title: Doubly charged negative atomic ions of hydrogen.
abstract: The existence of a relatively long-lived doubly charged negative atomic ion H(2-) (and D(2-)), isoelectronic with the lithium atom, has been demonstrated by mass spectrometry through a combined analysis of ion energy, velocity, and momentum. This species, formed in a hydrogen plasma, has a half-life of 2.3 x 10(-8) seconds before it spontaneously dissociates to produce H(-) ions.
authors.forename: M
authors.initials: M
authors.lastname: Anbar
authors.forename: R
authors.initials: R
authors.lastname: Schnitzer