Table 1.

Variation in thickness of the grain selector portion.

Z-Form Grain Selector with Various Diameter	Single Crystal				Stray Grain
Stray Grain	No				Yes
Probe	Zd1	Zd2	Zd3	Zd4	Zd5	Zd6	Zd7	Zd8
Diameter (cm)	0.18	0.22	0.26	0.30	0.38	0.42	0.46	0.54