Measurements at a dose tiuk which is located in the radiation field netron, to be with detector in accordance with the terrain, it is because the amount of radiation energy absorbed detector is not only dependent on netron flux, but also on the type of intraksi occurred between the net and ran atom-atom mater; detector. One way for a ilustrasl dose measurements will be discussed with the thermal netron gamma detector film. Hasbuna Kifli Tenaga tetap pada Departemen FLsika F.M.I.P.A. lnstitut Teknologi Bandung. Tenaga Part-Timer di Pusat Reaktor Atom Bandung.