FusionPapers
図版検索トレンドwiki日本の研究
© 2026 FUSIONPAPERS
About法務情報
トップに戻る

Wire-array z-pinch: a powerful x-ray source for ICF

M G Haines, T W L Sanford, V P Smirnov2005年Plasma Physics and Controlled FusionIF 2.2出版社

The wire-array z-pinch has in a very short time achieved remarkable performance as a powerful (>200 TW), pulsed soft x-ray source of high efficiency (∼15%) and of great relevance to inertial confinement fusion. The underlying physics involves the transformation of wire cores to a plasma corona, the occurrence of uncorrelated axial instabilities, inward flowing low magnetic Reynolds number jets, sometimes an accumulated stable and dynamically confined precursor column, an almost constant velocity implosion when gaps occur in the wire cores and finally at stagnation a fast-rising soft x-ray pulse of typically 5 ns FWHM. Nested arrays improve the performance and can operate in several modes. Three hohlraum designs have been tested; one of these, the dynamic hohlraum, has achieved a radiation temperature of ∼230 eV and has compressed a capsule from 2 to ∼0.8 mm diameter with a neutron yield of > 1010 thermal DD neutrons. Lower mass stainless steel wire arrays are used for Kα radiation sources. Generally implosions lead to more energy radiated than the implosive kinetic energy, and this is hypothesized as being due to ion viscous heating, as fast-growing short wavelength nonlinear MHD instabilities are dissipated; record ion temperatures of 200–300 keV are predicted and have been measured for the stainless steel array on Z at Sandia.

日本語訳

ワイヤーアレイZピンチは、非常に短時間で高出力(>200 TW)のパルス軟X線源として、高効率(約15%)かつ慣性核融合に極めて関連性の高い顕著な性能を達成した。その基礎となる物理には、ワイヤーコアからプラズマコロナへの変換、軸方向に無相関な不安定性の発生、低磁気レイノルズ数ジェットの内向き流れ、時として蓄積される安定かつ動的に閉じ込められた前駆体柱、ワイヤーコアにギャップが生じた際のほぼ一定速度の爆縮、そして最終的なスタグネーション時における典型的に5 nsの半値全幅を持つ急速立ち上がりの軟X線パルスが含まれる。ネステッドアレイは性能を向上させ、複数のモードで動作可能である。3種類のホーラム設計が試験され、そのうちの1つであるダイナミックホーラムは、約230 eVの放射温度を達成し、カプセルを直径約2 mmから約0.8 mmまで圧縮し、>10¹⁰個の熱核DD中性子収量を得た。より低質量のステンレス鋼ワイヤーアレイはKα線源として使用される。一般に、爆縮は爆縮運動エネルギーよりも多くのエネルギーを放射し、これは高速成長する短波長MHD不安定性が散逸する際のイオン粘性加熱によるものと仮説が立てられている。サンディア国立研究所のZ装置におけるステンレス鋼アレイでは、記録的なイオン温度200~300 keVが予測され、実際に測定されている。

wiki

Inertial confinement fusion
この論文にはまだAI要約がありません。

関連論文

A review of the dense Z-pinch

2011Plasma Physics and Controlled Fusion

X-ray generation mechanisms in three-dimensional simulations of wire array Z-pinches

2004Plasma Physics and Controlled Fusion

Fast z-pinches as dense plasma, intense x-ray sources for plasma physics and fusion applications

1999Plasma Physics and Controlled Fusion

Z pinches as intense X-ray sources for inertial confinement fusion applications

1999Fusion Engineering and Design

High performance capsule implosions driven by the Z-pinch dynamic hohlraum

2007Plasma Physics and Controlled Fusion

Physics of wire array Z-pinch implosions: experiments at Imperial College

2005Plasma Physics and Controlled Fusion

Characterizing the uniformity of polystyrene and TPX z-pinch fusion targets by nuclear microscopy

1999Fusion Engineering and Design

First implosion experiments with cryogenic thermonuclear fuel on the National Ignition Facility

2012Plasma Physics and Controlled Fusion

Investigation on the scaling of magneto-Rayleigh–Taylor instability to the current rise time of Z-pinch plasmas

2023Nuclear Fusion

Implosion dynamics of wire array Z-pinches: experiments at Imperial College

2004Nuclear Fusion