FIELD: X-ray devices for medical diagnostics. SUBSTANCE: hyperbolic recess is made in center of substrate, Its depth is in range of 0.3-0.7 of substrate depth and diameter is in range of 0.2-0.5 of substrate diameter. This results in possibility to provide uniform heating of graphite substrate and decreased level of extending strain. EFFECT: increased service life and increased reliability. 1 dwg
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Authors
Dates
1997-05-10—Published
1995-03-03—Filed