Study of electron acceleration and x-ray radiation as a function of plasma density in capillary-guided laser wakefield accelerators
(2013) In Physics of Plasmas 20(8).- Abstract
- Laser wakefield electron acceleration in the blow-out regime and the associated betatron X-ray radiation were investigated experimentally as a function of the plasma density in a configuration where the laser is guided. Dielectric capillary tubes were employed to assist the laser keeping self-focused over a long distance by collecting the laser energy around its central focal spot. With a 40 fs, 16 TW pulsed laser, electron bunches with tens of pC charge were measured to be accelerated to an energy up to 300 MeV, accompanied by X-ray emission with a peak brightness of the order of 10 21 ph/s/mm(2)/mrad(2)/0.1%BW. Electron trapping and acceleration were studied using the emitted X-ray beam distribution to map the acceleration process; the... (More)
- Laser wakefield electron acceleration in the blow-out regime and the associated betatron X-ray radiation were investigated experimentally as a function of the plasma density in a configuration where the laser is guided. Dielectric capillary tubes were employed to assist the laser keeping self-focused over a long distance by collecting the laser energy around its central focal spot. With a 40 fs, 16 TW pulsed laser, electron bunches with tens of pC charge were measured to be accelerated to an energy up to 300 MeV, accompanied by X-ray emission with a peak brightness of the order of 10 21 ph/s/mm(2)/mrad(2)/0.1%BW. Electron trapping and acceleration were studied using the emitted X-ray beam distribution to map the acceleration process; the number of betatron oscillations performed by the electrons was inferred from the correlation between measured X-ray fluence and beam charge. A study of the stability of electron and X-ray generation suggests that the fluctuation of X-ray emission can be reduced by stabilizing the beam charge. The experimental results are in good agreement with 3D particle-in-cell (PIC) simulation. (C) 2013 AIP Publishing LLC. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/4062497
- author
- organization
- publishing date
- 2013
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physics of Plasmas
- volume
- 20
- issue
- 8
- article number
- 083106
- publisher
- American Institute of Physics (AIP)
- external identifiers
-
- wos:000323946800082
- ISSN
- 1070-664X
- DOI
- 10.1063/1.4817747
- language
- English
- LU publication?
- yes
- id
- d91cd1b3-eabb-45b6-9474-536e19016f73 (old id 4062497)
- date added to LUP
- 2016-04-01 09:51:15
- date last changed
- 2018-11-21 19:37:35
@article{d91cd1b3-eabb-45b6-9474-536e19016f73, abstract = {{Laser wakefield electron acceleration in the blow-out regime and the associated betatron X-ray radiation were investigated experimentally as a function of the plasma density in a configuration where the laser is guided. Dielectric capillary tubes were employed to assist the laser keeping self-focused over a long distance by collecting the laser energy around its central focal spot. With a 40 fs, 16 TW pulsed laser, electron bunches with tens of pC charge were measured to be accelerated to an energy up to 300 MeV, accompanied by X-ray emission with a peak brightness of the order of 10 21 ph/s/mm(2)/mrad(2)/0.1%BW. Electron trapping and acceleration were studied using the emitted X-ray beam distribution to map the acceleration process; the number of betatron oscillations performed by the electrons was inferred from the correlation between measured X-ray fluence and beam charge. A study of the stability of electron and X-ray generation suggests that the fluctuation of X-ray emission can be reduced by stabilizing the beam charge. The experimental results are in good agreement with 3D particle-in-cell (PIC) simulation. (C) 2013 AIP Publishing LLC.}}, author = {{Ju, J. and Svensson, Kristoffer and Ferrari, H. and Doepp, A. and Genoud, Guillaume and Wojda, Franck and Burza, Matthias and Persson, Anders and Lundh, Olle and Wahlström, Claes-Göran and Cros, B.}}, issn = {{1070-664X}}, language = {{eng}}, number = {{8}}, publisher = {{American Institute of Physics (AIP)}}, series = {{Physics of Plasmas}}, title = {{Study of electron acceleration and x-ray radiation as a function of plasma density in capillary-guided laser wakefield accelerators}}, url = {{https://lup.lub.lu.se/search/files/1318365/4117242.pdf}}, doi = {{10.1063/1.4817747}}, volume = {{20}}, year = {{2013}}, }