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We study the one-dimensional Schrodinger equation for the Hamiltonian involving the bipartite hard-core potential, H = ([P.sup.2.sub.1]/[2m.sub.1]) + ([P.sup.2.sub.2]/[2m.sub.2]) - [V.sub.0][delta]([X.sub.1] - [X.sub.2]). We select the suitable unitary transformation and employ the entangled state representation |[eta]>, [eta] = [[eta].sub.1] i[[eta].sub.2], to find the quantization condition for energy [mathematical expression not reproducible] which seems new.Key words: bipartite hard-core potential, quantization condition for energy, entangled state representation, one- dimensional Schrodinger equation, unitary transformation.Nous etudions l'equation de Schrodinger en une dimension pour le Hamiltonien a coeur dur biparti H = ([P.sup.2.sub.1]/[2m.sub.1]) + ([P.sup.2.sub.2]/[2m.sub.2]) - [V.sub.0][delta]([X.sub.1] - [X.sub.2]). Nous selectionnons la transformation unitaire appropriee et utilisons la representation d'etat intrique |[eta]>, [eta] = [[eta].sub.1] i[[eta].sub.2], pour trouver la condition de quantification de l'energie E, [mathematical expression not reproducible][Traduit par la Redaction]Mots-cles : potentiel a coeur dur biparti, condition de quantification pour l'energie, representation d'etat intrique, equation de Schrodinger en une dimension, transformation unitaire., 1. IntroductionSolving Schrodinger equations [1-5] for different potentials usually is a challenge to theoretical physicists, because most of them cannot be solved with analytical solutions. In this work we try [...]

In this paper, we construct and investigate the nonclassical properties of the squeezing and rotating coherent state (SRCS) via a generalized squeezed operator by introducing a novel parameter r. In a particular case r =0, SRCS reduces to the normal squeezed coherent state (SCS). The influence of r is studied in terms of squeezing and quantum statistical properties. Our results show that in the SCS not only is squeezing enhanced but also is rotated by the parameter r. Our discussion about the fidelity between SRCS and SCS shows that the fidelity values decrease with increasing parameter r. The experimental scheme for producing SRCS is also given via a self-Kerr medium and non-degenerate parametric amplifier.Key words: squeezed operator, squeezing properties, amplitude-squared squeezing, quantum statistical properties, fidelity.Nous construisons ici un etat coherent en compression et en rotation (ECCR) via un operateur de compression generalise en introduisant un nouveau parametre r et nous examinons ses proprietes non classiques. Dans un cas particulier ou r =0, ECCR se reduit a un etat coherent comprime normal (ECC). Nous etudions l'influence de r en termes de compression et de statistiques quantiques. Nos resultats montrent que ECC voit non seulement sa compression augmentee, mais egalement sa rotation avec le parametre r. Notre discussion sur la fidelite entre ECCR et ECC montre que la valeur de fidelite diminue avec l'augmentation du parametre r. Nous proposons aussi un schema experimental pour la production de ECCR via un milieu auto/optique-Kerr et un amplificateur parametrique non degenere. [Traduit par la Redaction]Mots-cles: operateur de compression, proprietes de la compression, proprietes des statistiques quantiques, fidelite, compression d'amplitude quadratique., 1. IntroductionThe Glauber coherent states have many applications in different branches of quantum optics and quantum information [1, 2]. In recent years, much attention has been paid to the generation [...]

This research has produced Al-Zn-Mg-Cu alloy containing 20%(mass fraction,the same below) alloying elements by the Hot-top semi-continuous DC casting equipment, which has adopted purifying and refining on-line technologies. This alloy has broken the limit of 7000 Al-alloy containing no more than 14% alloying elements. The microstructure and fracture of the alloy were investigated by optical microscopy (OM), transmission electron microscopy (TEM) and scanning electron microscopy (SEM), the temperature of phases transformation was investigated by differential scanning calorimetry (DSC), and the hardness and tensile properties were also tested. The tensile strength, yield strength and elongation of this alloy can be up to 810.3, 799.3MPa and 3.4% by RRA heat-treatment after extrusion. Through the study on the single and tertiary-stage ageing treatment kinetics, the optimum ageing temperature 120℃ is identified and a wider range of aging time can be chosen. Moreover, no other precipitates are found in the alloy containing 16.1%Zn element,and the joint strengthening comes from the undissolved second phase and the ageing precipitation η' phase.

In this study, a novel mononuclear complex In(H2nha)3 (1) (H3nha = 3-hydroxy-2-napthanoic hydroxamic acid) was synthesized and characterized. Single-crystal X-ray diffraction revealed that 1 possesses a centrosymmetric structure consisting of one In(III) and three partially deprotonated ligands. Luminescent studies suggested that 1 could selectively and sensitively recognize Al3+ and B4O72− through fluorescence enhancement effect, even could be directly observed with naked eyes under 365 nm ultraviolet lamp, and their detection limits can be as low as 1.3 and 6.2 μM, respectively. Moreover, the mechanism of their fluorescence enhancement was explored. [ABSTRACT FROM AUTHOR]

A kind of Al-Zn-Mg-Cu alloy containing 9.6%(mass fraction) Zn element was produced by the Hot-top semi-continuous DC casting technology. The microstructure of the alloy and the temperature of phases transformation were investigated by optical microscopy(OM),transmission electron microscopy(TEM) and differential scanning calorimetry(DSC) respectively.The hardness and tensile properties of the alloy were tested,and the fracture was studied by scanning electron microscopy(SEM).Results show that the as-cast microstructure of this alloy is fine and has less intergranular eutectic phases, with the melting temperature of 473.4℃. Therefore, the homogenization heat-treatment is 465℃/24h. After the homogenization heat-treatment, the grain boundary of the ingot has turned to be intermittent and the phases have dissolved significantly. Besides, the systematic experiments were conducted on the T6 and RRA of this alloy after extrusion. The results show that on the condition of 135℃/12h treatment, the highest hardness is 197.7HBS, and the tensile strength, yield strength, elongation are 727.5, 718.0MPa and 9.3% respectively. On the condition of 120℃/24h+190℃/5min+135℃/3h treatment, the highest hardness is 204.7HBS, and the tensile strength, yield strength, elongation can reach 764.0, 749.0MPa and 7.2% respectively.