Fluorescence Quantum Yield Determinations. 9,lO
... under the impression that by observing front-face, they have eliminated any problem with reabsorption.12 This is most definitely not the case, as Melhuish pointed out, stating that ca. 85% of the emission passes back into the solution where a part may be a b ~ 0 r b e d . l ~ The only additional maj ...
... under the impression that by observing front-face, they have eliminated any problem with reabsorption.12 This is most definitely not the case, as Melhuish pointed out, stating that ca. 85% of the emission passes back into the solution where a part may be a b ~ 0 r b e d . l ~ The only additional maj ...
A Quantitative Theory of Negative Adsorption of Nonelectrolytes
... and a is the dipole polarizability of the solute molecule in a vacuum. We note, however, that the electrostatic behavior of a solute molecule that is due to the presence of the phase boundary (liquid/vapor or liquidlair) cannot be accounted for merely by the polarizability of the solute. The solute ...
... and a is the dipole polarizability of the solute molecule in a vacuum. We note, however, that the electrostatic behavior of a solute molecule that is due to the presence of the phase boundary (liquid/vapor or liquidlair) cannot be accounted for merely by the polarizability of the solute. The solute ...
Specific rate constants k(E,J) for the dissociation of NO 2 . I. Time
... available for the dissociation process.2– 4,14,40,41 These findings, however, do not provide quantitative information about the rates of rotationally excited molecules in comparison to nonrotating molecules. At present, a large body of data is available for the photodissociation of jet-cooled 共almos ...
... available for the dissociation process.2– 4,14,40,41 These findings, however, do not provide quantitative information about the rates of rotationally excited molecules in comparison to nonrotating molecules. At present, a large body of data is available for the photodissociation of jet-cooled 共almos ...
Laser - nptel
... Ammonia Maser is such a device for generating electromagnetic waves. Ammonia molecule has two resonant states with a small energy difference eV. Geometrically, the two states may be picturised as follows. The three hydrogen atoms are at the vertices of an equilateral triangle which forms the base o ...
... Ammonia Maser is such a device for generating electromagnetic waves. Ammonia molecule has two resonant states with a small energy difference eV. Geometrically, the two states may be picturised as follows. The three hydrogen atoms are at the vertices of an equilateral triangle which forms the base o ...
... optical properties of quantum confined structures have been widely investigated [1-7]. Even since the advent of layered semiconductor structures, one of the main research interests has been the study of the optical properties of semiconductor quantum wells (QW). Not only have the optical properties ...
Europium(III) and terbium(III) trans-2
... Eu Eu? distance of 3.935(1) Å is slightly larger than the Tb Tb? distance of 3.911(1) Å, likely as a result of its position in the lanthanide series (ionic radii 0.95 Eu(III) vs. 0.92 Tb(III) Å). The structure is completed by two hydration water molecules, one of which appears depleted wi ...
... Eu Eu? distance of 3.935(1) Å is slightly larger than the Tb Tb? distance of 3.911(1) Å, likely as a result of its position in the lanthanide series (ionic radii 0.95 Eu(III) vs. 0.92 Tb(III) Å). The structure is completed by two hydration water molecules, one of which appears depleted wi ...
ionization 12.3.1
... It occurs when an atom or a molecule and their concomitant ions have energy states whereby the energy in two or more photons is absorbed. Negative ion chemical ionization See chemical ionization. Penning ionization Ionization occurs through the interaction of two or more neutral gaseous species, at ...
... It occurs when an atom or a molecule and their concomitant ions have energy states whereby the energy in two or more photons is absorbed. Negative ion chemical ionization See chemical ionization. Penning ionization Ionization occurs through the interaction of two or more neutral gaseous species, at ...
Quantum vs. Classical Magnetization Plateaus of S=1/2 Frustrated
... is quantized at fractional values of the saturation magnetization Ms in low dimensional magnetism.1–9) There are at least two types of plateau states that can occur for magnetization m = M/Ms = 1/3 in S = 1/2 chain models. One is the “classical state” of Fig. 1(a), which occurs as an adiabatic conti ...
... is quantized at fractional values of the saturation magnetization Ms in low dimensional magnetism.1–9) There are at least two types of plateau states that can occur for magnetization m = M/Ms = 1/3 in S = 1/2 chain models. One is the “classical state” of Fig. 1(a), which occurs as an adiabatic conti ...
Microsoft Office PowerPoint 2003 Beta - poster#2
... shell consists of the capillary wall, which is made from pure silica and has a refractive index close to 1.5. Finally, the outer surface of the capillary can be coated or immersed in another fluid. For this discussion, we consider an optically transparent capillary wall surrounded by air. ...
... shell consists of the capillary wall, which is made from pure silica and has a refractive index close to 1.5. Finally, the outer surface of the capillary can be coated or immersed in another fluid. For this discussion, we consider an optically transparent capillary wall surrounded by air. ...
