TY - JOUR
T1 - Kinetic energy of Ps formed by Ore mechanism in Ar gas
AU - Sano, Yosuke
AU - Kino, Yasushi
AU - Oka, Toshitaka
AU - Sekine, Tsutomu
N1 - Publisher Copyright:
© Published under licence by IOP Publishing Ltd.
PY - 2015/6/15
Y1 - 2015/6/15
N2 - In order to investigate kinetic energy of positronium(Ps) formed by Ore mechanism, we performed positron annihilation age-momentum correlation (AMOC) measurements in Argas for 5.0 MPa and 7.5 MPa at room temperature. From the time dependence of Doppler broadening of para-Ps (p-Ps) self-annihilation gramma-ray component, we observed Ps slowing down process. Using a simple slowing down model, we obtained the initial kinetic energy of Ps formed by Ore mechanism and Ps-Armomentum transfer cross section. The initial kinetic energy was 3.9 eV which was higher than the kinetic energy of Ps formed at the upper limit of Ore gap. The momentum transfer cross section was 0.019 ± 0.010 nm2 in between 1 eV and 3.9 eV, and was close to the theoretical calculation.
AB - In order to investigate kinetic energy of positronium(Ps) formed by Ore mechanism, we performed positron annihilation age-momentum correlation (AMOC) measurements in Argas for 5.0 MPa and 7.5 MPa at room temperature. From the time dependence of Doppler broadening of para-Ps (p-Ps) self-annihilation gramma-ray component, we observed Ps slowing down process. Using a simple slowing down model, we obtained the initial kinetic energy of Ps formed by Ore mechanism and Ps-Armomentum transfer cross section. The initial kinetic energy was 3.9 eV which was higher than the kinetic energy of Ps formed at the upper limit of Ore gap. The momentum transfer cross section was 0.019 ± 0.010 nm2 in between 1 eV and 3.9 eV, and was close to the theoretical calculation.
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U2 - 10.1088/1742-6596/618/1/012010
DO - 10.1088/1742-6596/618/1/012010
M3 - Conference article
AN - SCOPUS:84939248576
VL - 618
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
SN - 1742-6588
IS - 1
M1 - 012010
T2 - 11th International Workshop on Positron and Positronium Chemistry, PPC 2014
Y2 - 9 November 2014 through 14 November 2014
ER -