Magnetized fast isochoric laser heating for efficient creation of ultra-high-energy-density states.
Magnetized fast isochoric laser heating for efficient creation of ultra-high-energy-density states.
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DOI：
10.1038/s41467-018-06173-6
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发表时间：
2018-09-26
影响因子：
16.6
通讯作者：
Fujioka S
中科院分区：
文献类型：
--
作者：
Sakata S;Lee S;Morita H;Johzaki T;Sawada H;Iwasa Y;Matsuo K;Law KFF;Yao A;Hata M;Sunahara A;Kojima S;Abe Y;Kishimoto H;Syuhada A;Shiroto T;Morace A;Yogo A;Iwata N;Nakai M;Sakagami H;Ozaki T;Yamanoi K;Norimatsu T;Nakata Y;Tokita S;Miyanaga N;Kawanaka J;Shiraga H;Mima K;Nishimura H;Bailly-Grandvaux M;Santos JJ;Nagatomo H;Azechi H;Kodama R;Arikawa Y;Sentoku Y;Fujioka S
用高强度短脉冲激光对预压缩等离子体核心进行快速等容加热是一种有吸引力的替代方法，可以产生超高能量密度状态，如惯性约束聚变（ICF）点火火花中所发现的状态。激光产生的相对论性电子束（REB）将部分动能沉积在堆芯，加热区成为热火花，触发点火。然而，由于所产生的REB的固有的大的角展度，仅REB的一小部分与芯碰撞。在这里，我们证明了一个因素的两个增强的激光与核心的能量耦合与磁化快速等容加热。该方法采用数百特斯拉的磁场，该磁场被施加到从REB产生区到芯的传输区域，这导致将REB沿着磁场线引导到芯。与传统的ICF方案相比，该方案可以提供更有效的能量耦合。希望在稠密等离子体核心中存款更多的能量以触发聚变点火。在这里，作者演示了增强能量耦合从激光等离子体核心使用固体靶和引导相对论电子束的传输与外部磁场。
Fast isochoric heating of a pre-compressed plasma core with a high-intensity short-pulse laser is an attractive and alternative approach to create ultra-high-energy-density states like those found in inertial confinement fusion (ICF) ignition sparks. Laser-produced relativistic electron beam (REB) deposits a part of kinetic energy in the core, and then the heated region becomes the hot spark to trigger the ignition. However, due to the inherent large angular spread of the produced REB, only a small portion of the REB collides with the core. Here, we demonstrate a factor-of-two enhancement of laser-to-core energy coupling with the magnetized fast isochoric heating. The method employs a magnetic field of hundreds of Tesla that is applied to the transport region from the REB generation zone to the core which results in guiding the REB along the magnetic field lines to the core. This scheme may provide more efficient energy coupling compared to the conventional ICF scheme. It is desirable to deposit more energy in the dense plasma core to trigger the fusion ignition. Here the authors demonstrate enhanced energy coupling from laser to plasma core by using solid targets and guiding the transport of relativistic electron beam with external magnetic field.
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影响因子：
2.4
作者：
Dharma-wardana, MWC
通讯作者：
Dharma-wardana, MWC
实验室中的 X 射线天文学，利用激光驱动内爆产生的微型致密物体
影响因子：
19.6
作者：
Fujioka, Shinsuke;Takabe, Hideaki;Mima, Kunioki
通讯作者：
Mima, Kunioki
影响因子：
2.2
作者：
Johzaki, T.;Sentoku, Y.;Mima, K.
通讯作者：
Mima, K.
影响因子：
2.2
作者：
Lindl, John;Landen, Otto;Baxamusa, S. H.
通讯作者：
Baxamusa, S. H.
影响因子：
16.6
作者：
Bailly-Grandvaux M;Santos JJ;Bellei C;Forestier-Colleoni P;Fujioka S;Giuffrida L;Honrubia JJ;Batani D;Bouillaud R;Chevrot M;Cross JE;Crowston R;Dorard S;Dubois JL;Ehret M;Gregori G;Hulin S;Kojima S;Loyez E;Marquès JR;Morace A;Nicolaï P;Roth M;Sakata S;Schaumann G;Serres F;Servel J;Tikhonchuk VT;Woolsey N;Zhang Z
通讯作者：
Zhang Z