Open AccessApplications of VUV extra‐focus mechanism: high‐performance dual‐mode monochromator from VUV to soft X‐ray
Author(s) -
Xue Chaofan,
Wu Yanqing,
Zou Ying,
Xue Lian,
Guo Zhi,
Wang Yong,
Tai Renzhong
Publication year - 2015
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/s1600577515015519
Subject(s) - monochromator , grating , optics , synchrotron radiation , soft x rays , physics , materials science , wavelength , laser
A new monochromator scheme is presented in which an extra‐focus constant‐included‐angle varied‐line‐spacing cylindrical‐grating monochromator (extra‐focus CIA‐VCGM) is conveniently combined with a variable‐included‐angle varied‐line‐spacing plane‐grating monochromator (VIA‐VPGM). This dual‐mode solution delivers high performance in the energy range from vacuum ultraviolet (VUV) to soft X‐ray. The resolving power and the efficiency of this dual‐mode grating monochromator are analyzed in detail based on realistic parameters. Comparisons with the commonly used variable‐included‐angle plane‐grating monochromator and normal‐incidence monochromator (VIA‐PGM/NIM) hybrid monochromator are made.