Physics with Positrons 2

Module PH2076

This module handbook serves to describe contents, learning outcome, methods and examination type as well as linking to current dates for courses and module examination in the respective sections.

Basic Information

PH2076 is a semester module in German or English language at Master’s level which is offered in summer semester.

This Module is included in the following catalogues within the study programs in physics.

  • General catalogue of special courses
  • Specific catalogue of special courses for Applied and Engineering Physics
  • Specific catalogue of special courses for condensed matter physics
  • Specific catalogue of special courses for nuclear, particle, and astrophysics

If not stated otherwise for export to a non-physics program the student workload is given in the following table.

Total workloadContact hoursCredits (ECTS)
150 h 40 h 5 CP

Responsible coordinator of the module PH2076 is Christoph Pascal Hugenschmidt.

Content, Learning Outcome and Preconditions

Content

This module provides an introduction in to the physics with positrons and its application in atom physics, material science, solid state physics and surface science. After a historical summary various techniques are presented about the production of positron sources and mono-energetic beams. The interaction of gamma radiation and positrons with matter is described in order to explain the use of positrons as microprobes for the investigation of defects on an atomic scale. Surface studies are presented in order to demonstrate the specific differences between positrons and electrons. Afterwards, a concise overview on crystal defects and the characterization of the free volume in amorphous matter is given. Various radiation and particle detectors are presented in order to discuss their benefits for positron experiments. Finally different types of spectrometers are presented for the investigation of the electron momentum distribution, defect types and their concentration, elemental distribution at defects, surfaces as well as fundamental aspects of Positronium. In this connection, recently obtained results of the current research are discussed.

Learning Outcome

After participation in the Module the student is able to:
1) understand and explain the interaction of gamma radiation and positrons with matter
2) present particle and radiation detectors
3) explain the production of positron beams as well as electrostatic and magnetic beam guidance
4) explain the operation of positron spectrometers and complementary methods
5) specify lattice defects and positron techniques to investigate defects
6) explain the measurement of the electronic structure of materials
7) explain the production and measurement with Positronium
8) selected fundamental experiments using anti-particles

Preconditions

Lecture of "Physics with Positrons I"“

Courses, Learning and Teaching Methods and Literature

Courses and Schedule

ArtSWSTitelDozent(en)Termine
VO 2 Physik mit Positronen 2 Hugenschmidt, C. Montag, 10:00–12:00

Learning and Teaching Methods

Lecture, computer-based presentations, blackboard, discussion.

Media

Web-site, specialised literature, presentations as pdf-files.

Literature

Textbooks in solid state and nuclear physics such as: C. Schaefer L. Bergmann. Lehrbuch der Experimentalphysik, Bd. 6: Festkörper. Gruyter, (2005); Neil W. Ashcroft and N. David Mermin. Solid State Physics. Saunders College, Fort Worth, (2001); G. Schatz and A. Weidinger. Nukleare Festkörperphysik. B. G. Teubner, (1997); Theo Mayer-Kuckuk. Kernphysik. Teubner, Stuttgart, (1984); Zur Positronenphysik: P. Coleman, Positron Beams and Their Applications, World Scientific, (2000).

Module Exam

Description of exams and course work

In an oral exam the learning outcome is tested using comprehension questions and sample problems.

In accordance with §12 (8) APSO the exam can be done as a written test. In this case the time duration is 60 minutes.

Exam Repetition

There is a possibility to take the exam at the end of the semester. There is a possibility to take the exam in the following semester.

Condensed Matter

When atoms interact things can get interesting. Fundamental research on the underlying properties of materials and nanostructures and exploration of the potential they provide for applications.

Nuclei, Particles, Astrophysics

A journey of discovery to understanding our world at the subatomic scale, from the nuclei inside atoms down to the most elementary building blocks of matter. Are you ready for the adventure?

Biophysics

Biological systems, from proteins to living cells and organisms, obey physical principles. Our research groups in biophysics shape one of Germany's largest scientific clusters in this area.