Results 271 to 280 of about 514,461 (292)

Empirical determination of intermediate-coupling amplitudes and transition rates from spectroscopic data

Physical Review A, 1991
A simple general method is presented whereby measured spectroscopic energy-level data can be used to empirically construct the eigenvectors of intermediate coupling for an arbitrary configuration. These empirical eigenvectors can be used to elucidate the transition rates into, out of, and among the levels of the configuration by separating the effects ...
, Curtis, , Rudzikas, , Ellis
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Spectroscopic exhibitions of large-amplitude motions in halogen-containing coordination systems

SPIE Proceedings, 2000
The spectroscopic exhibitions of the structural non-rigidity effects in the series of the complex molecular systems with a few large amplitude motions are investigated with the application of the combination of original experimental and theoretical approaches which were tested by us earlier for the study of the floppy molecules.
Shavkat S. Nabiev, I. A. Perevalova, A. N. Pinzul, L. P. Sukhanov   +3 more
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One-nucleon spectroscopic amplitudes for excited states of 1p-shell nuclei

Journal of Physics G: Nuclear Physics, 1987
Spectroscopic amplitudes are calculated for one-nucleon transfers between low-lying, normal parity states of 1p-shell nuclei. Calculations are performed with the intermediate-coupling model wavefunctions generated using the interaction parameters of Cohen and Kurath (1970).
E Kwasniewicz, J Kisiel
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Alpha -particle spectroscopic amplitudes for excited states of 1p-shell nuclei

Journal of Physics G: Nuclear Physics, 1986
Alpha -particle spectroscopic amplitudes were calculated for the excited normal parity states of 1p-shell nuclei. The wavefunctions of the nuclear states were approximated by the intermediate-coupling model wavefunctions. These spectroscopic amplitudes are required for studying the multistep direct sequential transfer processes.
E Kwasniewicz, L Jarczyk
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Analysis of the α-spectroscopic amplitudes of¹⁶O

Journal of Physics G: Nuclear Physics, 1978
The alpha -spectroscopic amplitudes of 16O are analysed in detail using the recent calculation of Apagyi and Fai (1976) based on the shell-model results of Zuker et al (1968). The importance of the knowledge of the precise magnitude and phase of the amplitudes is emphasised.
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An approximate method for calculating mean amplitudes of vibration from spectroscopic data—II

Spectrochimica Acta, 1959
Abstract A refinement of Morino's approximate formula for mean square amplitudes due to harmonic vibrations in polyatomic molecules is given. Approximate formulae with four terms, based upon a four-constant approximation for the hyperbolic cotangent, are evaluated. The method may be applied for ranges of vibrational frequencies up to about 3000 cm −1
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Determination of two-nucleon spectroscopic amplitudes from (d,α) analyzing powers

Physical Review C, 1985
Tensor and vector analyzing powers and cross sections have been measured for low-lying levels populated by the sup89Y(d,..cap alpha..) sup87Sr reaction at 9.0, 12.0, and 16.0 MeV. Angular distributions of dsigma/d..cap omega.., Asuby, Asubyy, Asubxx, and Asubxz have been analyzed using full finite-range distorted-wave Born approximation calculations ...
, Santos, , Karp, , Bowsher, , Ludwig, , Eiró   +4 more
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Spectroscopic Method for Measuring Plasma Magnetic Fields Having Arbitrary Distributions of Direction and Amplitude

Physical Review Letters, 2007
An approach for measurements of magnetic fields, based on the comparison of the magnetic-field-induced contributions to the line shapes of different fine-structure components of an atomic multiplet, is proposed and experimentally demonstrated. Contrary to the methods based on detecting an anisotropy in either the emitted radiation or in the dispersion ...
E, Stambulchik, K, Tsigutkin, Y, Maron
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Spectroscopic Amplitudes for Two-Cluster Transfer Between 1p-Shell Nuclei

Journal of Physics G: Nuclear and Particle Physics, 1991
Spectroscopic amplitudes for separation of two clusters from 1p-shell nuclei were calculated. The calculations were performed with the aid of intermediate-coupling shell model wavefunctions. The population of final states produced by simultaneous transfer of two clusters from 1p-shell nuclei was discussed.
E Kwasniewicz, M Wojaczek
exaly   +2 more sources

Large amplitude motions in coumaran: a spectroscopic and theoretical study

2004
$^{a}$E. Bondoc, T. Klots, J. Laane, J. Phys. Chem A 104, 275 (2000) ; Author Institution: Dipartimento di Chimica ``G. Ciamician'', Universit\`{a} di Bologna ; The structure of coumaran (2,3-dihydrobenzofuran) is characterized by a non-planar skeleton, due to the position of the most far apart carbon in the dihydrofuran ring. We have measured 133 a, b
OTTAVIANI, PAOLO, CAMINATI, WALTHER
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