Laser-plasma electron acceleration in dielectric capillary tubes
(2011) In Applied Physics B 105(2). p.309-316- Abstract
- Electron beams and betatron X-ray radiation generated by laser wakefield acceleration in long plasma targets are studied. The targets consist of hydrogen filled dielectric capillary tubes of diameter 150 to 200 microns and length 6 to 20 mm. Electron beams are observed for peak laser intensities as low as 5x10(17) W/cm(2). It is found that the capillary collects energy outside the main peak of the focal spot and contributes to keep the beam self-focused over a distance longer than in a gas jet of similar density. This enables the pulse to evolve enough to reach the threshold for wavebreaking, and thus trap and accelerate electrons. No electrons were observed for capillaries of large diameter (250 mu m), confirming that the capillary... (More)
- Electron beams and betatron X-ray radiation generated by laser wakefield acceleration in long plasma targets are studied. The targets consist of hydrogen filled dielectric capillary tubes of diameter 150 to 200 microns and length 6 to 20 mm. Electron beams are observed for peak laser intensities as low as 5x10(17) W/cm(2). It is found that the capillary collects energy outside the main peak of the focal spot and contributes to keep the beam self-focused over a distance longer than in a gas jet of similar density. This enables the pulse to evolve enough to reach the threshold for wavebreaking, and thus trap and accelerate electrons. No electrons were observed for capillaries of large diameter (250 mu m), confirming that the capillary influences the interaction and does not have the same behaviour as a gas cell. Finally, X-rays are used as a diagnostic of the interaction and, in particular, to estimate the position of the electrons trapping point inside the capillary. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/2212088
- author
- organization
- publishing date
- 2011
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Applied Physics B
- volume
- 105
- issue
- 2
- pages
- 309 - 316
- publisher
- Springer
- external identifiers
-
- wos:000295938100020
- scopus:84855590271
- ISSN
- 0946-2171
- DOI
- 10.1007/s00340-011-4639-4
- language
- English
- LU publication?
- yes
- additional info
- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Atomic physics (011013005), Chemical Physics (S) (011001060)
- id
- 9bc89cc3-eae2-4a0f-9ae1-274df31f6526 (old id 2212088)
- date added to LUP
- 2016-04-01 10:52:20
- date last changed
- 2022-01-26 03:17:52
@article{9bc89cc3-eae2-4a0f-9ae1-274df31f6526, abstract = {{Electron beams and betatron X-ray radiation generated by laser wakefield acceleration in long plasma targets are studied. The targets consist of hydrogen filled dielectric capillary tubes of diameter 150 to 200 microns and length 6 to 20 mm. Electron beams are observed for peak laser intensities as low as 5x10(17) W/cm(2). It is found that the capillary collects energy outside the main peak of the focal spot and contributes to keep the beam self-focused over a distance longer than in a gas jet of similar density. This enables the pulse to evolve enough to reach the threshold for wavebreaking, and thus trap and accelerate electrons. No electrons were observed for capillaries of large diameter (250 mu m), confirming that the capillary influences the interaction and does not have the same behaviour as a gas cell. Finally, X-rays are used as a diagnostic of the interaction and, in particular, to estimate the position of the electrons trapping point inside the capillary.}}, author = {{Genoud, Guillaume and Cassou, K. and Wojda, F. and Ferrari, H. E. and Kamperidis, Christos and Burza, Matthias and Persson, A and Uhlig, Jens and Kneip, S. and Mangles, S. P. D. and Lifschitz, A. and Cros, B. and Wahlström, Claes-Göran}}, issn = {{0946-2171}}, language = {{eng}}, number = {{2}}, pages = {{309--316}}, publisher = {{Springer}}, series = {{Applied Physics B}}, title = {{Laser-plasma electron acceleration in dielectric capillary tubes}}, url = {{http://dx.doi.org/10.1007/s00340-011-4639-4}}, doi = {{10.1007/s00340-011-4639-4}}, volume = {{105}}, year = {{2011}}, }