Glass, Volume 1Minoru Tomozawa, R. H. Doremus |
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Page 12
... less than the energy gap E ,. It is difficult to produce excitons in sufficient concentration to observe directly transitions among exciton levels but it is quite common to observe transitions from the valence band edge to exciton ...
... less than the energy gap E ,. It is difficult to produce excitons in sufficient concentration to observe directly transitions among exciton levels but it is quite common to observe transitions from the valence band edge to exciton ...
Page 30
... less than 33 号 mole % alkali ; ( a ) the boroxol group , ( b ) the pentaborate group , ( c ) the triborate group , and ( d ) the diborate group . ( After Krogh - Moe , 1965. ) this intepretation is not supported by NMR , Raman , and ir ...
... less than 33 号 mole % alkali ; ( a ) the boroxol group , ( b ) the pentaborate group , ( c ) the triborate group , and ( d ) the diborate group . ( After Krogh - Moe , 1965. ) this intepretation is not supported by NMR , Raman , and ir ...
Page 105
... less dense than the surrounding glass . They propose that the droplet is silver halide ( more dense ) accompanied by a boronrich material ( less dense ) . Carrier ( unpublished results ) has seen similar structures in virtually all the ...
... less dense than the surrounding glass . They propose that the droplet is silver halide ( more dense ) accompanied by a boronrich material ( less dense ) . Carrier ( unpublished results ) has seen similar structures in virtually all the ...
Contents
Text | 8 |
Ultraviolet Absorption | 10 |
Methods of Measuring Surface Texture | 30 |
Copyright | |
49 other sections not shown
Common terms and phrases
absorption band alkali anisotropic annealing Araujo atoms binary birefringence bleaching bond borate glasses boron borosilicate glass Bray Brillouin Brillouin scattering calculations Ceram chalcogenide glasses Chem coefficient colloid color composition concentration fluctuations coordination copper crystal crystalline darkening density fluctuations dielectric constant dielectric relaxation diffusion distribution effect electron energy equilibrium experimental fade rate Fe3+ frequency frozen-in strain function GeO2 glasses containing Griscom heat treatment increase indicated intensity irradiated Landau-Placzek ratio light scattering measured microstructural birefringence mole Mössbauer Na₂O negative birefringence observed octahedral octahedral symmetry optical oxide glasses oxygen paramagnetic particles phase separation phonons phosphate glasses photochromic photochromic glasses Phys polarization positive birefringence Raman Rayleigh relaxation resonance sample Schroeder shift shown in Fig silicate glasses silver halide SiO2 sodium Solids spectra spectrum spin-lattice relaxation spinodal stretching structural studied Takamori Taylor temperature thermal tion Tomozawa transition trapped ultraviolet unpublished results vibrational viscosity wavelengths