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Title: A fast integrated mobility spectrometer for rapid measurement of sub-micrometer aerosol size distribution, Part I: Design and model evaluation

Journal Article · · Journal of Aerosol Science

This study discusses, a fast integrated mobility spectrometer (FIMS) was previously developed to characterize submicron aerosol size distributions at a frequency of 1 Hz and with high size resolution and counting statistics. However, the dynamic size range of the FIMS was limited to one decade in particle electrical mobility. It was proposed that the FIMS dynamic size range can be greatly increased by using a spatially varying electric field. This electric field creates regions with drastically different field strengths in the separator, such that particles of a wide diameter range can be simultaneously classified and subsequently measured. A FIMS incorporating this spatially varying electric field is developed. This paper describes the theoretical frame work and numerical simulations of the FIMS with extended dynamic size range, including the spatially varying electric field, particle trajectories, activation of separated particles in the condenser, and the transfer function, transmission efficiency, and mobility resolution. The influences of the particle Brownian motion on FIMS transfer function and mobility resolution are examined. The simulation results indicate that the FIMS incorporating the spatially varying electric field is capable of measuring aerosol size distribution from 8 to 600 nm with high time resolution. As a result, the experimental characterization of the FIMS is presented in an accompanying paper.

Research Organization:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER)
Grant/Contract Number:
SC00112704; SC0006312; AC02-98CH10886
OSTI ID:
1347372
Alternate ID(s):
OSTI ID: 1415307
Report Number(s):
BNL-113653-2017-JA; R&D Project: 2016-BNL-EE630EECA-Budg; KP1701000
Journal Information:
Journal of Aerosol Science, Vol. 108, Issue C; ISSN 0021-8502
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 15 works
Citation information provided by
Web of Science

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Cited By (6)

Fast time response measurements of particle size distributions in the 3–60 nm size range with the nucleation mode aerosol size spectrometer journal January 2018
Retrieval of high time resolution growth factor probability density function from a humidity-controlled fast integrated mobility spectrometer text January 2019
Substantial convection and precipitation enhancements by ultrafine aerosol particles journal January 2018
Retrieval of high time resolution growth factor probability density function from a humidity-controlled fast integrated mobility spectrometer text January 2019
Retrieval of High Time Resolution Growth Factor Probability Density Function from a Humidity-controlled Fast Integrated Mobility Spectrometer text January 2019
Retrieval of high time resolution growth factor probability density function from a humidity-controlled fast integrated mobility spectrometer journal June 2019