r射线发射几率及其不确定度

详细介绍了r射线绝对强度的各种计算方法，重点分析了r射线绝对强度的不确定度，并给出了其不确定度的相关计算公式．对影响r射线绝对强度不确定度的因素做了详细讨论，首次明确了不确定度计算过程中的“误差二次计算”、“Ir=100”等问题．     

A Method for Determining the Phase Transition Point of the Bose-Einstein Condensation by Judging the Fitting Errors

In this paper, We demonstrate an approach to determine the phase transition point and critical temperature of Bose-Einstein condensation. During the fitting sequence of time-of-flight images, for just one picture we take four kinds of different calculations instead of only one. By calculating the quantitative least-square errors, which have always been neglected before, we find out that this value can act as a criterion to judge the status of atom clouds. Using this criterion, we can not only discriminate the status around the phase transition point, but can also find the critical point precisely. Also with this method, we can achieve the totally automatical running of calculating programs without human＇s judgments.     

多胺对几种海洋微藻扩繁的影响

为探究多胺对海洋微藻扩繁的影响, 在外加外源多胺条件下对假微型海链藻、角毛藻、东海原甲藻、扁藻和微绿球藻进行室内培养. 结果表明: 在适宜温度条件下(23℃), 外源多胺对不同微藻生长差别很大, 其中对硅藻扩繁促进效应比较稳定; 而对其他门类的微藻, 外源多胺的促进效果比较差, 甚至具备一定的抑制效应. 而在不同温度条件下, 5种胺对角毛藻的生长有差异, 其中23℃条件下, 与对照相比, 多胺对角毛藻生长是促进作用; 而在15℃和30℃条件下, 多胺对角毛藻生长起抑制作用.     

光斑矩参数阵列测试法的测量不确定度

光斑强度分布的测试在目标跟踪检测、激光光束质量诊断和激光束波前测量等方面具有重要：意义。常用的光斑测试法有面阵CCD法、线阵CCD扫描法、单元探测器扫描法、热敏纸法以及针对某些特殊应用的各具特色的阵列测试设备法。这些方法最终都将给出探测面上光斑强度二维离散分布数据，故都可等效为阵列测试法。     

Ar^＋光电流光谱研究

本文报道了HCL中八条ArII光电流光谱的实验研究结果.观察了HCL的荧光光谱和激光感生荧光光谱,提出一个经验公式解释Ar~+光电流光谱的主要机理.发现每条谱线光电流信号达到最大值时的放电电流与该跃迁的上能级能量之间有一定关系.     

Observation of F = 2 Spinor Bose-Einstein Condensation in a Magnetic Field

Multiple-component Bose-Einstein condensation has been observed in a magnetic field generated by a controllable magnetic quadrupole-Ioffe-configuration trap. Different distributions of atoms in spinor Bose Einstein condensates are created by changing the time difference of switching-off current in quadrupole-Ioffe-configuration coils and bias coils of the magnetic trap. A simple analysis is carried out to explain some phenomena of the experiment.