Showing papers in "Chemical Physics Letters in 1974"

TL;DR: In this article, Ramaman spectroscopy has been employed for the first time to study the role of adsorption at electrodes, and it has been possible to distinguish two types of pyridine adaption at a silver electrode.

TL;DR: In this paper, the free energy of a Lennard-Jones fluid in the liquid-vapour coexistence region was estimated by relating it to that of the inverse-twelve (soft sphere) fluid, which itself shows no condensation.

TL;DR: The Fourier transform ion cyclotron resonance (FT-ICR) 1.5 mass spectrometer as discussed by the authors was developed for mass spectroscopy and it can be used to obtain the whole spectrum in a very short period of time.

TL;DR: In this paper, the authors demonstrated that frequency-sweep excitation can provide the broad-band irradiation required to excite ion cyclotron resonances throughout any desired mass range.

TL;DR: In this paper, the scattering of light by a sphere with intrinsic optical activity was calculated exactly from electromagnetic theory using the constitutive equations appropriate for an optically active, isotropic medium.

TL;DR: The first time dependent study of the role of the cage effect in the geminate recombination of iodine atoms produced by photodissociation of I 2 is reported.

TL;DR: In this article, the ΔJ = 0,l-doublet transitions of OCS isotopes (16O12C32S, 16O 12C33S and 16O12c34S) in the (0110) vibrational state have been measured in a molecular-beam electric-resonance spectrometer equipped with a nozzle source.

TL;DR: The line profile of the narrow, symmetric 1s line from neon, recorded with the new ESCA instrument with X-ray monochromatization, is analyzed in this paper.

TL;DR: In this article, the potential energy curves for the ground state X 1 ∑ + g and for the b 3 ∑+ u state of the hydrogen molecule have been calculated for intermuclear distances 6 ⩽ R ⌽ 12 au.

TL;DR: In this article, the authors explain the apparent disagreement of results of fluorescence quenching with Marcus' theory for outer-sphere electron transfer in polar media by including vibrational transitions.

TL;DR: In this article, the average discrepancy between theoretical and experimental excitation energies is 0.1 eV and 1.38 eV, respectively, for the nsa1 Rydberg series.

TL;DR: In this paper, the quenching of excited inert gas atoms by N 2 O, O 3, Cl 2 and CCl 4 was observed from the bound upper states of ArO, KrO and ArCl.

TL;DR: In this paper, effective potentials to replace the Ar core electrons of Fe and Ni were obtained from ab initio ground state wavefunctions of the two core electrons and tested by comparing with SCF calculations for excited states of Fe, Fe +, Fe 2+, Fe 3+, Ni, Ni +, Ni 2+ and Ni 2 +, and the FeH + molecule.

TL;DR: In this article, the excitation energies, oscillator strengths and geometry of upper states in the low-energy electronic transitions of water have been investigated and good agreement with experimental data where available, both with regard to the location and intensity of the various spectral bands for this system, and several transitions of either weakly allowed or forbidden character respectively are predicted.

TL;DR: In this paper, it was shown that the fluctuation in the electron population of a region of real space (or loge) provides a measure of the extent of the correlative interactions between the motions of the electrons in that space.

TL;DR: In this article, the correlation between paramagnetism and the shake-up satellites in the X-ray photoelectron spectra of the 3D transition-metal compounds is examined and explained in terms of modified selection rules governing the shakeup transitions.

TL;DR: In this paper, the decay of trapped electrons by tunnelling to scavenger molecules is investigated theoretically and an exact expression has been derived which gives an exponential decrease of the trapped electron yield with the scavenger concentration at any given time.

TL;DR: In this article, the authors demonstrate transient absorption spectroscopy with picosecond time resolution and nanometer spectral resolution over the entire visible region using 3,3′-diethyloxadicarbocyanine iodide.

TL;DR: In this paper, the fundamental and defect properties of a diacetylene polymer have been established by spectroscopic observations of samples ranging from large single crystals to amorphous powders.

TL;DR: In this article, the coulombic correlation of induced electric dipoles in the ligands by the transition quadrupole moment of the metal ion was found to give a nonzero resultant electric dipole transition moment in complexes devoid of inversion symmetry or S p axes for p > 5.

TL;DR: In this paper, the vibrational relaxation of n -H 2 has been studied in the interval 500 −40°K and the results show a marked departure from the high temperature Landau-Teller behaviour: the deexcitation rate becomes approximately constant for the lowest investigated temperatures.

TL;DR: In this paper, the Hartree-Fock model was used for the series CH4 to PbH4 within the spherically symmetric one-centre expansion approximation.

TL;DR: In this paper, the 2p 1 2 -2p 3 2 separation with spin state of the Co ion can complicate the direct interpretation of 2p chemical shifts in terms of changes in charge distribution or oxidation state.

TL;DR: In this paper, rotational lines were resolved in the two-photon excitation spectrum of the α(0,0) band of nitric oxide at pressures as low as 50 mtorr.

TL;DR: In this paper, the electron distribution curve of the blue film exhibits a small band near the Fermi edge which is absent in the transparent sample, attributed to electrons trapped in positively charged anion vacancies in the substoichiometric MoO3 lattice.

TL;DR: In this paper, the build-up of triplet-triplet absorption at 5300 A was measured during and subsequent to the excitation of benzophenone by 5 psec pulses of 3545 A radiation (frequency tripled Nd 3+ : glass fundamental).

TL;DR: In this paper, a non-empirical method is developed to determine atomic pseudopotentials; their parameters are calculated by means of a least-squares process, and the efficiency of such a method appears clearly in the calculation of the valence molecular orbitals of the silane molecule.

TL;DR: In this paper, the build-up of triplet-triplet absorption following singlet excitation was measured for 1- and 2-nitronaphthalene and benzophenone on a picosecond time scale in the condensed phase.

TL;DR: In this paper, a method of analysing the results of some recent investigations of lateral diffusion of lipids in biological membranes is presented, and expressions for the rate of a diffusion-controlled reaction in a two-dimensional fluid are derived.

TL;DR: In this paper, the phase relaxation of the normal vibrational mode was investigated using single picosecond pulses, and a dephasing time of 75 ± 8 psec was measured in good agreement with spontaneous linewidth data.