. "0"^^ . . "http://www.isvav.cz/projectDetail.do?rowId=GA202/99/0151"^^ . "Projekt se zab\u00FDv\u00E1 aktu\u00E1ln\u00ED problematikou dozimetrie, zejm\u00E9na z pohledu perspektivn\u00EDho vyu\u017E\u00EDv\u00E1n\u00ED svazk\u016F nabit\u00FDch \u010D\u00E1stic v terapii. Jeho v\u00FDstupem je \u0159ada origin\u00E1ln\u00EDch experiment\u00E1ln\u00EDch v\u00FDsledk\u016F. Ty byly publikov\u00E1ny ve form\u011B 3 prac\u00ED v recenzovan\u00FDch mezin\u00E1rod"@cs . "1"^^ . . "Experiment\u00E1ln\u00ED studium distribuce energie z\u00E1\u0159en\u00ED na \u00FArovni mikro- a nanodozimetrie pro radiobiologii, radioterapii a radia\u010Dn\u00ED ochranu" . . . "0"^^ . "Experimental study of the ionizing energy distributions in the micro- and nanodosimetry scale for radiobiology, radiotherapy and radiation protection"@en . "GA202/99/0151" . . . . . . . . "Mikro- a nano- dozimetrie p\u0159edstavuj\u00ED jeden z hlavn\u00EDch p\u0159\u00EDstup\u016F, kter\u00FDmi se fyzika sna\u017E\u00ED nal\u00E9zt p\u0159\u00ED\u010Diny rozd\u00EDl\u016F v biologick\u00FDch i dal\u0161\u00EDch \u00FA\u010Dinc\u00EDch absorpce energie ionizuj\u00EDc\u00EDho z\u00E1\u0159en\u00ED. Existuje jen m\u00E1lo metod experiment\u00E1ln\u00ED dozimetrie, kter\u00E9 dovoluj\u00ED ov\u011B\u0159it v\u00FDsledky teoretick\u00FDch v\u00FDpo\u010Dt\u016F rozd\u011Blen\u00ED energie na mikro- a nano\u00FArovni, tj.srovnateln\u00E9 s rozm\u011Bry citliv\u00FDch oblast\u00ED. Nejroz\u0161\u00ED\u0159en\u011Bj\u0161\u00ED, tzv. tk\u00E1niekvivalentn\u00ED proporcion\u00E1ln\u00ED po\u010D\u00EDta\u010De charakterizuj\u00ED p\u0159enos energie citliv\u00FDm objem\u016Fm s rozm\u011Bry \u0159\u00E1du mm. Ned\u00E1vno vyvinut\u00E9 tzv. bublinov\u00E9 detektory lze charakterizovat citliv\u00FDm objemem \u0159\u00E1dov\u011B 10 nm, kritick\u00FD objem pto tzv. detektory stop v pevn\u00E9 f\u00E1zi je oce\u0148ov\u00E1n na jednotky nm. V r\u00E1mci grantu budou z\u00EDsk\u00E1ny dal\u0161\u00ED znalosti o t\u011Bchto dvou nov\u00FDch metod\u00E1ch a budostanovena spektra p\u0159ed\u00E1van\u00E9 energie uveden\u00FDmi t\u0159emi metodami v p\u0159\u00EDrodn\u00EDch a dal\u0161\u00EDch pol\u00EDch ionizuj\u00EDc\u00EDho z\u00E1\u0159en\u00ED (kosmick\u00E9 z\u00E1\u0159en\u00ED, sm\u011Bsn\u00E1 pole neutron\u016F a z\u00E1\u0159en\u00ED gama, radioterapeutick\u00E9 svazky, aj.). Z\u00EDskan\u00E9 v\u00FDsledky budou srovn\u00E1v\u00E1ny s teoretick\u00FDmi v\u00FDpo\u010Dty" . "16"^^ . . "16"^^ . . "Micro- (nano-) dosimetry represents one of the basic approaches by which the physics tries to find the reasons for differences in biological and other effects of ionizing radiation. There exist only a few experimental methods of microdosimetry which permit to verify the results of theoretical calculations of energy distributions on micro- or nanoscales, i.e. on the level comparable with critical volumes dimensions. The most spread, tissue-equivalent proportional counters characterize radiation energy transfer in sensitive volumes of several mm. Recently developed bubble damage detectors can be characterized by the critical volume of several tens of nm, the sensitive volume of solid state nuclear track detectors is estimated to be several nm. Ithe frame of the grant we would acquire further knowledge of the two new methods mentioned above. We will establish energy deposition distributions by all three methods in natural and other radiation fields (cosmic rays, mixed neutron-gamma fields, radio"@en .