Unstable nuclei in dissociation of light stable and radioactive nuclei in nuclear track emulsion · arXivDesk1607.08020Jul 27, 2016To be published in Physics of Particles in Nuclei (in press)
Unstable nuclei in dissociation of light stable and radioactive nuclei in nuclear track emulsion
D. A. Artemenkov, A. A. Zaitsev, P. I. Zarubin
Abstract
A role of the unstable nuclei 6Be, 8Be and 9B in the dissociation of relativistic nuclei 7,9
Be,
B and
C is under study on the basis of nuclear track emulsion exposed to secondary beams of the JINR Nuclotron. Contribution of the configuration
Be +
n
to the
Be nucleus structure is 8
1% which is near the value for the configuration
Li +
p
. Distributions over the opening angle of
-particle pairs indicate to a simultaneous presence of virtual
Be
and
Be
states in the ground states of the
Be and
C nuclei. The core
B is manifested in the
C nucleus with a probability of 30
4%. Selection of the
C "white" stars accompanied by
Be
(
B) leads to appearance in the excitation energy distribution of 2
2
p
"quartets" of the distinct peak with a maximum at 4.1
0.3 MeV.
Be
decays are presented in 24
7% of 2He + 2H events of the
C coherent dissociation and 27
11% of the 3He ones. The channel
B + H amounts 14
3%. The
Be
nucleus is manifested in the coherent dissociation
B
2He + H with a probability of 25
5% including 14
3% of
B decays. A probability ratio of the mirror channels
B +
n
and
Be +
p
is estimated to be 6
1.