Affiliation: | 1.Institute of Experimental Physics, Faculty of Mathematics, Physics and Informatics, University of Gdańsk, Wita Stwosza 57, 80-308, Gdansk, Poland ;2.MGE, Lipowa 7, 82-103, Stegna, Poland ;3.Department of Physics, Gdynia Maritime University, Morska 81-87, 81-225, Gdynia, Poland ; |