12 Result(s)

Article

Main Results of the SPIRIT Experiment Onboard the CORONAS-F Satellite

The main results of the SPIRIT experiment on imaging spectroscopy of the Sun in the soft X-ray and extreme vacuum UV range are presented. The results were obtained onboard the CORONAS-F satellite, which has been ...

I. A. Zhithik, S. V. Kuzin, I. I. Sobel'man, O. I. Bugaenko… in Solar System Research (2005)

Article

Designing 1.5-and 2-mm waveband radio spectrometers with optimized performance for atmospheric research

Performance of 142-and 204-GHz radio spectrometers is optimized for remote sensing of ozone and chlorine monoxide in the Earth’s atmosphere by means of computer simulation. Versions of spectrometers with one b...

S. B. Rozanov, I. I. Sobel’man, V. G. Bozhkov… in Radiophysics and Quantum Electronics (2005)

Article

Solar and Heliospheric Phenomena in October–November 2003: Causes and Effects

We present new observational data on the phenomena of extremely high activity on the Sun and in the heliosphere that took place in October–November 2003. A large variety of solar and heliospheric parameters gi...

I. S. Veselovsky, M. I. Panasyuk, S. I. Avdyushin, G. A. Bazilevskaya… in Cosmic Research (2004)

Article

Light absorption in hydrogen plasma on the bound-free and free-free transitions of the H-H⁺ system

Radiative transitions in the proton-hydrogen atom system are theoretically analyzed over a wide range of wavelengths and temperatures of equilibrium hydrogen plasma. The light absorption at T∼1500–3500 K due to p...

V. S. Lebedev, L. P. Presnyakov… in Journal of Experimental and Theoretical Ph… (2000)

Article

Photodissociative absorption by H ₂ ⁺ in the solar photosphere

Photoabsorption by systems of hydrogen atoms and protons in the solar photosphere is studied. Analytical formulas for the partial cross sections for photodissociation of the H ₂ ...

V. S. Lebedev, L. P. Presnyakov, I. I. Sobel’man in Astronomy Reports (2000)

Article

Investigation of the solar transition layer and corona by the method of imaging XUV spectroscopy in the terek and res experiments on board the KORONAS-I satellite

The method of imaging XUV spectroscopy was used to study plasma in the transition layer and inner corona of the Sun with temperatures 10⁵–10⁷ K in the TEREK and RES experiments on board KORONAS-I. The observation...

I. A. Zhitnik, A. P. Ignatiev, V. Yu. Klepikov… in Radiophysics and Quantum Electronics (1996)

Article

Possibility of using recombination reactions and alkali metals to obtain inversion on atomic iodine

The possibility of producing a continuous-flow laser operating on an atomic iodine transition is considered. Population inversion is the result of depletion of the lower laser level on account of predominant r...

T. L. Andreeva, V. I. Babkin, A. I. Maslov… in Journal of Soviet Laser Research (1983)

Article

Possibility of separating the isotopes¹²⁷I and¹²⁹I with the aid of a photodissociation iodine laser

A method for separating iodine isotopes is proposed, based on the large difference between the rate constants of the excited I*(²P_1/2) and unaxclted iodine atoms with radicals CF₃ and with Cl₂ molecules, and on t...

T. L. Andreeva, S. V. Kuznetsova, A. I. Maslov… in Journal of Soviet Laser Research (1983)

Article

Reactions of excited I^*(²P_1/2) and unexcited I(²P_3/2) iodine atoms in perfluoroalkyl radicals

A method of investigating reactions of excited and unexcited atoms is discussed. It is based on pulsed photolysis of molecules with simultaneous passage of laser radiation through the working medium. The metho...

T. L. Andreeva, S. V. Kuznetsova, A. I. Maslov… in Journal of Soviet Laser Research (1983)

Article

On the propagation of electromagnetic waves in a medium with a variable refractive index

L. P. Presnyakov, I. I. Sobel'man in Soviet Radiophysics (1965)