TY - JOUR
T1 - 6.65 m off-plane eagle spectrograph/monochromator at the photon factory
AU - Ito, Kenji
AU - Sasaki, Taizo
AU - Namioka, Takeshi
AU - Ueda, Kiyoshi
AU - Morioka, Yumio
PY - 1986/5/15
Y1 - 1986/5/15
N2 - A description is given of the design principle and the performance of a 6.65 m vertical dispersion off-plane Eagle spectrograph/monochromator (6VOPE) constructed at the Photon Factory. 6VOPE has a unique predisperser system of zero dispersion type that effectively separates the overlapping orders by a simple rotation of the fore-gratings and adjustment of the intermediate slit width. The performance of 6VOPE was examined from the viewpoint of resolution by taking absorption spectra of rare gases in the 50-90 nm region with the 6th to 10th orders. The resolving power was estimated from the separation between two closely lying lines of Ar I at ∼ 79 nm to be ≳ 2.5 × 105, the highest resolving power ever reported for this wavelength region.
AB - A description is given of the design principle and the performance of a 6.65 m vertical dispersion off-plane Eagle spectrograph/monochromator (6VOPE) constructed at the Photon Factory. 6VOPE has a unique predisperser system of zero dispersion type that effectively separates the overlapping orders by a simple rotation of the fore-gratings and adjustment of the intermediate slit width. The performance of 6VOPE was examined from the viewpoint of resolution by taking absorption spectra of rare gases in the 50-90 nm region with the 6th to 10th orders. The resolving power was estimated from the separation between two closely lying lines of Ar I at ∼ 79 nm to be ≳ 2.5 × 105, the highest resolving power ever reported for this wavelength region.
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U2 - 10.1016/0168-9002(86)90093-8
DO - 10.1016/0168-9002(86)90093-8
M3 - Article
AN - SCOPUS:0022064025
VL - 246
SP - 290
EP - 293
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
SN - 0168-9002
IS - 1-3
ER -