Author/Authors :
Giles، نويسنده , , Carlos and Malgrange، نويسنده , , Cécile and de Bergevin، نويسنده , , François and Goulon، نويسنده , , José and Baudelet، نويسنده , , François and Fontaine، نويسنده , , Alain and Vettier، نويسنده , , Christian and Freund، نويسنده , , Andreas، نويسنده ,
Abstract :
It is shown that a beryllium crystal whose mosaicity is of the order of 80 arcsec can be used as an efficient X-ray quarter-wave plate. The experiment is realized on the energy dispersive absorption spectrometer at LURE (Orsay, France), where X-ray circular magnetic dichroic spectra, proportional to the circular polarization rate, are recorded.