Complex refractive index of crystalline quartz particles from UV to thermal infrared

Herbin, Herve; Deschutter, Lise; Deguine, Alexandre; Petitprez, Denis

Document type :

Article dans une revue scientifique: Article original

DOI :

10.1080/02786826.2023.2165899

Permalink :

http://hdl.handle.net/20.500.12210/102500

Title :

Complex refractive index of crystalline quartz particles from UV to thermal infrared

Author(s) :

Herbin, Herve [Auteur]

Laboratoire d'Optique Atmosphérique (LOA) - UMR 8518
Deschutter, Lise [Auteur]
Physicochimie des Processus de Combustion et de l’Atmosphère - UMR 8522 [PC2A]
Laboratoire d’Optique Atmosphérique - UMR 8518 [LOA]
Deguine, Alexandre [Auteur]

Physicochimie des Processus de Combustion et de l’Atmosphère - UMR 8522 [PC2A]
Laboratoire d’Optique Atmosphérique - UMR 8518 [LOA]
Petitprez, Denis [Auteur]

Physicochimie des Processus de Combustion et de l'Atmosphère (PC2A) - UMR 8522

Journal title :

Aerosol Science and Technology

Abbreviated title :

Aerosol Sci. Technol.

Volume number :

Pages :

Publication date :

2023-02-11

ISSN :

0278-6826

HAL domain(s) :

Planète et Univers [physics]/Océan, Atmosphère

English abstract : [en]

Crystalline quartz is an important element of many materials and one of the major compounds of mineral dust. Thus, knowledge of its optical properties is essential for many applications, in particular for remote sensing ...
Show more >Crystalline quartz is an important element of many materials and one of the major compounds of mineral dust. Thus, knowledge of its optical properties is essential for many applications, in particular for remote sensing techniques. However, despite the fact that crystalline quartz has been an object of study for many years using various experimental approaches, its optical properties and in particular its complex refractive indices (CRI) remain uncertain. The focus of this investigation is the determination of a new set of CRI of crystalline quartz particles retrieved from a methodology which has already demonstrated its efficiency on pure amorphous materials and volcanic ashes. The experimental set-up allows recording simultaneously size distribution (from 15 nm to 20 µm) of airborne particles and extinction spectra over a wide continuous spectral range from thermal infrared (650 cm−1) to UV (40,000 cm−1) with high spectral resolution (up to 0.5 cm−1). By associating these measurements and a numerical procedure coupling scattering theories, the single subtractive Kramers-Kronig relation, and an optimal estimation method in an iterative process, we precisely determine the real and imaginary parts of the CRI of crystalline SiO2 with mean values of the uncertainties of 2.5% and 1.7%, respectively. Moreover, the use of these CRIs allows to simulate an extinction spectrum of another quartz sample very well, which shows their suitability as well as the good reproducibility of the whole process.Show less >

Language :

Anglais

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
CNRS

Collections :

Laboratoire d'Optique Atmosphérique (LOA) - UMR 8518

Submission date :

2024-01-16T22:55:09Z
2024-02-08T14:56:30Z

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Version	Link	Modification date
2	20.500.12210/102500*	2024-02-08T14:53:14Z
1	20.500.12210/102500.1	2024-01-16T22:55:09Z

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