## Elements of X-ray DiffractionIntended 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. 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. Designed for beginners, not as a reference tool for the advanced reader. |

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Page 44

A slightly different system of plane indexing is used in the

unit cell of a

and a2, at l20° to one another, and a third axis c at right angles [Fig. 2-l l(a)].

A slightly different system of plane indexing is used in the

**hexagonal**system. Theunit cell of a

**hexagonal**lattice is defined by two equal and coplanar vectors a,and a2, at l20° to one another, and a third axis c at right angles [Fig. 2-l l(a)].

Page 335

graphical methods, since the

characterized by two variable parameters, a and c . The plane-spacing equation

is J_ ^ 4 h2 + hk ...

**Hexagonal**System Patterns of**hexagonal**crystals can also be indexed bygraphical methods, since the

**hexagonal**unit cell, like the tetragonal, ischaracterized by two variable parameters, a and c . The plane-spacing equation

is J_ ^ 4 h2 + hk ...

Page 504

Bernard Dennis Cullity. APPENDIX 4 THE RHOMBOHEDRAL-

TRANSFORMATION The lattice of points shown in Fig. A4-l is rhombohedral, that

is, it possesses the symmetry elements characteristic of the rhombohedral system

.

Bernard Dennis Cullity. APPENDIX 4 THE RHOMBOHEDRAL-

**HEXAGONAL**TRANSFORMATION The lattice of points shown in Fig. A4-l is rhombohedral, that

is, it possesses the symmetry elements characteristic of the rhombohedral system

.

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#### LibraryThing Review

User Review - ron_benson - LibraryThingExcellent reference book. Needs some updating in terms of advances in detector technology. Read full review

### Contents

Geometry of Crystals | 32 |

Directions of Diffracted Beams | 81 |

Intensities of Diffracted Beams | 107 |

Copyright | |

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### Common terms and phrases

absorption coefficient alloy atomic number austenite axes back-reflection body-centered Bragg angle Bragg law Bravais lattice calculated camera circle collimator constant copper cos2 counter counting rate cubic curve Debye ring Debye-Scherrer decreases determined diffracted beam diffraction lines diffraction pattern diffractometer diffractometer axis direction effect electron elements energy equation error example face-centered face-centered cubic factor film filter given grain hexagonal incident beam indices integrated intensity lattice parameter Laue method Laue spot martensite measured metal neutron normal obtained orthorhombic parallel percent phase photographic pinhole point lattice pole figure position powder pattern preferred orientation produced pulses random reciprocal lattice reciprocal-lattice reflecting planes relative rhombohedral rotation sample sheet shown in Fig shows sin2 0 values slit solid solution spacing specimen spectrometer sphere substance surface symmetry temperature tetragonal texture thickness transmission unit cell vector voltage wave wavelength x-ray beam x-ray diffraction x-ray tube zero zone