Pepelyshev Yu.N., Rogov A.D., Sidorkin V.F.

Accelerator driven pulsed high-flux neutron source for beam research

Dubitsky Ilya Semenovich
(St. Petersburg State University, St. Petersburg)

Behavior of local magnetization in ferromagnetic inverted opals in a magnetic field: micromagnetic modeling and experiment
(based on the materials of Ph.D. thesis)


Kupriyanova Ekaterina Alexandrovna
(The Lebedev Physical Institute of the Russian Academy of Sciences (LPI RAS), Moscow)

«Gravitational states in ultracold quantum systems»
(based on the Ph.D. thesis)

Penionzhkevich Yu.E.
(FLNR JINR)
Neutrons in exotic nuclei
The problems related to the effect of neutron clusters on the structure of neutron-rich nuclei near neutron stability boundaries are discussed. The results of measurements of delayed neutrons emitted after the beta-decay of exotic nuclei and the manifestation of various resonances in nuclei as a result of this process are presented. Dynamic neutron shell effects in the interaction of neutron-rich nuclei with target nuclei in various energy regions (from subbarrier to 50 AMeV) are described. The prospects of research on neutron-rich nuclei beams of radioactive-beam factories, including those of the DRIBs accelerator complex, are discussed.
 
Assoc. Prof. Wojciech Zając
(Institute of Nuclear Physics PAS, Poland)
Lithocholic acid as a molecular crystal, glass-former and a low molecular weight organic gelator
 
Lihocholic acid (LCA), i.e. 3α-hydroxy-5β-cholanic acid, or secondary bile acid, has a steroid framework with two functional end groups: the carboxyl hydroxyl ones. This structure makes it an interesting, if not a model material for the study of aggregation processes, both in bulk and in solution. Bulk properties were studied, among others, by thermal analysis, including a high precision modulated DSC (MDCS), by infrared spectroscopy via moving-window two-dimensional correlation analysis. LCA is a co-called low molecular weight organic gelator to some organic solvents such as DMSO or ethanol. The structure of the gels was studied by small angle neutron scattering as well as by optical and electron microscopy and, complementarily, by MDSC. SEM and TEM images reveal hierarchical, self-similar structure of fibrillar matter. Apparently, this structure is responsible for the gelation fenomena.