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| Titel |
A fast and easy-to-implement inversion algorithm for mobility particle size spectrometers considering particle number size distribution information outside of the detection range |
| VerfasserIn |
S. Pfeifer, W. Birmili, A. Schladitz, T. Müller, A. Nowak, A. Wiedensohler |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1867-1381
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Measurement Techniques ; 7, no. 1 ; Nr. 7, no. 1 (2014-01-14), S.95-105 |
| Datensatznummer |
250115559
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| Publikation (Nr.) |
 copernicus.org/amt-7-95-2014.pdf |
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| Zusammenfassung |
| Multiple-charge inversion is an essential procedure to convert the raw
mobility distributions recorded by mobility particle size spectrometers, such
as the DMPS or SMPS (differential or scanning mobility particle sizers), into
true particle number size distributions. In this work, we present a fast and
easy-to-implement multiple-charge inversion algorithm with sufficient
precision for atmospheric conditions,
but extended functionality. The
algorithm can incorporate size distribution information from sensors that
measure beyond the upper sizing limit of the mobility spectrometer, such as
an aerodynamic particle sizer (APS) or an optical particle counter (OPC).
This feature can considerably improve the multiple-charge inversion result in
the upper size range of the mobility spectrometer, for example, when
substantial numbers of coarse particles are present. The program also yields
a continuous size distribution from both sensors as an output. The algorithm
is able to calculate the propagation of measurement errors, such as those
based on counting statistics, into on the final particle number size
distribution. As an additional aspect, the algorithm can perform all
inversion steps under the assumption of non-spherical particle shape,
including constant or size-dependent shape factors. |
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