Patent ID: 6937694

Claim:
A pole measuring method for measuring a pole of a sample, the method comprising the steps of: setting an incident angle (ω) of an X-ray with respect to the surface of a sample to a predetermined position corresponding to the pole measuring position, when the sample is tilted by a preset tilting angle (α), by rotating the sample about a predetermined axis (Ω axis) passing through a predetermined origin (O), on the basis of the preset tilting angle (α) of the sample; revolving an X-ray detector by an angle (2θ) about said predetermined axis (Ω axis) along a first plane perpendicular to said predetermined axis (Ω axis) and revolving the X-ray detector by an angle (2θ χ ) about the origin (O) along a second plane including said predetermined axis (Ω axis) and perpendicular to said first plane, on the basis of said preset tilting angle (α), whereby the X-ray detector is disposed at a predetermined position corresponding to a pole measuring position when the sample is tilted by said preset tilting angle (α); calculating a correction angle (Δβ) with respect to a measuring angle (φ) of the sample in an in-plane rotational direction on the basis of said preset tilting angle (α), and setting the measuring angle (φ) of the sample in the in-plane rotational direction, said measuring angle (φ) being obtained by adding said correction angle (Δβ) to a preset measuring angle (β) of the sample in the in-plane rotational direction; and detecting X-rays diffracted from the surface of the sample using said X-ray detector.