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This is a Experimental Study study.

October 9, 2025Open Access

Positronium formation and threshold behavior in positron-sodium collisions at low energies

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Authors

NGNingning GaoSinopec (China)HHHui-Li HanBeijing Institute of Fashion Technology TSTing-Yun ShiChinese Academy of Sciences

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Implication

This analysis finds that positronium formation cross sections exceed ground-state values in excited sodium, indicating significant threshold behavior.

Key Points

Threshold behavior shows that positronium formation cross sections follow expected power-law dependences.
Cross sections for excited-state sodium are significantly larger, particularly at low energies, contributing to enhanced Ps formation.
Utilizing a hyperspherical coordinate method, this study provides a framework for evaluating positron-sodium collisions.
Results may resolve discrepancies between theory and experimental data, improving agreement for Ps cross sections.

Cite This Study

Gao et al. (2025) studied this question.

synapsesocial.com/papers/68e8439a9989581a2fd4e195 https://doi.org/10.48550/arxiv.2503.19400

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Implication

This analysis finds that positronium formation cross sections exceed ground-state values in excited sodium, indicating significant threshold behavior.

Positronium formation and threshold behavior in positron-sodium collisions at low energies

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Key Points

Cite This Study

Positronium formation and threshold behavior in positron-sodium collisions at low energies

Discussion

Member takes

Implication

Key Points

Cite This Study

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