atomic hydrogen

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atomic hydrogen

[ə′täm·ik ′hī·drə·jən]
(chemistry)
Gaseous hydrogen whose molecules are dissociated into atoms.
References in periodicals archive ?
the classical Lagrangian and action of an electron in a hydrogen atom have the following standard forms:
The MRI team turns on one magnet to line up the hydrogen atoms and turns on the other to record the body's signal.
Hydrogen atoms readily absorbed much of the light generated by new, massive stars.
No one has ever observed hydrogen atoms in a glycoside hydrolase enzyme, and until now we did not know how the catalytic glutamic acid residue is protonated, said Kovalevsky.
However transmutation of oxygen atoms to hydrogen atoms (reaction) at temperatures below 80F, and with energy input of 0.
Even so, when the researchers tested their technique by imaging defects on their graphene sheets, they didn't expect to see individual hydrogen atoms.
The treatment area must be clear of oxygen; otherwise the newly produced hydrogen atoms will form water molecules.
If the hydrogen partial pressure in this remaining liquid exceeds a critical level, a gas molecule forms from the association of hydrogen atoms, creating porosity.
I'm fascinated by science's dogmatic determinism: the belief that any event or action, however complex--a Mozart concerto, a terrorist attack--arises from hydrogen atoms bashing together during the Big Bang.
Some fatty acids are saturated with hydrogen atoms.
Compositions for textile coatings (relates to Compositions containing (A) organopolysiloxanes, which have Si-bound hydroxy groups, (B) organopolysiloxanes, which have Si-bound hydrogen atoms, (C) platinum catalysts, (D) reinforcing fillers, (E) optionally non-reinforcing fillers, and (F) optionally inhibitors, which delay a platinum-catalysed reaction of Si-bound hydroxy groups and Si-bound hydrogen atoms at room temperature, with the proviso that the organopolysiloxanes (A) have viscosities of 500 to 100,000,000 mPa.
Researchers have directly imaged hydrogen atoms for the first time, two separate teams in Japan report online February 13 in Nature Materials and November 5 in Applied Physics Express.