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Dynamics of replacement sequences and of crowdions
vi
ABSTRACTS OF PAPERS TO APPEAR IN J. PHYS. CHEM. SOLIDS
obtained from the VS dielectric function. This density functional is then used to calculate surface energies and work functions for metal—vacuum interfaces. The results for both surface energies and work functions found in this way are significantly higher than the experimental values. Possible explanations for the discrepancies are discussed.
Vol. 17, No.5
experimental studies of interaction processes of H-centers with other defects in alkali halides. It turns out that at not too low temperatures the rate controffing reaction is the rotation of the centers. A detailed analysis of the kinetics of the various cornpeting processes is given. Received 29 April 1975
Received 14 April 1975 5. 4.
DYNAMICS OF REPLACEMENT SEQUENCES AND OF CROWDIONS GJ. Dienes, Brookhaven National Laboratory, Upton, NY, U.S.A. and R. Smoluchowski, Princeton University and Cavendish Laboratory, Cambndge, England.
The theory of the formation of point defects by ionization in alkali halides has been extended to indude the dynamics of the subsequent motion of replacement sequences and of crowdions (H-centers) at low temperatures. Particular attention is paid to the stochastic aspect of the motion of these centers, which appears to play a crucial role in interpreting recent
SHORT LINEAR RANDOM WALKS R. Smoluchowski, Princeton University and Cavendish Laboratory, Cambridge University, England.
linear random walks are usually descnbed by formulae valid for a large number of steps. Formulae applicable to short walks and to walks in the presence of traps as well as of rotations are given and the per. tinent activation energies in thermally activated processes are discussed. Applicability to interpretation of experimental data is pointed out. .
Received 29 April 975
ABSTRACTS OF PAPERS TO APPEAR IN J. PHYS. CHEM. SOLIDS
obtained from the VS dielectric function. This density functional is then used to calculate surface energies and work functions for metal—vacuum interfaces. The results for both surface energies and work functions found in this way are significantly higher than the experimental values. Possible explanations for the discrepancies are discussed.
Vol. 17, No.5
experimental studies of interaction processes of H-centers with other defects in alkali halides. It turns out that at not too low temperatures the rate controffing reaction is the rotation of the centers. A detailed analysis of the kinetics of the various cornpeting processes is given. Received 29 April 1975
Received 14 April 1975 5. 4.
DYNAMICS OF REPLACEMENT SEQUENCES AND OF CROWDIONS GJ. Dienes, Brookhaven National Laboratory, Upton, NY, U.S.A. and R. Smoluchowski, Princeton University and Cavendish Laboratory, Cambndge, England.
The theory of the formation of point defects by ionization in alkali halides has been extended to indude the dynamics of the subsequent motion of replacement sequences and of crowdions (H-centers) at low temperatures. Particular attention is paid to the stochastic aspect of the motion of these centers, which appears to play a crucial role in interpreting recent
SHORT LINEAR RANDOM WALKS R. Smoluchowski, Princeton University and Cavendish Laboratory, Cambridge University, England.
linear random walks are usually descnbed by formulae valid for a large number of steps. Formulae applicable to short walks and to walks in the presence of traps as well as of rotations are given and the per. tinent activation energies in thermally activated processes are discussed. Applicability to interpretation of experimental data is pointed out. .
Received 29 April 975