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Full Record Details
Persistent URL
http://purl.org/net/epubs/work/37278
Record Status
Checked
Record Id
37278
Title
High-energy K alpha radiography using high-intensity, short-pulse lasers
Contributors
HS Park
,
DM Chambers
,
HK Chung
,
RJ Clarke (CCLRC Rutherford Appleton Lab.)
,
R Eagleton
,
E Giraldez
,
T Goldsack
,
R Heathcote (CCLRC Rutherford Appleton Lab.)
,
N Izumi
,
MH Key
,
JA King
,
JA Koch
,
OL Landen
,
A Nikroo
,
PK Patel
,
DF Price
,
BA Remington
,
HF Robey
,
RA Snavely
,
DA Steinman
,
RB Stephens
,
C Stoeckl
,
M Storm
,
M Tabak
,
W Theobald
,
RPJ Town
,
JE Wickersham
,
BB Zhang
Abstract
The characteristics of 22-40 keV K alpha x-ray sources are measured. These high-energy sources are produced by 100 TW and petawatt high-intensity lasers and will be used to develop and implement workable radiography solutions to probe high-Z and dense materials for the high-energy density experiments. The measurements show that the K alpha source size from a simple foil target is larger than 60 mu m, too large for most radiography applications. The total K alpha yield is independent of target thicknesses, verifying that refluxing plays a major role in photon generation. Smaller radiating volumes emit brighter K alpha radiation. One-dimensional radiography experiments using small-edge-on foils resolved 10 mu m features with high contrast. Experiments were performed to test a variety of small volume two-dimensional point sources such as cones, wires, and embedded wires, measured photon yields, and compared the measurements with predictions from hybrid-particle-in-cell simulations. In addition to high-energy, high-resolution backlighters, future experiments will also need imaging detectors and diagnostic tools that are workable in the high-energy range. An initial look at some of these detector issues is also presented. (c) 2006 American Institute of Physics.
Organisation
CCLRC
,
CLF
,
CLF-HPL
,
CLF-VULCAN
Keywords
TARGET INTERACTION
,
PLASMA INTERACTIONS
,
EFFICIENCY
,
NATIONAL IGNITION FACILITY
,
SPECTROSCOPY
,
OPTIMIZATION
,
PETAWATT
,
HOT-ELECTRONS
,
CLF 2006-2007
,
X-RAY-EMISSION
,
TRANSPORT
Funding Information
Related Research Object(s):
Licence Information:
Language
English (EN)
Type
Details
URI(s)
Local file(s)
Year
Journal Article
Phys Plasmas
13, no. 5 (2006): 056309.
doi:10.1063/1.2178775
2006
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