Re-examining the crystal structure behaviour of nitrogen and methane

In the light of NASA's New Horizons 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 tha...

Full description

Bibliographic Details
Main Authors:	Helen E. Maynard-Casely, James R. Hester, Helen E. A. Brand
Format:	Article
Language:	English
Published:	International Union of Crystallography 2020-09-01
Series:	IUCrJ
Subjects:	molecular crystals pluto thermal expansion phase transitions solid properties methane simple crystal structures
Online Access:	http://scripts.iucr.org/cgi-bin/paper?S2052252520007460

id	doaj-35de9645bef54674a3556778640af310
record_format	Article
spelling	doaj-35de9645bef54674a3556778640af3102020-11-25T03:19:57ZengInternational Union of CrystallographyIUCrJ2052-25252020-09-017584485110.1107/S2052252520007460zx5020Re-examining the crystal structure behaviour of nitrogen and methaneHelen E. Maynard-Casely0James R. Hester1Helen E. A. Brand2Australian Nuclear Science and Technology Organisation, Locked Bag 2001, Kirrawee DC 2232 AustraliaAustralian Nuclear Science and Technology Organisation, Locked Bag 2001, Kirrawee DC 2232 AustraliaAustralian Synchrotron, ANSTO, 800 Blackburn Road, Clayton 3168, AustraliaIn the light of NASA's New Horizons 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 Pa3 space group is the best description for the α-nitrogen structure, rather than the long-accepted P213. Furthermore, it is also observed that β-nitrogen and methane phase I show changes in texture on warming, indicating grain growth.http://scripts.iucr.org/cgi-bin/paper?S2052252520007460molecular crystalsplutothermal expansionphase transitionssolid propertiesmethanesimple crystal structures
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Helen E. Maynard-Casely James R. Hester Helen E. A. Brand
spellingShingle	Helen E. Maynard-Casely James R. Hester Helen E. A. Brand Re-examining the crystal structure behaviour of nitrogen and methane IUCrJ molecular crystals pluto thermal expansion phase transitions solid properties methane simple crystal structures
author_facet	Helen E. Maynard-Casely James R. Hester Helen E. A. Brand
author_sort	Helen E. Maynard-Casely
title	Re-examining the crystal structure behaviour of nitrogen and methane
title_short	Re-examining the crystal structure behaviour of nitrogen and methane
title_full	Re-examining the crystal structure behaviour of nitrogen and methane
title_fullStr	Re-examining the crystal structure behaviour of nitrogen and methane
title_full_unstemmed	Re-examining the crystal structure behaviour of nitrogen and methane
title_sort	re-examining the crystal structure behaviour of nitrogen and methane
publisher	International Union of Crystallography
series	IUCrJ
issn	2052-2525
publishDate	2020-09-01
description	In the light of NASA's New Horizons 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 Pa3 space group is the best description for the α-nitrogen structure, rather than the long-accepted P213. Furthermore, it is also observed that β-nitrogen and methane phase I show changes in texture on warming, indicating grain growth.
topic	molecular crystals pluto thermal expansion phase transitions solid properties methane simple crystal structures
url	http://scripts.iucr.org/cgi-bin/paper?S2052252520007460
work_keys_str_mv	AT helenemaynardcasely reexaminingthecrystalstructurebehaviourofnitrogenandmethane AT jamesrhester reexaminingthecrystalstructurebehaviourofnitrogenandmethane AT heleneabrand reexaminingthecrystalstructurebehaviourofnitrogenandmethane
_version_	1724620062425350144

Re-examining the crystal structure behaviour of nitrogen and methane

Similar Items