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High Resolution Atomic Spectroscopy

Summary:

Accurate measurements of atomic wavelengths, energy levels, oscillator strengths and isotope and hyperfine structure using diffraction grating spectrographs, Fourier transform spectrometers.

Description:

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

energy levels of iron-group element.


Major Accomplishments:

 



Grating Spectroscopy

Several High-Resolution Instruments, including:
10.7 m Normal Incidence Spectrograph
10.7 m Grazing Incidence Spectrograph
Czerny-Turner Spectrograph

For technical questions contact:

email: gillian.nave@nist.gov

 

 

 

 



Fourier Transform Spectrometers

2-m infrared/visible/UV Fourier transform spectrometer

vacuum ultraviolet Fourier transform spectrometer


For technical questions contact:

email: gillian.nave@nist.gov

 

End Date:

ongoing

Lead Organizational Unit:

physlab
Contact

Technical inquiries: yuri.ralchenko@nist.gov
National Institute of Standards and Technology
Bldg. 221, Rm. A143
100 Bureau Drive, Stop 8422
Gaithersburg, MD 20899-8422



10.7 m Normal Incidence Spectrograph

 

 

Fourier Transform Spectrometer