42 research outputs found
MACHINE VISION BASED LIQUID CALORIMETER READINGS REGISTRATION SYSTEM
In this work machine vision based visual registration of liquid calorimeter readings sys-tem is described. The system includes meniscus position control unit and controls by program for personal computer
Generation of electromagnetic fields of extremely high intensity by coherent summation of Cherenkov superradiance pulses
We demonstrate both theoretically and experimentally the possibility of correlating the phase of a Cherenkov superradiance (SR) pulse to the sharp edge of a current pulse, when spontaneous emission of the electron bunch edge serves as the seed for SR processes. By division of the driving voltage pulse across several parallel channels equipped with independent cathodes we can synchronize several SR sources to arrange a two-dimensional array. In the experiments carried out, coherent summation of radiation from four independent 8-mm wavelength band SR generators with peak power 600 MW results in the interference maximum of the directional diagram with an intensity that is equivalent to radiation from a single source with a power of 10 GW
High Voltage Subnanosecond Monocycle Active Former Based on Compression Energy Unit
Compact high voltage subnanosecond monocycle former (MF) was tested. The device was designed on base of energy compression device and operated in a travelling wave mode. MF consists of high impedance and forming lines, which discharged for the load in parallel. As a result, the monocycle with pulse duration ∼1 ns and typical peak-to-peak amplitude ∼250 kV was formed without additional peaking of the nanosecond pulse rise time. Some pulses reached the maximum amplitude ∼270 kV. The parallel discharge circuit, and a spiral shape of forming line allowed keeping small dimensions of MF, and save enough electrical strength to operate with pulse repetition rate up to 100 pps
Instability of a two-dimensional film flow with inhomogeneous temperature field on the free surface
Study of humoral immunity in animals immunized with emulsion FMD vaccines
The paper demonstrates results obtained during the study of humoral immunity in cattle after single immunization with inactivated emulsion FMD vaccines based on Montanide ISA 70 and ISA 206 adjuvants. The humoral immunity was assessed using virus neutralization test and ELISA. The vaccines were demonstrated to induce high level of antibodies maintained for 70 days post vaccination (observation period)
PULSE POWER SUPPLY WITH ARBITRARY OUTPUT SIGNAL FORM
Pulse power supply with arbitrary output signal form can be used in special equipment. The device is based on the direct digital synthesis method
High-temperature materials and coatings based on intermetallic compounds of the nickel-aluminum system
INVESTIGATION OF RADIAL AIR BREAKDOWN BY TRAVELING TEM-WAVE INITIATED BY RUNAWAY ELECTRONS
Investigations of the air breakdown in the field of traveling TEM-wave have been per-formed. Also researches of the breakdown were carried out both at various amplitudes and at different durations of high voltage pulse