High Energy Density Physics最新文献

Dynamic localized hot spot mix extraction from images in ICF experiments 在 ICF 实验中从图像中动态提取局部混合热点

IF 1.6 3区物理与天体物理

High Energy Density Physics Pub Date : 2024-11-19 DOI: 10.1016/j.hedp.2024.101160

Shahab F. Khan, Laurent Divol, Art Pak, Terance Hilsabeck, Bernard Kozioziemski, Benjamin Bachmann, Andrew G. MacPhee, Clement Trosseille

引用次数: 0

Study of shocks and ablation front in diamond ablator during a capsule implosion experiment at the National Ignition Facility 在国家点火装置的胶囊内爆实验中对金刚石烧蚀器中的冲击和烧蚀前沿的研究

IF 1.6 3区物理与天体物理

High Energy Density Physics Pub Date : 2024-11-15 DOI: 10.1016/j.hedp.2024.101161

Alexandre Do, Eduard L. Dewald, Marius Millot, Christopher R. Weber, Otto L. Landen, Vladimir A. Smalyuk

{"title":"Study of shocks and ablation front in diamond ablator during a capsule implosion experiment at the National Ignition Facility","authors":"Alexandre Do, Eduard L. Dewald, Marius Millot, Christopher R. Weber, Otto L. Landen, Vladimir A. Smalyuk","doi":"10.1016/j.hedp.2024.101161","DOIUrl":"10.1016/j.hedp.2024.101161","url":null,"abstract":"<div><div>An X-ray phase contrast imaging platform using streaked refraction enhanced radiography (RER) was recently developed for capsule implosions at the National Ignition Facility. RER was demonstrated to image in-flight capsule density gradients such as the fuel-ablator interface that is not visible in traditional absorption only radiography. The latest experiments probing the early time evolution of the implosion allowed the precise measurement of the density gradients. An iterative analysis method has been applied to the RER radiograph to allow the reconstruction of temporal evolution of the radial density distribution from the ice-ablator interface to the ablation front. The estimated density reconstruction precision is <span><math><mrow><mo>±</mo><mn>2</mn><mo>.</mo><mn>4</mn><mtext>%</mtext></mrow></math></span> with a density gradient sensitivity threshold of <span><math><mrow><mn>1</mn><msup><mrow><mn>0</mn></mrow><mrow><mn>23</mn></mrow></msup><mspace></mspace><msup><mrow><mi>cm</mi></mrow><mrow><mo>−</mo><mn>3</mn></mrow></msup></mrow></math></span> over a <span><math><mrow><mn>2</mn><mspace></mspace><mi>μ</mi><mi>m</mi></mrow></math></span> scale length. This enabled the study of shocks velocity and density gradients as well as ablation front scale length and shape.</div></div>","PeriodicalId":49267,"journal":{"name":"High Energy Density Physics","volume":"53 ","pages":"Article 101161"},"PeriodicalIF":1.6,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142702959","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

FLAIM: A reduced volume ignition model for the compression and thermonuclear burn of spherical fuel capsules FLAIM：球形燃料囊压缩和热核燃烧的减容点火模型

IF 1.6 3区物理与天体物理

High Energy Density Physics Pub Date : 2024-10-20 DOI: 10.1016/j.hedp.2024.101159

Abd Essamade Saufi, Hannah Bellenbaum , Martin Read, Nicolas Niasse, Sean Barrett, Nicholas Hawker, Nathan Joiner, David Chapman

{"title":"FLAIM: A reduced volume ignition model for the compression and thermonuclear burn of spherical fuel capsules","authors":"Abd Essamade Saufi, Hannah Bellenbaum , Martin Read, Nicolas Niasse, Sean Barrett, Nicholas Hawker, Nathan Joiner, David Chapman","doi":"10.1016/j.hedp.2024.101159","DOIUrl":"10.1016/j.hedp.2024.101159","url":null,"abstract":"<div><div>We present the “First Light Advanced Ignition Model” (FLAIM), a reduced model for the implosion, adiabatic compression, volume ignition and thermonuclear burn of a spherical DT fuel capsule utilising a high-Z metal pusher. <span>FLAIM</span> is characterised by a highly modular structure, which makes it an appropriate tool for optimisations, sensitivity analyses and parameter scans. One of the key features of the code is the 1D description of the hydrodynamic operator, which has a minor impact on the computational efficiency, but allows us to gain a major advantage in terms of physical accuracy. We demonstrate that a more accurate treatment of the hydrodynamics plays a primary role in closing most of the gap between a simple model and a general 1D rad-hydro code, and that only a residual part of the discrepancy is attributable to the heat losses. We present a detailed quantitative comparison between FLAIM and 1D rad-hydro simulations, showing good agreement over a large parameter space in terms of temporal profiles of key physical quantities, ignition maps and typical burn metrics.</div></div>","PeriodicalId":49267,"journal":{"name":"High Energy Density Physics","volume":"53 ","pages":"Article 101159"},"PeriodicalIF":1.6,"publicationDate":"2024-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142530761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Frustraum 1100 experimental campaign on the national ignition facility Frustraum 1100 国家点火装置实验活动

IF 1.6 3区物理与天体物理

High Energy Density Physics Pub Date : 2024-09-16 DOI: 10.1016/j.hedp.2024.101158

