Open AccessDegree of circular polarization of soft X‐rays emitted from a multi‐polarization‐mode undulator characterized by means of magnetic circular dichroism measurements
Author(s) -
Oura Masaki,
Nakamura Tetsuya,
Takeuchi Tomoyuki,
Senba Yasunori,
Ohashi Haruhiko,
Shirasawa Katsutoshi,
Tanaka Takashi,
Takeuchi Masao,
Furukawa Yukito,
Hirono Toko,
Ohata Toru,
Kitamura Hideo,
Shin Shik
Publication year - 2007
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s0909049507040289
Subject(s) - undulator , circular polarization , magnetic circular dichroism , polarization (electrochemistry) , degree of polarization , x ray magnetic circular dichroism , ferrimagnetism , circular dichroism , optics , materials science , radiation , physics , chemistry , scattering , magnetic field , magnetization , crystallography , spectral line , quantum mechanics , astronomy , microstrip
The degree of circular polarization of soft X‐rays emitted from the multi‐polarization‐mode undulator of BL17SU at SPring‐8 has been deduced by means of magnetic circular dichroism in core‐level X‐ray absorption spectroscopy for a ferrimagnetic Gd–Fe–Co amorphous thin film. The results of reference measurements performed using well characterized undulator radiation of BL25SU at SPring‐8 have also been utilized. The degrees of circular polarization were presumed for all the available operational modes and were compared with simple theoretical calculations. It was found that the calculated degrees of circular polarization were validated by the measurements reasonably well and will be useful in further experiments at BL17SU.