A radiation-resistant diamond-based detector for registration of fluxes of particles of cosmic radiation with low linear energy transfer is developed and investigated. The device may be used to ...register gamma radiation of water-moderated, water-cooled nuclear energy reactors. The characteristics of a detector when exposed to beta radiation are determined and modeling of the signals of the device when exposed to beta and gamma radiation is performed. The use of a multi-layer diamond structure makes it possible to increase the signal-to-noise ratio and expand the dynamic range of measurements of the linear energy transfer of cosmic radiation particles.
This work is devoted to study of the diamond based radiation detectors. Experiments were carried out with two types of detectors: based on a thin diamond film and on a composite diamond plate. The ...following types of ionizing radiation has been used in experiments: beta radiation of 90Sr - 90Y, fission fragments and alpha particles of 252Cf, and Kr ions obtained at the particle accelerator. It is shown that the developed thin-film diamond based detector effectively registers heavy charged particles, whereas beta, neutron and gamma radiation does not give a significant contribution to the detector signals. Those type of detectors are proposed for measurement of heavy charged particles linear energy transfer in diamond. The multilayer diamond based detector (detector with a composite diamond plate) showed improved charge collection efficiency values in compare with the detection with a single diamond plate.
Were conducted a series of experiments, the purpose of which had to verify the mathematical model of the radiation environment sensor. Theoretical values of the beta particles count rate from 90Sr - ...90Y source registered by radiation environment sensor was compared with the experimental one. Theoretical (calculated) count rate of beta particles was found with using the developed mathematical model of the radiation environment sensor. Deviation of the calculated values of the beta particle count rate does not exceed 10% from the experimental.
Hydrocarbon pollution of wastewater is unavoidable in industry and transportation. Pollution monitoring, which forms part of environmental protection, may be based on measuring the optical density of ...water samples. In the present work, a device for this purpose based on a diamond UV photodetector and a nonmonochromatic UV source is described.
A mathematical model of an ionizing-radiation monitor based on diamond detectors has been developed. Experimental investigations of the monitor were carried out, and, using their results, the model ...was verified and optimized. It was demonstrated that the developed model makes it possible to calculate data of sensor measurements with an accuracy of 10% or better. These results will be used to reconstruct cosmicradiation spectra according to the output data of the monitor.
Automatic control, monitoring, and diagnostic systems are essential to technological progress and the improvement of machine-tool design. In turn, such systems rely on sensors, which collect ...information regarding mechanical quantities. Such sensors are also subject to the destabilizing physical factors that accompany machine-tool operation. In the present work, a diamond-based pressure sensor is described, and an appropriate manufacturing technology is outlined. Capacitive pressure sensors with a diamond membrane are produced and tested. The sensor characteristics are as follows: capacitance 8 pF; sensitivity 0.38 pF/kPa.
Diamond-based pressure sensors Altukhov, A. A.; Gladchenkov, E. V.; Feshchenko, V. S. ...
Russian engineering research,
06/2017, Volume:
37, Issue:
6
Journal Article
Peer reviewed
Instruments for pressure monitoring are widely used today, in fields such as the aerospace industry, machine tools, and automated control systems. The pressure sensors employed must meet high ...standards in terms of their range, precision, reliability, and operational stability. Sensors are essential to measuring instruments and to monitoring and control systems. In the present work, a diamond-based pressure converter is described.
In mining, it is important to ensure effective monitoring and to improve the precision of the geophysical instruments used in mineral prospecting. The electrophysical and structural optimization of ...instruments for monitoring the neutron yield of borehole generators in neutron–neutron logging systems is considered. Diamond detectors have been developed and successfully employed for this purpose. The expanded use of diamonds, especially in instruments, improves the utilization of natural resources. In regular equipment for monitoring the neutron yield of borehole generators in neutron–neutron logging systems, the consequences of introducing Russian diamond detectors are studied. Specifically, the influence of the ambient parameters on the borehole instrument (temperature stability of the diamond detector in the range 20–140°C) is determined; and the linearity of the conversion characteristic of the fast-neutron monitor in the system is investigated by measuring the fluctuation of the output-signal amplitude in the range 20–140°C.
All production processes are associated with human action on the environment. Water pollution is an inevitable consequence of economic activity and a major environmental problem. Effective monitoring ...of wastewater pollution is necessary to prevent the degradation of our water resources. The use of instruments based on natural diamonds to monitor water pollution is considered in the present work. The expanded utilization of natural diamonds is itself an aspect of effective resource management.
In mining, it is important to improve the precision of geophysical instruments in mineral prospecting, especially in the exploration of oil and gas fields. The possibility of creating instruments for ...monitoring the neutron yield of a borehole neutron generator in neutron–neutron logging systems is considered. One possibility is to employ detectors based on natural diamonds, which are a valuable resource. Their use in hightech geophysical instruments for prospecting may be regarded as a valuable step in the efficient utilization of natural resources, which is an important goal at this time. Experience shows that Russian-made diamond detectors of the proposed design are satisfactory replacements for the instruments currently used to monitor the yield of a borehole neutron generator in neutron–neutron logging systems. Tests of the detectors in the AINK-43M pulsed neutron–neutron logging system demonstrate the improved productivity and precision of the measurement system.
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