| 摘要 |
A single crystal production apparatus wherein the chamber has a top plate part, a bottom plate part and a barrel part, the barrel part is in a hollow cylindrical shape and made of quartz glass and connects the top plate part with the bottom plate part, an openable/closable reflective member is provided on the outer circumference of the barrel part, and the reflective member is divided in the circumferential direction and reflects heat and light radiated from the inside of the chamber. |
