TY - JOUR
T1 - Near-threshold production of antihydrogen positive ion in positronium-antihydrogen collision
AU - Yamashita, Takuma
AU - Kino, Yasushi
AU - Hiyama, Emiko
AU - Jonsell, Svante
AU - Froelich, Piotr
N1 - Funding Information:
We would like to thank Dr. Konrad Piszczatowski (a post-doctoral visitor at the Department of Chemistry, Uppsala University from the Quantum Chemistry Laboratory, Warsaw University) for his contribution to code development. TY would like to thank Special Postdoctoral Researcher (SPDR) programme in RIKEN and JSPS KAKENHI Grant No. JP20K14381, YK would like to thank JSPS KAKENHI Grant No. 17K05592 and 18H05461, SJ would like to thank the Swedish Research Council (VR) for financial supports. The computation was conducted on the supercomputers ITO at Kyushu University and HOKUSAI at RIKEN. PF would like to thank the Tohoku University for the generous support of the research visit of TY to Uppsala University.
Publisher Copyright:
© 2021 The Author(s). Published by IOP Publishing Ltd on behalf of the Institute of Physics and Deutsche Physikalische Gesellschaft
PY - 2021/1
Y1 - 2021/1
N2 - Near-threshold production of antihydrogen ion (H¯+) in positronium-antihydrogen collisions is predicted by a rigorous four-body scattering calculation. The convergence of the cross sections for the rearrangement and for all competing reactions (elastic scattering, de/excitation and de/polarization of positronium) is carefully examined against partial waves. The multi-channel scattering solutions are composed of functions that diagonalize the four-body Hamiltonian, and scattering functions that satisfy the correct asymptotic boundary conditions. The production rates of H¯+ show large discrepancies compared to more approximate calculations.
AB - Near-threshold production of antihydrogen ion (H¯+) in positronium-antihydrogen collisions is predicted by a rigorous four-body scattering calculation. The convergence of the cross sections for the rearrangement and for all competing reactions (elastic scattering, de/excitation and de/polarization of positronium) is carefully examined against partial waves. The multi-channel scattering solutions are composed of functions that diagonalize the four-body Hamiltonian, and scattering functions that satisfy the correct asymptotic boundary conditions. The production rates of H¯+ show large discrepancies compared to more approximate calculations.
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U2 - 10.1088/1367-2630/abd682
DO - 10.1088/1367-2630/abd682
M3 - Article
AN - SCOPUS:85100861026
SN - 1367-2630
VL - 23
JO - New Journal of Physics
JF - New Journal of Physics
IS - 1
M1 - 012001
ER -