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Course, academic year 2023/2024
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Introduction to positron annihilation - NFPL214
Title: Úvod do pozitronové anihilace
Guaranteed by: Department of Low Temperature Physics (32-KFNT)
Faculty: Faculty of Mathematics and Physics
Actual: from 2019
Semester: summer
E-Credits: 3
Hours per week, examination: summer s.:1/1, C+Ex [HT]
Capacity: unlimited
Min. number of students: unlimited
4EU+: no
Virtual mobility / capacity: no
State of the course: taught
Language: Czech
Teaching methods: full-time
Teaching methods: full-time
Guarantor: prof. Mgr. Jakub Čížek, Ph.D.
Annotation - Czech
Last update: doc. RNDr. Helena Valentová, Ph.D. (31.01.2018)
Základní principy a metody pozitronové anihilační spektroskopie (PAS) a využití této techniky ve fyzice pevných látek a materiálovém výzkumu, přehled nejdůležitějších experimentálních metod PAS, analýza experimentálních dat získaných při PAS experimentech. Studentům bude dána možnost práce se spektrometry PAS a programy pro analýzu dat a teoretické výpočty pozitronových parametrů. Předmět byl vytvořen za podpory projektů Univerzity Karlovy z OP VVV Zvýšení kvality vzdělávání na UK a jeho relevance pro potřeby trhu práce a Vybavení laboratoří pro experimentální složku výuky fyziky.
Aim of the course -
Last update: prof. Mgr. Jakub Čížek, Ph.D. (10.06.2019)

The aim of this lecture is to provide introduction to positron annihilation spectroscopy and its applications in study of lattice defects in solids.

Course completion requirements -
Last update: prof. Mgr. Jakub Čížek, Ph.D. (10.06.2019)

Oral exam. Obtaining of credit is necessary for exam.

Credit will be given for successful solution of given problem.

Literature -
Last update: prof. Mgr. Jakub Čížek, Ph.D. (10.06.2019)

P. Hautojärvi (ed.) Positrons in solids, Springer-Verlag, Berlin (1979).

A. Dupasquier, A.P. Mills (eds.), Proceedings of the International School of Physics "Enrico Fermi", IOS Press, Varenna (1995).

R. Krause-Rehberg, H.S. Leipner, Positron annihilation in semiconductors, Springer-Velag, Berlin (1999).

O.E. Mogensen: Positron annihilation in chemistry, Springer-Verlag, Berlin (1995).

W.R. Leo: Techniques for nuclear and particle physics experiments, Springer-Verlag, Berlin (1987).

M.J. Puska, R.M. Niemien: Theory of positrons in solids and on solid surfaces, Rev. Mod. Phys. 66, 841-897 (1994).

F. Tuomisto, I. Makkonen: Defect identification in semiconductors with positron annihilation: Experiment and theory, Rev. Mod. Phys. 85, 1583-1631 (2013).

P.J. Schultz, K.G. Lynn, Interaction of positron beams with surfaces, thin films, and interfaces, Rev. Mod. Phys. 60, 701 (1988).

Ch. Hugenschmidt, Positrons in surface physics, Surf. Sci. Reports 71, 547-594 (2016)

Teaching methods -
Last update: prof. Mgr. Jakub Čížek, Ph.D. (10.06.2019)

lecture

Requirements to the exam -
Last update: prof. Mgr. Jakub Čížek, Ph.D. (10.06.2019)

Oral exam covers topics presented in lectures during semester.

Syllabus -
Last update: prof. Mgr. Jakub Čížek, Ph.D. (10.06.2019)

Dirac theory of antimatter

Positron and its fundamental properties

Positron annihilation

Positron sources and energetic spectra of emitted positrons

Positron interaction with solid matter, positron thermalization, implantation profile

Observable related to positron annihilation: positron lifetime, Doppler shift in energy of annihilation ration, angular correlation

Basic experimental techniques, detectors and spectrometers

Positron trapping at defects, simple trapping model

Positron lifetime spectroscopy, positron lifetime spectrum and its analysis

Angular correlations, Fermi surface reconstruction

Doppler broadening of annihilation photo-peak, line shape parameters S, W

Electron structure of solids and lattice defects

Positron trapping in vacancies, determination of vacancy concentration, vacancy clusters

Point defects in metals, semiconductors and insulators

Positron trapping in dislocations, diffusion trapping model and its applications

Positron confinement in precipitates, positron affinity

Coincidence measurement of Doppler broadening and annihilation photo-peak and its applications

Characterization of local chemical environment of defects

Ab-initio theoretical calculations of positron parameters

Moderation of positrons

Slow positron beams with variable energy, defect depth profile, S(E) curve, S-W plot

Pulsed positron beams

Positronium and its properties

Decay of positronium, Tao-Eldrup model

Positronium porosimetry

Positron diffraction

Transmission and scanning positron microscope

 
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