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喷气式Z箍等离子体装置可以产生较强的软X射线,能量大约在2-6keV之间,利用此装置产生的软X射线,用CSM作光刻胶,进行了X射线光刻的初步研究,得到了较为的光刻图形,曝光深度估计在10μm左右。 相似文献
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一种新型的软X射线二极管 总被引:3,自引:0,他引:3
介绍了用于激光等离子体发射的X射线量测量的一种新型的软X射线二极管(即XRD〕的结构、原理、性能、标定及其应用。该探测器具有体积小、响应快、使用方便等优点,1990年和1991年已两次成功地用于“神光”装置上激光等离子体发射X射线测量。 相似文献
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在X射线发现百周年之际,本文回顾了X射线发现的历史及其重要意义,简要评述了100年来X射线的研究和应用的光辉历程及其对现代科学技术的发展所产生的巨大影响,介绍了X射线研究的一些最新进展,展望了二十一世纪X射线研究和应用的美好前景。 相似文献
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关 于X光折射率小于1的讨论 总被引:2,自引:0,他引:2
本文从几个不同的方面讨论了X光的折射率,并通过简单的数据分析,对由“X光折射率小于1”而容易引出“能量传播速度大于光速”这一结论的模糊认识进行了澄清。 相似文献
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5F软X光胶片响应特性研究 总被引:7,自引:0,他引:7
提出了5F软X光胶片对低能X射线结响应的数学模型,模型中部份参数由厂家提供,其余参数由在183eV和933eV两能点实验标定的胶片响应曲线确定,数学模型及参数有有效性用282eV能点处5F软X胶片的实验响应曲线进行了初步检验。 相似文献
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ABSTRACTParticulate matters, gaseous chemicals, and heavy metals emitted from industrial processes into the environment could be directly transmitted to humans through air inhalation. In order to accurately estimate health risk and control the source of pollution caused by cement raw meal, an online X-ray fluorescence analyzer system, consisting of an X-ray fluorescence analyzer with data acquisition software and a laser rangefinder, was developed to carry out the measurement of heavy metals in cement raw meal. The X-ray fluorescence analyzer was mounted on a sled, which can effectively smooth the surface of cement raw meal and reduce the impact of surface roughness during online measurement. The laser rangefinder was mounted over the sled for measuring the distance between cement raw meal sample and the analyzer. Several heavy metals and other elements in cement raw meal were online measured by the X-ray fluorescence analyzer directly above a conveyor belt. The limits of detection for Pb, Cr, Fe, Ti, Ca, and S by the analyzer were 47 ± 1, 33 ± 1, 37 ± 1, 44 ± 1, 246 ± 4, and 118 ± 1 mg kg?1, respectively. The relative standard deviation (RSD) for the elements mentioned was less than 10.7%. By comparison with the results by inductively coupled plasma mass spectrometry (ICP-MS) and CHNS/O elemental analyzer, relative deviation (D) of the online X-ray fluorescence analyzer was less than 7.4% for Fe, Ti, Ca, and S, between 1.71% and 12.10% for Pb and Cr. 相似文献
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R. Verbeni M. Kocsis S. Huotari M. Krisch G. Monaco F. Sette G. Vanko 《Journal of Physics and Chemistry of Solids》2005,66(12):2299-2305
The realization of spherical crystal analyzers for inelastic X-ray scattering experiments (IXS) is an ongoing project at the ESRF since 1992. We developed reliable techniques to routinely produce silicon spherical analyzers with very high (ΔE=1÷10 meV) and high energy resolution (ΔE=0.2÷1.5 eV), and with very good focal properties and efficiency. In this article we report the state of the art of the analyzer construction and the main improvements made during the last years. 相似文献
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采用SI-PIN半导体探测器、241Am激发源和2048通道分析器及自行研制的SI-PIN 2000便携式X荧光分析仪,对钒钛磁铁矿直接粉末样品中Ti,V,Cr,Mn,Fe,Co,Ni,Cu等8个主、次元素进行了分析应用研究。文章叙述了所采用的直接粉末样品法的样品盒结构、基体校正的α系数计算方法、重叠干扰校正原则和漂移校正的方法,并且给出了所选择的分析条件和样品制备方法,分析过程简单、结果准确、分析速度快,特别适应矿山、冶金的生产原料分析需要,有良好的应用前景, 与封闭正比计数器X射线荧光分析仪相比,检出限降低了1个数量级。 相似文献
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Iron oxide of nanometer thickness were grown in situ by step-by-step oxidation of an iron foil to measure the escape probabilities of O 1s photoelectrons as a function of depth of origin, the so-called emission depth distribution function (EDDF), and the mean escape depth (MED). To record photoelectron spectra for a wide range of emission angles, the X-ray excitation source was positioned on the opposite side of the iron foil with respect to the analyzer. To excite photoelectrons on the side of the foil surface adjacent to the analyzer, the foil was made thin enough to be semitransparent to the X-ray radiation. The O 1s spectra were recorded for a wide range of oxide thicknesses until no features of metallic iron were recognized in the photoelectron spectra. The escape probability of the O 1s photoelectrons in the iron oxide was derived from the oxide-thickness dependence of the O 1s peak areas. The resulting EDDF reached a maximum beneath the oxide surface for X-ray incidence and electron-emission angles located along the surface normal. For the same incidence angle and an emission angle of 60°, the escape probability could be well approximated by a simple exponential function. The mean escape depths were obtained for both experimental geometries and agreed well with the available theory. 相似文献
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为了研究Z箍缩等离子体辐射的X射线光谱,研制了可用于“阳”加速器上探测宽频谱范围的X射线椭圆弯曲晶体谱仪。该谱仪晶体分析器采用云母材料,椭圆焦距为1 350 mm,离心率为0.948 5,覆盖布拉格范围为30°~60°,可探测X射线波长范围为0.10~1.73 nm(0.86~1.00 nm除外),用X射线胶片接收光谱信号。探测实验在中国工程物理研究院“阳”加速器上进行,实验结果表明:谱仪获取了氩的类氢共振线Lya及其伴线、类氦共振线(1s2p1P1-1s21S0)w线及磁四级M22跃迁(1s2p3P2-1s21S0)x线、互组合跃迁(1s2p3P1-1s21S0)y线、禁戒谱线(1s2p3S1-1s21S0)z线和K-a线,谱线分辨率达到564。实验证明弯晶谱仪适合于Z箍缩等离子体X射线光谱学诊断。 相似文献
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在北京同步辐射装置(BSRF)的3W1B软X射线光束线上利用自行研制的同步辐射软X射线综合偏振测量装置对Ni的M2,3边附近(60—70 eV)进行了软X射线磁光(magneto-optical)法拉第效应(Faraday effect)的偏转测量,实验装置主要由起偏器,检偏器,样品架,圆形钕铁硼永磁铁和MCP探测器组成,偏振元件(起偏元件和检偏元件)均采用反射式非周期性Mo/Si宽带多层膜.实验采用反射起偏和反射检偏的模式,得到一系列能量范围在60—70 eV间的法拉第偏转角结果,
关键词:
软X射线
磁光Faraday效应
综合偏振测量装置
宽带多层膜 相似文献