ePubs
The open archive for STFC research publications
Home
About ePubs
Content Policies
News
Help
Privacy/Cookies
Contact ePubs
Full Record Details
Persistent URL
http://purl.org/net/epubs/work/36991
Record Status
Checked
Record Id
36991
Title
Efficient K-alpha and He-alpha emission from Ti foils irradiated with 400 nm, 45 fs laser pulses
Contributors
D Riley
,
FY Khattak
,
OAMBP du Sert
,
RJ Clarke (STFC Rutherford Appleton Lab.)
,
EJ Divall (STFC Rutherford Appleton Lab.)
,
M Edwards
,
PS Foster (STFC Rutherford Appleton Lab.)
,
CJ Hooker (STFC Rutherford Appleton Lab.)
,
A Langley (STFC Rutherford Appleton Lab.)
,
P Mistry
,
D Neely (STFC Rutherford Appleton Lab.)
,
J Smith (STFC Rutherford Appleton Lab.)
,
C Spindloe (STFC Rutherford Appleton Lab.)
,
GJ Tallents
,
M Tolley (STFC Rutherford Appleton Lab.)
Abstract
We have used the ASTRA laser facility to irradiate Ti foils with 45-fs 400 nm laser pulses at irradiances Up to similar to 10(19) W cm(-2). We have observed both thermal line radiation, in the form of the He-like 1s(2)-1s2p transitions (He-alpha), and the K-alpha emission line. We have noted that the efficiency of K-alpha production is in excess of 2 x 10(-4) and thus compares well with using the fundamental 800 nm radiation. The behaviour of the K-alpha emission as a function of polarisation and angle of incidence suggests a vacuum heating mechanism as the principal source of the fast electrons necessary to create the inner-shell vacancies. Use of streak cameras in the X-ray regime has demonstrated that the emission of both K-alpha and He-alpha radiation lasts several picoseconds. In the former case, this would seem to imply that fast electrons generated by resonance absorption are circulated for some time before penetrating the foil. (C) 2005 Elsevier Ltd. All rights reserved.
Organisation
CCLRC
,
CLF
,
CLF-HPL
,
CLF-ASTRA
Keywords
CLF 2006-2007
Funding Information
Related Research Object(s):
Licence Information:
Language
English (EN)
Type
Details
URI(s)
Local file(s)
Year
Journal Article
J Quant Spectrosc Rad
99, no. 1-3 (2006): 537-547.
doi:10.1016/j.jqsrt.2005.05.043
2006
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