Primary scientific results of DIMS&PhE in 1996
(See also Publications)
1. Unique approach and equipment featured high selectivity and time-of-flight
diagnostics system were created to solve the problems of isotope selective
photoionization. Tuning of the laser radiation in the given spectral range
on the absorption line of an element leads to effective excitation of some
sort of isotopes whereas the second (third in case of multistep processes)
laser pulse ionizes the atoms. The application of the time-of-flight mass-spectroscopy
analysis of the obtained ions increases the overall method sensitivity
and affects in higher selectivity of the photoionization processes. The
experiments on the isotope spectral separation of Li 6, Li 7 atoms were
carried out and their relative contents in pattern were investigated.
2. The concept and then the experimental model of the multitask, multiuser
environment which supports physical experiments (in particular on spectral
diagnostics of low temperature plasma and on interaction of atomic particles)
were developed. It is based on the computer complex, CAMAC equipment, research
stands and also on the universal and specific software, involved in the
unified heterogeneous system, satisfied to the open system requirements,
and in principle appears to be the component of the InterNet.
3. The new model of excited atoms formation under scattering of slow
positively charged ions by a surface of a solid was elaborated. Excited
atoms arise in this model as the result of oscillation of electron between
a solid and an ion. Angle distribution of ions being scattered and variation
of ion velocity after scattering have been taken into account. Using the
model created it is possible to calculate the dependencies of excited atom
yield on binding energy of electron in a given state in atom and on the
velocity of incident ions. The comparison of the model with experimental
data has been performed.
4. To detect and analyze the spatial characteristics of the ordered
structures in low temperature plasma the methodical base used tomography
technique was constructed.