The Plasma Impedance Probe: A quadrature sampling technique.

机译：等离子体阻抗探头：一种正交采样技术。

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The ionosphere, a conducting layer in the Earth's upper atmosphere, is the nearest naturally occurring plasma. A plasma may be made to resonate at a specific frequency that is a function of the number of free electrons in the plasma. These resonant properties can be stimulated by an antenna immersed in the plasma that is operating at radio frequencies. The density is measured by observing the resonant properties via the impedance characteristics of the antenna. The Plasma Impedance Probe (PIP) is a suite of instruments consisting of a Plasma Frequency Probe (PFP), a Swept Impedance Probe (SIP), and a DC Langmuir probe.; Over a forty-year period the plasma frequency probe has undergone many design iterations and improvements. During the past two years, the instrument has been revised once again, utilizing the latest in analog and digital electronics. This thesis details current improvements and their effect on instrument performance.

机译：电离层是地球高层大气中的导电层，是最接近的自然发生的等离子体。可以使等离子体在特定频率下共振，该特定频率是等离子体中自由电子数量的函数。可以通过将天线浸入以射频工作的等离子体中来激发这些共振特性。通过经由天线的阻抗特性观察谐振特性来测量密度。等离子体阻抗探头（PIP）是一套由等离子体频率探头（PFP），扫频阻抗探头（SIP）和DC Langmuir探头组成的仪器。在40年的时间里，等离子频率探头经历了许多设计迭代和改进。在过去的两年中，该仪器通过使用最新的模拟和数字电子技术再次进行了修订。本文详细介绍了当前的改进及其对仪器性能的影响。

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作者
Hummel, Albert.;
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Utah State University.;

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授予单位 Utah State University.;
学科 Engineering Electronics and Electrical.; Physics Atmospheric Science.; Physics Fluid and Plasma.
学位 M.S.
年度 2006
页码 71 p.
总页数 71
原文格式 PDF
正文语种 eng
中图分类无线电电子学、电信技术;大气科学（气象学）;等离子体物理学;
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专利

1. A comparative study of dc biased RF impedance probes and Langmuir probes for the measurement of processing plasma parameters [J] . Boris D.R., Fernsler R.F., Walton S.G. Plasma Sources Science & Technology . 2012,第1期

机译：直流偏置RF阻抗探头和Langmuir探头用于测量加工等离子体参数的比较研究
2. Impedance probe and dc probe studies on a collisional plasma in an arc discharge [J] . Journal of Applied Physics . 1975,第5期

机译：电弧放电中碰撞等离子体的阻抗探针和直流探针研究
3. Effects of sample probe insertion on plasma conditions in direct sample insertion-inductively coupled plasma-atomic emission spectrometry [J] . Chan GCY., Chan WT., Fan MN. Spectrochimica Acta, Part B. Atomic Spectroscopy . 2001,第1期

机译：直接样品插入-电感耦合等离子体-原子发射光谱法中样品探针插入对血浆条件的影响
4. Plasma diagnostics with a high-aspect ratio cylindrical probe used as an impedance probe [C] . Walker D.N., Fernsler R.F., Blackwell D.D., 2011 Abstracts IEEE International Conference on Plasma Science . 2011

机译：使用高纵横比圆柱形探针作为阻抗探针的等离子体诊断
5. Next-generation plasma frequency probe instrumentation technique. [D] . Carlson, Chad G. 2004

机译：下一代等离子频率探针仪器技术。
6. Comparison of culture and a multiplex probe PCR for identifying Mycoplasma species in bovine milk, semen and swab samples [O] . Alysia M. Parker, John K. House, Mark S. Hazelton, 2012

机译：用于鉴定牛乳，精液和拭子样品中支原体种类的培养物和多重探针PCR的比较
7. An experimental study of supersonic mixing process by using shock tunnel using quick-action valves and quick-mass-sampling probe technique. [O] . Masahiro HATAKEYAMA, Katsushi FUNABIKI, Takashi ABE 1989

机译：快速动作阀和快质量采样探针技术用冲击隧道使用冲击隧道的超声波混合过程的实验研究。
8. Effects of Quadrature Sampling Imbalances on a Phase Difference Analysis Technique. [R] . Sharpin, D. L., Tsui, J. B., Hedge, J., 1990

机译：正交采样不平衡对相位差分析技术的影响。

The Plasma Impedance Probe: A quadrature sampling technique.

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