| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for determining a condition for producing a glass body suitable for producing a glass body containing each dopant at a concentration close to the set concentration. SOLUTION: In a first step, an initial value V<SB>X1</SB>is set for the flow rate of a raw material gas of a dopant X, and the flow rate V<SB>Y1</SB>of a raw material gas of a dopant Y is determined on the basis of the yield E<SB>Y</SB>(V<SB>X1</SB>) of the dopant Y when the flow rate of the raw material of the dopant X is V<SB>X1</SB>and the set concentration of the dopant Y. In a second step, the flow rate V<SB>X1</SB>of the raw material gas of the dopant X is determined on the basis of the yield E<SB>X</SB>(V<SB>Y1</SB>) of the dopant Y when the flow rate of the raw material of the dopant Y is V<SB>Y1</SB>and the set concentration of the dopant X. The first step and the second step are alternately executed. In the alternate execution of the first and second steps, the flow rates V<SB>X1</SB>and V<SB>Y1</SB>of the raw materials of the dopants X and Y at a time when the expected concentration of each dopant satisfies a predetermined determination condition are determined as the set flow rate V<SB>X0</SB>and V<SB>Y0</SB>. COPYRIGHT: (C)2006,JPO&NCIPI |
