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 ## For homogenous calorimeters
 
- * G4_PbWO4: lead tungstate crystal (CMS ECAL). Lead tungstate has a very high density of 19.3 g/cm3 and a very short radiation length of 0.35 cm, which makes it suitable for compact and high-resolution electromagnetic calorimeters. Cost: about 3 CHF/cm3
+ * G4_PbWO4: lead tungstate crystal (CMS ECAL). Lead tungstate has a very high density of 19.3 g/cm3 and a very short radiation length of 0.89 cm, which makes it suitable for compact and high-resolution electromagnetic calorimeters. Cost: about 3 CHF/cm3