| 释义 |
quality factor
quality factor n (General Physics) a property of ionizing radiations that affects their ability to cause biological effects. For weakly ionizing radiations such as gamma rays it has value 1 whilst for alpha rays it is about 20. Former name: relative biological effectiveness
quality factor
quality factor[′kwäl·əd·ē ‚fak·tər] (nucleonics) The factor by which absorbed dose is to be multiplied to obtain a quantity that expresses on a common scale, for all ionizing radiations, the irradiation incurred by exposed persons. (physics) Q quality factor
qual·i·ty fac·tor (QF), a factor by which absorbed radiation doses are multiplied to obtain, for radiation protection purposes, a quantity that expresses the approximate biologic effectiveness of the absorbed dose. Compare: RBE, relative biologic effectiveness. qual·i·ty fac·tor (kwah'li-tē fak'tŏr) Used in radiation protection to account for the differences in the biologic effects from various types of radiation. quality factor Abbreviation: Q
In radiology, a scale used to account for the biological effects of different radiations. Factors include beta, electron, and gamma x-radiation (Q = 1), thermal neutrons (Q = 5), and alpha neutrons and protons (Q = 20). See also: factorFinancialSeefactorAcronymsSeequick fix |