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... communities 共for leading references see Ref. 1兲 and is an important test for unimolecular reaction dynamics.2 The absorption and emission spectra of singlet glyoxal are well understood3–7 and the photophysics of the first excited state, S 1 , has been studied extensively.8–11 Intersystem crossing to ...
... communities 共for leading references see Ref. 1兲 and is an important test for unimolecular reaction dynamics.2 The absorption and emission spectra of singlet glyoxal are well understood3–7 and the photophysics of the first excited state, S 1 , has been studied extensively.8–11 Intersystem crossing to ...
Phys. Rev. Lett. 108, 197403
... between the major quadrupolar axis of the ith nucleus and the z-axis. For the coupling strength of the electron to the ith nucleus we assumed Ai ¼ A=N, where A is the hyperfine coupling constant and N the number of nuclei. To determine BiQ and i , we first employed molecular statics with Tersoff ty ...
... between the major quadrupolar axis of the ith nucleus and the z-axis. For the coupling strength of the electron to the ith nucleus we assumed Ai ¼ A=N, where A is the hyperfine coupling constant and N the number of nuclei. To determine BiQ and i , we first employed molecular statics with Tersoff ty ...
Analytical technique: Fluorescence Spectroscopy
... powders, films and solutions of materials and is ideal for the measurement of the emission and excitation spectra of materials which may provide indications of the presence (qualitative) of fluorophores or chromophores. When applied to solid samples, the technique is totally non destructive. The ana ...
... powders, films and solutions of materials and is ideal for the measurement of the emission and excitation spectra of materials which may provide indications of the presence (qualitative) of fluorophores or chromophores. When applied to solid samples, the technique is totally non destructive. The ana ...
The Quantum Magnetism of Individual Manganese-12
... inelastic spin-flip spectroscopy at low temperature T = 1.5 K (fig. 3). We measure the differential conductance dI/dV on top of the Mn12 molecules and observe symmetric features around the Fermi energy only when the molecule is adsorbed on the thin BN insulator. Spectra in zero and at applied magnet ...
... inelastic spin-flip spectroscopy at low temperature T = 1.5 K (fig. 3). We measure the differential conductance dI/dV on top of the Mn12 molecules and observe symmetric features around the Fermi energy only when the molecule is adsorbed on the thin BN insulator. Spectra in zero and at applied magnet ...
Packing and Molecular Orientation of Alkanethiol Monolayers on
... Packing and Orientation of Alkanethiol Monolayers At lattice spacings less than about 4.8 A, however, it is not possible for the "racheting effect" to establish this special interlocking. Figure 7 shows how the best interaction energy (at the best tilt for this spacing) varies as a function of the ...
... Packing and Orientation of Alkanethiol Monolayers At lattice spacings less than about 4.8 A, however, it is not possible for the "racheting effect" to establish this special interlocking. Figure 7 shows how the best interaction energy (at the best tilt for this spacing) varies as a function of the ...
Optical and Magnetic Properties of Copper(II) compounds.
... restrictions defining the pairs of energy levels between which such transitions can occur are called electron dipole selection rules.29 These rules, which can be explained in terms of symmetry of the wave-functions, are true only in the first approximation. The forbidden transitions are often observed ...
... restrictions defining the pairs of energy levels between which such transitions can occur are called electron dipole selection rules.29 These rules, which can be explained in terms of symmetry of the wave-functions, are true only in the first approximation. The forbidden transitions are often observed ...
Collisional dynamics of ultracold OH molecules in an electrostatic field
... However, long-range dipole-dipole forces strongly dominate the scattering of OH molecules in their weak-field-seeking states. In this paper we will show that this arises from strong avoided crossings in the long-range adiabatic potential curves, which prevent the molecules from approaching close eno ...
... However, long-range dipole-dipole forces strongly dominate the scattering of OH molecules in their weak-field-seeking states. In this paper we will show that this arises from strong avoided crossings in the long-range adiabatic potential curves, which prevent the molecules from approaching close eno ...
Lecture Slides - School of Chemical Sciences
... Why Thermodynamics? The macroscopic description of a system of ~1023 particles may involve only a few variables! “Simple systems”: Macroscopically homogeneous, isotropic, uncharged, large enough that surface effects can be neglected, not acted upon by electric, magnetic, or gravitational fields. ...
... Why Thermodynamics? The macroscopic description of a system of ~1023 particles may involve only a few variables! “Simple systems”: Macroscopically homogeneous, isotropic, uncharged, large enough that surface effects can be neglected, not acted upon by electric, magnetic, or gravitational fields. ...
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.