Bragg, William Henry, Sir, 1862-1942, Bragg, William Lawrence, Sir, 1890-1971 · London : G. Bell · leaf 42
SPECTROMETER 27 the reflection of the first order only) given byA = 2rtsin 6, where 6 is the angle SAN. The wavesreflected along BC have a wave length equal to2^sin SEN, and so on. Thus the radiation isanalysed into a spectrum along CD ; and if thevarious distances and angles are measured, the… … Fig. 5. source 5. The slit at B is not wanted, and may beleft wide ; the slit of the ionisation chamber must benarrow. Unless the cathode rays impinge on arather large area of the anticathode, so that a pencilof some divergence passes through A, the range of thespectrum on CD (Fig. 5) is only…
Crystallography · X-rays
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