【作者】 温瑞媛； 常辉； 王祥云； 高宏成；

【Author】 WEN Rui-yuan,CHANG Hui,WANG Xiang-yun,GAO Hong-cheng (Department of Technical Physics,Peking University,Beijing,100871)

【机构】 北京大学技术物理系；

【摘要】 用动态模型方程描述了裂片核素¹³⁷Cs(实验中用¹³⁴Cs模拟)随地下水流在花岗岩中的渗透迁移过程。由渗透曲线拟合求得模型参数——综合扩散-弥散系数和吸附速率常数,并在自行设计的水浴恒温槽中,进行了¹³⁴Cs在花岗岩片上的吸附动力学研究。测定不同,pH值和不同温度下的吸附曲线,推算出相应条件下的吸附速率常数及不同pH值时的吸附能。更多还原

【Abstract】 Abstract The permeability of ¹³⁷Cs in granite is studied with ¹³⁴Cs as its simulation nuclide and the kinetic curves of adsorption are measured in a specially designed cell at different pH and temperatures.The kinetic constants and activation energy are obtained.The corresponding kinetic equation describing the migration of ¹³⁷Cs is suggested. A series of the important parameters of diffusion,permeability and adsorption are determined.The calculated and experimentally observed dates are compared and discussed.更多还原