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  Chemical Sensors 2013, 3: 6
  Research Article
 
Electron emission for nanodosimetry of ionizing radiation and gas sensing
  Yury Dekhtyara, Diana Krumpanea, Kristine Perovichaa, Renata Reisfeldb, Marina Romanovaa, Tsiala Saraidarovb, Alexandr Soudnikovicha, Indra Surkovaa  
     
a Institute of Biomedical Engineering and Nanotechnologies, Riga Technical University, Ezermalas Street 6k, Riga, Latvia
b Institute of Chemistry, Hebrew University of Jerusalem, Jerusalem, Israel

   
  Abstract  
  Photoelectron (PE) and thermostimulated exoelectron (TE) emission spectroscopies were explored for nanodosimetry of electron radiation and gas sensing. Lead sulphide (PbS) nanocrystals embedded in zirconia (ZrO2) thin-films were employed to absorb electron radiation and changes in PE properties of the films in dependence on absorbed dose were studied. Gases benzene and isopentane were adsorbed onto silicon substrates and changes in PE and TE emission properties of the substrates were explored. The research demonstrated that both PE and TE are promising approaches to use in sensing applications.
     
  Keywords  
  Gas sensor; Radiation sensor; Nanodosimetry; Electron emission  
     
   
   
   
   
     

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