Characteristics of plutonium oxide aerosols,
239PuO
2, were investigated. Plutonium oxide aerosols were generated by nebulizing the Pu (OH)
4 dispersed in HCl and passing the resultant droplets through a high temperature furnace to produce the PuO
2. When a nebulizer solution containing plutonium of 3.21×10
5Bq/cm
3 was used, aerosols with air concentration of 0.088Bq/cm
3 were produced. Size distributions of these aerosols were determined with a cascade impactor to be 0.17μm AMAD (Activity Median Aerodynamic Diameter) and 2.1 geometric standard deviation. When a nebulizer solution with plutonium concentration of 3.95×10
6Bq/cm
3 was used, 0.47μm AMAD was observed as expected roughly for the higher concentrated plutonium solutions. Observations of alpha trucks by autoradiograph and particle shape by scanning eletcron microscopy were also made for selected filter samples.
View full abstract