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磁粉是录音、录像磁带的主要材料,分析的目的是寻找杂质及其含量与磁带质量的关系。本文拟定了一个在直流电弧阳极激发条件下的显线法,结合阶梯减光器的透光率的目视测量方法,快速分析磁粉样品为磁粉生产的质量监控提供了帮助。光谱分析时,光谱中各条分析线在一定条件下,有它的检出浓度。根据不同检出浓度的谱线的显线情况,可以作为估量的依据。典型的例子是苏联加里宁编制的各种图谱,如“石英棱镜摄谱仪图谱。该图谱上的分析线标有1～10号的强度标,代表该谱线的检出浓度。这些强度标的级差通常是半个数量级。应用这些数据进行估量时,除了实验条件(取样量、放电参数、曝光条件、光谱仪相对孔径、感光板特性等要严格一致外,分析结果的可靠性很大程度上取决于操作者的个人技术和经验。
Magnetic powder is the main material for recording and video tapes. The purpose of the analysis is to find out the relationship between the impurities and their contents and the quality of the tapes. In this paper, we develop a visual display method based on DC arc anodic excitation and visual analysis of the transmittance of the ladder dimmer. The rapid analysis of the magnetic powder samples helps to monitor the quality of the magnetic powder production. Spectral analysis, the spectrum of the analysis line under certain conditions, it has detected the concentration. According to the detection of different concentrations of the line of the line, can be used as a basis for estimation. A typical example is a variety of maps compiled by the Soviet Union Kalinin, such as ”quartz prism spectrograph." The analysis of the line marked with the intensity of the scale No. 1 to 10, on behalf of the detected concentration of the line. The standard deviation is usually a half orders of magnitude. When using these data to estimate, in addition to the experimental conditions (sampling volume, discharge parameters, exposure conditions, the relative aperture of the spectrometer, the characteristics of the plate should be strictly consistent, the reliability of the analysis results to a large extent Depends on the operator’s personal skills and experience.