[Study of the characteristics of diagnostic X-ray equipment. 2. Relationship of spectral distribution of braking radiation and its dosimetric characteristics]. / Issledovanie kharakteristik rentgenodiagnosticheskikh izluchatelei. 2. Vzaimosviaz' spektral'nogo raspredeleniia tormoznogo izlucheniia s ego dozimetricheskimi kharakteristikami.

The results obtained by the method outlined in the paper for calculating dosimetric characteristics of a braking radiation spectrum are in rather good agreement with those of experimental studies and may be used for practical calculations instead of expensive and labour-consuming experimental methods for estimating the spectral characteristics of braking spectra.

[Spectral distribution of braking radiation in the tungsten anode X-ray tubes]. / Spektral'noe raspredelenie tormoznogo izlucheniia v rentgenovskikh trubkakh s vol'framovym anodom.

An analytical expression (mathematical model) of the spectral distribution of braking radiation in the in tungsten anode X-ray tubes has been derived. The discrepancy of the calculated spectra with experimental findings is no more than +/- 6%.

[Development of a system controlling x-ray diagnostic devices]. / Razvitie sistemy regulirovaniia rentgenodiagnosticheskogo apparata.

The purpose and criteria for efficiency (errors of anode voltage holding, tube current, and exposure) of the system controlling X-ray diagnostic devices are considered from theoretical and practical points of view. A microprocessor-controlled variant of the controlling system developed for numerous existing six-pulsed generators of the -3 type is outlined. The design and operation of the key circuit diagram of X-ray tube filament in the PEHA 50-6 microprocessor-controlled feeding device are shown in detail.

[Development of a monitoring system for radiodiagnostic devices]. / Razvitie sistemy upravleniia rentgenodiagnosticheskikh apparatov.

The authors review the possibilities of the application of the "man-machine" theory to the radiodiagnostic unit. Show implementation of the theory with special reference to the basic purpose of the unit RENA 50-6 MP equipped with the microprocessor system of monitoring.

[Effect of the x-ray tube anode current on the intensity and energy spectrum of the radiation]. / Vliianie anodnogo toka rentgenovskoi trubki na intensivnost' i énergeticheskii sostav izlucheniia.

Operating modes of the X-ray equipment that determine the energy spectrum of the X-radiation have been experimentally studied. Based on the spectrum analysis performed with a multichannel analyzer and a computer the quantitative relations are derived demonstrating the impact of the current and voltage waveform upon the effective radiation energy for several types of X-ray devices. The correlation tables of the X-ray equipment voltage for various rectification circuits are presented.

[Stabilization of the energy component of the radiation from diagnostic x-ray tubes]. / Stabilizatsiia énergeticheskogo sostava izlucheniia diagnosticheskikh rentgenovskikh trubok.

A variation of X-ray energy spectrum has been experimentally studied in operating conditions. The filtration on the irregular sites of a destroyed target has been shown to cause a growth in effective radiant energy. A possibility to stabilize the spectrum by reducing a thickness of an additional filter is discussed. The relationship between the thickness of the equivalent aluminium filter and a value of X-ray tube ageing is given, the error of the spectrum stabilization being 5%.