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Laser generated 300 keV electron beams from water

Uhlig, Jens LU ; Wahlström, Claes-Göran LU ; Walczak, Monika LU ; Sundström, Villy LU and Fullagar, Wilfred LU (2011) In Laser and Particle Beams 29(4). p.415-424
Abstract
Abstract in Undetermined
300 keV electron beams with energy peaked in the range 280–390 keV were generated by focusing a high contrast ratio but temporally double pulsed 800 nm ultrafast laser onto a flowing water jet under both helium atmosphere at ambient pressure and water aspirator vacuum conditions, using laser intensities in the range 1015–1018 Wcm−2. Their characteristics have been investigated as functions of inter-pulse delay, incidence geometry and laser pulse chirp. Shot-to-shot variation of the beams' equatorial and azimuthal distributions was also recorded in real time. Measurements of the emitted charge and energy have been performed. Secondary X-ray emission arising from impingement of the electron beams on the target... (More)
Abstract in Undetermined
300 keV electron beams with energy peaked in the range 280–390 keV were generated by focusing a high contrast ratio but temporally double pulsed 800 nm ultrafast laser onto a flowing water jet under both helium atmosphere at ambient pressure and water aspirator vacuum conditions, using laser intensities in the range 1015–1018 Wcm−2. Their characteristics have been investigated as functions of inter-pulse delay, incidence geometry and laser pulse chirp. Shot-to-shot variation of the beams' equatorial and azimuthal distributions was also recorded in real time. Measurements of the emitted charge and energy have been performed. Secondary X-ray emission arising from impingement of the electron beams on the target chamber walls and other parts of the apparatus have been identified. Preliminary results after transition to a high repetition rate laser system have shown similar behavior. Approaches for improvements and applications are suggested. (Less)
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author
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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Fast electrons, Laser-plasma wakefield acceleration, Multi-pulse structure, Plasma source, Table top X-ray source
in
Laser and Particle Beams
volume
29
issue
4
pages
415 - 424
publisher
Cambridge University Press
external identifiers
  • wos:000298714600005
  • scopus:84055221951
ISSN
0263-0346
DOI
10.1017/S0263034611000516
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
4cccf832-5d97-4fad-a9ec-4a357d5bb8da (old id 2256975)
date added to LUP
2016-04-01 14:11:38
date last changed
2021-08-25 04:56:41
@article{4cccf832-5d97-4fad-a9ec-4a357d5bb8da,
  abstract     = {Abstract in Undetermined<br/>300 keV electron beams with energy peaked in the range 280–390 keV were generated by focusing a high contrast ratio but temporally double pulsed 800 nm ultrafast laser onto a flowing water jet under both helium atmosphere at ambient pressure and water aspirator vacuum conditions, using laser intensities in the range 1015–1018 Wcm−2. Their characteristics have been investigated as functions of inter-pulse delay, incidence geometry and laser pulse chirp. Shot-to-shot variation of the beams' equatorial and azimuthal distributions was also recorded in real time. Measurements of the emitted charge and energy have been performed. Secondary X-ray emission arising from impingement of the electron beams on the target chamber walls and other parts of the apparatus have been identified. Preliminary results after transition to a high repetition rate laser system have shown similar behavior. Approaches for improvements and applications are suggested.},
  author       = {Uhlig, Jens and Wahlström, Claes-Göran and Walczak, Monika and Sundström, Villy and Fullagar, Wilfred},
  issn         = {0263-0346},
  language     = {eng},
  number       = {4},
  pages        = {415--424},
  publisher    = {Cambridge University Press},
  series       = {Laser and Particle Beams},
  title        = {Laser generated 300 keV electron beams from water},
  url          = {http://dx.doi.org/10.1017/S0263034611000516},
  doi          = {10.1017/S0263034611000516},
  volume       = {29},
  year         = {2011},
}