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

Skocz do pozycji: 1.

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: 2.

Tytuł:: Application of Positron Spectroscopy for the Detection of Nanostructures in Water-Alcohol Mixtures
Autorzy:: Stepanov, P.
Byakov, V.
Zaluzhnyi, A.
Powiązania:: https://bibliotekanauki.pl/articles/1338564.pdf
Data publikacji:: 2014-03
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 82.20.-w
82.20.Pm
82.30.Gg
82.80.Ej
Opis:: Analysis of the o-Ps lifetimes concentration dependences in water-propanol mixtures (with and without $CoCl_2$ additive) shows that this mixture looks like an emulsion of alcohol micelles in water at propanol mole fractions 0.1-0.4.
Źródło:: Acta Physica Polonica A; 2014, 125, 3; 767-769
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Primary Chemical Reactions Induced by Transformation of Radioactive Nuclei in Solids at Low Temperatures. Investigation by Means of the Emission Mössbauer and Positron Spectroscopies
Autorzy:: Byakov, V. M.
Kulikov, L. A.
Perfil'ev, Y. D.
Stepanov, S. V.
Powiązania:: https://bibliotekanauki.pl/articles/2043320.pdf
Data publikacji:: 2005-05
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 61.80.Fe
36.10.Dr
78.70.Bj
Opis:: A set of early chemical reactions in grapes of ionization (blobs) arising in tracks of fast electrons and positrons in liquids as well as formed by the Auger electrons in frozen aqueous media around decaying Mössbauer $\text{}^{57}$Co or $\text{}^{119m}$Sn nuclei is suggested. The mechanism predicts a correlated variation of the formation probabilities of intrablob final products, namely Fe$\text{}^{2+}$-Fe$\text{}^{3+}$ or Sn$\text{}^{2+}$-Sn$\text{}^{4+}$ ions, positronium atom and molecular hydrogen with variation of temperature, degree of crystallinity, concentration of electron scavengers. These correlations indicate on similarity of chemical processes as in blobs created by $\text{}^{57}$Co and $\text{}^{119m}$Sn after their decay as well as in blobs produced in tracks of fast positrons and electrons.
Źródło:: Acta Physica Polonica A; 2005, 107, 5; 792-798
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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