Speaker
A. A. Ciemny
(University of Warsaw, Faculty of Physics)
Description
When approaching the proton drip-line, beta-delayed particle spectroscopy becomes a very important tool for understanding the structure of atomic nuclei. In fact, so far from the beta-stability line, particle emission from highly excited states in the daughter nuclei becomes extremely competitive to deexcitation via gamma emission, since the Q-value gets large.
Neutron-deficient silicon isotopes were investigated in an experiment performed at the MARS spectrometer at the Cyclotron Institute, Texas A&M University, with the aim of verifying the branching ratios for the known decay channels (beta-delayed one- and two-proton emission) and of identifying new ones, since the energy windows for beta-delayed proton+alpha and three-proton emission are open. The silicon ions were implanted into the Warsaw Optical Time Projection Chamber [1], where they decayed. The detector is particularly well suited for such studies, since it allows detection of these exotic decay modes with efficiency close to 100%. The preliminary results of the analysis of the beta decay of Si-23 will be presented.
[1] M. Pomorski et al., Phys. Rev. C 83, 014306(R) (2011)
Author
A. A. Ciemny
(University of Warsaw, Faculty of Physics)
Co-authors
A. Fijalkowska
(Department of Physics and Astronomy Rutgers, The State University of New Jersey, USA)
A. Saastamoinen
(Texas A&M University, College Station, TX, USA)
B. T. Roeder
(Texas A&M University, College Station, TX, USA)
C. Hunt
(Texas A&M University, College Station, TX, USA)
C. Mazzocchi
(Faculty of Physics, University of Warsaw, Poland)
G. Kaminski
(Joint Institute for Nuclear Research, Dubna, Russia)
G. Rogachev
(Texas A&M University, College Station, TX, USA)
H. Jayatissa
(Texas A&M University, College Station, TX, USA)
J. Hooker
(Texas A&M University, College Station, TX, USA)
L. Janiak
(Faculty of Physics, University of Warsaw, Poland)
M. Pfützner
(Faculty of Physics, University of Warsaw, Poland)
M. Pomorski
(Faculty of Physics, University of Warsaw, Poland)
N. Sokolowska
(Faculty of Physics, University of Warsaw, Poland)
S. Sharma
(Faculty of Physics, University of Warsaw, Poland)
W. Dominik
(Faculty of Physics, University of Warsaw, Poland)
Y. Koshchiy
(Texas A&M University, College Station, TX, USA)
