Accurate measurements of atomic wavelengths, energy levels, oscillator strengths and isotope and hyperfine structure using diffraction grating spectrographs, Fourier transform spectrometers.
For many decades, the Atomic Spectroscopy Group at NIST has measured atomic
data of vital use to astronomy and other fields using high resolution spectrometers that are
found in few other places in the world. These include a 2-m path difference Fourier transfer (FT)
spectrometer, a vacuum ultraviolet FT spectrometer, a 10.7-m normal incidence spectrometer,
a 10.7-m normal incidence spectrograph and a 10-m grazing incident spectrograph.
Recent work has focused around two main themes: the measurement of wavelength calibration
standards for astronomical telescopes, and the measurement and analysis of wavelengths and
Lead Organizational Unit:physlab
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