2010 г., Выпуск 1

A.M. Chlenov, N.G. Mordasov, D.M. Ivashchenko

Development direction of experimental base of pulse gamma radiation simulation
in technology of radiation tests
The analysis of use of different types of heavy-current electron accelerators in practice of pulse gamma radiation simulation for tests of element base and electronic radio equipment on radiation resistens is made. Universality of use heavy-current accelerators of direct action in comparison with linear accelerators is shown. Necessity of use of high-efficiency pulse radiation sources is proved. The direction of unification of test units for pulse gamma radiation simulation on the basis of direct action accelerators, and also a way of decrease in financial expenses to technologies of radiating tests is defined.

Keywords: pulse gamma radiation, accelerator, bremsstrahlung.

B.P. Murzov, S.Y. Nozdrachev

About certification of the test equipment for radiation testing
Certification procedure of the test equipment, certified characteristics of the equipment and methods of their control, and also the lacks of certification process and the recommendation about their elimination are described.

Keywords: test equipment, certification.

V.N. Ustjuzhaninov, T.N. Frolova, V.I. Butin

Estimations of achievable values of safety factors in calculated-experimental models of timing resource of the spacecraft electronic
Combined influence of processes of mode and radiation degradation of electric parameters of electronic means on period of spacecraft active occurrence is considered. Relations between estimated values of safety factors on timing resources in not radiation and radiation conditions defining achievable safety estimated values on period of spacecraft active occurrence are established.

Keywords: period of active occurrence, spacecraft, time to failure, safety factor.

N.N. Panyushkin, N.N. Matveev

Model of the charge output in SIO₂ by ionizing radiation
The mathematical microlevel model is presented for forecasting of a part of electron-hole pairs which have kept out of initial recombination in SIO₂ depending on photon energy, dose rate, electric field intensity and temperature. Comparison of simulation results with experiment is presented.

Keywords: ionizing radiation, dose rate, electron-hole pairs, recombination, electric field, energy, photon.

V.N. Ustjuzhaninov, T.N. Frolova, V.I. Butin

Theoretical models of power switches IGBT radiation resistance
The calculation method of power switches radiation resistance by structure IGBT example under influence of continuous or pulse radiations is considered.

Keywords: power switches, radiation resistance, resistance calculation methods.

A.G. Kadmensky, E.P. Morozova, L.P. Stepanenkova

Coherent scattering of heavy ions in crystals as the reason of the abnormal energy release in elements of solid-state electronics of spacecraft by cosmic rays treatment
The theory of coherent and incoherent scattering of heavy ions in crystals by dumping-effect is developed and borders of its prevalence over multiple scattering at axial channeling in silicon are defined. For its use in difficult ion dynamics in continuous crystal potential with initial conditions, corresponding to an omnidirectional flow at the surface, that reflects cosmic rays property, the formalism of scattering dependence from impact collision parameter with the nuclear chains, earlier tested for protons, in particular, at the description of anomalies of energy release in a thick crystal and effects quasichanneling is offered. Results of computer simulation coordinate with well-defined experimental data on calcium and phosphorus ions range, saved up in the field of ion implantation.

Keywords: spacecraft, heavy ions, coherent and incoherent scattering, computer simulation.

M.S. Gorbunov, G.I. Zebrev, P.N. Osipenko, B.V. Vasilegin, V.N. Iljaguev

Comparison of different variants of SOI MOS-transistors topology for radiation-resistance IC designing
Radiation resistance of partially depletion SOI MOS-transistors to full dose effects for different variants of topological realization and electric modes by radiation treatment is investigated. The decision of radiation induced leakage problem is accentuated. The physical simulation of observable effects is done.

Keywords: MOS-transistors, кadiation resistance.

V.S. Anashin, V.V. Emeljanov, G.I. Zebrev, I.O. Ishutin, N.V. Kuznetsov, A.N. Petrov

Software system “OSOT” for forecasting of single errors intensity in the space conditions
The software system "OSOT" intended for test-data processing of electronic component base, radiation situation simulation in random orbit, ionizing radiation space resistance calculation in a part of high-energy protons and heavy charged particles is considered. Results of comparison with other popular programs and the flight data are presented.

Keywords: ionizing radiation, space, single effects, test desk, software system, algorithm.

E.N. Vologdin

Experimental definition of radiation-induced alteration of recombination losses in active base of the bipolar transistors
The technique of experimental definition of recombination losses in active base of the bipolar transistors is offered, allowing to estimate their contribution to the overall recombination losses by radiation.

Keywords: bipolar transistor, active base, recombination losses.

