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arXiv 1608.01064physics.plasm-ph
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重离子惯性聚变燃料靶内爆非均匀性控制

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

T. Iinuma, T. Karino, S. Kondo, T. Kubo, H. Kato, T. Suzuki, S. Kawata, A. I. Ogoyski

摘要:

在惯性聚变中,减小球形燃料靶的内爆不均匀性是一个重要的科学问题。内爆不均匀性是由驱动束照明不均匀性、瑞利-泰勒不稳定性(RTI)增长等因素引起的。本文提出了一种新的控制方法来减小内爆不均匀性;在重离子惯性聚变(HIF)中,通过重离子束(HIBs)的脉动和退相来产生振荡的内爆加速度dg(t)。dg(t)能有效地抑制RTI的增长。惯性聚变中的非均匀性控制的原始概念是在(Kawata等人,1993年)。在本文中,我们发现,脉动和失相的HIBs照明成功地提供了受控的dg(t)和dg(t)诱导的脉动HIBs降低了内爆的不均匀性。因此,脉动HIBs显著改善了HIF中的颗粒增益。

英文摘要:

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 dg(t) is created by pulsating and dephasing heavy ion beams (HIBs) in heavy ion inertial fusion (HIF). The dg(t) would reduce the RTI growth effectively. The original concept of the non- uniformity control in inertial fusion was proposed in (Kawata, et al., 1993). In this paper it was found that the pulsating and dephasing HIBs illumination provide successfully the controlled dg(t) and that dg(t) induced by the pulsating HIBs reduces well the implosion non-uniformity. Consequently the pulsating HIBs improve a pellet gain remarkably in HIF.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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