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S. V. Chuklyaev Yu. N. Pepyolyshev V. A. Artem'ev 《Instruments and Experimental Techniques》2002,45(2):162-166
The design principles of a channel for measuring fluxes of thermal neutrons in a nuclear-reactor control and protection system are considered. The channel consists of a fission chamber, a set of boron-containing gas-filled ionization chambers, and an electronic unit that ensures a counting rate of fission pulses of up to 1 × 106 s–1. It is shown that the widest linear range is achieved in channels equipped with a fission chamber and a gas-filled ionization chamber with electrodes coated with natural boron. The channel allows for measurements of the thermal-neutron flux density in a range of 0.5 to 5 × 1011 cm–2 s–1. 相似文献
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Metal Science and Heat Treatment - 相似文献
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Metal Science and Heat Treatment - 相似文献
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Artem'ev B. V. Maslov A. I. Potapov V. N. Vedernikov M. B. 《Russian Journal of Nondestructive Testing》2003,39(6):459-464
A technique of taking into account modifications of the chemical composition of alloys in measuring the thickness of rolled non-ferrous metal products by X-ray thickness gauges is described. The possibilities and perspectives of using RIT10 X-ray thickness gauges in rolling mills with a wide assortment of treated non-ferrous metals and their alloys are demonstrated. The accuracy reached in measurements of tested objects of different thicknesses and chemical compositions is estimated and factors affecting the accuracy of device readings are indicated. 相似文献
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A. N. Artem'ev Yu. V. Krylov K. G. Potlovskii V. A. Rezvov L. I. Yudin Yu. L. Yupinov 《Atomic Energy》2002,93(6):964-966
A system for performing television monitoring of the position of the synchrotron radiation beam is discussed. The results of measurements of the stability of the beam position in several user channels are presented. It is shown that further work is needed to determine and eliminate the factors causing beam displacement. The results of measurements performed by different methods of the electron-beam dimensions in the accumulator are presented. 相似文献
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Metal Science and Heat Treatment - 相似文献
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