Autor: Stepanov, S. V. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Developing New Routine for Processing Two-Dimensional Coincidence Doppler Energy Spectra and Evaluation of Electron Subsystem Properties in Metals
Autorzy:: Stepanov, P.
Stepanov, S.
Byakov, V.
Selim, F.
Powiązania:: https://bibliotekanauki.pl/articles/1033257.pdf
Data publikacji:: 2017-11
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: Positron annihilation
Doppler broadening
metals
core electrons
Opis:: 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.
Źródło:: Acta Physica Polonica A; 2017, 132, 5; 1628-1633
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Track Effects in Positronium Formation
Autorzy:: Stepanov, S.
Byakov, V.
Duplâtre, G.
Stepanov, P.
Bokov, A.
Powiązania:: https://bibliotekanauki.pl/articles/1030026.pdf
Data publikacji:: 2017-11
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: positron
positronium
annihilation
ion-electron recombination
solvation
mobility
external electric field
track effects
polar and nonpolar liquids
Opis:: We discuss some aspects important for interpretation of the Ps formation process in liquids and molecular media: (1) inhomogeneity of intratrack reactions and parameters of the e⁺ track, (2) final states of e⁺, its solvation in polar and nonpolar liquids, relation to e⁺ mobility, (3) quasi-neutrality of the e⁺ blob and its ambipolar outdiffusion, (4) appearance of the "in-blob" and "out-of-the-blob" positron fractions, and (5) electric field effect on Ps formation.
Źródło:: Acta Physica Polonica A; 2017, 132, 5; 1461-1465
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Positrons and Positronium Atoms in a Condensed Phase Close to Its Melting Point
Autorzy:: Stepanov, S.
Zvezhinskiy, D.
Byakov, V.
Duplâtre, G.
Stepanov, P.
Powiązania:: https://bibliotekanauki.pl/articles/1196038.pdf
Data publikacji:: 2014-03
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 71.60.+z
34.80.Lx
78.70.Bj
82.30.Gg
Opis:: Investigation of the local heating effect at the terminal part of a fast positron track sheds light on the accumulation of defects in a frozen medium close to its melting point. Estimations of the formation energies of the structural defects which may trap the Ps atom as well as a contribution of these defects to the enthalpy of fusion are obtained.
Źródło:: Acta Physica Polonica A; 2014, 125, 3; 691-695
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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