[1986 - 1996年切尔诺贝利核电站30公里区域内人工和天然放射性气溶胶的粒径分布]

[Size distribution of artificial and natural radioactive aerosols in the 30-kilometer zone of the Chernobyl AES in 1986-1996].

作者信息

Ogorodnikov B I, Skitovich V I, Budyka A K

机构信息

State Research Center of Russia, Karpov Institute of Physical Chemistry, Moscow.

出版信息

Radiats Biol Radioecol. 1998 Nov-Dec;38(6):889-92.

PMID:9889783

Abstract

During 10 years after the Chernobyl accident the systematical measurings of size distributions of radioactive aerosols were conducted near the block-IV. In the ground level the active median aerodynamic diameters (AMAD) of 137Cs aerosols were ranged from 0.4 up to 1.4 microns in May, 1986. In that time the aerosol carriers of radioactive Te, Ru and I had AMAD 0.3 ... 0.5 micron. During 1987-1996 AMAD of aerosol of fission products of the Chernobyl accident was stable in range 4 ... 7 microns. Simultaneously concentrations and size distributions of natural radioactive aerosols were determined. The cosmogenic 7Be aerosols had AMAD 0.5 ... 0.7 micron. AMAD of the aerosols of daughter products of radon and thoron was found 0.4 ... 0.6 micron.

摘要

在切尔诺贝利事故后的10年里，在四号反应堆附近对放射性气溶胶的粒径分布进行了系统测量。1986年5月，地面上137Cs气溶胶的活性中位空气动力学直径（AMAD）在0.4至1.4微米之间。那时，放射性碲、钌和碘的气溶胶载体的AMAD为0.3……0.5微米。在1987 - 1996年期间，切尔诺贝利事故裂变产物气溶胶的AMAD稳定在4……7微米范围内。同时还测定了天然放射性气溶胶的浓度和粒径分布。宇宙成因的7Be气溶胶的AMAD为0.5……0.7微米。氡和钍子体产物气溶胶的AMAD为0.4……0.6微米。