Radon Emanation Dependence on Grain Configuration

概要

論文の詳細を見る
Very small pores called ‘nanopores’ play an important role in enhancement of radon emanation in grains. The concept of nanopores was originally proposed by Rama and Moore. The present paper has evolved this concept into more specific grain configurations to estimate radon emanation coefficients by theoretical calculations. These configurations cover combinations of nanopore geometry and radium distribution in grains. Radium is the parent nuclide of radon. Assuming isotropic emission of radon from its birthplace with recoil energy imparted by the decay of radium, the present calculation led to nearly the same high radon emanation coefficients as measured; these were as high as 0.18 under moist conditions. Therefore, it was theoretically verified that even small pores of nanometer size may contribute to high radon emanation.
一般社団法人日本原子力学会の論文
2004-10-25