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AbstractAbstract
[en] Results are presented concerning the formation, the evolution, the coagulation and the electrical charge of aerosols which form in natural filtered air containing only gaseous impurities, under the influence of solar light (photolysis) and of radioactive disintegrations (radiolysis). The modifications brought about in the aerosol by an increase in the sulphur dioxide content and in the natural radioactive gas content are studied. The work is then repeated with non-filtered natural atmospheric air. A comparison is also made of the behaviour of non-radioactive and radioactive particles (active thoron deposit). In conclusion, the possible consequences of these phenomena on the origin and the size distribution of particles occurring in the atmosphere is considered. (author)
[fr]
On expose les resultats obtenus sur la formation, l'evolution, la coagulation et la charge electrique des aerosols qui se forment dans l'air naturel filtre, ne contenant que des impuretes gazeuses, sous l'influence de la lumiere solaire (photolyse) et des desintegrations radioactives (radiolyse). On examine les modifications apportees a l'aerosol forme par l'augmentation de la teneur de l'air en anhydride sulfureux et en gaz radioactif naturel. Cette etude est ensuite reprise mais avec de l'air naturel atmospherique non filtre. On compare egalement le comportement des particules non radioactives et radioactives (depot actif du thoron). En conclusion, on examine les consequences que peuvent avoir ces phenomenes sur l'origine et la granulometrie des particules contenues dans l'atmosphere. (auteur)Original Title
Formation et evolution des aerosols dans l'air filtre et dans l'air naturel action de la radioactivite
Primary Subject
Secondary Subject
Source
Jun 1968; [77 p.]; 52 refs.; These Docteur Es-Sciences
Record Type
Report
Literature Type
Thesis/Dissertation
Report Number
Country of publication
ALPHA DECAY RADIOISOTOPES, CHALCOGENIDES, CHEMICAL RADIATION EFFECTS, CHEMICAL REACTIONS, COLLOIDS, DECOMPOSITION, DISPERSIONS, EQUIPMENT, EVEN-EVEN NUCLEI, FLUID FLOW, GAS FLOW, HEAVY NUCLEI, HYDROGEN COMPOUNDS, INORGANIC ACIDS, INORGANIC COMPOUNDS, ISOTOPES, MEASURING INSTRUMENTS, NUCLEI, OXIDES, OXYGEN COMPOUNDS, PARTICLES, PARTICULATES, PHOTOCHEMICAL REACTIONS, POLLUTION CONTROL EQUIPMENT, RADIATION DETECTORS, RADIATION EFFECTS, RADIATIONS, RADIOISOTOPES, RADON ISOTOPES, SECONDS LIVING RADIOISOTOPES, SIZE, SOLS, STELLAR RADIATION, SULFUR COMPOUNDS, SULFUR OXIDES
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