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Halo structures of some light mirror nuclei are investigated with the relativistic mean field (RMF) theory. The calculations show that the dispersion of the valence proton is larger than that of the valence neutron in its mirror nucleus, the difference between the root-mean-square (rms) radius of the valence nucleon in each pair of mirror nuclei becomes smaller with the increase of the mass number A, and all the ratios of the rms radius of the valence nucleon to that of the matter in each pair of mirror nuclei decrease almost linearly with the increase of the mass number A. 相似文献
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受自身体积、重量、抗震性能等方面的限制,傅里叶变换红外光谱仪(FTIR)难以在工业现场的应用中取得很好的效果. 在充分利用立体角镜与平面折返镜各自光学特性的基础上,设计了一种自补偿型的双摆式干涉仪,在光学原理上解决干涉仪稳定性的问题. 通过对扫描机构的电力学分析与建模,建立了控制器与扫描速度之间的关系,并利用高速数字信号处理(DSP)技术实现相应的控制算法,能够将速度误差控制在±0.2%的范围内. 通过对仪器性能及标准样品的测试表明,仪器具有较高的信噪比与稳定性,能够满足工业应用的需求. 相似文献
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The structures of ^148-158Sm are studied in the frame of the interacting boson model. Attention is given to the triaxial interaction, and it is found that the triaxial interaction plays an important role in the detailed structure of this isotopic chain. The potential surfaces of these nuclei are also studied and the shapes of them are analysed. And it is found that though the triaxial interaction plays an important role in these nuclei, there are no stable triaxial shapes in the low-lying structures of these nuclei. 相似文献
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清华大学物理系自2020年10月开始HTML5数值仿真物理实验(Numerical Simulation Experiment of Physics,简称NuSEP系统)建设工作,已经建成32个仿真实验,覆盖物理学多个方向。首期目标是全面支持清华基础课课堂教学、实验教学与对外科普宣传。建设过程得到多所院校、专业科研机构的支持。本文首先回顾了NuSEP系统建设背景,之后重点介绍NuSEP系统建设目标、建设思路、建设流程、建设要点与难点以及初步应用体验。期望与国内国际同行探讨合作开发与开放模式。 相似文献
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经化学成分设计、原料精选、熔炼加工、均匀性检验等步骤,研制了硅青铜光谱标准样品.该硅青铜光谱标准样品以高纯铜为主原料,按杂质元素的性质,在选定的条件下分批加入Si、Ni、Zn等15种杂质元素制备而成.杂质元素的定值区间分别为:Zn 0.112%~4.29%,Pb 0.030%~0.264%,Sn 0.055%~0.61... 相似文献
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完美涡旋光束(POVB)的光斑不随拓扑荷的变化而变化,在微粒操控、光通信、激光材料处理等领域具有广泛应用。POVB的准确识别具有重要的研究意义。提出一种卷积神经网络结合多孔干涉仪的方法来识别0.01阶分数POVB。实验结果表明,在理想环境下,0.01阶分数POVB的识别率达到100%。在扇形遮挡90°和扇形遮挡180°情况下,0.01阶分数POVB的识别率分别达到100%和99.5%。本研究为识别0.01阶分数POVB提供了一种新的方法,对于该光束的应用和推广具有重要意义。 相似文献