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71.
D. M. Hope D. E. McClelland H.-A. Bachor A. J. Stevenson 《Applied physics. B, Lasers and optics》1992,55(3):210-215
This paper describes experiments with a coupled atom-cavity system generating quadrature squeezed states of light. A wide range of parameters was explored and a regime was found where a beam of laser light with significant power (0.17 mW) and good noise suppression (measured 18±3%, inferred 50±10%) was observed. An analysis of the exact phase of the noise suppression shows it to be a minimum uncertainty state with reduced noise in a combined amplitude/phase quadrature. The observations are in good qualitative agreement with a full quantum theory of squeezing in optical bistability. 相似文献
72.
D. J. Horen J. Lisantti R. L. Auble F. E. Bertrand B. L. Burks E. E. Gross R. O. Sayer D. K. McDaniels K. W. Jones J. B. McClelland S. J. Seestrom-Morris L. W. Swenson 《Zeitschrift für Physik A Hadrons and Nuclei》1989,333(1):39-43
Spin-dipole strength in40Ca has been studied by inelastic scattering of 500-MeV protons and the dipole response in40Ca is compared with the spin-dipole data from the40Ca(p, n) reaction and nonspin-dipole data from photonuclear studies. 相似文献
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Linda J. Santry Raymond A. Poirier Robert A. McClelland Imre G. Csizmadia 《Theoretical chemistry accounts》1984,65(2):139-149
Ab initio calculations were performed on 2-hydroxy-1,3-oxathiolane: and the two products of its breakdown: Complete geometry optimizations were performed at minimal (STO-3G) and split-valence (3-21G) basis set levels. In addition, a single point calculation was performed at 6-31G* level withd orbitals added on sulfur only. The conformation of the oxathiolane intermediate and its stability relative to the breakdown products was investigated. The STO-3G basis set gave an envelope form while 3-21G gave the twist form of the five-membered ring as the most stable. For all three basis sets the ester product was more stable than thioester. 相似文献
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79.
Arunachalam Lakshmi Stanley Walker Bernard J. McClelland James H. Calderwood 《Journal of Molecular Structure》1982
The potential function for internal rotation of the aldehyde group in the orthometa- and para-fluorobenzaldehydes is calculated by CNDO/2, INDO and STO/6G methods, assuming invariant bond lengths. The INDO and STO/6G calculations indicate the equilibrium geometry to be essentially planar and the barrier to internal rotation to be the potential energy of the molecule when the plane of the aldehyde group is perpendicular to the ring plane; CNDO/2 leads to different conclusions, however. Relative stabilities of O-cis and O-trans rotamers of the planar configuration are discussed. Comparisons are made with the V barriers and the enthalpies of activation as determined by the dielectric absorption method using a matrix technique. 相似文献
80.
An ultraviolet absorption technique is developed for studying molecules cooled in a supersonic expansion. In this experiment, the temperature-dependent contribution to the diffuseness of electronically excited states is reduced for CS2 and butadiene. The broadness of the spectral features of the butadiene 1B1u state is independent of temperature 相似文献