Patent ID: 8780193

Claim:
A physical properties measuring method comprising: irradiating a convergent electron beam to a sample, and acquiring an experimental diffraction pattern of said sample based on Bragg scattering; calculating Zernike moment intensities of said experimental diffraction pattern; and comparing said Zernike moment intensities of said experimental diffraction pattern with Zernike moment intensities of each of ideal diffraction patterns which are calculated on changed physical properties of said sample, wherein said Zernike moment intensities are intensities of Zernike moments A n,m , said Zernike moments A n,m having an intensity f(x, y) in an (x, y) coordinate system are represented by A n , m = n + 1 π ⁢ ∫ ⅆ x ⁢ ∫ ⅆ yf ⁡ ( x , y ) ⁢ V n . , m * ⁡ ( x , y ) where V n, m (x, y) is represented by V n , m ⁡ ( x , y ) = ∑ s = 0 ( n -  m  ) / 2 ⁢ ( - 1 ) s ⁢ ( n - s ) ! ⁢ ρ n - 2 ⁢ ⁢ s s ! ⁡ [ ( n +  m  ) / 2 - s ] ! ⁡ [ ( n -  m  ) / 2 - s ] ! ⁢ exp ⁡ ( im ⁢ ⁢ θ ) where n and m are both integers, |m|<=n, n−|m| is even, ρ=√(x 2 +y 2 ) and θ=tan −1 (y/x).