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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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.trans [7.4 KB]
  Transitions for (4He)+ from the NIST dataset.
  - Number of transitions: 27
  - Max wavenumber: 426717.4 cm-1
- 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.pf [152.3 KB]
  Partition function for (4He)+ from the NIST dataset.
  - Max temperature: 6000 K
- 4He_p__NIST.adef.json [4.5 KB]
  Metadata definition file for (4He)+ from the NIST dataset.