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Related Concept Videos

Atomic Emission Spectroscopy: Overview01:20

Atomic Emission Spectroscopy: Overview

Atomic emission spectroscopy (AES) is an analytical technique used to determine the elemental composition of a sample by analyzing the light emitted from excited atoms. In AES, atoms in a sample are excited to higher energy levels by thermal energy from high-temperature sources, such as plasma, arcs, or sparks. When these excited atoms return to lower energy states, they emit light at specific wavelengths characteristic of each element. The resulting atomic emission spectrum, which consists of...
Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation01:26

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation

Inductively coupled plasma (ICP) is the common plasma source used in atomic emission spectroscopy (AES), a technique that detects and analyzes various elements in a sample. This method is often called inductively coupled plasma atomic emission spectroscopy (ICP-AES).
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Mass Spectrum: Interpretation01:24

Mass Spectrum: Interpretation

An unknown compound can be established by identifying the molecular ion peak in the mass spectrum. The molecular ion peak is often weak or absent due to the predominance of fragmentation in high-energy electron beams. In such cases, a soft-energy electron beam can be used to scan the spectrum to enhance the intensity of the molecular ion peak. Additionally, chemical ionization, field ionization, and desorption ionization spectra are used to obtain a relatively intense molecular ion peak.To...

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Threaded article parameter measurement by spatial spectra analysis.

R M Bytchkov, V P Koronkevitch, Y V Chugui

    Applied Optics
    |March 9, 2010
    PubMed
    Summary

    This study explores controlling complex-shaped article parameters like profile angle, mean diameter, and pitch using spatial spectra analysis. This method offers a new way to precisely manage threaded article geometry.

    Area of Science:

    • Engineering and Materials Science
    • Optics and Signal Processing

    Background:

    • Manufacturing complex-shaped articles requires precise control over geometric parameters.
    • Traditional methods for controlling article shape can be complex and time-consuming.

    Purpose of the Study:

    • To investigate the feasibility of using spatial spectra to control key parameters of complicated articles.
    • To establish a method for managing profile angle, mean diameter, and threaded article pitch.

    Main Methods:

    • Analysis of spatial spectra of articles with complex shapes.
    • Correlation of spectral features with geometric parameters (profile angle, mean diameter, pitch).

    Main Results:

    • Demonstrated a direct relationship between spatial spectra and article parameters.

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  • Identified specific spectral characteristics corresponding to profile angle, mean diameter, and pitch.

    • Conclusions:

    • Spatial spectra analysis provides a viable method for controlling complicated article parameters.
    • This technique offers potential for enhanced precision in manufacturing and quality control.