A method for manufacturing a high dielectric constant insulating film made of a metal oxide on a silicon substrate is provided using a material gas mixture containing an oxidizing agent without forming a silicon oxide layer on a silicon substrate. Portions of the luminescent material may be covered by different converters to allow for doses of different radiations to be discriminated. The outer potting container is lined with an inner potting container, the material of which has a diamond pyramid hardness number below 500 and a melting point between 45 degrees Celsius and 200 degrees Celsius. The first station preferably stores its outgoing signals in memory and then subtracts out these stored signals to eliminate the its own-signal interference.