A.S. Puzanov, S.V. Obolensky

Influence of spread of electric characteristics of the bipolar transistor on its breakdown by voltage impulse treatment
On the basis of measured current-voltage and capacitance-voltage characteristics of samples of multisection powerful uhf of the bipolar transistor is shown that fluctuations of impurity defect sample structure can lead to considerable differences on voltage impulse resistance level. The technique of nondestructive express sorting of samples is offered. Results of simulation of carrier transport through collector-junction diode by voltage impulse treatment confirm adequacy of the introduced approach.

Keywords: bipolar transistor, voltage impulse, sample sorting.

E.N. Vologdin, D.S. Smirnov

Technique of the estimated value of the radiation-induced alterations of recombination losses in active base of drift transistors
Calculation procedure of radiation-induced alterations of recombination losses in active base of the drift transistors, based on measurement of informative parameters of devices is offered.

Keywords: radiation, drift transistor, recombination losses, active base.

M.N. Zubarev, I.B. Jashanin, A.V. Skobelev, N.N. Kiselyov

Forecasting of CMOS SOS-microcircuits resistance to the absorbed dose treatment on “p-tub” sheet resistance of test structures

Correlation dependence of dose degradations level of a static consumption current of CMOS SOS-microcircuits from “p-tub” sheet resistance of test MOS-structures is investigated.

Keywords: “p-tub” resistance, microcircuits, consumption current, absorbed dose resistance.

I.I. Shagurin, A.V. Lebedev, N.G. Radovskij

Functional diagnostics of the processor module failures by radiation tests of VLSI microcontrollers
Methods of functional testing of VLSI microcontrollers by radiation tests are considered. The test model of the microcontroller and a test programs shaping technique by means of the functional testing table is described. Cyclorama variants providing functional failures location are offered. For failure diagnostics is used the method of virtual functional segments which allows to detect the blocks responsible for failure occurrence.

Keywords: radiation resistance, functional diagnostics, processor module, microcontroller.

Mio Win, V.D. Popov, A.V. Skorodumova

Forecasting of radiation resistance of CMOS IC at low ionizing radiation dose rate
The result of change the threshold voltage of MOS-transistors in CMOS IC at low gamma radiation dose rate is presented.

Keywords: CMOS IC, radiation resistance, ionizing radiation.

N.K. Abrosimov, L.A. Vajshnene, A.S. Vorobjev, E.M. Ivanov, G.A. Riabov, M.G. Tverskoy, O.A. Shсherbakov

Experimental research of the created on synchrocyclotron neutron beam for radiation tests the electronic component base
On synchrocyclotron PNPI RAS on proton energy of 1000 MeV for radiation tests the electronic component base is created the neutron beam with a spectrum imitating a spectrum of atmospheric neutrons. The scheme for neutron obtaining and detecting is reduced. Results of measurements are informed.

Keywords: radiation tests, neutron beam, microelectronics.

A.P. Stepovik, V.S. Blinov, V.V. Otstavnov

Use of piezoelectric ceramics for researches of the thermoelastic voltages created in the sample by electron beam
The method of research with use of piezoelectric ceramics the thermoelastic voltages occuring in carbonic composites by absorption of electron energy of the powerful accelerator is considered. The optimum scheme of samples construction is chosen, the electric scheme of registration is analysed and refined. With use of electron beam an amplitude calibration of piezoelectric ceramics PZT-19 30 mm in diameter and thickness of 12 mm in the range of pulsed pressures ~ 0,01 - 0,2 GPа is done.

Keywords: piezoelectric ceramics, sensor, electron beam.

N.A. Ratahin, N.V. Zharova, I.V. Lavrinovich, V.K. Petin, V.F. Fedushchak, A.V. Fedjunin, S.V. Shljahtun, S.A. Tchaikovsky, A.A. Erfort

Heavy-current compact generators of short electric pulses for X-ray radiation
Compact generators of short pulses of X-rays are developed. Voltage range is 50–800 kV, current range is 3–700 kA, radiation pulse time span is 50-1 nanoseconds. Generators are developed on the basis of intrinsic hardware components – condensers and commutators. Parameters of heavy-current pulse condensers on voltage 50 and 100 kV, modes and results of their work in generators are resulted.

Keywords: generators of short electric pulses.

N.I. Terentev

Bremsstrahlung pulse form of accelerator LIU-10
Researches of the bremsstrahlung pulse form of accelerator LIU-10, deformed by inertial properties of the measuring channel are done. The measuring channel with detector SD2-01 and the cable communication line RК75-9-13 30 m long were used. As the recorder is used the digital oscillograph TDS3054 with cutoff frequency 500 MHz. Regenerations and model convolutions of the typical registered signals, and also pulse convolutions on the Berlage formula are done. Dependences of signal spreading factors and amplitude «upsetting» from the registered signal duration are investigated. Results of an estimation of influence on a dose of the time remote basic radiation impulse caused by aperiodic vibrations of a high voltage wave in accelerator line are described.

Keywords: accelerator LIU-10, pulse response characteristics, detector.