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Yinren, Shou
초강력 레이저과학 연구단
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Brilliant femtosecond-laser-driven hard X-ray flashes from carbon nanotube plasma

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Title
Brilliant femtosecond-laser-driven hard X-ray flashes from carbon nanotube plasma
Author(s)
Yinren Shou; Wang, Pengjie; Seong Geun Lee; Yong Joo Rhee; Hwang Woon Lee; Jin Woo Yoon; Jae Hee Sung; Seong Ku Lee; Pan, Zhuo; Kong, Defeng; Mei, Zhusong; Liu, Jianbo; Xu, Shirui; Deng, Zhigang; Zhou, Weimin; Tajima, Toshika; Il Woo Choi; Yan, Xueqing; Chang Hee Nam; Ma, Wenjun
Publication Date
2023-02
Journal
Nature Photonics, v.17, no.2, pp.137 - 142
Publisher
Nature Research
Abstract
Brilliant X- and γ-ray sources with ultrashort duration are widely pursued in fundamental science, industry and medicine. Compact femtosecond X-ray sources based on relativistic electrons accelerated by the laser wakefield in gases have performed outstandingly. Their energy conversion efficiency from laser to hard X-ray photons (>10 keV) is, however, limited to 10−7–10−5. Here we report the high-yield generation of hard X-ray flashes from targets made of carbon nanotubes, instead of gases. Orders-of-magnitude more electrons, accelerated to relativistic energy, are strongly wiggled inside a micrometre-scale, near-critical density plasma formed by the nanotube target, emitting 1012 high-energy photons per shot. The yield of hard X-rays exceeds 1010 photons per joule, corresponding to an unprecedented efficiency of 10−3. Irradiated by upcoming 10-PW-class lasers, such targets can deliver 10-MeV photons with brightness outperforming existing sources by two orders of magnitude. © 2022, The Author(s), under exclusive licence to Springer Nature Limited.
URI
https://pr.ibs.re.kr/handle/8788114/13005
DOI
10.1038/s41566-022-01114-8
ISSN
1749-4885
Appears in Collections:
Center for Relativistic Laser Science(초강력 레이저과학 연구단) > 1. Journal Papers (저널논문)
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