PLENARY SESSIONThermoluminescence and lattice defects in alkali halides

1980 ◽  
Vol 41 (C6) ◽  
pp. C6-353-C6-358 ◽  
Author(s):  
J. L. Alvarez Rivas
Keyword(s):  
Alkali Halides ◽  
Lattice Defects

Formation of Lattice Defects by Two-Photon Excitation in Alkali Halides

1982 ◽  
Vol 113 (2) ◽  
pp. 657-663 ◽  
Author(s):  
J. Provoost ◽  
P. Debergh ◽  
G. Hoebeeck
Keyword(s):  
Alkali Halides ◽  
Lattice Defects ◽  
Two Photon ◽  
Photon Excitation ◽  
Two Photon Excitation

Phosphorescence in Alkali Halides Containing Lattice Defects

1963 ◽  
Vol 10 (10) ◽  
pp. 437-438 ◽  
Author(s):  
Herbert N. Hersh ◽  
Wayne B. Hadley
Keyword(s):  
Alkali Halides ◽  
Lattice Defects

Contrast in Scanning Images of Thin Crystals

1972 ◽  
Vol 30 ◽  
pp. 520-521
Author(s):  
S. Kimoto ◽  
H. Hashimoto ◽  
S. Takashima ◽  
R. M. Stern ◽  
T. Ichinokawa
Keyword(s):  
Crystal Surface ◽  
Solid Angle ◽  
Incident Angle ◽  
Intensity Variation ◽  
Lattice Defects ◽  
Scanning Microscope ◽  
Electron Detector ◽  
Backscattered Electrons ◽  
Electron Image ◽  
Backscattered Electron

The most well known application of the scanning microscope to the crystals is known as Coates pattern. The contrast of this image depends on the variation of the incident angle of the beam to the crystal surface. The defect in the crystal surface causes to make contrast in normal scanning image with constant incident angle. The intensity variation of the backscattered electrons in the scanning microscopy was calculated for the defect in the crystals by Clarke and Howie. Clarke also observed the defect using a scanning microscope.This paper reports the observation of lattice defects appears in thin crystals through backscattered, secondary and transmitted electron image. As a backscattered electron detector, a p-n junction detector of 0.9 π solid angle has been prepared for JSM-50A. The gain of the detector itself is 1.2 x 104 at 50 kV and the gain of additional AC amplifier using band width 100 Hz ∼ 10 kHz is 106.

Crystal structure-size relationship in ultrafine metallic particles

1989 ◽  
Vol 47 ◽  
pp. 266-267
Author(s):  
Jun Liu ◽  
Mehmet Sarikaya ◽  
Ilhan A. Aksay
Keyword(s):  
Ultrafine Particles ◽  
Carbon Film ◽  
Lattice Defects ◽  
Careful Examination ◽  
Seeded Growth ◽  
Gold Particles ◽  
Metallic Particles ◽  
Interfacial Structures ◽  
Typical Particle ◽  
Many Particles

Ultrafine particles usually have unique physical properties. This study illustrates how the lattice defects and interfacial structures between particles are related to the size of ultrafine crystalline gold particles.Colloidal gold particles were produced by reducing gold chloride with sodium citrate at 100°C. In this process, particle size can be controlled by changing the concentration of the reactant. TEM samples are prepared by transferring a small amount of solution onto a thin (5 nm) carbon film which is suspended on a copper grid. In this work, all experiments were performed with Philips 430T at 300 kV.With controlled seeded growth, particles of different sizes are produced, as shown in Figure 1. By a careful examination, it can be resolved that very small particles have lattice defects with complex interfaces. Some typical particle structures include multiple twins, resulting in a five-fold symmetry bicrystals, and highly disordered regions. Many particles are too complex to be described by simple models.

DIFFUSION AND MOBILITY IN ALKALI HALIDES IN THE EXTRINSIC REGION

1973 ◽  
Vol 34 (C9) ◽  
pp. C9-425-C9-430 ◽  
Author(s):  
L. B. HARRIS ◽  
J. L. SCHLEDERER
Keyword(s):  
Alkali Halides

A THEORETICAL STUDY OF INTRINSIC AND EXTRINSIC DEFECT PROPERTIES OF ALKALI HALIDES

1976 ◽  
Vol 37 (C7) ◽  
pp. C7-253-C7-259 ◽  
Author(s):  
C. R.A. CATLOW ◽  
J. CORISH ◽  
K. M. DILLER ◽  
P. W.M. JACOBS ◽  
M. J. NORGETT
Keyword(s):  
Theoretical Study ◽  
Alkali Halides ◽  
Extrinsic Defect

ELECTROLYTIC COLORATION IN ALKALI HALIDES. ROLE OF THE SPACE CHARGE ON THE COLOR PROPAGATION

1976 ◽  
Vol 37 (C7) ◽  
pp. C7-86-C7-86
Author(s):  
M. T. MONTOJO ◽  
F. JAQUE ◽  
C. SÁNCHEZ
Keyword(s):  
Space Charge ◽  
Alkali Halides
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