Visible iodine and bromine laser,and coaxial discharge excited strong UV iodine laser

Nine new Br and I ion laser lines in the visible and the UV regions were observed by ordinary longitudinal pulsed discharge or coaxial pulsed discharge. This is the first time that the UV I ion laser was obtained with an output much stronger than that of ordinary pulsed ion lasers. The characteristics of the laser output were investigated in the case of coaxial discharge.     

Littlewood—Paley算子及Marcinkiewicz积分在Campanato空间εa,p上的有界性

我们证明了下述结果:若f∈ε^a,p,则适当限制参数值时,有g(f)(x)(S(f)(x),g_λ^*(f)(x),μ(f)(x))<∞a.e.,或者g(f)(x)(S(f)(x),g_λ^*(f)(x),μ(f)(x))<∞a.e.;并且在前者成立时,有g(f)(S(f),g_λ^*(f),μ(f))∈ε^a,p,以及‖g(f)‖_a,p     

圆薄板非对称大变形弯曲问题

本文首先导出圆薄板非轴对称大变形问题的位移基本方程及边界条件.利用变换和摄动法将非线性位移方程线性化,得到了近似边值问题.作为算例,文中研究了圆薄板在较复杂载荷作用下的非线性弯曲问题.     

K promoted oxidation of Al and Ta

Core level and valence band photoemission have been used to study the response to oxygen exposure of potassium-precovered, polycrystalline aluminum and tantalum substrates. Deposition of potassium overlayers in the coverage regime from zero to one monolayer, results in an increase of the rate of oxygen uptake for both substrates. The increased oxygen uptake is, however, relatively stronger on aluminum. Correlated measurements of work function and oxygen uptake show that there is a correspondence between these two parameters for low K coverages, i.e., lower work function results in higher oxygen uptake. These results may be understood in terms of a model in which the alkali atoms are increasing the rate of dissociation of oxygen molecules at the surface, as well as lowering the barrier for oxygen penetration into the surface, through a reduction in the system work function.     

1.5特斯拉脉冲磁场装置的研制

本文介绍了用于控制强流相对论电子束能通量密度和均匀性的脉冲磁场装置。该装置由磁场电源、磁场线圈及电子束漂移管等组成。脉冲磁场是由储能电容器通过六个触发真空开关对线圈放电产生的。电容器总储能为180kJ,最大充电电压为10.0kV,脉冲磁场上升前沿约为8.38ms。在充电电压为7.0kV时,测得磁感应强度为1.81T。本文还对不同靶材料对磁感应强度分布的影响进行了研究,并简单介绍了主机与磁场的同步装置。脉冲磁场装置已用于闪光Ⅱ号加速器中,经过上百炮运行证明其工作比较可靠,并达到了控制电子束能通量密度和改善束均匀性的目的。     

高分辨率电感耦合等离子体光谱谱线数据库 I.镧、铈、镨、钕、钐

讨论了高分辨率光谱实验的光谱仪参数。在带宽3pm条件下摄取了稀土元素La、Ce、Pr、Nd、Sm的高分辨率ICP光谱,鉴别了240～450mm波长范围内的谱线,估测了强度.观察到一些谱线的复杂物理轮郭。     

激光二极管列阵泵浦的Nd：BGO腔内倍频激光器稳定输出的研究

首次报道激光二极管列阵浦的Ｎｄ：ＢＧＯ腔内倍频激光器的实验研究结果。在激光谐振腔内加布儒斯特片与倍频晶体ＫＴＰ形成Ｌｏｙｔ双折射滤光片。以此进行选模，获得了３．５ｍＷ连续，稳定的单模绿光输出。     

对衍射理论的一点理解

本文指出ｉ相移是Ｆｒｅｓｎｅｌ衍射原理自洽的要求。通过对基尔霍夫衍射积分公式的分析，证明ｉ是次级子球面波各向不均匀发射的结果，并且是波动方程要求的。