Ammonia Formation from the Reactions of H Atoms with N Atoms Trapped in a Solid N 2 Matrix at 10--30 K
Abstract
The reactions of H atoms with N atoms trapped in an N2 matrix were studied. The N2 matrix, containing N atoms, was formed by depositing plasma-activated N2 gas over the surface of a cryocooler at 10-30 K. The deposited active nitrogen was reacted with H atoms by spraying plasma-activated hydrogen gas over the surface of the deposited sample. It was found that the H atoms diffuse inside the N2 matrix and react with N atoms to form NH3 molecules. The diffusion of H atoms in N2 and H2O matrices at 10-30 K and the absence of H subtraction from NH3 by H atoms were confirmed by an electron spin resonance experiment.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- April 1995
- DOI:
- 10.1086/175531
- Bibcode:
- 1995ApJ...443..363H
- Keywords:
-
- Ammonia;
- Hydrogen Atoms;
- Interstellar Chemistry;
- Nitrogen Atoms;
- Cosmic Dust;
- Cryogenic Cooling;
- Electron Paramagnetic Resonance;
- Matrix Materials;
- Atomic and Molecular Physics;
- ISM: DUST;
- EXTINCTION;
- MOLECULAR PROCESSES