ChemInform Abstract: EPR Investigation of Electronic Excitations in Rare Gas Solids

ChemInform ◽  
2010 ◽  
Vol 30 (43) ◽  
pp. no-no
Author(s):  
R. A. Zhitnikov ◽  
Yu. A. Dmitriev
Keyword(s):  
Rare Gas ◽  
Electronic Excitations

scholarly journals EPR investigation of electronic excitations in rare gas solids (Review Article)

1998 ◽  
Vol 24 (10) ◽  
pp. 693-707 ◽  
Author(s):  
R. A. Zhitnikov ◽  
Yu. A. Dmitriev
Keyword(s):  
Review Article ◽  
Rare Gas ◽  
Electronic Excitations

Branched relaxation of electronic excitations in rare-gas crystals with traps of different types

2000 ◽  
Vol 12 (12) ◽  
pp. 2769-2781 ◽  
Author(s):  
A N Ogurtsov ◽  
A M Ratner ◽  
E V Savchenko ◽  
V Kisand ◽  
S Vielhauer
Keyword(s):  
Rare Gas ◽  
Electronic Excitations ◽  
Different Types

RARE GAS PRECIPITATES IN METALS AS QUANTUM DOTS FOR THE POLARITONS

2001 ◽  
Vol 15 (28n30) ◽  
pp. 3685-3689
Author(s):  
IGOR GOLINEY ◽  
VOLODYMYR SUGAKOV
Keyword(s):  
Spatial Dispersion ◽  
Energy Spectra ◽  
Collective Excitations ◽  
Rare Gas ◽  
Reflection Spectra ◽  
Optical Transitions ◽  
Electronic Excitations ◽  
Size Quantization ◽  
Surface Polariton ◽  
Exciton Interactions

Energy spectra of the size quantization of excitons in Xe, Kr, Ar and Ne precipitates in Al and their manifestation in reflection spectra are calculated taking into account polariton effects (dipole-dipole exciton interactions), spatial dispersion and mixing of the electronic excitations of the inclusion with collective excitations of the surrounding metal (plasmons). It was shown that: 1) the proximity of energies of the exciton levels and the plasmons localized on the inclusion (surface plasmons) results in the gigantic shift (up to 1 eV) of the levels of coupled excitations, 2) the transfer of the oscillator strength from the plasmon level to the exciton levels leads to the amplification of optical transitions in bubbles by several orders of magnitude. Depending on the position of the surface polariton with respect to the surface plasmon the spectra either show additional broadenning due to the coupling with quantized exciton levels (Ar, Ne) or the polariton level is pushed out of the exciton band and manifests itself as a narrow dip in the reflection spectra.

scholarly journals Electronic excitations induced by the impact of coinage metal ions and clusters on a rare gas matrix: Neutralization and luminescence

2007 ◽  
Vol 76 (10) ◽  
Author(s):  
Wolfgang Harbich ◽  
Christoph Sieber ◽  
Karl-Heinz Meiwes-Broer ◽  
Christian Félix
Keyword(s):  
Metal Ions ◽  
Rare Gas ◽  
Electronic Excitations ◽  
Coinage Metal ◽  
The Impact

Use of LaB6 for a High Quality, Small Energy Spread Beam in an Electron Velocity Spectrometer

1976 ◽  
Vol 34 ◽  
pp. 534-535 ◽  
Author(s):  
P. E. Batson ◽  
C. H. Chen ◽  
J. Silcox
Keyword(s):  
High Temperature ◽  
Energy Resolution ◽  
Electron Velocity ◽  
Electronic Excitations ◽  
Small Energy ◽  
Small Intensity ◽  
Good Energy ◽  
Spectrometer System ◽  
Electron Energy Loss ◽  
Very High

Electron energy loss experiments combined with microscopy have proven to be a valuable tool for the exploration of the structure of electronic excitations in materials. These types of excitations, however, are difficult to measure because of their small intensity. In a usual situation, the filament of the microscope is run at a very high temperature in order to present as much intensity as possible at the specimen. This results in a degradation of the ultimate energy resolution of the instrument due to thermal broadening of the electron beam.We report here observations and measurements on a new LaB filament in a microscope-velocity spectrometer system. We have found that, in general, we may retain a good energy resolution with intensities comparable to or greater than those available with the very high temperature tungsten filament. We have also explored the energy distribution of this filament.

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