Linear energy transfer

Diffusion cloud chamber with tracks of ionizing radiation (alpha particles) that are made visible as strings of droplets

Bragg curve of 5.49 MeV alpha particles in air. This radiation is produced by the decay of radon (222Rn); its range is 4.14 cm. Stopping power (which is essentially identical to LET) is plotted here versus path length; its peak is the

The ICRP used to recommend quality factors as a generalized approximation of RBE based on LET.

Linear energy transfer (LET) is a term used in dosimetry. It describes the action of radiation upon matter. It is identical to the retarding force acting on a charged ionizing particle travelling through the matter. It describes how much energy an ionising particle transfers to the material transversed per unit distance. By definition, LET is a positive quantity. LET depends on the nature of the radiation as well as on the material traversed.

单词	Linear energy transfer
释义	Linear energy transfer 英语百科 Linear energy transfer Linear energy transfer (LET) is a term used in dosimetry. It describes the action of radiation upon matter. It is identical to the retarding force acting on a charged ionizing particle travelling through the matter. It describes how much energy an ionising particle transfers to the material transversed per unit distance. By definition, LET is a positive quantity. LET depends on the nature of the radiation as well as on the material traversed.
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