(a) Block diagram of typical computer-controlled diffractometer and electronic circuits. ... HPIB is the interface bus. ... In this section, only the fixed-time method is described because the fixed-count method takes too long for most practical applications. ... Q = 0.67 for the probable relative error e50 (50% confidence level ) and Q = 1.64 and 2.58 for the 90 and 99% confidence levels (e90, e99), respectively.
|Title||:||International Tables for Crystallography: Mathematical, physical, and chemical tables|
|Author||:||Arthur James Cochran Wilson|