Helium is concentrated in stars, where it is synthesized from hydrogen by nuclear fusion......
The nucleus of every helium atom contains two protons, but, as is the case with all elements, isotopes of helium exist. The known isotopes of helium contain from one to six neutrons, so their mass numbers range from three to eight. Of these six isotopes, only those with mass numbers of three (helium-3, or 3He) and four (helium-4, or 4He) are stable; all the others are radioactive, decaying very rapidly into other substances.
As Anderson clearly stated, Neutrons neutrons and neutrons....
He added neutrons to the hydrogen to create an isotope...deuterium....
However helium with two protons and neutrons are also possible...
As i start thinking..is shooting a photon from the gas also some kind of extracting?