Elements of X-ray Diffraction |
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Page 19
... voltage across the tube . Surrounding the filament is a small metal cup maintained at the same high ( negative ) voltage as the filament : it therefore repels the electrons and tends to focus them into a narrow region of the target ...
... voltage across the tube . Surrounding the filament is a small metal cup maintained at the same high ( negative ) voltage as the filament : it therefore repels the electrons and tends to focus them into a narrow region of the target ...
Page 193
... voltage 7-6 Geiger counters . If the voltage on a proportional counter is in- creased some hundreds of volts , it will act as a Geiger counter . The exact operating voltage is determined in the following way . The counter is exposed to ...
... voltage 7-6 Geiger counters . If the voltage on a proportional counter is in- creased some hundreds of volts , it will act as a Geiger counter . The exact operating voltage is determined in the following way . The counter is exposed to ...
Page 199
... voltage 10 the tube voltage exceeds the critical excitation voltage of the target mate- rial . Suppose , for example , that a copper target ( excitation voltage = 9 kv ) is operated at a peak voltage of 50 kv . Then , if the wave form ...
... voltage 10 the tube voltage exceeds the critical excitation voltage of the target mate- rial . Suppose , for example , that a copper target ( excitation voltage = 9 kv ) is operated at a peak voltage of 50 kv . Then , if the wave form ...
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Common terms and phrases
a₁ absorption coefficient absorption edge alloy analysis angle atomic number austenite axis back-reflection Bragg angle Bragg law Bravais lattice calculated camera circle composition constant copper atoms cos² counter cubic curve Debye ring Debye-Scherrer decrease determined diffracted beam diffraction lines diffraction pattern diffractometer direction distance electrons elements equation error example face-centered face-centered cubic factor film fluorescent fluorescent radiation given grain hexagonal incident beam indices integrated intensity lattice parameter martensite measured metal normal obtained orientation Orthorhombic parallel percent phase photograph pinhole pole figure position powder pattern produced projection pulses rays reciprocal lattice reciprocal-lattice reflecting planes relative residual stress rhombohedral rotation sample scattering shown in Fig sin² slit solid solution spacing specimen spectrometer sphere spot stereographic substance surface temperature tetragonal thickness tion transmission twin unit cell values vector voltage wave wavelength x-ray diffraction x-ray method x-ray tube zero zone