| 摘要 |
For an apparatus for growing single crystals by the floating zone method, a pair of congruent prolate spheroidal reflectors for radiant energy are disposed outwardly of each other with their major axes aligned and with the distance between their axially inwardly disposed foci being less than the diameter of a molten zone placed at the location of these foci. A pair of congruent halogen lamps for supplying the radiant energy are held inside the respective spheroidal surfaces with their logitudinal axes parallel to the major axes and with the center of each lamp placed, apart from the axially outwardly disposed focus, less than a quarter of the longitudinal dimension of the lamps and a half of the transverse dimension thereof in the directions parallel and perpendicular to the major axes, respectively. |
