Topic
Spectrum analyzer
About: Spectrum analyzer is a research topic. Over the lifetime, 12217 publications have been published within this topic receiving 101851 citations.
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TL;DR: In this paper, a two-dimensional, multi-angle energy analyzer for photoemission spectroscopy has been developed which consists of an ellipsoidal mirror low pass filter, a retarding field high pass filter and CEMA plates as an area detector.
40 citations
Patent•
01 Aug 1977TL;DR: In this paper, a method and apparatus for automatically sampling and analyzing a multitude of sample points from an area, using one analyzer and a control system to sequentially send samples for analysis.
Abstract: A method and apparatus for automatically sampling and analyzing a multitude of sample points from an area, using one analyzer and a control system to sequentially send samples for analysis.
40 citations
TL;DR: In this paper, the construction of a mass and energy analyzer applicable for studies of ion streams generated by plasma focus facilities is presented. And an appropriate ion extractor (skimmer) system is described.
Abstract: The construction of a mass and energy analyzer applicable for studies of ion streams generated by plasma focus facilities is presented. An appropriate ion extractor (skimmer) system is described. A simple calibration method of the device is also given.
40 citations
Patent•
19 Sep 1978TL;DR: In this paper, a pair of acoustic detectors are moved through a well to detect sound at various levels within the well, and electrical signals indicative of the detected sound are applied from the acoustic detectors by way of a conductor cable to uphole recording equipment including an amplifier, spectrum analyzer, cross-correlator, and recorder.
Abstract: A pair of acoustic detectors are moved through a well to detect sound at various levels within the well. Electrical signals indicative of the detected sound are applied from the acoustic detectors by way of a conductor cable to uphole recording equipment including an amplifier, spectrum analyzer, crosscorrelator, and recorder. The spectrum analyzer provides frequency spectrums of the amplified signals from the acoustic detectors. The crosscorrelator provides an indication of the time differential between the traveltimes of acoustic noise to the acoustic detectors for use in the location of flow leaks through or behind the well casing.
40 citations
TL;DR: In this article, the authors describe the construction and performance of a new electron spectrometer for analysis of low kinetic energy electrons, 0-2000 eV, based on computer calculations and combines many favorable properties of both the retarding and the deflection energy analyzer.
Abstract: We describe the construction and performance of a new electron spectrometer for analysis of low kinetic energy electrons, 0–2000 eV. The design of the analyzer is based on computer calculations and combines many favorable properties of both the retarding and the deflection energy analyzer. The energy analyzer consists of a set of electrodes with cylindrical symmetry and a planar retarding field grid followed by an electrode system with postmonochromatic action. Therefore a differential spectrum is obtained directly. The performance of the analyzer is discussed in terms of resolution, sensitivity, luminosity, and signal‐to‐background. The resolution achieved is 0.5%, with a resolution of 30 meV, making it possible to resolve and study electronic vibrational levels in atoms and molecules. A few spectra of nitrogen and argon are shown as representative of the performance of the new analyzer.
40 citations