. "0"^^ . "1669"^^ . . . "2005-01-01+01:00"^^ . "2007-12-01+01:00"^^ . "1669"^^ . . . . "1"^^ . "Low energy of signal electrons, especially backscattered electrons, is the reason of lower detectors yield. While the problem of secondary electrons detection was successfully solved by their extraction using a magnetic field and detection in objective lens, efficient detection of backscattered electrons remains unsolved. The project will be aimed on the development of an yttrium aluminium perovskite scintillation detector. The initial energy of backscattered electrons of 0.7-3 kV is the energy, on which the light yield of scintillators decreases. Backscattered electrons with this energy will be accelerated to scintillator by electrostatic field and secondary electrons with maximal energy of 50 eV will be filtered by energy filter or by magnetic field. The influence of different objective lenses on signal electrons trajectories and on detection efficiency of developed detector will be studied in the project. The image interpretation will be focused on the study of contrast mechanisms."@en . "low voltage scanning electron microscopy; detection of signal electrons; backscattered electrons; scintillation detector; yttrium aluminium perovskite; immersion objective"@en . "Detekce sign\u00E1ln\u00EDch elektron\u016F p\u0159i n\u00EDzk\u00FDch energi\u00EDch prim\u00E1rn\u00EDho svazku v rastrovac\u00ED elektronov\u00E9 mikroskopii"@cs . . . . . "Detection of signal electrons in scaning electron microscopy with low primary beam energies"@en . "11"^^ . . . "N\u00EDzk\u00E1 energie sign\u00E1ln\u00EDch elektron\u016F, zejm\u00E9na zp\u011Btn\u011B odra\u017Een\u00FDch elektron\u016F je p\u0159\u00ED\u010Dinou sn\u00ED\u017Een\u00E9 v\u00FDt\u011B\u017Enosti detektor\u016F. Zat\u00EDmco probl\u00E9m detekce sekund\u00E1rn\u00EDch elektron\u016F byl \u00FAsp\u011B\u0161n\u011B vy\u0159e\u0161en jejich ods\u00E1v\u00E1n\u00EDm v magnetick\u00E9m poli a detekc\u00ED v objektivov\u00E9 \u010Do\u010Dce, \u00FA\u010Dinn\u00E1 detekce n\u00EDzkoenergiov\u00FDch zp\u011Btn\u011B odra\u017Een\u00FDch elektron\u016F dosud z\u016Fstala nevy\u0159e\u0161ena. Projekt bude zam\u011B\u0159en na vypracov\u00E1n\u00ED scintila\u010Dn\u00EDho detektoru na b\u00E1zi nov\u011B vyvinut\u00E9ho monokrystalick\u00E9ho ytrito hlihit\u00E9ho perovskytu. Zp\u011Btn\u011B odra\u017Een\u00E9 elektrony o po\u010D\u00E1te\u010Dn\u00ED energii 0,7 - 3 kV, tedy energii, p\u0159i kter\u00E9 kles\u00E1 sv\u011Bteln\u00FD v\u00FDt\u011B\u017Eek v\u0161ech scintil\u00E1tor\u016F, budou urychleny elektrostatick\u00FDm polem ke scintil\u00E1toru a sekund\u00E1rn\u00ED elektrony budou odfiltrov\u00E1ny energiov\u00FDm filtrem nebo magnetick\u00FDm polem. V r\u00E1mci projektu budou studov\u00E1ny vlivy r\u016Fzn\u00FDch objektivov\u00FDch \u010Do\u010Dek na trajektorie sign\u00E1ln\u00EDch elektron\u016F a na detek\u010Dn\u00ED \u00FA\u010Dinnost vyvinut\u00E9ho detektoru. Obrazov\u00E1 interpretace bude zam\u011B\u0159ena na studium kontrastn\u00EDch mechanism\u016F."@cs . "11"^^ . "0"^^ .