ExoAtom

This is the development version of ExoAtom.

Search for species using terms such as Al, Cr+ or W+, or select an element from the periodic table below.

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Kurucz vs NIST coverage

View the full element-by-ionization-stage coverage matrix for both datasets.

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4He+: NIST Data Set version 20240901

4He II | mass = 4.002602 u

Max temperature: 6000 K

This data collection is critically evaluated and recommended for accuracy.

4He_p__NIST.adef.json [3.6 KB]

Metadata definition file for 4He+ from the NIST dataset.

4He_p__NIST.pf [152.3 KB]

Partition function for 4He+ from the NIST dataset.

  • Max temperature: 6000 K
4He_p__NIST.states [17.3 KB]

Energy levels for 4He+ from the NIST dataset.

  • Number of states: 148
  • Max energy: 437811.65594 cm-1
4He_p__NIST.trans [5.2 KB]

Transitions for 4He+ from the NIST dataset.

  • Number of transitions: 27
  • Max wavenumber: 426717.4 cm-1