木材光引发自由基规律的研究

The Law of Light lnduced Free Radicals of Wood

木材在^(60)Co γ射线辐射下引发g值为2.019、2.029、2.027、2.016、1.999等几种自由基。ESR主谱自由基浓度远大于机械自由基。并与树种、辐射剂量等有关。主谱自由基相对强度随剂量x按指数率Y=1-e^(-ax)上升,当剂量增加到100KGy时趋于饱和,根据福建21个常见树种测试有明显的规律性。

When wood was radiated by Co-60γ, the free radicals g=2.019, 2.029,2.027,2.016and 1.999 were induced with the facts that the ESR density of the free radicals was much greater than the machemical one ,that it was related with the tree species and quantity of radiation,that the intensity of the free radicals of major spectrum increased exponentially according to y=1-e-ax and that when the quantity reached l00KGy , the increase was saturated, indicating, on the basis of free radical formation tests of 21 major tree species in Fujian, that it follows an obvious law.