About Us
Our group studies the excited states of nuclei in A~100 and A~190 mass regions produced via heavy ion induced fission and in fusion/evaporation reactions. In spite of the fact that the produced nuclei are from different regions they show a similar collective properties: the nuclei in both regions exhibit variety of shapes and even shapes coexistence can be expected; several nuclei may be soft against gamma-deformation; addition or subtraction of few nucleons may increase significantly the nuclear deformation.
The mechanism of high-spin states population is the following: accelerated heavy ions bombard the target nuclei. Both nuclei may fusion and form a highly excited compound nucleus with high angular momentum. The nucleus evaporates few light particles to cool down but still have high angular momentum. There are two de-exciting competing mechanisms: emission of cascade of gamma rays or fission into two fragments with symmetric masses. Each of these fragments is excited, which to cool down they emit several neutrons and a cascade of gamma-rays. The prompt gamma-rays are detected by Multidetector Gamma-Ray Arrays.
Research Topics
- Evolution of collectivity in even-even transitional nuclei with the particle numbermore...
- Evolution of collectivity in even-even nuclei with angular momentummore...
- Gamma-spectroscopy of super-heavy nuclei
- Fission fragments gamma-spectroscopy
- Life-time measurements: The Recoil Anisotropy method
- Electron and electron-gamma spectroscopy