@inproceedings{6c2ffa290bed4069adb4dfc647ab1d06,
title = "Positron annihilation lifetime measurement in supercritical fluid of N 2O",
abstract = "We measured positron annihilation lifetime (PAL) spectra in N2O in the range from 3 nm-3 to 13 nm-3, focusing on density dependence of PAL in the medium including the supercritical fluid phase (critical temperature Tc = 309.6 K, critical pressure Pc = 7.24 MPa, critical density ρc = 6.18 nm-3). The PAL spectra were resolved into four components using the PATFIT code. We found the formation of two types of o-Ps. Namely, in addition to the longest lifetime component attributed to the o-Ps formation through the process explained by the Ore model, the third lifetime component (the second longest) was found in the density larger than 4.5 nm-3, while the former was observed continuously from the gas phase to the liquid phase.",
keywords = "Nitrous Oxide, Ore Model, Positron Annihilation Lifetime, Positronium, Spur Model, Supercritical Fluid",
author = "Kazushi Funakoshi and Yasushi Kino and Tsutomu Sekine and Hiroshi Kudo and Yasuo Ito and Takenori Suzuki",
year = "2004",
month = jan,
day = "1",
language = "English",
isbn = "9780878499366",
series = "Materials Science Forum",
publisher = "Trans Tech Publications Ltd",
pages = "295--297",
editor = "Toshio Hyodo and Haruo Saito and Yoshinori Kobayashi and Yasuyuki Nagashima",
booktitle = "Positron Annihilation",
note = "Positron Annihilation: Proceedings of the 13th International Conference on Positron Annihilation, ICPA-13 ; Conference date: 07-09-2003 Through 12-09-2003",
}