Plasma Emission Spectroscopy
Plasma is generated by heating ordinary matter to high temperatures, and is comprised of ions, atoms, and charged particles. As there is high energy within plasma, the atoms and ions present are in excited electronic states. When these relax, light is emitted. These wavelengths are unique to each atom or ion present.
Spectra produced consists of very narrow peaks so high resolution is required to distinguish lines close together. The intensity of light correlates to the concentration of the species within the sample. The high temperatures generated at the beginning of the plasma process gives a continuum emission that masks the sharp lines from individual atomic species. As the plasma quickly cools, the sharp lines become visible.
Spectrometers for Plasma Emission Spectroscopy
The IsoPlane offers the highest spectral resolution and imaging performance to ensure almost perfect capture of information throughout the plasma formation process.
As plasma emission spectroscopy monitors the ionization of samples, a broad range is essential to determine composition of the plasma. With a unique optical design, the IsoPlane completely eliminates astigmatism across the focal plane. This offers multichannel capabilities to obtain broad range spectral information.
The IsoPlane provides twice the light-gathering power of a typical Czerny-Turner spectrograph. This produces sharper images and improved resolution, ideal for distinguishing peaks close together without the need for post-processing techniques.
The SpectraPro HRS is the standard for reliable high-performance spectroscopy, ensuring high spectral resolution, as well as an astigmatism-corrected design for repeatable quantitative chemical analysis, ideal for sharp line detection characteristic of plasma emission.
The SpectraPro HRS is also equipped with spectral deconvolution (ResXtremeTM) and a grating drive system (AccuDriveTM) for increased spectral resolution, highly important for separating close spectral emission lines.
The SpectraPro increases signal to noise ratio up to 60% with up to a three times improvement in wavelength accuracy, in comparison to a typical Czerny-Turner spectrograph. The SpectraPro can provide accurate and reliable spectra for all plasma emission spectroscopy applications.
Cameras for Plasma Emission Spectroscopy
The PI-MAX4 delivers excellent precision timing, sensitivity, intelligence and speed through the combination of EMCCD and ICCD sensor technology.
As plasma emission spectroscopy utilizes the emission lines from ionized atoms to study composition, a high light throughput is required for capturing all available spectral information. The coupling of the EMCCD to an imaging intensifier, present within the PI-MAX4, allows for a 6x higher light throughput between the imaging intensifier and the detector in comparison to lens-coupled configurations.
As the high temperatures produced at the beginning of the plasma process mask the sharp emission lines, fast, reliable gating mechanisms can be implemented to remove unwanted masking. The PI-MAX4 offers precision gating to <500 picoseconds, ideal for removing unwanted spectral masking from heated samples.