𝔖 Bobbio Scriptorium
✦   LIBER   ✦

The rotational potential of NH3 in rare gases: a neutron scattering study

✍ Scribed by M. Prager; C.J. Carlile

Publisher
Elsevier Science
Year
1990
Tongue
English
Weight
633 KB
Volume
173
Category
Article
ISSN
0009-2614

No coin nor oath required. For personal study only.

✦ Synopsis

A small proportion ( ~2%) of the ammonia molecules matrix-isolated in argon at concentrations between 0.5% and 4% rotate almost freely about their symmetry axis at ?'= 5 K. Interstitial ammonia defects are proposed as possible sources. The remainder of the molecules are immobile on the timescale of our spectrometer ( > 15 peV). In a krypton matrix, no quantum-rotor transition could be observed at energies larger than 50 peV.

πŸ“œ SIMILAR VOLUMES

A multiphoton ionization study of nh3 ro
A multiphoton ionization study of nh3 rotational relaxation in pulsed NH3-He supersonic expansions
✍ Bruce D. Kay; A.J. Grimley πŸ“‚ Article πŸ“… 1986 πŸ› Elsevier Science 🌐 English βš– 421 KB

## Two-photon resonant three-photon ionization is employed to study the rotational relaxation of NH, in a pulsed supersonic expansion. The different NH, nuclear spin modifications (ortho-para) do not interconvert and relax at different rates. Para relaxation is more efficient than ortho relaxation

Inelastic neutron scattering study of th
Inelastic neutron scattering study of the low frequency vibrations in (CH3)3 NHCl
✍ M. Schlaak; M. Couzi; J.C. Lassegues; W. Drexel πŸ“‚ Article πŸ“… 1977 πŸ› Elsevier Science 🌐 English βš– 372 KB

The hydrogen bond stretching and bending vibrations in solid trimethylammonium chloride are distinguished from the lattice vibrations by comparing the inelastic neutron scattering spectra of the fully hydrogenated salt (CH3)sNHfCt-with the partially deuterated derivatives (CHs)sND+Cl-and (CDs)sNH+Cl