Details

Autor(en) / Beteiligte

• Maynard-Casely, Helen E
• Hester, James R
• Brand, Helen E A

Titel

Re-examining the crystal structure behaviour of nitrogen and methane

Ist Teil von

• IUCrJ, 2020-09, Vol.7 (Pt 5), p.844-851

Ort / Verlag

England: International Union of Crystallography

Erscheinungsjahr

2020

Link zum Volltext

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• In the light of NASA's mission, the solid-phase behaviour of methane and nitrogen has been re-examined and the thermal expansion coefficients of both materials have been determined over their whole solid temperature range for the first time. Neutron diffraction results indicate that the symmetric 3 space group is the best description for the α-nitrogen structure, rather than the long-accepted 2 3. Furthermore, it is also observed that β-nitrogen and methane phase I show changes in texture on warming, indicating grain growth.