虚构的法拉第定律与几个关键实验不符

由于法拉第定律是虚构,所以它不具有普适性,感应电流的产生与磁通量变化率无关,产生感应电流的物理本质是完整洛伦兹磁力。     

工业CT图像均匀性校正

在工业CT图像重建过程中,射束硬化使得图像出现“杯状”伪影,阵列探测器响应不一致使得图像出现环状伪影、带状伪影和点伪影,影响图像均匀性.本文分析了射束硬化的原理和探测器响应不一致的数学模型,并通过实验,对探测器响应进行多挡板定标得到校正系数表.利用查表插值的方法对投影数据进行均匀性校正,消除上述伪影.     

与铷（5^2S1／2）原子碰撞产生的铷7^2D态精细结构转移截面

本文报道使用蒸汽泡和两光子两步激发方法,测量原子激发态敏化荧光I_(3/2)~1和直接荧光I_(3/2)~2其与温度的关系,得到与基态(5~2S_(1/2)铷原子碰撞产生的铷7~2D_(5/2)→7~2D_(3/2)和7~2D_(3/2)→7~2D_(5/2)精细结构转移截面分别为:σ_(fs)=4.7×10~(-13)cm~2、σ_(fs)~’=7.0×10~(-13)cm~2;碰撞转移出7~2D双态的转移截面σ_(tr)(5/2)=0.62×10~(-13)cm~2.由计算的7~2D态几何截面σ_(geom)能够相对很好地描述σ_(fs)和σ_(fs)~’的数量级.     

能动反射镜低频像差补偿能力分析

 采用Algor软件包并利用有限元法对37单元能动反射镜低频误差补偿能力进行了分析计算，确定了镜面厚度8mm，驱动器间距46mm，极头直径12mm等能动反射镜制造的关键参数。通过计算机仿真分析证明，基于这些参数所设计的能动反射镜可以对低频误差进行有效校正，校正精度的均方根值小于等于λ／８，从而可以为能动反射镜的制造提供理论依据。     

A FURTHER STUDY OF QUASI RESONATING GROUP METHOD—— ANALYSIS OF p+6Li ELASTIC SCATTERING

In this paper,the elastic scattering of p+⁶Li is studied by 3QRGM,a three-cluster RGM omitting the antisymmetrization with the nucleon in the double magic cluster.The main conclusion from studying the systems of p+⁶Li and n+⁶Li is the following:The clustering and exchange effects lower the phase shifts conspicuously.hence they are very important in the lower energy region.     

Y(Mn1-xCox)12磁结构的中子衍射分析

在研究Y(Mn_1-xCo_x)₁₂晶体结构的基础上,为了分析这种化合物的磁结构,我们挑选了不同成分的试样,在液氮温度下作了中子衍射测量。实验上测到的磁有序超结构峰可以用YMn₁₂单胞指标化为h十k+l=2n+1。使用各种可能的磁结构模型对数据进行了分析,根据计算强度与观测强度的最佳拟合,得出了Y(Mn_1-xCo_x)₁₂的磁结构随x变化的某些结论。 关键词：     

高精度超短脉冲激光多路同步延时触发控制系统

 该系统采用高速的ECL电路,实现了与82MHz飞秒激光脉冲序列中一个脉冲前沿严格精确同步的单脉冲输出;采用标准频率计数法和高精度线性斜波电压产生法,实现了延时时间调节范围宽(1ns～999μs)、调节精度高(1ns)、输出路数多(20路)的触发控制信号。     

用长气体靶研究22Na+α共振散射

在日本东京大学CRIB 次级束装置上,用长气体靶开展了22Na+ α共振散射的厚靶实验研究。针对长气体靶实验中的两体运动学重构问题,提出了一套包括构建空间复杂几何关系、计算能量损失以及反应运动学的逐事件分析方法;对22Na+α共振散射的实验数据进行了重构分析,得到了E_c.m. = 4.2 ~ 5.4 MeV 区间22Na( α,α ) 的激发函数,从实验的激发函数中观测到了复合核26Al 5 个较为明显的共振峰。鉴于26Al 共振态的衰变模式比较复杂,本工作发现的26Al新共振态的能级性质有待进一步的理论分析。The 22Na+α resonant scattering is studied via a conventional thick target inverse kinematic method with an extended gas target. A data analysis method is proposed for the two-body reaction kinematic reconstruction, in which the spatial geometry, the reaction kinematics and the energy losses are considered. The experimental data of 22Na+ αresonant scattering have been thus reconstructed, and the excitation function is obtained in the energy interval of Ec.m. =4.2~5.4 MeV. Five resonant states in 26Al are observed in the experimental excitation function. Since several decay modes coexist for the observed 26Al resonant states, multi-channel theoretical analysis is thus needed to reveal their structure and decay features.     

HL-2A 装置低杂波系统高功率速调管调试

建立了低杂波系统调试平台,在此平台上对4 只TH2103A 型高功率速调管及传输线主要部件进行了短脉冲调试,对每只速调管运行参数进行了优化和标定。在50kV/20A 的束电流条件下,速调管工作脉冲脉宽为30ms,4 只速调管输出功率分别为449kW、417kW、460kW 和450kW。测试数据和调试结果为下一步在HL-2A 装置上建设低杂波系统、开展物理实验等提供了重要的参考数据。     

Complete Analysis of Four-Photon χ-Type Entangled State via Cross-Kerr Nonlinearity

We propose an efficient method to construct an optical four-photon |χ> state analyzer via the cross-Kerr nonlinearity combined with linear optical elements. In this protocol, two four-qubit parity-check gates and two controlled phase gates are employed. We show that all the 16 orthogonal four-qubit |χ> states can be completely discriminated with our apparatus. The scheme is feasible and realizable with current technology. It may have useful potential applications in quantum information processing which based on |χ> state.