Formation of the Positronium Antihydride Molecules ($$\bar{\textrm{H}}\textrm{Ps}$$) in Low Energy, 5-Body Collisions of Antihydrogen Ion $$\bar{\textrm{H}}^+$$ with Positronium Atoms Ps

Abstract In this paper we present the first pilot calculation of the elastic and inelastic cross sections for the 5-body scattering of antihydrogen ions with positronium atoms. These cross sections have not been calculated before and are not known experimentally. In particular, we focus on the collisional rearrangement reactions $$\bar{{ \mathrm H}}^+ + \textrm{Ps} \rightarrow {\bar{\textrm{H}}}\textrm{Ps} +{\mathrm{e^+}}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msup> <mml:mover> <mml:mrow> <mml:mi>H</mml:mi> </mml:mrow> <mml:mrow> <mml:mo>¯</mml:mo> </mml:mrow> </mml:mover> <mml:mo>+</mml:mo> </mml:msup> <mml:mo>+</mml:mo> <mml:mtext>Ps</mml:mtext> <mml:mo>→</mml:mo> <mml:mover> <mml:mrow> <mml:mtext>H</mml:mtext> </mml:mrow> <mml:mrow> <mml:mo>¯</mml:mo> </mml:mrow> </mml:mover> <mml:mtext>Ps</mml:mtext> <mml:mo>+</mml:mo> <mml:msup> <mml:mi>e</mml:mi> <mml:mo>+</mml:mo> </mml:msup> </mml:mrow> </mml:math> which deplete the $$\bar{\textrm{H}}^+$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mover> <mml:mrow> <mml:mtext>H</mml:mtext> </mml:mrow> <mml:mrow> <mml:mo>¯</mml:mo> </mml:mrow> </mml:mover> <mml:mo>+</mml:mo> </mml:msup> </mml:math> ions and result in stable atomcules $$\bar{\textrm{H}}\textrm{Ps}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mover> <mml:mrow> <mml:mtext>H</mml:mtext> </mml:mrow> <mml:mrow> <mml:mo>¯</mml:mo> </mml:mrow> </mml:mover> <mml:mtext>Ps</mml:mtext> </mml:mrow> </mml:math> . To better understand the mechanism of this rearrangement, we study the 3-dimensional, angle resolved positron densities of the 3- and 4-body fragments in the initial and final states of the rearrangement collision.

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Journal
Few-Body Systems
Published
2024-08-19
DOI
https://doi.org/10.1007/s00601-024-01952-y
Primary Topic
Atomic and Molecular Physics
Type
article
Field-Weighted Citation Impact
0.00

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article

Formation of the Positronium Antihydride Molecules ($$\bar{\textrm{H}}\textrm{Ps}$$) in Low Energy, 5-Body Collisions of Antihydrogen Ion $$\bar{\textrm{H}}^+$$ with Positronium Atoms Ps

Takuma Yamashita, Emiko Hiyama, S. Jonsell, Piotr Froelich et al.
Few-Body Systems
Atomic and Molecular Physics
article

Formation of the Positronium Antihydride Molecules ($$\bar{\textrm{H}}\textrm{Ps}$$) in Low Energy, 5-Body Collisions of Antihydrogen Ion $$\bar{\textrm{H}}^+$$ with Positronium Atoms Ps

Takuma Yamashita, Emiko Hiyama, S. Jonsell, Piotr Froelich, Yasushi Kino
article en

Abstract

Abstract In this paper we present the first pilot calculation of the elastic and inelastic cross sections for the 5-body scattering of antihydrogen ions with positronium atoms. These cross sections have not been calculated before and are not known experimentally. In particular, we focus on the collisional rearrangement reactions $$\bar{{ \mathrm H}}^+ + \textrm{Ps} \rightarrow {\bar{\textrm{H}}}\textrm{Ps} +{\mathrm{e^+}}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msup> <mml:mover> <mml:mrow> <mml:mi>H</mml:mi> </mml:mrow> <mml:mrow> <mml:mo>¯</mml:mo> </mml:mrow> </mml:mover> <mml:mo>+</mml:mo> </mml:msup> <mml:mo>+</mml:mo> <mml:mtext>Ps</mml:mtext> <mml:mo>→</mml:mo> <mml:mover> <mml:mrow> <mml:mtext>H</mml:mtext> </mml:mrow> <mml:mrow> <mml:mo>¯</mml:mo> </mml:mrow> </mml:mover> <mml:mtext>Ps</mml:mtext> <mml:mo>+</mml:mo> <mml:msup> <mml:mi>e</mml:mi> <mml:mo>+</mml:mo> </mml:msup> </mml:mrow> </mml:math> which deplete the $$\bar{\textrm{H}}^+$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mover> <mml:mrow> <mml:mtext>H</mml:mtext> </mml:mrow> <mml:mrow> <mml:mo>¯</mml:mo> </mml:mrow> </mml:mover> <mml:mo>+</mml:mo> </mml:msup> </mml:math> ions and result in stable atomcules $$\bar{\textrm{H}}\textrm{Ps}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mover> <mml:mrow> <mml:mtext>H</mml:mtext> </mml:mrow> <mml:mrow> <mml:mo>¯</mml:mo> </mml:mrow> </mml:mover> <mml:mtext>Ps</mml:mtext> </mml:mrow> </mml:math> . To better understand the mechanism of this rearrangement, we study the 3-dimensional, angle resolved positron densities of the 3- and 4-body fragments in the initial and final states of the rearrangement collision.

Few-Body SystemsVol. 65(3)
Uppsala University (SE), Stockholm University (SE), Tohoku University (JP), RIKEN Nishina Center (JP)
Uppsala Universitet, Japan Society for the Promotion of Science
Affordable and clean energy
Openalex Percentile: Top 89%
Atomic and Molecular Physics
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