1975•PubMedRequires access
The effect of ionizing radiations with different LET on survival and mutation in Chlorella.
N. P. Dubinin, V.A. Shevchenko, А. В. Рубанович, L.K. Vekshina, I.S. Sakovich
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Abstract
The exposure of cells of Chlorella vulgaris LARG-I to radiations with a low LET (consisting of gamma-rays) yielded sigmoid dose-effect curves, whereas the action of radiations with a high LET (multiply charged ions of carbon C12(+6), boron B11(+2), neon Ne22(+4), argon Ar40(+8)) gave exponential curves. The rate of visible mutations depends directly on dose in the case of radiations with a low LET; it is a maximum after the action of radiations with a high LET. The highest RBE is shown by multiply charged ions of carbon (dE/dX 2850 MeV g-1 cm2). With dE/dX higher and lower than that of carbon ions the biological efficiency of radiations is less.