11. Another minor constituent of the Ganymedian atmosphere is atomic hydrogen . 12. Currently, he is working with Daniel Kleppner on research concerning ultra cooled atomic hydrogen . 13. Maser oscillations rely on the stimulated emission between two hyperfine energy levels of atomic hydrogen . 14. They operate at the 1420 MHz frequency corresponding to an absorption line in atomic hydrogen . 15. At, atomic hydrogen reacts with liquid ozone to form a hydrogen superoxide radical, which dimerizes: 16. Atomic hydrogen determines the frequency of hydrogen masers which are used as precise frequency standards.17. Atomic hydrogen converts trimethylborane on a graphene monolayer surface to dimethylborane which dimerises to tetramethyldiborane.18. Atomic hydrogen is much more reactive than molecular hydrogen.19. Other arc welding processes include atomic hydrogen welding, electroslag welding, electrogas welding, and stud arc welding. 20. The universal emergence of atomic hydrogen first occurred during the species denoted by the symbol H +.
