Toeplitz算子空间的ω~＊－闭包

本文讨论Ｔｏｅｐｌｉｔｚ算子空间的ω￣＊－闭包．我们证明Ｂｅｒｇｍａｎ空间上全体Ｔｏｅｐｌｉｔｚ算子的ω￣＊－闭包等于（定理１）．另外，我们给出Ｃ￣ｎ（ｎ＞１）中单位球面Ｓ上的Ｈａｒｄｙ空间Ｈ￣２（Ｓ）上的Ｔｏｅｐｌｉｔｚ算子的一个有趣刻划（命题２）．     

Composition operators on a Banach space of analytic functions

In this paper, we study composition operators on a Banach space of analytic functions, denoted byX, which includes the Bloch space. This space arises naturally as the dual space of analytic functions in the Bergman spaceL _α ¹ (D) which admit an atomic decomposition. We characterize the functions which induce compact composition operators and those which induce Fredholm operatorson this space. We also investigate when a composition operator has a closed range. Supported by NNSFC No.19671036     

点火靶半腔套装实验系统设计

根据美国NIF点火基准靶REV4.0要求，对半腔套装工艺进行了具体的参数分析，确定了半黑腔与冷冻罩的铝套筒过盈配合公差带等关键参数，制定了装配系统技术指标，设计了系统方案，研制了实验样机。该样机具有12个电控台，重复定位精度达到0.3 m和0.01，并配备激光测头和6轴微力传感器，对靶件姿态与套装过程中的受力情况进行检测，可完成半黑腔套入与入射孔衬垫装配两道工序。利用该样机对模拟靶件进行了装配实验，半黑腔与铝套筒同轴度为8 m，轴向与径向夹角优于0.5，验证了装配工艺与系统功能的有效性。