scope:

Sections of the report cover conceptual approaches to radiation protection C the limitation approach and the assessment approach; specification of radiation quality C in terms of linear energy transfer and lineal energy; and relative biological effectiveness (RBE) C autonomous and non-autonomous responses of cells and experimental findings. Brief appendices treat quantitative relations in radiation protection systems, the relationship between distributions in linear energy transfer and lineal energy, and theoretical considerations on RBE. Another appendix includes a comprehensive evaluation of the experimental data on RBE of high- vs. low-LET radiation.