Значения термина neutral helium на английском

The metastable component in the neutral helium beam was found to be less than 2%.

Proof of principle experiments of neutral helium beam production for alpha particle diagnostics was carried out on a test stand.

Using electric fields, they stripped the neutral helium atoms of their electrons, turning the gas into a glowing blue plasma.

We report the detection of the near-infrared triplet of neutral helium in the transiting warm Neptune-mass exoplanet HAT-P-11b by using ground-based, high-resolution observations.