TY  - JOUR
AU  - Wilson, Daniel
AU  - Rudolf, Denis
AU  - Weier, Christian
AU  - Adam, Roman
AU  - Winkler, Gerrit
AU  - Frömter, Robert
AU  - Danylyuk, Serhiy
AU  - Bergmann, Klaus
AU  - Grützmacher, Detlev
AU  - Schneider, Claus M.
AU  - Juschkin, Larissa
TI  - Generation of circularly polarized radiation from a compact plasma-based extreme ultraviolet light source for tabletop X-ray magnetic circular dichroism studies
JO  - Review of scientific instruments
VL  - 85
IS  - 10
SN  - 1089-7623
CY  - [S.l.]
PB  - American Institute of Physics
M1  - FZJ-2014-05438
SP  - 103110 
PY  - 2014
AB  - Generation of circularly polarized light in the extreme ultraviolet (EUV) spectral region (about 25 eV–250 eV) is highly desirable for applications in spectroscopy and microscopy but very challenging to achieve in a small-scale laboratory. We present a compact apparatus for generation of linearly and circularly polarized EUV radiation from a gas-discharge plasma light source between 50 eV and 70 eV photon energy. In this spectral range, the 3p absorption edges of Fe (54 eV), Co (60 eV), and Ni (67 eV) offer a high magnetic contrast often employed for magneto-optical and electron spectroscopy as well as for magnetic imaging. We simulated and designed an instrument for generation of linearly and circularly polarized EUV radiation and performed polarimetric measurements of the degree of linear and circular polarization. Furthermore, we demonstrate first measurements of the X-ray magnetic circular dichroism at the Co 3p absorption edge with a plasma-based EUV light source. Our approach opens the door for laboratory-based, element-selective spectroscopy of magnetic materials and spectro-microscopy of ferromagnetic domains.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000344594200010
DO  - DOI:10.1063/1.4897491
UR  - https://juser.fz-juelich.de/record/171882
ER  -