分布式多通道计算机视觉测量系统

提出了一种新颖的分布式多通道计算机视觉测量系统 ,并成功地解决了钢卷尺自动检测问题。讨论了系统的原理、HUB控制器的设计、图像自动识别与自动检测以及定时器编程等核心技术。实践证明 ,分布式多通道计算机视觉测量系统可以实现工业领域中多目标的高速视觉测量与在线质量监控     

奇Z超重核的禁戒α衰变(英文)

采用密度依赖的结团模型研究了奇Z 超重核的禁戒α衰变, 粒子与子核之间的微观核势通过双折叠模型对M3Y 核子-核子相互作用势以及 粒子与子核的密度积分给出。 粒子与子核之间的库仑相互作用也通过 粒子与子核的电荷密度积分给出。计算发现,由于非零角动量带来的禁戒效应和小的α粒子预形成几率,奇Z 超重核的α衰变寿命会明显变长。We investigate the α-transition of odd-Z superheavy nuclei by the density-dependent cluster model (DDCM). The microscopic nuclear potential between the -particle and the daughter nucleus is evaluated numerically from the double-folding model with the standard M3Y nucleon-nucleon interaction. The Coulomb potential is also obtained from the double-folding integral of the proton-proton Coulomb interaction with the charge density distributions of α-particle and daughter nucleus. From our calculations, enhanced stability againstα-decays is found for the odd-Z superheavy nuclei due to the hindrance effect of non-zero angular momentum and the small preformation factor of the -particle.     

α–结团模型对超重核α衰变寿命的研究

用α结团模型计算新合成超重元素的半衰期,与已知的实验数据进行对比分析,发现理论和实验数据能够很好地符合,验证了α结团模型对超重核研究的有效性.同时结合标准的形变Har-tree-Fock模型核质量表给出半衰期理论计算结果,可供以后在理论或实验上研究超重核参考,在此基础上进一步分析超重核区域的α衰变能、双中子分离能和双质子分离能,并讨论Z=114和N=184处是否存在壳效应.     

通过（p,n）反应实验数据提取对称能(英文)

通过分析（p,n）电荷交换反应的微分散射截面数据,得到了核子光学势实部的同位旋矢量项。（p,n）反应的微分散射截面的大小正比于核子光学势实部的同位旋矢量项v1的平方,利用平面波玻恩近似可以直接提取v1的值。再根据HVH理论,利用v1的值能够得到对称能Esym(ρ0)和它的密度依赖斜率L(ρ0)的值。得到的结果Esym(ρ0)=28.5 MeV, L(ρ0)=76.0 MeV与分析原子核质量和其他核实验数据得到的结果符合较好。The isovector term of the real part of the nucleon optical potential is obtained by analysing differential cross section data of (p,n) charge exchange reaction. The magnitude of the differential cross section of (p,n) experiment is proportional to the square of the isovector term of the real part of the nucleon optical potential v1, so the extraction of the value of v1 is straightforward by using the plane wave Born approximation. Based on the Hugenholtz-Van Hove theorem, the nuclear symmetry energy Esym(ρ0) and its density slope L(ρ0) are estimated by using the extracted value of v1. The calculated results Esym(ρ0)=(28.5±2.0) MeV, L(ρ0)=(67.0±5.0) MeV agree reasonably with those extracted by analysing nuclear masses and other experimental data.     

Research on some superheavy nuclei

Studies on some superheavy nuclei are performed. The α decay energies are calculated by an improved local binding energy formula, and the α decay half-lives are calculated by the Viola-Seaborg formula. Good agreements between theoretical and experimental results are reached.     

A Simple Systematical Law of E2＋ Values for Heavy Nuclei in the NpNn Scheme and the Evolution of the Z=64 Shell Gap

A systematics of excitation energy of the first 2^＋ state E2＋ in even-even heavy nuclei （A ≥ 120） is studied in the NpNn scheme. It is found that a simple exponential function describes the dependence of E2＋ values on NpNn values very well. In addition, the Z = 64 shell gap is reexamined by investigating the systematics of the 52 ≤ Z ≤66 region. It is found that the Z = 64 shell gap is largest at N = 82 and becomes smMler with either increasing or decreasing of neutron numbers. The effects of this shell gap become negligible for counting the valence proton numbers when N ≥ 92 or N ≤ 72.     

基于PLC的加热炉温度曲线控制系统设计

为了补偿环境温湿度对望远镜系统的不利影响,提高大型光电望远镜的成像能力,设计了一种基于CAN总线的温湿度监测系统。系统采用总线式拓扑结构,主要由数字式传感器SHT15、C8051F500单片机、CAN总线以及上位机组成。单片机与传感器之间利用SMBus进行通信,单片机读取传感器数据后,经由CAN总线将数据传送到上位机,上位机实时处理显示温湿度信息。系统设计完成后在实验室中进行了验证实验,成功读取了两个节点的传感器采集到的数据,能够进一步应用于实际工作中。