Excited state
Excited state dynamics of the Ho3+ ions in holmium singly doped and holmium, praseodymium-codoped fluoride glasses
... LiYF 4 共YLF兲 crystal 6 operating on the 5 I 6 → 5 I 7 transition has the potential for pulsed laser operation despite the longer ⬃16 ms lifetime of the lower laser 共 5 I 7 兲 level when com- pared to the lifetime of the ...
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Pump-probe technique for excited state absorption and stimulated emission measurements in rare earth ion doped solid materials.
... FOR EXCITED STATE ABSORPTION AND STIMULATED EMISSION MEASUREMENTS IN RARE EARTH ION DOPED SOLID ...solid state materials are the most important active media of near-infrared and visible lasers and ...
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The reactivity of the triplet excited state of 1,4-diaza-9-fluorenones towards hydrogen and electron donors.
... Estudos por fotólise por pulso de laser indicaram que a excita- ção de 1,4-diaza-9-luorenona ( 1 ) e 1,4-diaza-9-benz[ b ]luorenona ( 2 ), em acetonitrila, leva à formação dos estados e[r] ...
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Triplet excited state reactivity of 1,3-indandione in benzene solution.
... triplet state of 1,3-indandione. The nπ* character of this triplet state was evidenced by the quenching rate constants obtained when typical hydrogen donors were employed as ...
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Braz. J. Phys. vol.33 número4
... the CDW and SDW states are similar, new vibronic states are formed with components from both CDW and SDW di- abatic states. In this limit the electron pairs are delocalised. The free motion of electron pairs is without ...
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Braz. J. Phys. vol.29 número4
... The aim of this work is to improve the study of a phonon laser (saser) proposed by us several years ago[1]. This is a device capable to generate an intense coherent beam of acoustical phonons. Our acoustic laser consists ...
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Excited singlet molecular O-2 ((1)Delta g) is generated enzymatically from excited carbonyls in the dark
... Carbonyls in the triplet excited state are known to undergo unim- olecular reactions (e.g., isomerization, a- and b-cleavage) and bimo- lecular processes (e.g., hydrogen abstraction, (212) cycloadditions), ...
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J. Braz. Chem. Soc. vol.28 número9
... ground state. This conformer will undergo ESIPT in the excited state to produce a keto tautomer (T*), which induces the decay in fluorescence emission to a ground state keto tautomer ...ground ...
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Production and decay of Sulphur excited species in a ECRIS plasma
... In this work we have shown evidence of the contribu- tion of several new mechanism that contribute to the cre- ation of excited state in an ECRIS plasma. In particular double and triple processes must be ...
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Braz. J. Phys. vol.35 número4A
... an excited electron from the inner ...lence excited state [1] is repulsive for a specified σ bond; then, the core-to-σ* excited state is lower than the continuum and Rydberg region at ...
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Isotope effects in N<sub>2</sub>O photolysis from first principles
... ground state Potential Energy Surface (PES) to obtain anhar- monic vibrational wavefunctions which could be considered nearly exact together with an ab initio excited state PES and a Transition ...
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J. Braz. Chem. Soc. vol.19 número2
... atomic excited state in the absence of energy transfer processes) and the lifetime when intramolecular energy transfer is operative, simply referred to as excited state lifetime, which is the ...
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Blue cooperative luminescence in Yb3+-doped tellurite glasses excited at 1.064 mu m
... solid- state materials for a wide range of applications including color displays, optical data storage, biomedical diagnostics, sensors, and undersea optical ...the excited-state levels with the ...
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J. Braz. Chem. Soc. vol.21 número6
... the triplet excited state of TX produces an intermediate exciplex, through the involvement of an initial excited charge transfer complex. The exciplex decay leads to the formation of an ion-radical ...
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J. Braz. Chem. Soc. vol.20 número1
... displayed a spectrum similar to that of photoluminescence, showing that the exciton recombination produces an isolated fluorenyl group in the excited state which emits in the blue- range of the visible ...
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J. Braz. Chem. Soc. vol.26 número11
... modiication in the electronic distribution of the complex because of the presence of methyl groups at the 3 and 8 positions of 1,10-phenanthroline. These changes also modiied the excited state properties ...
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Enhanced differential evolution algorithm for solving reactive power problem
... Here we propose a new-fangled EDE algorithm by combining basic DE with EACS. Excited arbitrary confined search is applied in each generation after completing the mutation, crossover and selection operators. The ...
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J. Braz. Chem. Soc. vol.28 número12
... particular, excited triplet states of some heteroaromatic ligands are almost resonant with that for indomethacinate (indo) ligand, consequently, these states may contribute to an operative interligand energy ...
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Braz. J. Phys. vol.35 número2B
... quantum state, only the total system consisting of ob- ject plus environment is in a well-defined ...the state of the total system over the un- observed degrees of freedom, thereby getting a mixed ...
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Braz. J. Phys. vol.28 número4
... In Fig. 2 we compare our results ( F ( z )) with the experimental data. As it can be seen the agreement is very good and it was obtained with essentially only one new (but heavily constrained) parameter equal to the ...
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