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Transport and spatial energy deposition of relativistic electrons in copper-doped fast ignition plasmas.
- Source :
- Physics of Plasmas; 2017, Vol. 24 Issue 10, p1-14, 14p, 1 Color Photograph, 13 Graphs
- Publication Year :
- 2017
-
Abstract
- Fast electron transport and spatial energy deposition are investigated in integrated cone-guided Fast Ignition experiments by measuring fast electron induced copper K-shell emission using a copper tracer added to deuterated plastic shells with a geometrically reentrant gold cone. Experiments were carried out at the Laboratory for Laser Energetics on the OMEGA/OMEGA-EP Laser where the plastic shells were imploded using 54 of the 60 OMEGA60 beams (3ω, 20 kJ), while the high intensity OMEGA-EP (BL2) beam (1 ω, 10 ps, 500 J, I<subscript>peak</subscript> > 10<superscript>19</superscript> W/cm²) was focused onto the inner cone tip. A retrograde analysis using the hybrid-PIC electron transport code, ZUMA, is performed to examine the sensitivity of the copper K<subscript>α</subscript> spatial profile on the laser-produced fast electrons, facilitating the optimization of new target point designs and laser configurations to improve the compressed core areal density by a factor of 4 and the fast electron energy coupling by a factor of 3.5. [ABSTRACT FROM AUTHOR]
- Subjects :
- ELECTRON transport
K-shell emission
PLASMA gases
LASER beams
ELECTRON energy states
Subjects
Details
- Language :
- English
- ISSN :
- 1070664X
- Volume :
- 24
- Issue :
- 10
- Database :
- Complementary Index
- Journal :
- Physics of Plasmas
- Publication Type :
- Academic Journal
- Accession number :
- 126024877
- Full Text :
- https://doi.org/10.1063/1.4999108