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Efficient energy transport throughout conical implosions
Yihang Zhang1, Zhe Zhang1,2,3, Xiaohui Yuan2,4
1Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.
Physical Review. E
|April 18, 2024
Summary
The double-cone ignition scheme efficiently absorbs laser energy, coupling 2-6% into supersonic plasma jets. These jets are crucial for creating high-density plasma cores in fusion energy research.
Area of Science:
- Physics
- Plasma Physics
- Fusion Energy
Background:
- Inertial confinement fusion (ICF) research explores alternative approaches to reduce driver energy requirements.
- The double-cone ignition (DCI) scheme is proposed as a novel ICF strategy.
Purpose of the Study:
- To evaluate the energy transfer efficiency in conical implosions within the DCI scheme.
- To assess the coupling of laser energy to plasma flows.
Main Methods:
- Systematic experimental investigation of conical implosion energetics.
- Measurement of laser energy absorption and coupling into plasma jets.
Main Results:
- High laser energy absorption (89%-96%) by the target with moderate stimulated Raman scattering.
- Efficient coupling of 2%-6% of laser energy into plasma jets ejected from cone tips.
- Generation of supersonic dense jets (Mach 4) conducive to high-density plasma core formation.
Conclusions:
- The DCI scheme demonstrates promising energy transport characteristics for fusion applications.
- The generated supersonic jets are favorable for achieving the conditions necessary for fusion ignition.
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