ePubs
The open archive for STFC research publications
Home
About ePubs
Content Policies
News
Help
Privacy/Cookies
Suggest an Enhancement
Contact ePubs
Full Record Details
Persistent URL
http://purl.org/net/epubs/work/12206904
Record Status
Checked
Record Id
12206904
Title
High efficiency proton beam generation through target thickness control in femtosecond laser-plasma interactions
Contributors
JS Green (STFC Rutherford Appleton Lab.)
,
APL Robinson (STFC Rutherford Appleton Lab.)
,
N Booth (STFC Rutherford Appleton Lab.)
,
DC Carroll (STFC Rutherford Appleton Lab.)
,
RJ Dance (York Plasma Institute)
,
RJ Gray (Strathclyde Univ.)
,
DA MacLellan (Strathclyde Univ.)
,
P McKenna (Strathclyde Univ.)
,
CD Murphy (Strathclyde Univ.)
,
D Rusby (STFC Rutherford Appleton Lab.)
,
L Wilson (STFC Rutherford Appleton Lab.)
Abstract
Bright proton beams with maximum energies of up to 30 MeV have been observed in an experiment investigating ion sheath acceleration driven by a short pulse (<50 fs) laser. The scaling of maximum proton energy and total beam energy content at ultra-high intensities of ∼1021 W cm−2 was investigated, with the interplay between target thickness and laser pre-pulse found to be a key factor. While the maximum proton energies observed were maximised for μm-thick targets, the total proton energy content was seen to peak for thinner, 500 nm, foils. The total proton beam energy reached up to 440 mJ (a conversion efficiency of 4%), marking a significant step forward for many laser-driven ion applications. The experimental results are supported by hydrodynamic and particle-in-cell simulations.
Organisation
CLF
,
CLF-HPL
,
CLF-ASTRA
,
CI
,
STFC
Keywords
Funding Information
EPSRC
(EP/J003832/1)
Related Research Object(s):
Licence Information:
Language
English (EN)
Type
Details
URI(s)
Local file(s)
Year
Journal Article
Appl Phys Lett
104, no. 21 (2014): 214101.
doi:10.1063/1.4879641
2014
Showing record 1 of 1
Recent Additions
Browse Organisations
Browse Journals/Series
Login to add & manage publications and access information for OA publishing
Username:
Password:
Useful Links
Chadwick & RAL Libraries
SHERPA FACT
SHERPA RoMEO
SHERPA JULIET
Journal Checker Tool
Google Scholar