13 research outputs found
Bremsstrahlung emission during -decay of
We obtained the spectrum of probability of the bremsstrahlung emission
accompanying the -decay of (E=4.8 MeV) by
measuring the - coincidences and using the model presented in
our previous study on the decay of (E=7.7
MeV). We compare the experimental data with the quantum mechanical calculation
and find a good agreement between theory and experiment. We discuss the
differences between the photon spectra connected with the -decay of the
and nuclei. For the two mentioned nuclei we
analyze the bremsstrahlung emission contributions from the tunneling and
external regions of the nucleus barrier into the total spectrum, and we find
the destructive interference between these contributions. We also find that the
emission of photons during tunneling of the -particle gives an
important contribution to the bremsstrahlung spectrum in the whole E
energy range of the studied Ra nucleus
Multipolar model of bremsstrahlung accompanying proton-decay of nuclei
Emission of bremsstrahlung photons accompanying proton decay of nuclei is
studied. The new improved multipolar model describing such a process is
presented. The angular formalism of calculations of the matrix elements is
stated in details. The bremsstrahlung probabilities for the ,
, and nuclei decaying from
the state, the and nuclei decaying from the state, the and nuclei decaying from the
state are predicted. Such spectra have orders of values similar to the
experimental data for the bremsstrahlung photons emitted during the
-decay. This indicates on real possibility to study bremsstrahlung
photons during proton decay experimentally and perform further measurements.Comment: 14 pages, 6 figure
Search for P-odd time reversal noninvariance in nuclear processes
The scheme of search for time reversal noninvariance in nuclear processes based on the measurement of linear polarization of gamma radiation of a sample aligned by a preceding nuclear decay or by cryogenic means is presented