excellence in inorganic scintillators to Proteus index
LYSO YSO YAP BGO CdI:Tl LSO:Ce PWO LiI:Eu organics
  BGO crystals  &  assemblies
          BGO ingot                   BGO elements.          
  BGO ingot   Proteus BGO elements  
         
  BGO ingot shown above originally
sourced by, Institute of Inorganic Chemistry,
Siberian Branch, Russian Academy of Science.
"http://www.che.nsk.su/products_ru/" 		            BGO array            
    BGO array  
  8 x 4 BGO crystals array detector by
2.80mm x 6.95mm x 30.00mm elements
with 0.2mm (vert) and 0.1mm (horiz)
optical insulation spacing. 		   
         
  physical and scintillation properties of BGO
  crystal Type cubic   cleavage plane none
  effective Z# 83   density 7.13 g / cm3
  melting point 1,050 °C   hardness [Moh] 5
  hygroscopicity none   peak wavelength 480nm
  decay constant 300 nSec   reflactive index ( @480nm ) 2.15
  afterglow ( after 3mSec ) < 0.005%   Light output  ( NaI(Tl)=100% ) 15% ~ 20%
  calculated photopeak efficiency for NaI(Tl) vs BGO
  NaI(Tl) 1" thick BGO 1" thick NaI(Tl) 2" thick BGO 2" thick
186keV   97% 99%+ 99%+ 99%+
1.46MeV   35% 62%   58%   85%  
2.614MeV   30% 53%   51%   78%  
   
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