气候变化领域集成服务门户(CCPortal): Study on CCN activity of fission product aerosols (CsI and CsOH) and their effect on size and other properties

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DOI	10.1016/j.atmosres.2019.104816
	Study on CCN activity of fission product aerosols (CsI and CsOH) and their effect on size and other properties
	Mishra G.; Tripathi S.N.; Saud T.; Joshi M.; Khan A.; Sapra B.K.
发表日期	2020
ISSN	0169-8095
卷号	236
英文摘要	This paper discusses the size resolved cloud condensation nuclei (CCN) properties of two cesium bound compounds viz. CsI and CsOH. These properties are important in context of risk analysis and management of probable environmental releases during postulated nuclear reactor accident conditions. If released as fission product aerosols, these particles have potential to act as CCN, when exposed to humid environment. On activation, their evolution-deposition dynamics and consequently fate is expected to be affected in closed and/or open atmosphere. Size resolved CCN efficiency spectra (20–300 nm) are obtained for 0.2–1% supersaturation (SS) for pure CsI and CsOH particles employing a DMT-CCN counter. The essential parameters estimated from these measurements are activation diameter and size-averaged hygroscopicity (κ) at targeted SS levels. Experimental results were also compared with the standard theories available in the literature. Accuracy of the deposition rates for these particles (if released) in reactor component systems estimated by nuclear reactor accident analyses codes will improve when CCN properties are also taken into account. CCN efficiency spectra and activation diameters at specific SS for CsI and CsOH particles are being reported for the first time. Information on these properties strengthen the database which is vital for simulating behavioral characteristics of these particles. This in turn has capability to improve environmental source term estimations in the most unlikely scenario of containment breach during severe reactor accident conditions. © 2019
英文关键词	CCN; Cloud Condensation Nuclei; CsI; CsOH; Fission product aerosols
学科领域	Aerosols; Cesium iodide; Chemical activation; Condensation; Deposition rates; Efficiency; Fission products; Nuclear reactor accidents; Nuclear reactors; Particle size analysis; Risk analysis; Risk assessment; Behavioral characteristics; Cloud condensation nuclei; CsOH; Deposition dynamics; Environmental release; Parameters estimated; Risk analysis and management; Source term estimation; Silicon compounds; aerosol composition; aerosol formation; cesium; cloud condensation nucleus; efficiency measurement; estimation method; hygroscopicity; particle size; saturation
语种	英语
scopus关键词	Aerosols; Cesium iodide; Chemical activation; Condensation; Deposition rates; Efficiency; Fission products; Nuclear reactor accidents; Nuclear reactors; Particle size analysis; Risk analysis; Risk assessment; Behavioral characteristics; Cloud condensation nuclei; CsOH; Deposition dynamics; Environmental release; Parameters estimated; Risk analysis and management; Source term estimation; Silicon compounds; aerosol composition; aerosol formation; cesium; cloud condensation nucleus; efficiency measurement; estimation method; hygroscopicity; particle size; saturation
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/120471
作者单位	Nuclear Engineering and Technology Programme, Department of Mechanical Engineering, IIT Kanpur208016, India; Department of Civil Engineering, IIT Kanpur208016, India; Centre for Environmental Science and Engineering, IIT Kanpur208016, India; National Aerosol Facility, IIT Kanpur208016, India; Radiological Physics and Advisory Division, Bhabha Atomic Research Centre, Mumbai, 400085, India
推荐引用方式 GB/T 7714	Mishra G.,Tripathi S.N.,Saud T.,et al. Study on CCN activity of fission product aerosols (CsI and CsOH) and their effect on size and other properties[J],2020,236.
APA	Mishra G.,Tripathi S.N.,Saud T.,Joshi M.,Khan A.,&Sapra B.K..(2020).Study on CCN activity of fission product aerosols (CsI and CsOH) and their effect on size and other properties.Atmospheric Research,236.
MLA	Mishra G.,et al."Study on CCN activity of fission product aerosols (CsI and CsOH) and their effect on size and other properties".Atmospheric Research 236(2020).