Primary scientific results of DIMS&PhE in 2001

2002    2001    2000    1999    1998    1997    1996    1995    full list

(See also Publications)

1. The structure of distributed information measurement system for remote control of physical experiment was developed. The system includes communication server, equipment control servers (CAMAC, GPIB, MCS-96 microcontroller), web server for monitoring, and clients. The communication server provides multi-user environment and resources sharing among several clients. The system is based on TCP/IP stack and can be integrated into the global network. At the moment the CAMAC-server and GPIB-server were implemented. They provide an actual access to corresponding instrument interfaces. (by S. Gavrilov, S. Kiprushkin, S. Kurskov, E. Zhiganov)

2. The excitation spectra of Ne I at collisions of low-energy Neon atoms were researched in the interval of 260-795 nm. The excitation cross-sections of some spectral lines and polarization functions of 2p⁵3p-2p⁵ns, 2p⁵3s-2p⁵np, and 2p⁵3p-2p⁵nd crossings (3≤n≤11) were evaluated at collision energies up to 500 eV. The serial dependencies were analyzed, the role of various methods of population of the levels was evaluated. (by S. Kurskov)

3. For the first time the influence of plasma crystal on spectroscopic parameters of glow discharge in Neon was researched (at pressure of 0.4 Torr, and direct current of 1.2-2.4 mA). The crystal appeared in the head of strata. The crystal was formed by polydispersed Al₂O₃ particles of 2-3 μ and concentration of 10⁴ cm^-3. It was shown, that absolute intensity of Neon spectral lines corresponding to 2p⁵3p-2p⁵3s crossings varied from 2% up to 19% when the particles was thrown into. This variation depends on discharge current. The reabsorption variation by means of "mirror behind the tube" method allowed to evaluate upper bound of metastable atoms concentration (<10¹¹ cm^-3), and to prove the absence of significant influence of dispersion on particles and absorption by them on intensity in these conditions. The theoretical model of this process was proposed, and on its basis the evaluations of this phenomenon were performed. These evaluations correspond to the experiment. The significant broadening (abt 3%) of brightness lines profile was discovered when the particles was thrown into. (by Prof. L. Luizova, S. Podryadchikov, Prof. A. Khakhaev)

4. The automated software and hardware complex for heterogeneous non-stationary plasma diagnostics was developed and put into operation. The complex is based on LabView and has the possibility of remote control. The variants of the complex were implemented on various spectroscopic setups: DFS-12 spectrometer, and scanning Fabry-Perot interferometer with ISP-51 monochromator. The original software for data acquisition and processing was developed. The software can be extended for similar hardware based on LabView and CAMAC. (by K. Ekimov, Prof. L. Luizova, R. Prikhodchenko)