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3.5 Application in Enviroment Study . . . . . 64
3.5.1 Atmospheric pollution . . . . . . 64
3.5.2 Industrial Waste . . . . . . . . . 65
3.5.3 Soils and Sediments . . . . . . . 65
3.5.4 Plants, Man, Animal . . . . . . . 65
3.5.5 Aquatic Environment . . . . . . . 66
3.5.6 Application in Human Health . . 66
3.5.7 Application in Materials Science 67
3.5.8 Applications in Forensic . . . . . 68
3.5.9 Applications in Art and Archeology 69
3.5.10 Activable Stable Tracers . . . . . 70
3.6 summary . . . . . . . . . . . . . . . . . 71
4 Diffraction Technique and Application 73
4.1 Neutron Diffraction Technique . . . . . . 74
4.2 Design of devices . . . . . . . . . . . . 74
4.2.1 Collimator . . . . . . . . . . . . . 77
4.2.2 Monochromator . . . . . . . . . . 78
4.2.3 Aperture slit . . . . . . . . . . . . 79
4.2.4 Detection system . . . . . . . . . 80
4.3 Neutron wavelength measurement . . . 80
4.4 Application of Neutron Diffractions . . . 83
4.4.1 Measurement of Crystalline Struc-
ture . . . . . . . . . . . . . . . . 85
4.4.2 Measurement of Residual Stress 88
Bibliography . . . . . . . . . . . . . . . . . . . 93
5 Neutron Imaging 95
5.1 Radiography . . . . . . . . . . . . . . . 95
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