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THE HORIZONTAL INSTRUMENT DIFFRACTION
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20 worm shaft 2a motion adjustment alignment procedure aluminum ARGONNE NATIONAL LABORATORY arrangement attached axis beam stop BF3 detector bolted cadmium masks change the take-off Collimator Door Assembly consists constructed counter arm counter housing coupled CP-5 reactor Cross-sectional View cryostat depleted uranium described diameter Dynaco Gage Blocks goniometer heads insert L-bracket located Masonite means Melvin H monitor count monochromating crystal monochromator holders mounted neutron beam neutron diffraction NEUTRON DIFFRACTOMETER Neutron Spectrometer Nickel Sample Photo of Diffractometer Photo of Goniostat Photo of Spectrometer Picker unit pie-shaped pivot point plane plates platform portable BF3 counter position potentiometer preamp primary beam primary crystal housing pulse rectangular opening ring rotating scalers screws selector housing Showing AX Mechanism shown in Figure single-crystal Slo-Syn solenoid Spectrometer II Showing spur gear stepping motor take-off angle thermal neutrons thick Top View turntable vertical angle selector vertical unit View of Neutron worm gear