Higher-harmonics suppressor for soft x rays

Journal Article · Sat Jul 01 00:00:00 EDT 1989 · Rev. Sci. Instrum.; (United States)

DOI:https://doi.org/10.1063/1.1140829· OSTI ID:5831857

Waki, I; Hirai, Y; Momose, A; Hayakawa, K

We have developed an apparatus for suppressing higher harmonics contained in the soft x-ray output beam of grazing-incidence grating monochromators. It consists of eight pairs of total-reflection mirrors. Each pair serves as a low-pass filter with the cutoff energy different from one another. The eight pairs are designed to cover an energy range of 80--1600 eV with an efficiency of harmonic suppression better than 97%, while transmitting more than 50% of the fundamental photons. We have tested its preliminary performance on the soft x-ray beamline BL-8A at the Photon Factory. We present the observed transmission efficiencies and the effects of the harmonic suppressor on measurements of reflectivity and fluorescence spectra.

• Research Organization: Advanced Research Laboratory, Hitachi, Ltd., Kokubunji, Tokyo 185, Japan (JP)
• OSTI ID: 5831857
• Journal Information: Rev. Sci. Instrum.; (United States), Vol. 60:7
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
MAGNESIUM FLUORIDES
REFLECTIVITY
MIRRORS
SOFT X RADIATION
X-RAY EQUIPMENT
EFFICIENCY
FABRICATION
FLUORESCENCE
HARMONICS
INCIDENCE ANGLE
INHIBITION
KEK PHOTON FACTORY
MONOCHROMATORS
PERFORMANCE TESTING
REFLECTION
TRANSMISSION
ALKALINE EARTH METAL COMPOUNDS
ELECTROMAGNETIC RADIATION
EQUIPMENT
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
IONIZING RADIATIONS
LUMINESCENCE
MAGNESIUM COMPOUNDS
OPTICAL PROPERTIES
OSCILLATIONS
PHYSICAL PROPERTIES
RADIATION SOURCES
RADIATIONS
SURFACE PROPERTIES
SYNCHROTRON RADIATION SOURCES
TESTING
X RADIATION
430303* - Particle Accelerators- Experimental Facilities & Equipment
430400 - Particle Accelerators- Storage Rings