ED2235 Atomic Physics for Fusion 6.0 credits

Atomfysik för fusion

The research and development of controlled fusion involves knowledge and methods from many different branches of physics, such as electromagnetism, plasma physics, nuclear physics, atomic physics, surface physics and materials physics.

The purpose of this course is to make the student familiar with those aspects of atomic physics that are most important in fusion research. The focus of the course is on basic understanding of atomic collisions and applications in plasma modeling, plasma diagnostics and plasma surface interactions. Much of the course content is applicable also in other contexts in plasma processing and technology, ion implantation and radiation effects.

  • Education cycle

    Second cycle
  • Main field of study

    Electrical Engineering
    Engineering Physics
    Physics
  • Grading scale

    A, B, C, D, E, FX, F

Course offerings

Autumn 19 TEFRM/TNEEM for programme students

Autumn 18 TEFRM/TNEEM for programme students

Intended learning outcomes

The research and development of controlled fusion involves knowledge and methods from many different branches of physics, such as electromagnetism, plasma physics, nuclear physics, atomic physics, surface physics and materials physics.

The purpose of this course is to make the student familiar with those aspects of atomic physics that are most important in fusion research. The focus of the course is on basic understanding of atomic collisions and applications in plasma modeling, plasma diagnostics and plasma surface interactions. Much of the course content is applicable also in other contexts in plasma processing and technology, ion implantation and radiation effects.

Course main content

Short review of quantum mechanics and atomic structure. Collision kinematics, cross sections, rate coefficients. Elastic collisions, classically and in wave mechanics, the Born approximation. Interatomic potentials. Thomas-Fermi model. A universal interatomic potential. Plasma resistivity, stopping power, sputtering and backscattering at surfaces. Inelastic collisions classical- and Born approximations. Electron impact ionization and excitation, recombination, electron transfer, bremsstrahlung. Semi-empirical fits and Effective Z, power balance, thermal equilibria, interplay of ion transport and atomic processes. Numerical exercises with MATLAB, involving rate coefficients, penetration of impurities in plasmas, emissivity profiles and neutral particle transport, etcetera.

Disposition

Individual and group assignments and one written exam.

Eligibility

120 hp in electrical engineering or technical physics including documented proficiency in English B or equivalent.

Recommended prerequisites

Required background: Basic mechanics and electromagnetic theory, introductory modern physics (SH2008 or equivalent).

Literature

R.E. Johnson, Introduction to Atomic and Molecular Collisions

Utdrag ur D. Park, Introduction to the Quantum Theory, 3rd ed. 1991, R.D. Cowan, The Theory of Atomic Structure and Spectra, J.F. Ziegler, J.P. Biersack and U. Littmark, The Stopping and Ranges of Ion of Ions in Matter Vol. 1 eller liknande litteratur.

Valda uppsatser i skrifter. Föreläsningsanteckningar.

Examination

  • ANN1 - Assignments - Individual, 1.5, grading scale: A, B, C, D, E, FX, F
  • ANN2 - Assignments - Group, 1.5, grading scale: A, B, C, D, E, FX, F
  • TEN1 - Examination, 3.0, grading scale: A, B, C, D, E, FX, F

Requirements for final grade

Having followed this course the student should:

·         Understand basic atomic collision physics in terms of the dominating mechanisms in physical processes like elastic collisions, electron impact ionization and excitation, and charge transfer.

·         Be able to exercise intuitive judgment of the relevant orders of magnitude, time scales, energy dependencies and similar in atomic collisions with fusion relevance.

·         Be able to account for the role of atomic collisions in fusion plasma physics and plasma surface interactions.

·         Be familiar with the use of fitting formulae and databases for cross sections, rate coefficients and derived quantities like stopping power or sputtering yield.

·         Be able to use atomic data in numerical modeling.

Offered by

EECS/Electrical Energy Engineering

Contact

Henric Bergsåker

Examiner

Henrik Bergsåker <henricb@kth.se>

Version

Course syllabus valid from: Spring 2019.
Examination information valid from: Spring 2019.