Hollow microspheres as targets for staged laser-driven proton acceleration
(2011) In New Journal of Physics 13.- Abstract
- A coated hollow core microsphere is introduced as a novel target in ultra-intense laser-matter interaction experiments. In particular, it facilitates staged laser-driven proton acceleration by combining conventional target normal sheath acceleration (TNSA), power recycling of hot laterally spreading electrons and staging in a very simple and cheap target geometry. During TNSA of protons from one area of the sphere surface, laterally spreading hot electrons form a charge wave. Due to the spherical geometry, this wave refocuses on the opposite side of the sphere, where an opening has been laser micromachined. This leads to a strong transient charge separation field being set up there, which can post-accelerate those TNSA protons passing... (More)
- A coated hollow core microsphere is introduced as a novel target in ultra-intense laser-matter interaction experiments. In particular, it facilitates staged laser-driven proton acceleration by combining conventional target normal sheath acceleration (TNSA), power recycling of hot laterally spreading electrons and staging in a very simple and cheap target geometry. During TNSA of protons from one area of the sphere surface, laterally spreading hot electrons form a charge wave. Due to the spherical geometry, this wave refocuses on the opposite side of the sphere, where an opening has been laser micromachined. This leads to a strong transient charge separation field being set up there, which can post-accelerate those TNSA protons passing through the hole at the right time. Experimentally, the feasibility of using such targets is demonstrated. A redistribution is encountered in the experimental proton energy spectra, as predicted by particle-in-cell simulations and attributed to transient fields set up by oscillating currents on the sphere surface. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1925773
- author
- Burza, Matthias LU ; Gonoskov, A. ; Genoud, Guillaume LU ; Persson, Anders LU ; Svensson, Kristoffer LU ; Quinn, M. ; McKenna, P. ; Marklund, M. and Wahlström, Claes-Göran LU
- organization
- publishing date
- 2011
- type
- Contribution to journal
- publication status
- published
- subject
- in
- New Journal of Physics
- volume
- 13
- article number
- 013030
- publisher
- IOP Publishing
- external identifiers
-
- wos:000288903600030
- scopus:79251586546
- ISSN
- 1367-2630
- DOI
- 10.1088/1367-2630/13/1/013030
- language
- English
- LU publication?
- yes
- id
- 0d8763a7-c841-4239-9a29-bfeade4935ab (old id 1925773)
- date added to LUP
- 2016-04-01 15:04:22
- date last changed
- 2022-04-22 06:42:13
@article{0d8763a7-c841-4239-9a29-bfeade4935ab, abstract = {{A coated hollow core microsphere is introduced as a novel target in ultra-intense laser-matter interaction experiments. In particular, it facilitates staged laser-driven proton acceleration by combining conventional target normal sheath acceleration (TNSA), power recycling of hot laterally spreading electrons and staging in a very simple and cheap target geometry. During TNSA of protons from one area of the sphere surface, laterally spreading hot electrons form a charge wave. Due to the spherical geometry, this wave refocuses on the opposite side of the sphere, where an opening has been laser micromachined. This leads to a strong transient charge separation field being set up there, which can post-accelerate those TNSA protons passing through the hole at the right time. Experimentally, the feasibility of using such targets is demonstrated. A redistribution is encountered in the experimental proton energy spectra, as predicted by particle-in-cell simulations and attributed to transient fields set up by oscillating currents on the sphere surface.}}, author = {{Burza, Matthias and Gonoskov, A. and Genoud, Guillaume and Persson, Anders and Svensson, Kristoffer and Quinn, M. and McKenna, P. and Marklund, M. and Wahlström, Claes-Göran}}, issn = {{1367-2630}}, language = {{eng}}, publisher = {{IOP Publishing}}, series = {{New Journal of Physics}}, title = {{Hollow microspheres as targets for staged laser-driven proton acceleration}}, url = {{http://dx.doi.org/10.1088/1367-2630/13/1/013030}}, doi = {{10.1088/1367-2630/13/1/013030}}, volume = {{13}}, year = {{2011}}, }