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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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.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.adef.json [4.3 KB]
  Metadata definition file for He from the NIST dataset.
- He__NIST.trans [120.7 KB]
  Transitions for He from the NIST dataset.
  - Number of transitions: 91
  - Max wavenumber: 197208.0 cm-1