Lower limit for disappearance rate of F-centers in irradiated alkali halide compounds

1976 ◽  
Vol 25 (5) ◽  
pp. 1132-1134
Author(s):  
I. E. Makarov ◽  
T. N. Zhukova ◽  
A. K. Pikaev
Keyword(s):  
Lower Limit ◽  
Alkali Halide ◽  
Disappearance Rate ◽  
F Centers

On the Anderson Transition in Electronic Color Centers Systems in Alkali Halide Crystals

1982 ◽  
Vol 37 (6) ◽  
pp. 613-614
Author(s):  
A. A. Berezin
Keyword(s):  
Alkali Halide ◽  
Random Potential ◽  
High Concentration ◽  
Potential Fluctuations ◽  
Anderson Transition ◽  
Anion Vacancies ◽  
Alkali Halide Crystals ◽  
Localization Condition ◽  
Positively Charged ◽  
F Centers

Abstract An alkali halide crystal with a high concentration of F-centers is considered. If some of these F-centers are ionized into anion vacancies (a-centers) released electrons can be trapped by other F-centers to form F′-centers. It is shown that for each original concentration of F-centers there is a certain concentration of F′-centers for which the random potential fluctuations due to negatively charged F′-centers and positively charged a-centers have enough amplitude to create Anderson localization condition in the system of F-, F′- and a-centers.

Photoacoustic Signals from F Centers in Alkali Halide Crystals

1984 ◽  
Vol 53 (5) ◽  
pp. 1621-1623 ◽  
Author(s):  
Katsuyuki Inabe ◽  
Shoichi Nakamura ◽  
Nozomu Takeuchi
Keyword(s):  
Alkali Halide ◽  
Alkali Halide Crystals ◽  
F Centers

On the nature of spontaneous rupture of F centers in alkali-halide crystals

1975 ◽  
Vol 18 (4) ◽  
pp. 541-542
Author(s):  
Yu. M. Annenkov ◽  
V. F. Pichugin ◽  
T. S. Frangul'yan
Keyword(s):  
Alkali Halide ◽  
Spontaneous Rupture ◽  
Alkali Halide Crystals ◽  
F Centers

Electronic States of F-Centers in Alkali Halide Crystals

1996 ◽  
Vol 65 (8) ◽  
pp. 2564-2570 ◽  
Author(s):  
Katsuyuki Matsunaga ◽  
Nobutaka Narita ◽  
Isao Tanaka ◽  
Hirohiko Adachi
Keyword(s):  
Alkali Halide ◽  
Electronic States ◽  
Alkali Halide Crystals ◽  
F Centers

Characteristics of F centers in the ground and excited states in alkali halide crystals

2006 ◽  
Vol 48 (3) ◽  
pp. 453-459
Author(s):  
A. N. Varaksin ◽  
A. B. Sobolev ◽  
V. G. Panov
Keyword(s):  
Excited States ◽  
Alkali Halide ◽  
Alkali Halide Crystals ◽  
F Centers

Supernovae and interstellar gas dynamics

1967 ◽  
Vol 31 ◽  
pp. 117-119
Author(s):  
F. D. Kahn ◽  
L. Woltjer
Keyword(s):  
Lower Limit ◽  
High Velocity ◽  
Gas Dynamics ◽  
Interstellar Cloud ◽  
Interstellar Gas ◽  
Random Motions ◽  
Relativistic Particles

The efficiency of the transfer of energy from supernovae into interstellar cloud motions is investigated. A lower limit of about 0·002 is obtained, but values near 0·01 are more likely. Taking all uncertainties in the theory and observations into account, the energy per supernova, in the form of relativistic particles or high-velocity matter, needed to maintain the random motions in the interstellar gas is estimated as 1051·4±1ergs.

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