Smith–Purcell radiation in the terahertz regime using charged particle beams from laser–matter interactions
| Autor: | Torsten May, A. Gopal, A. Woldegeorgis, S. Herzer, Gerhard G. Paulus, Wolfgang Ziegler, Pushkar Singh |
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| Rok vydání: | 2016 |
| Předmět: |
Physics
Proton Terahertz radiation Radiation Condensed Matter Physics Laser 01 natural sciences Atomic and Molecular Physics and Optics Charged particle 010305 fluids & plasmas law.invention Particle acceleration law 0103 physical sciences Physics::Accelerator Physics Electrical and Electronic Engineering Atomic physics 010306 general physics Particle beam Charged particle beam |
| Zdroj: | Laser and Particle Beams. 34:187-191 |
| ISSN: | 1469-803X 0263-0346 |
| Popis: | We report on the experimental observation of Smith–Purcell (SP) radiation generation by charged particle beam from laser–matter interactions. High-power laser pulses were focused onto a thin metal foil target to generate proton beams with energies up to 1.7 MeV via the target normal sheath acceleration (TNSA) process. The particle beam from the TNSA process was sent close to a periodic structure to generate SP radiation. Sub-μJ terahertz pulses were recorded using a pyroelectric detector. Simultaneous measurement of the ion spectra allowed us to estimate the power of the emitted radiation and compare it with the experimental results. The distance between the grating and the particle beam was varied and its effect on the emitted radiation was studied. |
| Databáze: | OpenAIRE |
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