Multichannel interference in nonperturbative multiphoton pair production by gamma rays colliding
The electron-positron pair production in the collision of two intense gamma lasers is studied beyond the dipole approximation. The complete electron/positron momentum spectrum obtained by three-dimensional computation shows directly the multiphoton pair production channels and provides a sensitive t...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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American Physical Society
2020-01-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.2.013020 |
| _version_ | 1797211595635425280 |
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| author | Zhaoyang Peng Huayu Hu Jianmin Yuan |
| author_facet | Zhaoyang Peng Huayu Hu Jianmin Yuan |
| author_sort | Zhaoyang Peng |
| collection | DOAJ |
| description | The electron-positron pair production in the collision of two intense gamma lasers is studied beyond the dipole approximation. The complete electron/positron momentum spectrum obtained by three-dimensional computation shows directly the multiphoton pair production channels and provides a sensitive test on the widely used concept of the effective mass. Nonperturbative features are identified in the dependence of the total yield on the field intensity. In particular, various breaks in the momentum rings are observed and prove to be a manifestation of a particle's energy gaps in the standing light wave induced by the Kapitza-Dirac scattering. A theoretical model of multilevel systems coupled by the Kapitza-Dirac scattering and pair production channels is established. Multichannel interference effects and pair production suppression are revealed in these systems. |
| first_indexed | 2024-04-24T10:28:59Z |
| format | Article |
| id | doaj.art-44a826efe58f47ffb1f33edf3a78ed38 |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:28:59Z |
| publishDate | 2020-01-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-44a826efe58f47ffb1f33edf3a78ed382024-04-12T16:48:22ZengAmerican Physical SocietyPhysical Review Research2643-15642020-01-012101302010.1103/PhysRevResearch.2.013020Multichannel interference in nonperturbative multiphoton pair production by gamma rays collidingZhaoyang PengHuayu HuJianmin YuanThe electron-positron pair production in the collision of two intense gamma lasers is studied beyond the dipole approximation. The complete electron/positron momentum spectrum obtained by three-dimensional computation shows directly the multiphoton pair production channels and provides a sensitive test on the widely used concept of the effective mass. Nonperturbative features are identified in the dependence of the total yield on the field intensity. In particular, various breaks in the momentum rings are observed and prove to be a manifestation of a particle's energy gaps in the standing light wave induced by the Kapitza-Dirac scattering. A theoretical model of multilevel systems coupled by the Kapitza-Dirac scattering and pair production channels is established. Multichannel interference effects and pair production suppression are revealed in these systems.http://doi.org/10.1103/PhysRevResearch.2.013020 |
| spellingShingle | Zhaoyang Peng Huayu Hu Jianmin Yuan Multichannel interference in nonperturbative multiphoton pair production by gamma rays colliding Physical Review Research |
| title | Multichannel interference in nonperturbative multiphoton pair production by gamma rays colliding |
| title_full | Multichannel interference in nonperturbative multiphoton pair production by gamma rays colliding |
| title_fullStr | Multichannel interference in nonperturbative multiphoton pair production by gamma rays colliding |
| title_full_unstemmed | Multichannel interference in nonperturbative multiphoton pair production by gamma rays colliding |
| title_short | Multichannel interference in nonperturbative multiphoton pair production by gamma rays colliding |
| title_sort | multichannel interference in nonperturbative multiphoton pair production by gamma rays colliding |
| url | http://doi.org/10.1103/PhysRevResearch.2.013020 |
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