Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

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 for spectra Ga I through Ga VII, Ga XXIII through Ga XXVI, and Ga XXX. For Li-like Ga XXIX through H-like Ga XXXI, theoretical data on energy levels and line wavelengths are compiled. For Ga I, Ga II, and Ga III we include radiative probabilities of electric-dipole transitions where available. For Ga XV through Ga XX, Ga XXIII through Ga XXVI, and Ga XXX, radiative probabilities of magnetic-dipole transitions are included. The ground state configuration and term and a value of ionization energy is included for each ion.
J. Phys. & Chem. Ref. Data (JPCRD) -


compilation, critically evaluated data, emission spectra, energy levels, gallium, ionization potentials, multiply charged ions, observed spectral lines, transition probabilities


Shirai, T. , Reader, J. , Kramida, A. and Sugar, J. (2021), Spectral Data for Gallium: Ga I through Ga XXXI, J. Phys. & Chem. Ref. Data (JPCRD), National Institute of Standards and Technology, Gaithersburg, MD (Accessed April 24, 2024)
Created October 12, 2021