Affiliation: | 1. Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warsaw, Poland;2. Industrial Chemistry Research Institute, Rydygiera 8, 01-793 Warsaw, Poland;3. Institute of Physics, University of Bydgoszcz, Weyssenhoffa 11, 85-072 Bydgoszcz, Poland |