10 research outputs found

    Preparation and quantum confinement effect of PbI_2/CdI_2 superlattices

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    PbI_2/CdI_2 superlattices (multi-quantum well) have been grown by a hot wall epitaxy. Characteristic peaks due to a long period of superlattices appear on X-ray diffraction patterns. From the analysis of these patterns, thicknesses of both PbI_2 and CdI_2 layers of prepared samples are identified. Optical measurement shows that exciton transition energies in PbI_2/CdI_2 superlattices shift to the higher energy side with the decrease in thickness of PbI_2 layer. The analysis of this shift by the variational calculation of exciton and the observation of strong exciton peaks indicate PbI_2/CdI_2 superlattices belong to the type I superlattice

    Study on Plasma Shape Reproduction of Spherical

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    Cauchy-Condition Surface (CCS) method is a numerical approach to reproduce plasma shape which has good precision in conventional tokamak. In order to apply it in the plasma shape repro-duction of Compact PWI experimental Device (CPD) which is a new spherical tokamak in Kyushu University, the calculation results of CCS method on CPD is reported in the paper

    Study on Plasma Shape Reproduction of Spherical

    No full text
    Cauchy-Condition Surface (CCS) method is a numerical approach to reproduce plasma shape which has good precision in conventional tokamak. In order to apply it in the plasma shape repro-duction of Compact PWI experimental Device (CPD) which is a new spherical tokamak in Kyushu University, the calculation results of CCS method on CPD is reported in the paper
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