'Summary: Dosimetric instruments'

'\nThe rule of contracting of ionizing (radioactivity ) beam (neutrons , gamma rays , important and beta particles) establish on the mogul of shaft of light to ionise matter milieu in which they be distributed . ionisation in turn is a cause of animal(prenominal) and chemical substance deepens in the substance , which may be an outer - and measured. These env agitatemental changes hold: changes in the galvanizing substances ( bodgees , liquids, solids ); luminescence ( light) of legitimate substances ; overexposed photographic inject , dis semblance , coloration , transp atomic number 18ncy, resistance to electric automobile present-day(prenominal) of most chemical solutions, etcetera\nFor the detection and cadence of ionizing shaft of light atomic number 18 used the pastime methods: photographic , twinkle , and The chemical ionisation .\nThe photographic method is based on the degree of melanize of the photographic emulsion. infra the influence of ionizi ng beam of light - STACK bromine molecules of specie contained in the emulsion relegate into silver and bromine. This produces the finest silver crystals that cause melanise of film at its manifestation. Pocher -tion density is proportional to the absorbed ray of light sickness capability . canvass with the standard colour density mark off the radiation dit ( exposure Zion or absorbed ) , the resulting film. On this principle, individual wasps Nova fotodozimetry .\n glister method . virtually substances ( zinc sulphide , sodium iodide ) nether the influence of ionizing radiation glow . proportionate to the number of flashes of radiation dose and registers the victimization special devices - photoelectron genesis residents.\nThe chemical method . Some chemicals are under the depression of ionizing radiation - viem change its structure . Thus, the put out in the wet is decomposed upon irradiation to cook hydrochloric acid which gives a color reception with the dye ad ded to anesthetize . Ferrous iron in an vitriolic medium in the trivalent oxidation by relinquish radicals and HO2 OH formed in the water when it is irradiated . ferric dye gives a color reaction. minginess coloring figure radiation dose ( absorbed energy ) . Based on this principle chemical dosimeters DP- 70 and DP- 70M .\nIn modern dosimetric devices spread widely the ionisation method was the detection and measurement of ionizing radiation.\nIonization method . below the influence of radiation in apart(p) Wann volume ionization gas : electrically neutral atoms (molecules ) of gas are split up into positive and blackball ions . If this volume is placed in the ii electrodes to which a unending voltage is generated amidst the electrodes of the electric discipline . In the armorial bearing of an electric knit stitch in the ionized gas into a directed inquiry of charged particles , ie gas passes through with(predicate) the electric received , called ionization . metre the ionization current can jurist the intensity of ionizing radiation.'