Positronium in binary mixture n-nonadecane+n-tricosane at high pressure

Autor:	K. Standzikowski, Jan Wawryszczuk, Tomasz Goworek, Bożena Zgardzińska
Rok vydání:	2011
Předmět:	Nonadecane Relaxation (NMR) General Physics and Astronomy Binary number Molecular physics Spectral line Positronium Intensity (physics) chemistry.chemical_compound chemistry Phase (matter) Physical and Theoretical Chemistry Atomic physics Order of magnitude
Zdroj:	Chemical Physics. 379:116-122
ISSN:	0301-0104
DOI:	10.1016/j.chemphys.2010.12.001
Popis:	Positron annihilation lifetime spectra (PALS) in binary mixture of alkanes were measured as a function of pressure. It was found that after rapid transition from rotator to rigid phase the intensity of positronium formation is not stable in time; its relaxation contains two components differing by an order of magnitude. The appearance of transient rotator phase, analogous to that observed in temperature dependences for the same mixture was not observed. Two-stage increase of spectrum parameters at crossing the rigid–rotator transition by pressure reduction can be an indication of the appearance of an additional phase preceding the rotator.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::66ec67608ba29328775916c8778d9b5f https://doi.org/10.1016/j.chemphys.2010.12.001 Zobrazit plný text záznamu Full Text from ScienceDirect