Influence of radioactivity on surface charging and aggregation kinetics of particles in the atmosphere.
Environ Sci Technol
; 48(1): 182-9, 2014.
Article
en En
| MEDLINE
| ID: mdl-24308778
ABSTRACT
Radioactivity can influence surface interactions, but its effects on particle aggregation kinetics have not been included in transport modeling of radioactive particles. In this research, experimental and theoretical studies have been performed to investigate the influence of radioactivity on surface charging and aggregation kinetics of radioactive particles in the atmosphere. Radioactivity-induced charging mechanisms have been investigated at the microscopic level, and heterogeneous surface potential caused by radioactivity is reported. The radioactivity-induced surface charging is highly influenced by several parameters, such as rate and type of radioactive decay. A population balance model, including interparticle forces, has been employed to study the effects of radioactivity on particle aggregation kinetics in air. It has been found that radioactivity can hinder aggregation of particles because of similar surface charging caused by the decay process. Experimental and theoretical studies provide useful insights into the understanding of transport characteristics of radioactive particles emitted from severe nuclear events, such as the recent accident of Fukushima or deliberate explosions of radiological devices.
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Atmósfera
/
Contaminantes Radiactivos del Aire
/
Modelos Teóricos
Tipo de estudio:
Prognostic_studies
Idioma:
En
Año:
2014
Tipo del documento:
Article