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| Autori principali: | , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| Soggetti: | |
| Accesso online: | https://arxiv.org/abs/2508.20896 |
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| _version_ | 1866918132061306880 |
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| author | Xie, Zhixiong Lin, Xiao Zhu, Song Huang, Chunyu Luo, Yu Hu, Hao |
| author_facet | Xie, Zhixiong Lin, Xiao Zhu, Song Huang, Chunyu Luo, Yu Hu, Hao |
| contents | Cherenkov radiation enables high-energy particle identification through its velocity-dependent emission angle, yet conventional detectors fail to detect momenta beyond tens of GeV/c owing to the absence of natural materials with near-unity refractive indices. We overcome this limitation by demonstrating directional Cherenkov radiation from transverse-electric (TE) graphene plasmons, excited by a swift charged particle travelling above suspended monolayer graphene. Crucially, TE graphene plasmons exhibit a near-unity mode index, sustaining high sensitivity of the Cherenkov angle to relativistic velocities up to the TeV/c regime. The radiation further maintains exceptional robustness against particle-graphene separation changes, enabled by the TE mode's low transverse decay rate. This ultracompact platform is electrically tunable, allowing on-chip, reconfigurable detection of ultrahigh-energy particles and extending measurable momenta by two orders of magnitude beyond existing detectors. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_20896 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Transverse-electric Cherenkov Radiation for TeV-Scale Particle Detection Xie, Zhixiong Lin, Xiao Zhu, Song Huang, Chunyu Luo, Yu Hu, Hao Optics Cherenkov radiation enables high-energy particle identification through its velocity-dependent emission angle, yet conventional detectors fail to detect momenta beyond tens of GeV/c owing to the absence of natural materials with near-unity refractive indices. We overcome this limitation by demonstrating directional Cherenkov radiation from transverse-electric (TE) graphene plasmons, excited by a swift charged particle travelling above suspended monolayer graphene. Crucially, TE graphene plasmons exhibit a near-unity mode index, sustaining high sensitivity of the Cherenkov angle to relativistic velocities up to the TeV/c regime. The radiation further maintains exceptional robustness against particle-graphene separation changes, enabled by the TE mode's low transverse decay rate. This ultracompact platform is electrically tunable, allowing on-chip, reconfigurable detection of ultrahigh-energy particles and extending measurable momenta by two orders of magnitude beyond existing detectors. |
| title | Transverse-electric Cherenkov Radiation for TeV-Scale Particle Detection |
| topic | Optics |
| url | https://arxiv.org/abs/2508.20896 |