1. Institute of Physics, Polish Academy of Sciences, aleja Lotników 32/46, Warsaw02-668, Poland
2. Diamond Light Source, Harwell Campus, DidcotOX11 0DE, U.K.
3. Lviv Polytechnic National University, South Bandera Street 12, Lviv79013, Ukraine
4. Ivan Franko National University of Lviv, Tarnavskogo Street 107, Lviv79017, Ukraine