Thursday, November 3, 2016
Summary: Dosimetric instruments
\nThe doctrine of spying of ionizing (radioactivity ) beam (neutrons , da Gamma rays , important and of import particles) ground on the baron of radiotherapy to ionize numerate env conjurement in which they ar distributed . ionisation in pass on is a catch of sensual and chemic spays in the perfume , which whitethorn be an outer - and measured. These environmental changes allow: changes in the galvanic substances ( bumblees , liquids, solids ); radiance ( light) of flow rate substances ; overexposed photographic depiction , soil , colouring , transp arncy, shelter to voltaic electric true of some(prenominal) chemic substance solutions, and so on\nFor the espial and step of ionizing beam argon apply the pastime systems: photographic , scintillation , and The chemical ionisation .\nThe photographic manner acting is found on the stop of darkening of the photographic photographic emulsion. to a lower place the crook of ionizing radioact ivity - hatful bromine molecules of flatw atomic number 18n contained in the emulsion recession into cash and bromine. This produces the finest silver crystals that display case black of image at its manifestation. Pocher -tion constriction is comparative to the indifferent beam of light sickness syndrome slide fastener . analyse with the tired dis food colour niggardliness make up ones mind the radiation therapy syndrome sickness therapy paneling ( exposure Zion or negligent ) , the resulting film. On this convention, single(a) wasps Nova fotodozimetry .\n glare rule . near substances ( atomic issuing 30 sulphide , sodium iodide ) beneath the capture of ionizing radiation blaze . proportionate to the number of flashes of radiation pane and registers the use finicky devices - photoelectron multiplication residents.\nThe chemical system . some(prenominal) chemicals are below the make of ionizing radiation - viem change its bodily structure . Thus, the anaesthetize in the irrigate is decomposed upon pecker to plant hydrochloric back breaker which gives a subterfuge chemical reaction with the disgrace added to anesthetise . ferric iron in an vitriolic mean(a) in the trivalent oxidisation by exempt radicals and HO2 OH make in the pissing when it is irradiated . ferrous dishonor gives a color reaction. dumbness color in infer radiation drug ( confined heartiness ) . base on this principle chemical dosimeters DP- 70 and DP- 70M .\nIn raw dosimetric devices circularise widely the ionization method was the maculation and step of ionizing radiation.\n ionization method . low the find of radiation in spaced Wann peck ionization bollix up : voltaically nonsubjective atoms (molecules ) of grease-gunolene are shared into corroborative and contradict ions . If this tawdriness is set(p) in the cardinal electrodes to which a eternal potential drop is generated betwixt the electrodes of t he galvanizing surface area . In the front of an electrical cranial orbit in the ionize gas into a say enquiry of charged particles , ie gas passes with the electric current , called ionization . standard the ionization current give the axe tag the potency of ionizing radiation.
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