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Energetic deuterium-ion beams and neutron source driven by multiple-laser interaction with pitcher-catcher target
- Source :
- Nuclear Fusion. 60:076019
- Publication Year :
- 2020
- Publisher :
- IOP Publishing, 2020.
-
Abstract
- Multiple lasers interacting with a deuterated (D) pitcher-catcher target and neutron generation are investigated using two-dimensional hybrid particle-in-cell and Monte Carlo simulations. It is found that when multiple laser pulses are focused on the front surface of the pitcher layer, D+ ion acceleration by target normal sheath acceleration (TNSA) is enhanced by the interfering overlapped light fields and the resulting periodic target-surface structure. With three laser pulses each of 4.5×1019 W/cm2 intensity, 33 fs duration and ~160 mJ energy, focusing at suitable angles on the pitcher layer, one can obtain 15 MeV D+ ions and ~25% laser-to-D+ ions energy conversion efficiency. As the resulting high-energy-density D+ ions bombard the catcher layer, D-D fusion reactions are triggered. About 3.6×107 neutrons can be produced, with the maximum neutron production rate as high as 3.1×1036 m-3s-1, almost an order of magnitude higher than that from a single laser of the same total energy.
- Subjects :
- Nuclear and High Energy Physics
Materials science
Monte Carlo method
Energy conversion efficiency
Condensed Matter Physics
Laser
01 natural sciences
010305 fluids & plasmas
law.invention
Ion
Deuterium
law
0103 physical sciences
Neutron source
Nuclear fusion
Neutron
Atomic physics
010306 general physics
Subjects
Details
- ISSN :
- 17414326 and 00295515
- Volume :
- 60
- Database :
- OpenAIRE
- Journal :
- Nuclear Fusion
- Accession number :
- edsair.doi...........81108529d633f71ede5c3350f1db33fc