Energy gap between highest occupied molecular orbital and lowest
... has been considered 关1–3兴. The main findings were the discovery of the fine structure with a specific shift of the electronic levels upward due to spheroidal deformation and the Zeeman splitting of electronic levels due to a weak uniform magnetic field. In addition, it was shown that the external ma ...
... has been considered 关1–3兴. The main findings were the discovery of the fine structure with a specific shift of the electronic levels upward due to spheroidal deformation and the Zeeman splitting of electronic levels due to a weak uniform magnetic field. In addition, it was shown that the external ma ...
Quantum Chemistry - Eric R. Bittner
... in quantum mechanics is to develop a series of well posed approximation and physical assumptions to solve basic equations of quantum mechanics. In this course, we will delve deeply into the underlying physical and mathematical theory. We will learn how to solve some elementary problems and apply the ...
... in quantum mechanics is to develop a series of well posed approximation and physical assumptions to solve basic equations of quantum mechanics. In this course, we will delve deeply into the underlying physical and mathematical theory. We will learn how to solve some elementary problems and apply the ...
Two-electron effects pervading the formation of highly excited
... part of the first pathway of H∗ formation for 1.5 ×1014 Watts/cm2 is the one that resembles the most nonsequential double ionization (NSDI)—for H∗ double ionization is frustrated and the first electron remains captured. Indeed, comparing Fig. 2 a) with Fig. 2 c) we find that the probability distribu ...
... part of the first pathway of H∗ formation for 1.5 ×1014 Watts/cm2 is the one that resembles the most nonsequential double ionization (NSDI)—for H∗ double ionization is frustrated and the first electron remains captured. Indeed, comparing Fig. 2 a) with Fig. 2 c) we find that the probability distribu ...
Chemical Properties of Alkenes and Alkynes from - (BORA)
... cases, results from the spectral analyses often are neither credible nor reproducible. One way to avoid this situation, is to calculate shifts in carbon 1s ionization energy with high accuracy and use them as constraints in the spectral analysis. In this thesis, shifts have been calculated using a n ...
... cases, results from the spectral analyses often are neither credible nor reproducible. One way to avoid this situation, is to calculate shifts in carbon 1s ionization energy with high accuracy and use them as constraints in the spectral analysis. In this thesis, shifts have been calculated using a n ...
1 CHAPTER 7 ATOMIC SPECTRA 7.1 Introduction Atomic
... where σ0 is in µm-1. This corresponds closely to that of dry air at a pressure of 760 mm Hg and temperature 15o C containing 0.03% by volume of carbon dioxide. To calculate λ given σ0 is straightforward. To calculate σ0 given λ requires iteration. Thus the reader, as an exercise, should try to calcu ...
... where σ0 is in µm-1. This corresponds closely to that of dry air at a pressure of 760 mm Hg and temperature 15o C containing 0.03% by volume of carbon dioxide. To calculate λ given σ0 is straightforward. To calculate σ0 given λ requires iteration. Thus the reader, as an exercise, should try to calcu ...
Hartree-Fock - Materials Physics Center
... RHF: the spatial part of the one-electron spinorbitals ji(ri,si) is identical for spin-up and spindown (closed-shell) UHF: the spatial part of the one-electron spinorbitals ji(ri,si) depend on the spin-orientation. Here, the wavefunction may be not a proper spin eigenfunction (spin contamination). T ...
... RHF: the spatial part of the one-electron spinorbitals ji(ri,si) is identical for spin-up and spindown (closed-shell) UHF: the spatial part of the one-electron spinorbitals ji(ri,si) depend on the spin-orientation. Here, the wavefunction may be not a proper spin eigenfunction (spin contamination). T ...
223
... of the C-C bonds of the polymethine chain29,30 (see eq 2) in analogy with the isoelectronic retinal PSBs (see eq 1). Indeed, the involvement of trans-cis isomerization in the S1 f S0 deactivation process is consistent with the dramatic fluorescence enhancement obtained by dissolving the dye in visco ...
... of the C-C bonds of the polymethine chain29,30 (see eq 2) in analogy with the isoelectronic retinal PSBs (see eq 1). Indeed, the involvement of trans-cis isomerization in the S1 f S0 deactivation process is consistent with the dramatic fluorescence enhancement obtained by dissolving the dye in visco ...
Franck–Condon principle
The Franck–Condon principle is a rule in spectroscopy and quantum chemistry that explains the intensity of vibronic transitions. Vibronic transitions are the simultaneous changes in electronic and vibrational energy levels of a molecule due to the absorption or emission of a photon of the appropriate energy. The principle states that during an electronic transition, a change from one vibrational energy level to another will be more likely to happen if the two vibrational wave functions overlap more significantly.