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Neutron dose equivalent next to the target shield of a neutron therapy facility using an LET counter
Author(s) -
Stinchcomb Thomas G.,
Kuchnir Franca T.
Publication year - 1981
Publication title -
medical physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.473
H-Index - 180
eISSN - 2473-4209
pISSN - 0094-2405
DOI - 10.1118/1.595029
Subject(s) - neutron , equivalent dose , electromagnetic shielding , physics , linear energy transfer , dosimetry , proportional counter , neutron temperature , nuclear physics , neutron source , neutron capture , nuclear medicine , optics , radiation , medicine , detector , quantum mechanics
The use of a spherical tissue‐equivalent proportional counter for measurements of the lineal energy ( y ) and derivations of the linear energy transfer (LET) for fast neutrons has the advantage of giving distributions of dose and dose equivalent as functions of either LET or y . A measurement next to the target shielding of the neutron therapy facility at the University of Chicago Hospitals and Clinics (UCHC) is described, and the data processing is outlined. The distributions are presented and compared to those from measurements in the neutron beam. The average quality factors are presented.