Particle Size Fractionation of Airborne Gamma-Emitting Radionuclides by Graded Filters

15 January 1965

journal article
other
Published by American Association for the Advancement of Science (AAAS) in Science

Vol. 147 (3655) , 290-292
https://doi.org/10.1126/science.147.3655.290

Abstract

Three filters in series were employed to separate into groups, according to size, the nuclear debris suspended in air at ground level. The concentrations of airborne Ce¹⁴⁴-Pr¹⁴⁴, Sb¹²⁵, Cs¹³⁷, Zr⁹⁵-Nb⁹⁵, Mn⁵⁴, and Ru¹⁰⁶-Rh¹⁰⁶ in each size group were determined by gamma spectral analysis. Particles having diameters of less than 1.75 microns contained a minimum of 88 percent of the total activity.

Keywords

This publication has 3 references indexed in Scilit:

CHARACTERISTICS OF AIR FILTER MEDIA USED FOR MONITORING AIRBORNE RADIOACTIVITY
Published by Office of Scientific and Technical Information (OSTI) ,1964
Sizing of the Fall-Out at Vienna
Nature, 1962
Debris from Tests of Nuclear Weapons
Science, 1961