Video aided extinction measurement: A competitive method for dust density diagnostics

Andreas Petersen; Julia Kobus; Alexander Schmitz; Sebastian Wolf; Franko Greiner

doi:10.1063/5.0149976

Video aided extinction measurement: A competitive method for dust density diagnostics

Rev Sci Instrum. 2023 Aug 1;94(8):083702. doi: 10.1063/5.0149976.

Authors

Andreas Petersen¹, Julia Kobus², Alexander Schmitz¹, Sebastian Wolf^{2

3}, Franko Greiner^{1

3}

Affiliations

¹ Institute of Experimental and Applied Physics, Kiel, Germany.
² Institute of Theoretical Physics and Astrophysics, Kiel, Germany.
³ Kiel Nano, Surface and Interface Science KiNSIS, Kiel University, Kiel, Germany.

PMID: 38065172
DOI: 10.1063/5.0149976

Abstract

Among the most popular methods to measure dust density in a laboratory setup are 1D extinction, Abel inversion for circularly symmetric geometries, and computer tomography (CT) for arbitrary geometries. We present a new method based on a 1D extinction measurement in correlation with a video taken at an acute angle. It works well with limited optical access and has a good time resolution (at least several hertz). It measures the dust density within a slice of a nanodust cloud with precision comparable to other methods. Depending on the setup, this video aided extinction measurement can replace CT.