title: [New investigations about the activation of air by the 42-Mev continuous radiation of a betatron (author's transl)].
abstract: Measurements of the activity of urea are a simple and reproducible method to determine the activation of air produced by the continuous radiation of a medically used accelerator [3,4]. The authors studied the activity produced by photonuclear induction using a 42 MeV betatron under unfavorable irradiation conditions. The activity measured per individual irradiation is 1.56 x 10(5) Bq 13N and 4.93 x 10(5) Bq 15O. The limit values indicated in the Radioprotection Regulation are not reached if an intensive air exchange and a waiting-time between the end of the irradiation and the entering of the irradiation room is guaranteed.
mesh_terms: D000388:Air; D008433:Mathematics; D010315:Particle Accelerators; D011835:Radiation Protection; D014508:Urea
chemical_list: D014508:Urea
vernacular_title: Neue Untersuchungen zur Luftaktivierung durch die 42-MeV-Bremsstrahlung eines Betatrons.