论文信息 - Measurement of fast neutrons produced by high-energy X-ray beams of medical electron accelerators.

Measurement of fast neutrons produced by high-energy X-ray beams of medical electron accelerators.

The fast neutron contamination associated with the 25 MV X-ray beam of a clinical linear accelerator and with the 19 MV X-ray beam of a betatron has been measured at the patient treatment location, using both fission fragment track detectors and silicon diode dosemeters. Measurements are made of the neutron fluence and dose, both in and out of the primary photon beam, at distances up to 60 cm from the central axis. Neutron distributions are similar for the linac and the betatron, with approximately ten times greater neutron dose in the X-ray field than at 20 cm outside it.

[1] P. Price,et al. a Versatile, Disposable Dosimeter for Slow and Fast Neutrons , 1963 .

[2] E J Axton,et al. Neutron production from electron accelerators used for medical purposes. , 1972, Physics in medicine and biology.

[3] E. Spring,et al. Neutron radiation produced by the 32 MeV roentgen beam of a medical betatron. , 1970, Acta radiologica: therapy, physics, biology.

[4] J. Ovadia,et al. Contaminant Dose from Incident Neutrons Associated with 22.5-Mev X-Rays from a Betatron , 1956 .

[5] W. Pohlit. [Measurement of neutron scatter irradiation on a 35 MeV betatron]. , 1960, Strahlentherapie.

[6] G. Kramer. The Semiconductor Fast-Neutron Dosimeter-Its Characteristics and Applications , 1966 .

[7] M. Kehrer,et al. A simple technique for making neutron measurements , 1972 .

[8] Laughlin Js. Use of 23-Mev medical betatron. , 1951 .

[9] P. Price,et al. Neutron Flux Measurement by Fission Tracks in Solids , 1965 .