X-ray or gamma ray systems or devices – Specific application – Diffraction – reflection – or scattering analysis
Patent
1997-02-07
1998-06-02
Church, Craig E.
X-ray or gamma ray systems or devices
Specific application
Diffraction, reflection, or scattering analysis
378 82, G21K 106
Patent
active
057612560
ABSTRACT:
A curved pyrolytic graphite crystal x-ray monochromator has at least one diffraction surface of graphite crystal for diffracting and monochromizing x-rays generated from an x-ray source so as to bend and/or converge the diffracted and monochromized x-rays, wherein the diffraction surface has a predetermined curved surface. In a method for manufacturing a curved pyrolytic graphite crystal x-ray monochromator, one or more pieces of polymer films are heated at a temperature predetermined in a range from 400.degree. C. to 3500.degree. C. so as to form carbonaceous films, and then, one or more pieces of formed carbonaceous films are superimposed, heated and pressed onto a predetermined curved surface of an isotropic graphite die at a temperature predetermined in a range from 400.degree. C. to 3500.degree. C., while applying a predetermined pressure onto the carbonaceous films provided on the isotropic graphite die, thereby forming the curved pyrolytic graphite x-ray monochromator of graphite crystal having a resulting curved surface corresponding to the predetermined curved surface.
REFERENCES:
patent: 4788703 (1988-11-01), Murakami et al.
patent: 5315113 (1994-05-01), Larson et al.
Murakami et al., "High-Quality And Highly Oriented Graphite Block From Polycondensation Polymer Films", Carbon, vol. 30, No. 2, pp. 255-262, 1992, Great Britain.
Inoue Takao
Matsubara Eiichiro
Murakami Mutsuaki
Nishiki Naomi
Church Craig E.
Matsubara Eiichiro
Matsushita Electric - Industrial Co., Ltd.
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