Developing New Routine for Processing Two-Dimensional Coincidence Doppler Energy Spectra and Evaluation of Electron Subsystem Properties in Metals

• Authors: P. Stepanov , S. Stepanov , V. Byakov , F. Selim
• Languages of publication: EN

Abstracts

EN

A digital coincidence Doppler broadening (CDB) spectrometer consisting of two HPGe detectors is assembled; the energy resolution of each detector is 1.1 keV at energies near the annihilation line. Two desktop applications for CDB spectra processing are developed. TLIST Processor converts two-dimensional CDB spectra into one-dimensional spectra. Another tool SW Calculator deconvolutes the experimental CDB spectra into contributions from positron annihilation with valence, core and conduction band electrons. The program estimates the energies of the corresponding electrons and evaluates S and W parameters of the CDB spectra.

Keywords

EN

Positron annihilation; Doppler broadening; metals; core electrons

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2017
• Volume: 132
• Issue: 5
• Pages: 1628-1633

Dates

published

2017-11

Contributors

author

P. Stepanov

• Center for Photochemical Sciences, Bowling Green State University, OH, USA

author

S. Stepanov

• NRC "Kurchatov Institute" - Institute for Theoretical and Experimental Physics, B. Cheremuskinskaya st., 25. 117218 Moscow Russia
• National Research Nuclear University "MEPhI", 115409, Moscow, Russia
• Lomonosov Moscow State University, Chemical Department, Leninskie Gory, Moscow, Russia

author

V. Byakov

• NRC "Kurchatov Institute" - Institute for Theoretical and Experimental Physics, B. Cheremuskinskaya st., 25. 117218 Moscow Russia
• Lomonosov Moscow State University, Chemical Department, Leninskie Gory, Moscow, Russia
• D. Mendeleyev University of Chemical Technology of Russia, Miusskaya sq., 9, 125047, Moscow, Russia

author

F. Selim

• Center for Photochemical Sciences, Bowling Green State University, OH, USA

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Identifiers

DOI

10.12693/APhysPolA.132.1628