DEFECT STRUCTURE AND DENSITY DECREASE IN NEUTRON-IRRADIATED QUARTZ

Journal Article · Fri Mar 01 04:00:00 EST 1963 · Journal of Applied Physics (U.S.)

DOI:https://doi.org/10.1063/1.1729317· OSTI ID:4720813

Weissmann, S; Nakajima, K

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 strucrure 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 it 500 l C. In thin crystala 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 irridiation, accounting satisfactorily for the hydrostatic density, measurements reported in the literature. (auth)

• Research Organization: Rutgers Univ., New Brunswick, N.J.
• Sponsoring Organization: USDOE
• NSA Number: NSA-17-024021
• OSTI ID: 4720813
• Report Number(s): NYO-10445; 0021-8979
• Journal Information: Journal of Applied Physics (U.S.), Journal Name: Journal of Applied Physics (U.S.) Vol. Vol: 34; ISSN JAPIA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ANNEALING
CONFIGURATION
DEFECTS
DENSITY
DIFFRACTION
ELECTRON MICROSCOPY
FAST NEUTRONS
INTERSTITIALS
IRRADIATION
LATTICES
METALS, CERAMICS, AND OTHER MATERIALS
QUARTZ
RADIATION EFFECTS
X RADIATION