Particle size analysis of radioactive aerosols formed by irradiation of argon using 65 MeV quasi-monoenergetic neutrons.
The size distributions of 38Cl and 39Cl aerosols formed from the irradiation of argon gas containing di-octyl phthalate (DOP) aerosols by 65 MeV quasi-monoenergetic neutrons were measured to study the formation mechanism of radioactive aerosols in high-energy radiation fields. Both the number size distribution and the activity-weighted size distribution were measured using an electrical low-pressure impactor. It was found that the 35Cl and 39Cl aerosols are formed by attachment of the radioactive atoms generated by the neutron-induced reaction to the DOP aerosol particles.
Endo
A
A
Department of Health Physics, Tokai Research Establishment, Japan Atomic Energy Research Institute, Ibaraki. a.endo@popsvr.tokai.jaeri.go.jp
Noguchi
H
H
Tanaka
Su
S
Kanda
Y
Y
Oki
Y
Y
Iida
T
T
Sato
K
K
Tsuda
S
S
D000336:Aerosols; D000396:Air Pollutants, Radioactive / Q000009:adverse effects / Q000032:analysis*; D001128:Argon / Q000528:radiation effects*; D002713:Chlorine; D004051:Diethylhexyl Phthalate; D005214:Fast Neutrons; D006283:Health Physics; D006801:Humans; D007554:Isotopes; D010315:Particle Accelerators; D010316:Particle Size; D011835:Radiation Protection; D011868:Radioisotopes
D000336:Aerosols; D000396:Air Pollutants, Radioactive; D007554:Isotopes; D011868:Radioisotopes; D002713:Chlorine; D001128:Argon; D004051:Diethylhexyl Phthalate