Existence of H2−, a relatively long-lived doubly charged negative atomic hydrogen ion
- 15 March 1976
- journal article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 64 (6) , 2466-2480
- https://doi.org/10.1063/1.432549
Abstract
Doubly charged negative hydrogen ions H2− and D2− have been indirectly observed in a tandem mass spectrometer using a hollow cathode duoplasmatron ion source. The half-life of these doubly charged ions, determined in a number of drift time experiments, is 23±4 nsec. The existence of these ions is concluded from a velocity, momentum, and energy analysis of hydride ions produced in the autodetachment process: X2−→X−+e (X=H,D).Keywords
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