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Figure 6
Observations of the X-ray intensity change of the U-shape target under three different conditions. The dimensions of counts s−1 W−1 can be changed to the brightness expression of photons s−1 mm−2 mrad−2 (0.1% bandwidth)−1 W−1 by multiplication by the coefficient constant 0.36 × 105; and where the focus size was S = 1.96 × 10−3, the pinhole area was s = 78.54 µm2, and the pinhole distance from the focus point L = 75 mm, namely, s/L2 = 1.4 × 10−2 mrad2 (0.1% bandwidth) being that of the Cu Kα band pass.

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