V. F. Kitaeva
Lebedev Physical Institute
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Featured researches published by V. F. Kitaeva.
IEEE Journal of Quantum Electronics | 1969
V. F. Kitaeva; Yu. Osipov; P. Rubin; N. N. Sobolev
Temperatures and densities of atoms and electrons were obtained by spectroscopic methods in a gas discharge plasma used for CW ion-argon lasers. The measurements were carried out with capillaries 250-400 mm long with a bore diameter of 1.6-2.8 mm. The filling pressures were 0.2-0.7 torr and the discharge current densities 100-500 A/cm2. Electron temperatures were found from measured side-on widths of ArII lines using the Kagan-Perel theory. The electron densities were determined from the width of the H β line and from electro-conductivity. The ionization rate was evaluated through the Doppler shift of spectral lines as well as through half-widths of the ArII lines taken along the discharge. For this purpose, the Kagan-Perel theory was used also. Population rates of the 4s, 5s, 4p, 3d , and 4d ArII configurations of the ion ground state were calculated as well as radiation transition probabilities. With the aid of these data, population rates and densities were found for the doublet term system of configurations 4s and 4p . Population inversion was also evaluated. A comparison of the results of calculation with the experiment was carried out.
IEEE Journal of Quantum Electronics | 1966
V. F. Kitaeva; Yu. Osipov; N. N. Sobolev
Characteristics of argon discharge which are relevant to the operation of Ar+lasers are investigated. These include ion and electron densities and ion temperatures as a function of current density.
IEEE Journal of Quantum Electronics | 1971
V. F. Kitaeva; Yu. Osipov; N. N. Sobolev
In this paper an investigation of the spectral line widths and shifts of Ar I and Ar II lines in argon ion laser plasma is carried out. The discharge-tube internal diameters were 5 and 7 mm, the current densities were 113, 163, and 242 A/cm2, and the pressures were 0.68, 0.42, and 0.23 torr. Approximate calculations were made of ion and electron temperatures, electron density, ion mean free path, and charge-exchange cross section. It was determined that ion-neutral charge-exchange collisions play an important role in this type of plasma.
IEEE Journal of Quantum Electronics | 1974
V. F. Kitaeva; Yu. Osipov; N. N. Sobolev; A.L. Shelekhov; V.P. Agheev
The results of local investigations of Ar+-laser plasma parameters by a new pulsed single-probe method are presented. The experiments were carried out in a 10-mm-bore tube at discharge currents of 60-80 A and argon pressure of 0.2-1 torr. Electron concentrations and temperature distributions over the discharge-tube radius have been determined. Based on the results obtained, a number of Ar+-laser plasma parameters have been estimated. Our results are compared with the available model theories of the Ar+ laser.
IEEE Journal of Quantum Electronics | 1968
V. F. Kitaeva; Yu. Osipov; P. Rubin; N. N. Sobolev
Archive | 1966
V. F. Kitaeva; Yu. I. Osipov; N. N. Sobolev
Archive | 1967
V. F. Kitaeva; Yu. I. Osipov; N. N. Sobolev
Archive | 1967
V. F. Kitaeva; Yu. I. Osipov; L. Ya. Ostrovskaya; N. N. Sobolev
Archive | 1967
V. K. Glazunov; V. F. Kitaeva; L. Ya. Ostrovskaya; N. N. Sobolev
Archive | 1972
V. F. Kitaeva; Yu. I. Osipov; L. S. Pavlova; V. M. Polyakov; N. N. Sobolev; L. S. Fedorov