Development of a High-Pressure Aerodynamic Lens for Focusing Large Particles (4–10 μm) into the Aerosol Time-of-Flight Mass Spectrometer

Autor:	Thomas K. Darlington, Joe Mayer, John F. Cahill, Matthew T. Spencer, K. A. Prather, John C. Holecek, Beth E. Reed, Xiaoliang Wang
Rok vydání:	2014
Předmět:	Range (particle radiation) business.industry Chemistry Pollution Light scattering Aerosol law.invention Lens (optics) Time of flight Optics law Torr Environmental Chemistry General Materials Science business Body orifice Particle deposition
Zdroj:	Aerosol Science and Technology. 48:948-956
ISSN:	1521-7388 0278-6826
DOI:	10.1080/02786826.2014.947400
Popis:	A new aerodynamic lens system for an online aerosol time-of-flight mass spectrometer (ATOFMS) has been designed and constructed to transmit and allow the analysis of individual particles in the 4–10-μm-size range. Modeling was used to help design the lens within the bounds of ATOFMS instrumental constraints. The aerodynamic lens operates at a high inlet pressure, 3066 Pa (23 Torr), with a unique tapered relaxation region to improve large particle transmission. Every stage of the lens was tested empirically using a combination of particle deposition and light scattering experiments. The critical orifice was found to significantly impact large particle transmission, with orifices 10% for particles from 4–10 μm with a peak efficiency of 74 ± 9% for 6-μm particles. With the e...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5f0875b060c284b68b09a186a94cbd4b https://doi.org/10.1080/02786826.2014.947400 Zobrazit plný text záznamu