Investigation of iron borate on the submillimeter waves

Antiferromagnetic resonance (AFMR) in iron borate at the frequency of 300 GHz at the room temperature in weak (down to 0.1T) external magnetic fieldH has been studied. The loss in AFMR line increased or decreased depending on the direction and magnitude ofH. Such properties ofFeBO ₃ monocrystals allows to design undirectional and modulation devices.     

Experience in developing ultrahigh capacity compressor stages

Translated from Khimicheskoe i Neftyanoe Mashinostroenie, No. 2, pp. 4–7, February, 1992.     

Increase in the Charge State of the Uranium Ion Beam Generated by the MEVVA Ion Source

The Metal Vapor Vacuum Arc (MEVVA) ion source and its modifications are investigated at the Institute of Theoretical and Experimental Physics (ITEP). In a series of the experiments, the possibility of increasing the charge state of the generated uranium ion beam was revealed. The charge state increases as a result of developing a high-current vapor vacuum arc discharge from the source cathode to an auxiliary anode located in an increasing axial magnetic field. The uranium ion beam with a total current of 150 mA was obtained, U⁷⁺ uranium ions being 10% of the current.     

Numerical study of the processes of resonance emergence in the experimental set-up of a pulse detonation engine

The results of calculations of the pressure, flow rate, and temperature in the combustion chamber of a pulse detonation engine (PDE) for the conditions realized in the experiment are presented. On the basis of the developed mathematical model, the multiparameter calculations are performed for physical processes occurring in the working path of a PDE. We studied the conditions for the occurrence of oscillations in the PDE combustion chamber. For certain values of the parameters of the set-up, the oscillations have constant amplitude and frequency. These results are in good agreement with the data of other authors. The conditions under which the detonation engine can operate in the pulse mode are also investigated in the paper.