Выпуск 1, 2011 г.

The approach to reliability prediction of integrated circuits at radiation treatment

V.D. Popov

The experimental results of radiation tests and the approach to an estimation of integrated circuit reliability change at radiation treatment are presented
Keywords: radiation failure, reliability of integrated circuit, low-intensity ionizing radiation

Calculation technique of absorbed doses of space ionizing radiation with use of spacecraft 3D-models

V.A. Hatulev, Yu.I. Zavora, A.N. Zagorkov, V.P. Litvinov, O.V. Miheev, Yu.N. Harin

The calculation technique of absorbed dose of space ionizing radiation in points inboard complex objects, using built in the majority of the modern CAD ray tracing function is presented. The object is represented as 3D-radiation model - a modification of its 3D-model considering characteristics, actual for the task of absorbed dose calculation
Keywords: absorbed dose, ionizing radiation, space, 3D-modeling, spacecraft

Role of electron emission in formation of the surface states in the MOS at gamma radiation

A.A. Lebedev, A.Yu. Orlova, V.D. Popov

Radiation effects at low-intensity ionizing radiation to integral chips are considered. Results of determination of surface-state density in the MOS-transistor and in the bipolar transistor at different intensities of gamma radiations are presented. The quality physical model of formation of the surface states in the MOS is offered
Keywords: ionizing radiation, integral chips

Parameter optimization of the mode of MOS IC radiation-thermal processing

G.A. Protopopov

The optimal parameterization procedure of a mode of MOS IC radiation-thermal processing is offered
Keywords: radiation hardening, ionizing radiation, radiation-thermal processing

Research of powerful MOS-transistor sensitivity to gate rupture effect at influence of 1 Gev protons

E.V. Mitin

The powerful MOS-transistor sensitivity to SEGR-effect at influence of high-energy protons is researched. It was researched SEGR-effect in the transistors at preliminary influence of proton and X-ray radiation, and also of thermomechanical factors. Influence of drain-to-source voltage on the gate-source voltage leading to SEGR development in MOS-transistor is revealed
Keywords: MOS-transistor, SEGR-effect

Research of the dark currents in the CCD-matrixes irradiated with protons and neutrons

A.S. Vorobyev, E.M. Ivanov, N.A. Ivanov, E.V. Mitin, O.V. Lobanov, V.V. Pashuk, M.G. Tverskoy, O.A. Shcherbakov

Results of an irradiation of CCD-matrixes Sony ICX 259AL on proton and neutron beams of synchrocyclotron PNPI RAS are resulted. Distributions of matrix pixels on dark current value are analyzed. The received experimental data are compared to results of calculations and results of other authors
Keywords: CCD-matrixes, irradiation, dark current

Research of paper capacitor characteristics in the conditions of gamma radiation at elevated temperature

R.E. Nevsky, A.V. Sokovishin

Results of the experimental state estimation of the multilayer high-voltage insulation of paper storage capacitors hardening compound impregnated are stated. The offered experimentation complex is to be applied to long-term ionizing radiation estimation as of newly developing constructions of capacitive energy storages, so for confirmation and forecasting of life span of the developed storages
Keywords: capacitor, radiation, temperature

The absolute ionization monitor with profiler function

K.N. Ermakov, N.A. Ivanov, E.A. Kotikov, O.V. Lobanov, A.F. Naidenkov, V.V. Pashuk, M.G. Tverskoy

Results of researches of the ionization monitor with profiler function for measurement of absolute magnitude of proton fluxes and their cross-section density distribution are presented
Keywords: ionization chamber, researches, profiler

Electron source of subnanosecond duration on the basis of high-voltage discharge in air atmosphere

E.V. Davidov, T.V. Loiko

In high-voltage discharge in air at atmospheric pressure is generated the electron beam of subnanosecond duration. On examples of measurement with different  ionizing-radiation detectors is shown the possibility to use the electron beam for calibration of ionizing-radiation detectors with subnanosecond time resolution. The main advantage of radiation source are a lack of vacuum tube, a good resource and small generator
Keywords: electron beam, subnanosecond duration, calibration, detector, ionizing radiation, discharge, atmosphere

Implementation on accelerator EMIR-2 of new bremsstrahlung pulse generation modes

R.V. Protas, R.R. Hafizov, V.Yu. Kononenko, B.N. Lavrentyev, R.N. Munasypov, D.E. Pavlovskih

