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.

He: NIST Data Set version 20240901

He I | mass = 4.002602 u

Max temperature: 6000 K

This data collection is critically evaluated and recommended for accuracy.

He__NIST.adef.json [3.4 KB]

Metadata definition file for He from the NIST dataset.

He__NIST.pf [152.3 KB]

Partition function for He from the NIST dataset.

  • Max temperature: 6000 K
He__NIST.states [98.7 KB]

Energy levels for He from the NIST dataset.

  • Number of states: 842
  • Max energy: 516775.0 cm-1
He__NIST.trans [88.8 KB]

Transitions for He from the NIST dataset.

  • Number of transitions: 91
  • Max wavenumber: 197208.0 cm-1