Control of fuel target implosion non-uniformity in heavy ion inertial fusion

作者：Iinuma T^*; Karino T; Kondo S; Kubo T; Kato H; Suzuki T; Kawata S^*; Ogoyski A I

来源：Laser and Particle Beams, 2016, 34(4): 729-734.

DOI：10.1017/S0263034616000677

• Heavy ion inertial fusion
• Target implosion
• Dynamic stabilization
• Wobbling beam

In inertial fusion, one of scientific issues is to reduce an implosion non-uniformity of a spherical fuel target. The implosion non-uniformity is caused by several factors, including the driver beam illumination non-uniformity, the Rayleigh-Taylor instability (RTI) growth, etc. In this paper, we propose a new control method to reduce the implosion non-uniformity; the oscillating implosion acceleration delta g(t) is created by pulsating and dephasing heavy-ion beams (HIBs) in heavy-ion inertial fusion (HIF). The delta g(t) would reduce the RTI growth effectively. The original concept of the non-uniformity control in inertial fusion was proposed in [Laser Part. Beams (1993) 11, 757-768]. In this paper, it was found that the pulsating and dephasing HIBs illumination provide successfully the controlled delta g(t) and that delta g(t) induced by the pulsating HIBs reduces well the implosion non-uniformity. Consequently the pulsating HIBs improve a pellet gain remarkably in HIF.

• 出版日期2016-12