Download The list of publications

Specialization: 010700/01
Program: 40 Experimental and Theoretical Investigation of Atomic Nuclei Properties
Program Manager: prof. K.A. Gridnev
Department of Nuclear Physics
Supervisor: prof. Yu.N. Novikov
Reviewer: N.A. Lyutorovich
Direct precision measurements of masses and mass differences
of nuclides in the ion trap
M.V. Smirnov
One of the most delicate experiments, which will be able to answer to the question on the
Dirac or Majorana origin of neutrino are neutrinoless double β-processes. If we can register
the neutrinoless double в-process, it means that neutrino is a Majorana particle, and that the
total lepton number is not conserved.
In this master degree thesis we consider the possibility of the resonant neutrinoless double
electron capture by nuclide 124Xe. The main parameter determining the possibility of such an
enhanced process is the mass difference Q between the parent 124Xe and daughter 124Te
nuclides, which should be known with the precision exceeding ≈ 100 eV. Precise
Q-measurements have been implemented at the SHIPTRAP(GSI). Partial resonance
conditions have been established and a half-life for neutrinoless double е-capture in 124Xe
was estimated as 1028 years.
The list of publications
1. D.A. Nesterenko, M.V. Smirnov et al. Double beta-transformations in the isobaric triplets
with mass numbers A=124, 130 and 136// will be sent to the journal Phys. Rev. C.