理想条件下氡及其子体运移新理论及其运移方程  

A new theory of migration of radon and its daughters in the ideal condition and their migration equation

作　　者：乐仁昌[1] 贾文懿[2] 吴允平[1] 

机构地区：[1]福建师范大学物理系,福州350007 [2]成都理工大学核工系,成都610059

出　　处：《物理学报》2003年第10期2457-2461,共5页Acta Physica Sinica

基　　金：福建省自然科学基金 (批准号 :A0 12 0 0 0 1)资助的课题~~

摘　　要：论述了氡及其子体运移的新理论 ,认为氡及其子体在垂直方向的运移机理是氡及其子体经α衰变所放出的α粒子减速后 ,将成为He核 ,He核可与氡及其子体形成团簇 ,当团簇在介质中所受的浮力大于其重量时 ,团簇便能自行向上运移 ,否则团簇就向下运移 .在此理论基础上建立了氡运移理论分布方程 ,并对运移方程进行了验证 .The study of radon release and migration is the basic theoretical issue for radon measurement, which has a close relationship with extensive applications in geoscience, environmental science and so on. In this paper, a new theory of migration of radon and its daughters has been discussed. The mechanism of vertical migration of radon and its daughters is: after alpha-particles emitted by radon and its daughters decelerate, they become He nucleus. The He nuclei can combine with radon and its daughters and form clusters. Because He is very light, it can make the specific gravity of the clusters lower than their buoyancy in the medium. As a result, the clusters will rise of their own accord. When the specific gravity of the clusters is higher than their buoyancy, the clusters will drop down. The theoretical distribution equation is established to describe radon migration and proved by experiment as well.

关 键 词：氡运移 子体运移 原子团簇 运移方程 运移机理 Α衰变 理想条件 

分 类 号：O175[理学—数学]