Modélisation de la rétrodiffusion de particules fines carbonées pour l’exploitation de données lidar

28 Jan 2024
Job Information

Organisation/Company

CNRS UMR6614 CORIA

Department

Optics and Lasers

Research Field

Physics » Electromagnetism
Physics » Applied physics

Researcher Profile

First Stage Researcher (R1)

Country

France

Application Deadline

4 Mar 2024 – 12:00 (Europe/Paris)

Type of Contract

Temporary

Job Status

Full-time

Hours Per Week

35

Offer Starting Date

28 Jan 2024

Is the job funded through the EU Research Framework Programme?

Not funded by an EU programme

Is the Job related to staff position within a Research Infrastructure?

No

Offer Description

Whether to improve air quality, reduce the health impact of fine particles or better understand their contribution to global warming, it is necessary to improve the quantification of particulate emissions and the assessment of their radiative properties. In-situ optical techniques are the only ones that can be used in complex environments or on large scales. In this respect, LIDAR techniques are of particular interest in this project for probing particulate emissions from aircraft engines. However, these particles have a complex morphology and variable composition, necessitating the use of models that are either too simplistic (Mie theory is not adapted to such complex morphologies) or too cumbersome (rigorous numerical resolution of Maxwell’s equations).

In this context, the aim of this thesis project is to improve the modeling of absorption, total and backscatter cross-sections of soot/black carbon aggregates in the purpose of their implementation in LIDAR signal inversion codes. To achieve this, rigorous cross-section calculations will be performed numerically using virtual aggregates with realistic morphologies. A detailed morphological analysis combined with a study of the internal electric field will be carried out to better evaluate these effective cross-sections. This modeling of the radiative properties of these particles will be used to interpret the results of measurement campaigns in which the PhD student will participate.

Requirements

Research Field

Physics » Metrology

Education Level

Master Degree or equivalent

Skills/Qualifications

The candidate must have completed M2 and/or an engineering degree. Knowledge of light-particle interaction and optical techniques is a definite plus for this project.

Languages

ENGLISH

Level

Good

Languages

FRENCH

Research Field

Physics » Electromagnetism

Years of Research Experience

None

Internal Application form(s) needed
Descriptif sujet de thèse (French).pdf
English
(443.73 KB – PDF)
Download
Additional Information
Work Location(s)

Number of offers available

1

Company/Institute

CORIA

Country

France

State/Province

Normandie

City

Saint Etienne du rouvray

Postal Code

76800

Street

Avenue de l’Université

Geofield

Where to apply

E-mail

[email protected]

Contact

City

Saint Etienne du Rouvray

Website

https://www.coria.fr/

Street

Avenue de l’Université

Postal Code

76800

STATUS: EXPIRED