self-trapped
The self-trapped hole in caesium halides
... The equilibrium lattice configuration, electronic excitation energies and activation energies for hopping motion are calculated for a self-trapped hole in simple cubic CsC1, CsBr and [r] ...
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Luminescence and electronic structure of the self-trapped exciton in alkali fluorides and chlorides
... We have studied the electronic structure of the self-trapped excitons in alkali- halides by calculating the states of the electron bound to the Vk-centre. A series of bound states of different symmetries ...
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THEORY OF THE STRUCTURE OF THE SELF-TRAPPED EXCITON IN QUARTZ
... In view of the differing answers obtained using two semi-empirical parametrisations, we now describe ab initio calculations a t the Hartree-Fock level, carried out in cluster[r] ...
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SELF TRAPPED HOLE IN ALKALINE-EARTH FLUORIDES .2. HOPPING MOTION
... We prefer 180", since the activation energy increases with jump distance in the simplest theories (eg Flynn 1971); with our choice the jump distance also increases monotonic- [r] ...
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INITIAL PRODUCTION OF DEFECTS IN ALKALI-HALIDES - F AND H CENTER PRODUCTION BY NON-RADIATIVE DECAY OF SELF-TRAPPED EXCITON
... The barrier to further separation of the F-H pair just mentioned can be overcome if the H centre is formed in an excited state (Itoh and Saidoh 1973). This F-H state may still have a [r] ...
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SELF TRAPPED HOLE IN ALKALINE-EARTH FLUORIDES .1. STATIC PROPERTIES
... Following Mott and Littleton (1938), ions in an inner region are relaxed explicitly until they experienced no resulting force, while ions in the remainder of the lattice are displac[r] ...
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ELECTRONIC-STRUCTURE OF SELF-TRAPPED EXCITON IN ALKALI FLUORIDES AND CHLORIDES
... For simplicity, in defining the exciton states formed from the hole in its lowest state and the electron in an orbital of symmetry r, we shall write *I' for the triplet exciton a[r] ...
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ELECTRONIC-STRUCTURE OF SELF-TRAPPED EXCITON IN SODIUM-CHLORIDE
... denotes the orbitals which are occupied in the state in question, but unoccupied in the singlet ground state, and Y denotes the orbitals occupied in the singlet ground stat[r] ...
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ELECTRONIC-STRUCTURE OF V- CENTER IN MGO
... Our calculations show (i) that the hole should be self-trapped on a single oxygen, as observed, (ii) that our predictions of ground-state ionization energy and of elastic [r] ...
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The lifetime of electrons, holes and excitons before self-trapping
... Evidence of delay in the formation of self-trapped carriers can come either from the mobility of injected holes in, say, films of solid argon, or from the behaviour of exci[r] ...
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ELECTRONIC STRUCTURE AND LUMINESCENCE OF CSI:NA
... The results suggest that the main observed emission in CsI: Na at 2.95 eV involves the recombination of a self-trapped exciton immediately adjacent to the substitutional N a impurity[r] ...
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One dimensional models for crystal photochemistry
... For the present investi- gation, an exciton will be deemed to be self-trapped when the dispersive exciton-phonon coupling interaction leads to a reduction in the resonance transfer rate,[r] ...
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The "keyhole": a sign of herniation of a trapped fourth ventricle and other posterior fossa cysts
... We observed four children with trapped fourth ventricles confirmed by CT ventriculography in whom the trapped fourth ventricle had assumed a distinctive "keyhole" configuration on sonogr[r] ...
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T. indica species and 0.01 for N. indica species. High prevalence of rodent trapped showed in May and low in
... Samples’ trapping was from January to December 2016. The Rodents were trapped by 10 Sherman live trap- nights (7.5x9x22 cm) using bread covered by animal fat mixed with onion sore. The traps were distributing near ...
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On some stabilisation techniques of a trapped vortex
... the trapped vorted was stabilised then switch it back on at a later ...the self rotational be- haviour of the trapped vortex enables it to remain sta- ble for some time before its stability is ...
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Defect structures in zeolite crystals
... EFFECTIVE MEDIUM APPROXIMATION: One of the difficulties of the embedding schemes lies with the necessity of finding a solution in the outer region. A consistent approach would require applying the method used for the ...
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Photoluminescence (PL) and Thermoluminescence (TL) studies of y irradiated CaAl2O4: Eu2+ phosphor synthesized by combustion technique
... centers which can be observed are the V centers (a hole trapped at a cation vacancy) and F centers (an electron trapped at an anion vacancy).When the sample is irradiated with gamma radiation most of the ...
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On the applicability of trapped vortices to ground vehicles
... with trapped vortex flows. Since trapped vortices reduce vortex shedding and unsteadiness, this presents opportunities for researching the aero acoustics of high lift aerofoils with vortex trapping ...the ...
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FLASH memories are the most important of nowadays nonvolatile
... and trapped at the SiO /Si N interface ( in ...and trapped at the “bottom” SiO /Si N interface, while no hole (electron) is injected from the bottom ...
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Can the Undead Speak?: Language Death as a Matter of (Not) Knowing
... progammatical languages, codes, logics, and mathematical functions designate their immediate necessities (x=2+2=4) but always exceed these and signify something just a little bit more (‘if Xavier has two apples and two ...
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