Defect Structure and Density Decrease in Neutron-Irradiated Quartz

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概要

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• Lattice defects in quartz induced by fast neutron irradiation were studied by combined methods of x-ray diffraction and transmission electron microscopy. The developed defect structure is characterized by clusters of interstitials enriched in ruptured silicon atoms. The size and density of the defect clusters increase with increasing dose until mutual interaction occurs, resulting in the formation of a stable, hexagonal-like structure resistant to prolonged annealing at 500℃. In thin crystals the size and volume fraction of the defect clusters are dependent on crystal orientation, being related to the open screw channels of the quartz structure. A relationship was established between the total volume fraction of defect clusters and fractional decrease in density induced by neutron irradiation, accounting satisfactorily for the hydrostatic density measurements reported in the literature.

• 東北大学の論文

著者

• Weissmann Sigmund

  College Of Engineering Rutgers The State University

• Nakajima Koichi

  The Research Institute For Iron Steel And Other Metals

関連論文

• Lattice Defects of Quartz Induced by Fast Neutron Irradiation
• Sub-Boundaries in Aluminium Single Crystals
• Change in Laue Diagram of Aluminium Single Crystal by Cold-Working
• Relation between Deformation and Integrated Intensity of X-Ray in Aluminium Single Crystals
• X-Ray Study of the Effect of Solute Atoms on Deformation Stacking Faults in Face-Centred Cubic Solid Solutions
• Defect Structure and Density Decrease in Neutron-Irradiated Quartz
• Scratch Hardness. II : X-Ray Investigation of Structural Change
• Stacking Faults in Copper-Nickel Alloys
• X-Ray Study of Cold-Worked Metal Single Crystals
• Study of Cold-Working by Microfocussing X-Ray. I : Fine Structure of Laue Spot

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