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Alexander Kramida (Fed)

Alexander is interested in the analysis of spectra of neutral and ionized atoms and is active in the critical compilation of atomic spectral data for NIST's atomic spectroscopy databases. He is currently involved in evaluation of energy levels, wavelengths, and transition probabilities in several spectra of atoms and atomic ions and critical evaluation of experimental and theoretical ionization energies of all stages of ionization of all chemical elements. Utilizing his knowledge of computer programming, he assists in support of the on-line databases on atomic spectra.

Publication List


New analysis of Fe VII

Alexander Kramida, A.N. Ryabtsev, Peter R. Young
New spectrograms of multiply ionized iron have been recorded and analyzed, targeting the Fe VII spectrum. As a result, several previously unknown spectral lines

Spectral Data for Gallium: Ga I through Ga XXXI

T Shirai, Joseph Reader, Alexander Kramida, J Sugar
The energy levels and spectral lines of gallium atom in all stages of ionization have been compiled. Experimental data on spectral lines and energy levels exist

Development of NIST Atomic Databases and OnlineTools

Yuri Ralchenko, Alexander Kramida
Over the last 25 years, the atomic standard reference databases and online tools developed at the National Institute of Standards and Technology (NIST) provide

Spectrum of Ni V in the Vacuum Ultraviolet

Jacob W. Ward, A J. Raassen, Alexander Kramida, Gillian Nave
This work presents 97 remeasured Fe V wavelengths (1200 Å to 1600 Å) and 123 remeasured Ni V wavelengths (1200 Å to 1400 Å) with uncertainties of approximately
Created October 9, 2019, Updated June 15, 2021