Stability of some soft-x-ray monochromator crystals in synchrotron radiation

Conference · Thu Jan 01 04:00:00 EST 1981

OSTI ID:5811545

Wong, J; Roth, W L; Batterman, B W; Berman, L E; Pease, D M; Heald, S; Barbee, T

The stability in synchrotron radiation of ..beta..-alumina and beryl has been investigated by exposing the crystals in a white beam at CHESS operating at 5.2 GeV electron energy over 100 hours at an average radiant power of 28 W/cm/sup 2/. Rocking curves at the CuK/sub ..cap alpha../ energy were used to monitor the diffraction properties before and after exposure to synchrotron radiation. A Si(220) crystal was used as the first crystal. It was found that both materials exhibit no catastrophic material failure. ..beta..-alumina is clearly proven stable with no degradation of its rocking characteristics. There was in fact indication of reflectivity improvement after exposure. Results on beryl are not conclusive because the starting material (a mineral specimen) had a lot of inherent microstructural and crystallographic defects. Rocking curves in the soft x-ray region at 10.5 A were also determined using a (1010) RAP crystal as first crystal. A 19-layer 50 A d-spacing Nb-C sputtered film was also characterized for comparison.

• Research Organization: Brookhaven National Lab., Upton, NY (USA); General Electric Co., Schenectady, NY (USA). Research and Development Center; State Univ. of New York, Albany (USA). Dept. of Physics; Cornell Univ., Ithaca, NY (USA). Dept. of Physics; Connecticut Univ., Storrs (USA). Dept. of Physics; Stanford Univ., CA (USA). Dept. of Materials Science
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 5811545
• Report Number(s): BNL-30166; CONF-810750-10; ON: DE82001819
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360206 -- Ceramics
Cermets
& Refractories-- Radiation Effects
440200* -- Radiation Effects on Instrument Components
Instruments
or Electronic Systems
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
BERYL
BERYLLIUM COMPOUNDS
BERYLLIUM SILICATES
BREMSSTRAHLUNG
CARBON
CHALCOGENIDES
COMPOSITE MATERIALS
CRYSTALS
ELECTROMAGNETIC RADIATION
ELEMENTS
FILMS
IONIZING RADIATIONS
MATERIALS
METALS
MINERALS
MONOCHROMATORS
NIOBIUM
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
RADIATIONS
REFRACTORY METALS
SILICATES
SILICON COMPOUNDS
SOFT X RADIATION
STABILITY
SYNCHROTRON RADIATION
TRANSITION ELEMENTS
X RADIATION