Elements of X-ray Diffraction
Prentice Hall, 2001 - Technology & Engineering - 664 pages
Intended to acquaint the reader with the theory of x-ray diffraction, the experimental methods involved, and the main applications. The book is a collection of principles and methods stressing X-ray diffraction rather than metallurgy. KEY TOPICS: The book is written entirely in terms of the Bragg law and can be read without any knowledge of the reciprocal lattice. It is divided into three main parts--Fundamentals; experimental methods; and applications. MARKET: Designed for beginners, not as a reference tool for the advanced reader.
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VOLTAGE Д A ^ TIME Figure 6-12 Randomly spaced voltage pulses produced by
a detector . tion of entering quanta were absolutely periodic in time , the
maximum counting rate without losses would be given simply by 1 / ts . But even
if their ...
Measure the counting rate with a ratemeter or scaler while slowly increasing the
voltage applied to the counter from a low value . Figure 6-19 shows how the
counting rate will vary with voltage . Below the starting voltage the pulse size is
( T.C. ) , ( T.C. ) 2 ( T.C. ) ; COUNTING RATE Am average counting rate TIME
Figure 6-30 Effect of time constant ( T.C. ) on recorded fluctuations in counting
rate at constant x - ray intensity ( schematic ) . Time constants changed abruptly
at times ...