Radioactive Gas Production from the R.P.I. Electron Linear Accelerator

The energy and average power of the R.P.I. electron linear accelerator (Linac) are great enough that radioactive gases are produced. During two years of operation 150 and 13N have been detected, identified, and measured quantitatively. This paper describes the air handling and monitoring systems, measurement of the gaseous activities, concentration guides developed at R.P.I. for these isotopes, and operating procedures used for control of the activity.