Solid-state detectors
                        
                        
                            Parrish, W. and 
Langford, J. I., 
                        
                        
                                        
                                            International Tables for Crystallography
                                         (2006). 
                                         
                                            Vol. C,
                                            
                                                            
                                                                Section 7.1.4.2,
                                                                    
                                                            
                                                                pp. 620-620
                                                                        
                                            
                                        
                        
                        
[ doi:10.1107/97809553602060000604 ]
                        
                            
                                     [
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                                    results from section 7.1.4 in volume C]
                            
                            
                            
                            
                    
                        
                            Proportional counters
                        
                        
                            Parrish, W. and 
Langford, J. I., 
                        
                        
                                        
                                            International Tables for Crystallography
                                         (2006). 
                                         
                                            Vol. C,
                                            
                                                            
                                                                Section 7.1.3.2,
                                                                    
                                                            
                                                                pp. 619-619
                                                                        
                                            
                                        
                        
                        
[ doi:10.1107/97809553602060000604 ]
                        
                            
                                     [
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                                    results from section 7.1.3 in volume C]
                            
                            
                            
                            
                    
                        
                            Geiger counters
                        
                        
                            Parrish, W. and 
Langford, J. I., 
                        
                        
                                        
                                            International Tables for Crystallography
                                         (2006). 
                                         
                                            Vol. C,
                                            
                                                            
                                                                Section 7.1.2,
                                                                    
                                                            
                                                                pp. 618-619
                                                                        
                                            
                                        
                        
                        
[ doi:10.1107/97809553602060000604 ]
                        
                            
                            
                            
                            
                    
                        
                            Powder and related techniques: X-ray techniques
                        
                        
                            Parrish, W. and 
Langford, J. I., 
                        
                        
                                        
                                            International Tables for Crystallography
                                         (2006). 
                                         
                                            Vol. C,
                                            
                                                            
                                                                        ch. 2.3,
                                                            
                                                            
                                                                pp. 42-79
                                                                        
                                            
                                        
                        
                        
[ doi:10.1107/97809553602060000578 ]
                        
                            
                            
                            
                            
                    
                        
                            Spectral purity
                        
                        
                            Parrish, W. and 
Langford, J. I., 
                        
                        
                                        
                                            International Tables for Crystallography
                                         (2006). 
                                         
                                            Vol. C,
                                            
                                                            
                                                                Section 2.3.5.1.2,
                                                                    
                                                            
                                                                pp. 72-72
                                                                        
                                            
                                        
                        
                        
[ doi:10.1107/97809553602060000578 ]
                        & Parrish, 1959). The contaminating elements can be identified from the extra peaks. It is advisable to check the spectral purity when the tube is new and periodically thereafter. 
 
 
 
    References   
       Ladell, J. & 
Parrish, 
W. (1959 ...
                            
                                
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more
                                    results from section 2.3.5 in volume C]
                            
                            
                            
                            
                    
                        
                            Use of peak or centroid for angle definition
                        
                        
                            Parrish, W. and 
Langford, J. I., 
                        
                        
                                        
                                            International Tables for Crystallography
                                         (2006). 
                                         
                                            Vol. C,
                                            
                                                            
                                                                Section 2.3.3.3,
                                                                    
                                                            
                                                                pp. 63-63
                                                                        
                                            
                                        
                        
                        
[ doi:10.1107/97809553602060000578 ]
                         the Bragg equation becomes nonlinear in the sense that the 1:1 correspondence between λ and    is lost. 
 
 
 
    References   
       Ladell, J., 
Parrish, 
W. & Taylor, J. (1959).   Interpretation of diffractometer line profiles. Acta Cryst.     12 ...
                            
                                
     [
more
                                    results from section 2.3.3 in volume C]
                            
                            
                            
                            
                    
                        
                            Powder cameras
                        
                        
                            Parrish, W. and 
Langford, J. I., 
                        
                        
                                        
                                            International Tables for Crystallography
                                         (2006). 
                                         
                                            Vol. C,
                                            
                                                            
                                                                Section 2.3.4,
                                                                    
                                                            
                                                                pp. 70-71
                                                                        
                                            
                                        
                        
                        
[ doi:10.1107/97809553602060000578 ]
                         & Werner, P. E. (1973).   Automatic densitometer measurement of powder diffraction photographs. Acta Chem. Scand.     27, 493–502. Google Scholar 
 
       
Parrish, 
W. (1955).   Elimination of the second image in double-coated film. Norelco Rep.     2 ...
                            
                                
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                                    results from section 2.3.4 in volume C]
                            
                            
                            
                            
                    
                        
                            Grazing-incidence diffraction
                        
                        
                            Parrish, W. and 
Langford, J. I., 
                        
                        
                                        
                                            International Tables for Crystallography
                                         (2006). 
                                         
                                            Vol. C,
                                            
                                                            
                                                                Section 2.3.2.3,
                                                                    
                                                            
                                                                pp. 58-58
                                                                        
                                            
                                        
                        
                        
[ doi:10.1107/97809553602060000578 ]
                        intensity is an order of magnitude lower than (a). 
  
  
 
 
 
 
    References   
       Lim, G., 
Parrish, 
W., Ortiz, C., Bellotto, M. & Hart, M. (1987).   Grazing incidence synchrotron X-ray diffraction method for analyzing thin films. J. Mater ...
                            
                                
     [
more
                                    results from section 2.3.2 in volume C]
                            
                            
                            
                            
                    
                        
                            Combined aberrations
                        
                        
                            Parrish, W. and 
Langford, J. I., 
                        
                        
                                        
                                            International Tables for Crystallography
                                         (2006). 
                                         
                                            Vol. C,
                                            
                                                            
                                                                Section 2.3.1.1.8,
                                                                    
                                                            
                                                                pp. 50-50
                                                                        
                                            
                                        
                        
                        
[ doi:10.1107/97809553602060000578 ]
                        
                            
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                                    results from section 2.3.1 in volume C]
                            
                            
                            
                            
                    
                        
                            X-ray diffraction methods: polycrystalline
                        
                        
                            Parrish, W., 
Wilson, A. J. C. and 
Langford, J. I., 
                        
                        
                                        
                                            International Tables for Crystallography
                                         (2006). 
                                         
                                            Vol. C,
                                            
                                                            
                                                                        ch. 5.2,
                                                            
                                                            
                                                                pp. 491-504
                                                                        
                                            
                                        
                        
                        
[ doi:10.1107/97809553602060000596 ]
                         J. Cryst. Growth,   55, 409–427. Google Scholar 
 
       Hart, M., Cernik, R., 
Parrish, 
W. & Toraya, H. (1990).   Lattice parameter determination for powders using synchrotron radiation. J. Appl. Cryst.     23, 286–291. Google Scholar ...