Increase of the particle hit rate in a laser single-particle mass spectrometer by pulse delayed extraction technology
<p>A single-particle mass spectrometer (SPMS) can provide a wealth of valuable information on chemical and physical parameters of individual particles in real time. One of the main performance criteria of the instrument is efficiency of particle detection (hit rate). Most SPMS instruments use...
| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2020-02-01
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| Series: | Atmospheric Measurement Techniques |
| Online Access: | https://www.atmos-meas-tech.net/13/941/2020/amt-13-941-2020.pdf |
| _version_ | 1831734899548094464 |
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| author | Y. Chen Y. Chen V. Kozlovskiy X. Du X. Du J. Lv S. Nikiforov J. Yu J. Yu A. Kolosov W. Gao W. Gao Z. Zhou Z. Zhou Z. Huang Z. Huang L. Li L. Li |
| author_facet | Y. Chen Y. Chen V. Kozlovskiy X. Du X. Du J. Lv S. Nikiforov J. Yu J. Yu A. Kolosov W. Gao W. Gao Z. Zhou Z. Zhou Z. Huang Z. Huang L. Li L. Li |
| author_sort | Y. Chen |
| collection | DOAJ |
| description | <p>A single-particle mass spectrometer (SPMS) can provide a
wealth of valuable information on chemical and physical parameters of
individual particles in real time. One of the main performance criteria of
the instrument is efficiency of particle detection (hit rate). Most SPMS
instruments use constant electrical field (DC) extraction, where stationary
high voltage is applied to the extraction electrodes. As the aerosol
particles initially carry a certain charge, those with a high amount to
charge can be deflected by this electric field and lost, thus decreasing the
hit rate. We realized that the delayed extraction technique can eliminate the
stochastic dispersion of the particle beam caused by their deflection in the
stationary electric field. As the result, the hit rate of the instrument can
be significantly improved. Also, as the effect of the deflection in the
electric field is mass dependent, it can cause distortion of the measured
size distribution of the particles. Hence, the delayed extraction technique
can bring the recorded distribution closer to the actual one. We found that
the delayed extraction technique provides a mass resolution improvement as well
as increases the hit rate. The gain in the hit rate depends on the type of
particles. It can be 2 orders of magnitude for model particles and up to
2–4 times for ambient particles. In the present work we report experiments
and results showing the effect of the delayed extraction on the beam
divergence caused by particle charge, the hit rate improvement, and the
effect of the delayed extraction on the measured particle size distribution.</p> |
| first_indexed | 2024-12-21T12:16:41Z |
| format | Article |
| id | doaj.art-e91dbcc197d84cf386203b462e4d8fe4 |
| institution | Directory Open Access Journal |
| issn | 1867-1381 1867-8548 |
| language | English |
| last_indexed | 2024-12-21T12:16:41Z |
| publishDate | 2020-02-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Atmospheric Measurement Techniques |
| spelling | doaj.art-e91dbcc197d84cf386203b462e4d8fe42022-12-21T19:04:25ZengCopernicus PublicationsAtmospheric Measurement Techniques1867-13811867-85482020-02-011394194910.5194/amt-13-941-2020Increase of the particle hit rate in a laser single-particle mass spectrometer by pulse delayed extraction technologyY. Chen0Y. Chen1V. Kozlovskiy2X. Du3X. Du4J. Lv5S. Nikiforov6J. Yu7J. Yu8A. Kolosov9W. Gao10W. Gao11Z. Zhou12Z. Zhou13Z. Huang14Z. Huang15L. Li16L. Li17Institute of Mass Spectrometer and Atmospheric Environment, Jinan University, Guangzhou, 510632, ChinaGuangdong Provincial Engineering Research Center for On-Line Source Apportionment System of Air Pollution, Guangzhou, 510632, ChinaChernogolovka Branch of the N. N. Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, Chernogolovka, 142432, RussiaInstitute of Mass Spectrometer and Atmospheric Environment, Jinan University, Guangzhou, 510632, ChinaGuangdong Provincial Engineering Research Center for On-Line Source Apportionment System of Air Pollution, Guangzhou, 510632, ChinaGuangzhou Hexin Analytical Instrument Company, Ltd., Guangzhou, 510530, ChinaProkhorov General Physics Institute, Russian Academy of Science, Moscow, 119991, RussiaInstitute of Mass Spectrometer and Atmospheric Environment, Jinan University, Guangzhou, 510632, ChinaGuangdong Provincial Engineering Research Center for On-Line Source Apportionment System of Air Pollution, Guangzhou, 510632, ChinaN. N. Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, Moscow, 119991, RussiaInstitute of Mass Spectrometer and Atmospheric Environment, Jinan University, Guangzhou, 510632, ChinaGuangdong Provincial Engineering Research Center for On-Line Source Apportionment System of Air Pollution, Guangzhou, 510632, ChinaInstitute of Mass Spectrometer and Atmospheric Environment, Jinan University, Guangzhou, 510632, ChinaGuangdong Provincial Engineering Research Center for On-Line Source Apportionment System of Air Pollution, Guangzhou, 510632, ChinaInstitute of Mass Spectrometer and Atmospheric Environment, Jinan University, Guangzhou, 510632, ChinaGuangdong Provincial Engineering Research Center for On-Line Source Apportionment System of Air Pollution, Guangzhou, 510632, ChinaInstitute of Mass Spectrometer and Atmospheric Environment, Jinan University, Guangzhou, 510632, ChinaGuangdong Provincial Engineering Research Center for On-Line Source Apportionment System of Air Pollution, Guangzhou, 510632, China<p>A single-particle mass spectrometer (SPMS) can provide a wealth of valuable information on chemical and physical parameters of individual particles in real time. One of the main performance criteria of the instrument is efficiency of particle detection (hit rate). Most SPMS instruments use constant electrical field (DC) extraction, where stationary high voltage is applied to the extraction electrodes. As the aerosol particles initially carry a certain charge, those with a high amount to charge can be deflected by this electric field and lost, thus decreasing the hit rate. We realized that the delayed extraction technique can eliminate the stochastic dispersion of the particle beam caused by their deflection in the stationary electric field. As the result, the hit rate of the instrument can be significantly improved. Also, as the effect of the deflection in the electric field is mass dependent, it can cause distortion of the measured size distribution of the particles. Hence, the delayed extraction technique can bring the recorded distribution closer to the actual one. We found that the delayed extraction technique provides a mass resolution improvement as well as increases the hit rate. The gain in the hit rate depends on the type of particles. It can be 2 orders of magnitude for model particles and up to 2–4 times for ambient particles. In the present work we report experiments and results showing the effect of the delayed extraction on the beam divergence caused by particle charge, the hit rate improvement, and the effect of the delayed extraction on the measured particle size distribution.</p>https://www.atmos-meas-tech.net/13/941/2020/amt-13-941-2020.pdf |
| spellingShingle | Y. Chen Y. Chen V. Kozlovskiy X. Du X. Du J. Lv S. Nikiforov J. Yu J. Yu A. Kolosov W. Gao W. Gao Z. Zhou Z. Zhou Z. Huang Z. Huang L. Li L. Li Increase of the particle hit rate in a laser single-particle mass spectrometer by pulse delayed extraction technology Atmospheric Measurement Techniques |
| title | Increase of the particle hit rate in a laser single-particle mass spectrometer by pulse delayed extraction technology |
| title_full | Increase of the particle hit rate in a laser single-particle mass spectrometer by pulse delayed extraction technology |
| title_fullStr | Increase of the particle hit rate in a laser single-particle mass spectrometer by pulse delayed extraction technology |
| title_full_unstemmed | Increase of the particle hit rate in a laser single-particle mass spectrometer by pulse delayed extraction technology |
| title_short | Increase of the particle hit rate in a laser single-particle mass spectrometer by pulse delayed extraction technology |
| title_sort | increase of the particle hit rate in a laser single particle mass spectrometer by pulse delayed extraction technology |
| url | https://www.atmos-meas-tech.net/13/941/2020/amt-13-941-2020.pdf |
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