course: Plasma Spectroscopy

teaching methods:
lecture with tutorials
responsible person:
Prof. Dr.-Ing. Peter Awakowicz
Prof. Dr.-Ing. Peter Awakowicz (ETIT), M. Sc. Marcel Fiebrandt (ETIT)
offered in:
summer term

dates in summer term

  • start:


All statements pertaining to examination modalities (for the summer/winter term of 2020) are given with reservations. Changes due to new requirements from the university will be announced as soon as possible.

Date according to prior agreement with lecturer.

Form of exam:oral
Registration for exam:FlexNow


The students are interested in plasma diagnostic by optical emission spectroscopy. They are capable of determining plasma parameters from spectra as well as to pinpoint limitations and precision of the used models and instruments.


The lecture is an introduction to applied plasma spectroscopy and is divided into the three parts.

First, it is discussed how light can be defined and why it is possible to diffract the light by its wavelengths. Afterwards, the different components and layouts of spectrometers are explained and demonstrated how the resolution of the system can be influenced. Furthermore, the procedures and problems of wavelength, relative, and absolute calibration are discussed.

In the second part, the basic principles of atomic physics are presented, starting with the Bohr model to the Schrödinger equation. With this, the energy levels and transitions of the atom will be described. Afterwards, the more complex two atomic molecules will be discussed, why their spectra differ from those of the atoms and which properties can be deduced from it.

In the final part, examples from low pressure plasma systems are shown and plasma properties are determined from their spectra. By this, the gas temperature, electron temperature, electron density, as well as neutral and radical densities are deduced.



recommended knowledge

Basics of physics Basics of mathematics