Details

Autor(en) / Beteiligte

• Dmitriev, Yu. A.

Titel

Orientation Dynamics of the Methyl Radical and Matrix Molecules in Solid Methane, CH4, and CD4 at Cryogenic Temperatures

Ist Teil von

• Optics and spectroscopy, 2021-11, Vol.129 (11), p.1219-1225

Ort / Verlag

Moscow: Pleiades Publishing

Erscheinungsjahr

2021

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The temperature dependences of the relative populations of the rotational levels of the methyl radical CH 3 in A - and E -symmetric states for the radicals stabilized in solid methane CH 4 in the temperature range 1.4–4.2 K and in solid CO in the range 6–33 K were determined by the method of electron paramagnetic resonance. The features of the orientation movement of radicals at cryogenic temperatures have been determined. The analysis performed has shown that the partial orientation of near-order molecules is preserved in solid methane CH 4 and CD 4 even in the orientationally disordered phase and a correlated reorientation of molecules occurs in low-temperature phases with total or partial orientation ordering.