuclear Research)
Dr
Roman Slepnev
(FLNR, Joint Institute for Nuclear Research)
Dr
Roman Wolski
(Institute of Nuclear Physics PAN, Radzikowskiego 152, PL-31342, Krakow, Poland)
Dr
Sergey Krupko
(FLNR, Joint Institute for Nuclear Research, Dubna, Russia)
Dr
Vladimir Gorshkov
(FLNR, Joint Institute for Nuclear Research, Dubna, Russia)
Dr
Vratislav Chudoba
(Institute of Physics, Silesian University in Opava, Czech Republic)
Dr
Yulia Parfenova
(FLNR, Joint Institute for Nuclear Research)
Prof.
Yuri Oganessian
(FLNR, Joint Institute for Nuclear Research, Dubna, Russia)
