Characterization of radiolytic products from air at a high-energy electron-positron storage ring

Abstract The measurements of radiolytic products have been made by irradiating the air using a flow-type reaction chamber with synchrotron radiation at the KEK TRISTAN electron-positron colliding ring. The products have been observed to be O 3 , NO 2 and N 2 O 5 in dry air and to be O 3 , NO 2 , HNO 2 and HNO 3 in moist air, and their relative production yields have also been estimated.