title: 115In as a probe for the characterization of therapy bremsstrahlung beams and the detection of photoneutrons.
abstract: Variation of the photoactivation rate across radiation fields of three different bremsstrahlung beams of two medical accelerators has been measured, making use of the photonuclear reactions in natural indium probes: 115In(y,y')115mIn and 115In(y,n)114mIn. The third nuclear reaction, 115In(n,y)116mIn, was used to detect the presence of neutrons in the photon beam and to estimate the spatial distribution of thermal and fast neutrons in the patient plane as a function of collimator opening.
authors.affiliation: Institute of Physics, University of Novi Sad, Yugoslavia.
authors.forename: M
authors.initials: M
authors.lastname: Krmar
authors.forename: J
authors.initials: J
authors.lastname: Slivka
authors.forename: I
authors.initials: I
authors.lastname: Bikit
authors.forename: L
authors.initials: L
authors.lastname: Conkić
authors.forename: A
authors.initials: A
authors.lastname: Rudić
mesh_terms: D002138:Calibration; D005214:Fast Neutrons; D005720:Gamma Rays; D006801:Humans; D007205:Indium Radioisotopes; D009502:Neutrons; D010315:Particle Accelerators; D017785:Photons; D011882:Radiotherapy, High-Energy
chemical_list: D007205:Indium Radioisotopes