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- Title
Experimental Study on Positronium Detection under Millimeter Waves Generated from Plasma Wakefield Acceleration.
- Authors
Min, Sun-Hong; Park, Chawon; Lee, Kyo Chul; Lee, Yong Jin; Sattorov, Matlabjon; Kim, Seonmyeong; Hong, Dongpyo; Park, Gun-Sik
- Abstract
Positronium (Ps) is an unstable system created by the temporary combination of electrons and negative electrons, and Ps generation technology under resonance conditions at millimeter waves is emerging as a new research topic. In general, Ps can be observed when an unstable separate state remains after electron and positron pair annihilation, as in positron emission tomography (PET). However, in this study, a plasma wakefield accelerator based on vacuum electronics devices (VEDs) was designed in the ponderomotive force generating electrons and positrons simultaneously using annular relativistic electron beams. It can induce Cherenkov radiation from beam–wave interaction by using dielectric materials. According to the size of dielectric materials, the frequency of oscillation is approximately 203 GHz at the range of millimeter waves. At this time, the output power is about 109 watts-levels. Meanwhile, modes of millimeter waves polarized by a three-stepped axicon lens are used to apply the photoconversion technology. Thus, it is possible to confirm light emission in the form of a light-converted Bessel beam.
- Subjects
WAKEFIELD (England); POSITRONIUM; MILLIMETER waves; PLASMA acceleration; ELECTRON beams; CHERENKOV radiation; RELATIVISTIC electron beams; POSITRON emission tomography
- Publication
Electronics (2079-9292), 2022, Vol 11, Issue 19, p3178
- ISSN
2079-9292
- Publication type
Article
- DOI
10.3390/electronics11193178