The angular distributions, relative orbital moments and spins of fragments for binary fission of polarized nuclei

The angular distributions of fragments from binary fission of spontaneously fissioning odd and odd-odd nuclei polarized in strong magnetic field at superlow temperatures and low-energetic photofission of even-even nuclei, induced by dipole and quadrupole gamma quanta, have been investigated. It has been demonstrated that the deviations of the angular distributions from analogous distributions based on O. Bohr formula allow to obtain the estimation of the maximal relative orbital momentum of fission fragments, which gives an important information about mutual orientation of the fragment's spins. The analysis of the fragment's angular distribution of the underthreshold photofission for 238U nucleus has been made. Comparison of the calculated angular distributions with corresponding experimental distributions has led to conclusion that the maximal value of the relative orbital momentum of fission fragments is more that 20 and fragments' spins have predominantly parallel orientation relatively to each other. The possibility of realization of experiments has been considered for measurements of fragments' angular distributions of spontaneously fissioning polarized nuclei with the aim to determine both the spins of mentioned nuclei and maximal values of relative orbital moments of fission fragments