naa a22 4500 510732585 CHVBK 20180411082958.0 cr unu---uuuuu 180411e20130201xx s 000 0 eng 10.1134/S106377291302008X doi (NATIONALLICENCE)springer-10.1134/S106377291302008X Manifestation of the light-induced drift effect in chemically peculiar stellar atmospheres [Elektronische Daten] [A. Parkhomenko, A. Shalagin] We have calculated the factor (ν g − ν e )/ν g in the temperature range T = 300-20 000 K for the ions Be+, Mg+, Ca+, C+ in atomic hydrogen and for the ions Mg+ in atomic argon using the known interaction potentials. Here ν e and ν g are the transport collision frequencies for excited- and ground-state particles respectively. Calculations have shown that at T = 10 000-20 000 K, typical temperatures of the atmospheres of chemically peculiar (CP) stars, the values |ν g − ν e |/ν g ≈ 0.1-0.2 can be reached for ions. This causes the light-induced drift (LID) velocity of ions up to ∼0.1 cm/s in the atmospheres of CP stars with temperatures T < 10 000 K. Therefore the separation of chemical elements due to the LID of ions under the conditions of the atmospheres of such CP stars can be an order of magnitude more efficient in comparison with the separation caused by the radiation pressure. In the atmosphere of more hot stars (20 000 K > T > 10 000 K) it is possible to expect approximately identical magnitude of the LID effect and that of radiation pressure. In the very hot stars (T >20 000 K) the LID effect is manifested very weakly. Pleiades Publishing, Ltd., 2013 Parkhomenko A. Institute of Automation and Electrometry, Siberian Branch, Russian Academy of Sciences, 630090, Novosibirsk, Russia aut Shalagin A. Institute of Automation and Electrometry, Siberian Branch, Russian Academy of Sciences, 630090, Novosibirsk, Russia aut Astronomy Reports SP MAIK Nauka/Interperiodica 57/2(2013-02-01), 110-119 1063-7729 57:2<110 2013 57 11444 https://doi.org/10.1134/S106377291302008X text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S106377291302008X text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Parkhomenko A. Institute of Automation and Electrometry, Siberian Branch, Russian Academy of Sciences, 630090, Novosibirsk, Russia aut NATIONALLICENCE 700 1- Shalagin A. Institute of Automation and Electrometry, Siberian Branch, Russian Academy of Sciences, 630090, Novosibirsk, Russia aut NATIONALLICENCE 773 0- Astronomy Reports SP MAIK Nauka/Interperiodica 57/2(2013-02-01), 110-119 1063-7729 57:2<110 2013 57 11444 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer