dorsal/arxiv
View SchemaScattering of positronium from singly ionized helium and appearing resonances
| Authors | P K Biswas, H. M. Gupta |
|---|---|
| Categories | |
| ArXiv ID | physics/0106041 |
| URL | https://arxiv.org/abs/physics/0106041 |
Abstract
The coupled-channel model [Phys. Rev. A {\bf 59}, 363 (1999)] that yields converged low-energy phase shifts, and exact binding and resonance features in Ps-H [Phys. Rev. A {\bf 59}, 2058 (1999)] is applied to study Ps-He$^+$ scattering. Similar to PsH, resonances appear in the S-, P-, D-, etc partial waves in the Ps-He$^+$ system but in both the singlet and triplet scattering channels. The latter signifies possible Rydberg states of $e^+$ around singlet and triplet helium. The S-wave singlet resonance at 2.79 eV agrees to that predicted earlier in $e^+$-He entrance channel (energy difference 16.64 eV) at 19.27 eV [Chem. Phys. Lett. {\bf 262}, 460 (1996)].
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"abstract": "The coupled-channel model [Phys. Rev. A {\\bf 59}, 363 (1999)] that yields\nconverged low-energy phase shifts, and exact binding and resonance features in\nPs-H [Phys. Rev. A {\\bf 59}, 2058 (1999)] is applied to study Ps-He$^+$\nscattering. Similar to PsH, resonances appear in the S-, P-, D-, etc partial\nwaves in the Ps-He$^+$ system but in both the singlet and triplet scattering\nchannels. The latter signifies possible Rydberg states of $e^+$ around singlet\nand triplet helium. The S-wave singlet resonance at 2.79 eV agrees to that\npredicted earlier in $e^+$-He entrance channel (energy difference 16.64 eV) at\n19.27 eV [Chem. Phys. Lett. {\\bf 262}, 460 (1996)].",
"arxiv_id": "physics/0106041",
"authors": [
"P K Biswas",
"H. M. Gupta"
],
"categories": [
"physics.atom-ph"
],
"title": "Scattering of positronium from singly ionized helium and appearing resonances",
"url": "https://arxiv.org/abs/physics/0106041"
},
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"type": "Model",
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