3H-1P多重散射关联及自屏蔽效应对双空穴核能谱的贡献

采用格林函数方法和多重散射理论考察了3H(空穴)-1P(粒子)多重散射关联及自屏蔽效应对38Ca、38K、54Fe和54CO的双空穴核能谱的贡献.计算中采用M-3Y力等效G矩阵元,计算结果表明3H-1P多重散射关联的贡献是明显的,而自屏蔽效应的影响很小,达到了可以忽略的程度.

^（16）O区域原子核的双粒子能谱

采用Ｍ－３Ｙ力作为等效Ｇ－矩阵，用格林函数方法计算了１６Ｏ区域原子核１８Ｏ、１８Ｆ的能谱．计算结果与实验能谱符合较好．从而表明，采用Ｍ－３Ｙ力等效Ｇ－矩阵元。

双满壳层附近原子核的双粒子能谱

采用由M-3Y力等效G矩阵,用格林函数方法对Ca42、Sc42、N i58和Cu58的双粒子能谱做了理论计算和讨论.结果表明:二级图中3p1h不可约顶角考虑多重散射后,使能级更趋于实验能级.因此用格林函数方法计算双粒子能谱是十分有效的。

关于M－3Y力等效G矩阵元在重核区的有效性

采用Ｍ—３Ｙ力等效Ｇ矩阵元，并利用折线图多体方法计算了２１０Ｐｂ、２０６Ｐｂ以及２０６Ｈｇ和２１０Ｐｏ的低能谱．结果表明，Ｍ—３Ｙ力等效Ｇ矩阵元基本上适用于此核区的核结构微观计算．

Effect of excess Y_2O_3 addition on the physical properties of melt processed YBCO bulks

The YBCO superconductors with Y2O3 addition were prepared by a modified melt textured process and the effects of excess Y2O3 addition on the physical properties of melt textured YBCO have been investigated. It is found that the melt temperature of YBCO samples decreases drastically with the increasing Y2O3, and the maximum levitation forces are drastically different for samples with different Y2O3 addition. It is also found that the optimal Y2O3 addition to YBCO is about 10wt%. Considering the microstructure and the starting composition, the results are well discussed and interpreted.

利用电场力抑制多硫化锂穿梭效应

介绍了一种Ti_(x)O_(y)-Ti_(3)C_(2)ene材料,能有效阻止多硫化锂穿梭效应,最终提高锂硫电池性能.利用定向排列材料产生的偏转电场,电场力能够有效抑制穿梭效应,减少电池活性物质损失.用HF刻蚀Ti_(3)AlC_(2),得到二维片层状Ti_(3)C_(2)ene.利用氧化法即可制备Ti_(x)O_(y)-Ti_(3)C_(2)ene材料,超声剥离后制得Ti_(x)O_(y)-Ti_(3)C_(2)ene纳米片层,电沉积法定向排列纳米片层.为了验证弯曲电场力的产生,采用Comso建立Ti_(x)O_(y)-Ti_(3)C_(2)ene模型,该方法可以有效抑制穿梭效应.