Resonances in positron scattering on a supercritical nucleus and spontaneous production of $e^+e^-$ pairs
| العنوان: | Resonances in positron scattering on a supercritical nucleus and spontaneous production of $e^+e^-$ pairs |
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| المؤلفون: | Bruno Machet, S. I. Godunov, M. I. Vysotsky |
| المساهمون: | Laboratoire de Physique Théorique et Hautes Energies (LPTHE), Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) |
| المصدر: | EPJ Web Conf. 20th International Seminar on High Energy Physics 20th International Seminar on High Energy Physics, May 2018, Valday, Russia. pp.02018, ⟨10.1051/epjconf/201819102018⟩ EPJ Web of Conferences, Vol 191, p 02018 (2018) |
| بيانات النشر: | HAL CCSD, 2018. |
| سنة النشر: | 2018 |
| مصطلحات موضوعية: | Field (physics), QC1-999, Electron, 01 natural sciences, electron: pair production, symbols.namesake, Positron, Quantum mechanics, 0103 physical sciences, Dirac equation, 010306 general physics, 010303 astronomy & astrophysics, Physics, Scattering, nucleus: target, scattering, 3. Good health, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], symbols, Physics::Accelerator Physics, positron, Production (computer science), Coulomb, Electric potential, Energy (signal processing) |
| الوصف: | We re-examine the physics of supercritical nuclei, specially focusing on the scattering phase $$\delta _{\varkappa }$$ and its dependence on the energy $$\varepsilon $$ of the diving electronic level, for which we give both exact and approximate formulas. The Coulomb potential $$Z\alpha /r$$ is rounded to the constant $$Z\alpha /R$$ for $$r < R$$ . We confirm the resonant behavior of $$\delta _{\varkappa }$$ that we investigate in detail. In addition to solving the Dirac equation for an electron, we solve it for a positron, in the field of the same nucleus. This clarifies the interpretation of the resonances. Our results are compared with claims made in previous works. |
| اللغة: | English |
| DOI: | 10.1051/epjconf/201819102018⟩ |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4d77ec9608e97ae4810275d4b73b6fb3 https://hal.archives-ouvertes.fr/hal-01937547 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....4d77ec9608e97ae4810275d4b73b6fb3 |
| قاعدة البيانات: | OpenAIRE |
| DOI: | 10.1051/epjconf/201819102018⟩ |
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