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 ## For homogenous calorimeters
 
- *  G4_CESIUM_IODIDE: cesium iodide, an inorganic crystal scintillator with a density of 4.51 g/cm3 and a refractive index of 1.79. Cost: about 2 CHF/cm3
+ *  G4_CESIUM_IODIDE: cesium iodide, an inorganic crystal scintillator with a density of 4.51 g/cm3 and a refractive index of 1.79. radiation length about 1.9 cm. Cost: about 2 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