Gamma-ray back emission from nanowire array irradiated by ultra-intense relativistic laser pulse
A highly energetic photon is emitted via nonlinear inverse Compton scattering after an electron undergoes scattering with an ultra-intense relativistic laser pulse. In the laser-nanostructured interaction, gamma photons are emitted in different directions due to different electron heating mechanisms...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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AIP Publishing LLC
2024-11-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/5.0229778 |
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| author | F. T. T. Houng S. Y. Hoh I. Yusuff K. A. Tanaka J. F. Ong |
| author_facet | F. T. T. Houng S. Y. Hoh I. Yusuff K. A. Tanaka J. F. Ong |
| author_sort | F. T. T. Houng |
| collection | DOAJ |
| description | A highly energetic photon is emitted via nonlinear inverse Compton scattering after an electron undergoes scattering with an ultra-intense relativistic laser pulse. In the laser-nanostructured interaction, gamma photons are emitted in different directions due to different electron heating mechanisms. However, the physics that leads to such gamma-photon emission directionality still requires further understanding. This paper shows that ∼53% of the photons emitted from the nanowires fall into the forward-directed cone, with ∼21% of the backward-emitted photons. Using the two-dimensional particle-in-cell simulations, we found that the backward-emitted photons are mainly ascribed to the j × B heating and reflux electrons. The direction of photon emission from the nanowire tip is in the direction of the ponderomotive force. Furthermore, we also demonstrate that the nanowire target attached to the supporting substrate helps to enhance forward photon emission and reduce emission from reflux electrons. Understanding the correlation between the laser heating mechanisms and the directionality of photon emission could provide insights into the generation of collimated gamma rays using nanowire targets for various applications. |
| format | Article |
| id | doaj-art-0d406e3aea5f433c861be165dfffabc4 |
| institution | Kabale University |
| issn | 2158-3226 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj-art-0d406e3aea5f433c861be165dfffabc42024-12-04T16:59:16ZengAIP Publishing LLCAIP Advances2158-32262024-11-011411115106115106-710.1063/5.0229778Gamma-ray back emission from nanowire array irradiated by ultra-intense relativistic laser pulseF. T. T. Houng0S. Y. Hoh1I. Yusuff2K. A. Tanaka3J. F. Ong4Department of Applied Physics, National University of Malaysia, Bangi 43600, Selangor, MalaysiaTsung-Dao Lee Institute and School of Particle and Astronomy, Shanghai Jiao Tong University, Shanghai 201210, ChinaDepartment of Applied Physics, National University of Malaysia, Bangi 43600, Selangor, MalaysiaExtreme Light Infrastructure–Nuclear Physics (ELI-NP), “Horia Hulubei” National R&D Institute for Physics and Nuclear Engineering (IFIN-HH), 30 Reactorului Street, Bucharest-Măgurele 077125, RomaniaExtreme Light Infrastructure–Nuclear Physics (ELI-NP), “Horia Hulubei” National R&D Institute for Physics and Nuclear Engineering (IFIN-HH), 30 Reactorului Street, Bucharest-Măgurele 077125, RomaniaA highly energetic photon is emitted via nonlinear inverse Compton scattering after an electron undergoes scattering with an ultra-intense relativistic laser pulse. In the laser-nanostructured interaction, gamma photons are emitted in different directions due to different electron heating mechanisms. However, the physics that leads to such gamma-photon emission directionality still requires further understanding. This paper shows that ∼53% of the photons emitted from the nanowires fall into the forward-directed cone, with ∼21% of the backward-emitted photons. Using the two-dimensional particle-in-cell simulations, we found that the backward-emitted photons are mainly ascribed to the j × B heating and reflux electrons. The direction of photon emission from the nanowire tip is in the direction of the ponderomotive force. Furthermore, we also demonstrate that the nanowire target attached to the supporting substrate helps to enhance forward photon emission and reduce emission from reflux electrons. Understanding the correlation between the laser heating mechanisms and the directionality of photon emission could provide insights into the generation of collimated gamma rays using nanowire targets for various applications.http://dx.doi.org/10.1063/5.0229778 |
| spellingShingle | F. T. T. Houng S. Y. Hoh I. Yusuff K. A. Tanaka J. F. Ong Gamma-ray back emission from nanowire array irradiated by ultra-intense relativistic laser pulse AIP Advances |
| title | Gamma-ray back emission from nanowire array irradiated by ultra-intense relativistic laser pulse |
| title_full | Gamma-ray back emission from nanowire array irradiated by ultra-intense relativistic laser pulse |
| title_fullStr | Gamma-ray back emission from nanowire array irradiated by ultra-intense relativistic laser pulse |
| title_full_unstemmed | Gamma-ray back emission from nanowire array irradiated by ultra-intense relativistic laser pulse |
| title_short | Gamma-ray back emission from nanowire array irradiated by ultra-intense relativistic laser pulse |
| title_sort | gamma ray back emission from nanowire array irradiated by ultra intense relativistic laser pulse |
| url | http://dx.doi.org/10.1063/5.0229778 |
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