Results of researches about implementation on accelerator EMIR-2, with two opposite located accelerating tubes, the new bremsstrahlung pulse generation modes are described: the monopulse representing the bremsstrahlung pulse superposition, generated by both synchronous accelerators; the pulse of the «difficult» form containing high-intensity «short» (≤ 100 nanoseconds) and low-intensity «long» (≥ 1 microsecond) components. It is shown that as a result of synchronization of the multimodule high-voltage impulse generator are implemented new bremsstrahlung pulse generation modes
Keywords: accelerator EMIR-2, bremsstrahlung, high-voltage impulse generator, synchronization

Generation of two sequential bremsstrahlung pulses with controlled time interval on the two-module accelerator EMIR-2

R.V. Protas, V.Yu. Kononenko, R.R. Hafizov, D.E. Pavlovskih

As a result of the researches is reached the generation of two sequential bremsstrahlung pulses with controlled time interval by operation of two units of the accelerator EMIR-2. Time interval between bremsstrahlung pulses is regulated in the range of 2-1000 microsecond with a relative deviation ≤ 5 %. At distance between anodes of accelerating tubes, equal to 100 mm, the maximum of bremsstrahlung exposure dose  on the anode of each tube has made to 200 kR, and in the center of radiation zone not less than 12 kR
Keywords: accelerator EMIR-2, accelerating tube, bremsstrahlung, time interval

Experimental researches of the diamond detector in heavy ion cyclotron beam

A.A. Altukhov, V.S. Anashin, K.N. Zyablyuk, V.A. Kolyubin, S.А. Lvov, M.G. Sitnikov, V.A. Skuratov

Possibility of creation of heavy charged particle spectrometer on the basis of the diamond detector of ionizing radiation is shown. Experimental tests of heavy charged particle spectrometry on the applied research channel of cyclotron U-400 are resulted. The experimental spectrometer facility and measurement technique are described. Experimental researches have shown that application of the diamond detector provides measurement of heavy charged particle flux density in energy range of 5-470 MeV with error not exceeding ± 1 %; the diamond detector allows to measure heavy charged particle energy in a range of 5-470 MeV with error not exceeding ± 15 %
Keywords: diamond detector, heavy charged particles

Operating mode of peaking discharger of pulse shaping system of accelerator UIN-10

D.M. Ivaschenko, V.A. Kamensky, V.V. Kochergin, A.P. Metelev, N.G. Mordasov, A.A. Fedorov, A.M. Chlenov

The construction and research results of an operating mode of peaking discharger on switching voltage to 8 МВ are described. Dependence of breakdown voltage amplitude from elegas pressure in peaking discharger is shown
Keywords: switching, voltage, current, discharger, elegas

Use of coaxial vacuum line for formation of bremsstrahlung diploid beams

N.G. Mordasov, A.M. Chlenov, D.M. Ivaschenko, V.A. Kamensky

Researches of formation of diploid electron beams and bremsstrahlung by discontinuity introduction in coaxial vacuum line of heavy-current pulse accelerator in the form of its angle indexing α = π/2 at turn radius R ≤ λ/2 π (λ – wavelength of electromagnetic pulse) are resulted. It is shown that such discontinuity in a line fulfills function of an electromagnetic pulse energy separator, thus electron beams have essentially different amplitude time characteristics
Keywords: coaxial vacuum line, bremsstrahlung radiation

The radiation-enhanced energy source on the basis of an isotope nickel-63

Yu.S. Nagornov, E.S. Pchelintseva, V.M. Radchenko, B.M. Kostishko, V.V. Svetuhin, V.D. Risovany

Research of beta-voltaic effect on junction p-n-structures with beta source nickel-63 is conducted. The model of the radiation-enhanced energy source is presented and numerical calculations on its basis are done. Calculation data allow to define the most effective junction p-n-structure for creation of the radiation-enhanced energy source
Keywords: beta-voltaic effect, radiation-enhanced energy source, radioisotopes, microelectromechanical systems

State and development  trends of pulse dosimetry of accelerating simulators

V.N. Ulimov, S.Yu. Nozdrachev, V.N. Sinev, V.V. Kazakov, N.I. Terentyev

Necessity and importance of dynamic dosimeter measurements on accelerating simulators are shown. Existing techniques of dynamic dosimeter measurements is analyzed. Development ways of techniques in two directions are planned, tasks to solution are defined. It is offered to use new small-size diamond and silicon detectors. Restoration necessity of signal distorted by inertia of measuring channels is shown. Questions of electronic dosimetry of accelerators are considered
Keywords: radiation, dosimetry, automation of measurements