K.L. Baker , P.A. Amendt , D.A. Mariscal , H. Sio , O.L. Landen , D.D. Ho , V.A. Smalyuk , J.D. Lindl , J.S. Ross , L. Aghaian , A. Allen , N. Aybar , N.W. Birge , D.T. Casey , P.M. Celliers , H. Chen , T. Fehrenbach , D. Fittinghoff , H. Geppert-Kleinrath , V. Geppert-Kleinrath , C.V. Young

{"title":"Frustraum 1100 experimental campaign on the national ignition facility","authors":"K.L. Baker , P.A. Amendt , D.A. Mariscal , H. Sio , O.L. Landen , D.D. Ho , V.A. Smalyuk , J.D. Lindl , J.S. Ross , L. Aghaian , A. Allen , N. Aybar , N.W. Birge , D.T. Casey , P.M. Celliers , H. Chen , T. Fehrenbach , D. Fittinghoff , H. Geppert-Kleinrath , V. Geppert-Kleinrath , C.V. Young","doi":"10.1016/j.hedp.2024.101158","DOIUrl":"10.1016/j.hedp.2024.101158","url":null,"abstract":"<div><p>We present findings from an experimental tuning campaign aimed at igniting larger DT cryogenic layered implosions using a dual frustum shaped hohlraum, denoted “frustraum”. The frustraum's distinctive shape reduces hohlraum wall losses while concurrently enhancing minimum capsule clearance with the hohlraum wall and sensitivity to pointing changes. Compared to current cylindrical hohlraum (6.4 × 11.24 mm), the frustraum has a wall area approximately 20 % smaller, resulting in a measured improvement in efficiency of around 12 %. Consequently, 12 % less laser energy is required to implode a capsule within the same acceleration timeframe. Conversely, directing the same laser energy into the frustraum yields higher ion temperatures within symmetry capsules, along with increased radiation temperatures and reduced implosion acceleration times compared to current cylindrical hohlraums.</p></div>","PeriodicalId":49267,"journal":{"name":"High Energy Density Physics","volume":"53 ","pages":"Article 101158"},"PeriodicalIF":1.6,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142267927","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Double cylinder implosion experiments at the National Ignition Facility 国家点火装置的双筒内爆实验

IF 1.6 3区物理与天体物理

High Energy Density Physics Pub Date : 2024-09-11 DOI: 10.1016/j.hedp.2024.101156

J.P. Sauppe, I. Sagert, T.H. Day, K.A. Flippo, J.L. Kline, L. Kot, S. Palaniyappan, R.A. Roycroft, D.W. Schmidt

引用次数: 0

How ignition and target gain >1 were achieved in inertial fusion 如何在惯性聚变中实现点火和目标增益大于 1

IF 1.6 3区物理与天体物理

High Energy Density Physics Pub Date : 2024-09-11 DOI: 10.1016/j.hedp.2024.101157

O.A. Hurricane

引用次数: 0

Investigating the suitability of pristine and defective C3N monolayer as supercapacitor electrodes: DFT calculations 研究原始和缺陷 C3N 单层作为超级电容器电极的适用性：DFT 计算

IF 1.6 3区物理与天体物理

High Energy Density Physics Pub Date : 2024-09-02 DOI: 10.1016/j.hedp.2024.101154

Maher Ali Rusho , Ihsan A. Alduhan , Adil Ismael Mohammed , Hayder Hamid Abbas Al-Anbari , Aseel Salah Mansoor , Usama Kadem Radi , Amir H. Idean , Ahmad J. Obaidullah , Hala Bahair , Anupam Yadav

{"title":"Investigating the suitability of pristine and defective C3N monolayer as supercapacitor electrodes: DFT calculations","authors":"Maher Ali Rusho , Ihsan A. Alduhan , Adil Ismael Mohammed , Hayder Hamid Abbas Al-Anbari , Aseel Salah Mansoor , Usama Kadem Radi , Amir H. Idean , Ahmad J. Obaidullah , Hala Bahair , Anupam Yadav","doi":"10.1016/j.hedp.2024.101154","DOIUrl":"10.1016/j.hedp.2024.101154","url":null,"abstract":"<div><p>The possibility of utilizing defected C<sub>3</sub>N monolayers as the electrodes of supercapacitors (SCs) was investigated in the current study by performing DFT computations. A single-vacancy C<sub>3</sub>N monolayer (SC<sub>3</sub>NML), a double-vacancy C<sub>3</sub>N monolayer (DC<sub>3</sub>NM) and a pure C<sub>3</sub>N monolayer (PC<sub>3</sub>NML) were investigated. The charge plots, quantum capacitance (QC) and the density of state of SC<sub>3</sub>NML, DC<sub>3</sub>NM and PC<sub>3</sub>NML were also studied. Based on the results, the QC of SC<sub>3</sub>NML and DC<sub>3</sub>NM at voltages between -0.80 and 0.80 V was more compared to the QC of PC<sub>3</sub>NML. It was possible to use SC<sub>3</sub>NML as a negative electrode and DC<sub>3</sub>NM as a positive electrode, both of which were p-type semi-conductors. The stored charge in the SC<sub>3</sub>NML and DC<sub>3</sub>NM was higher compared to the stored charge in PC<sub>3</sub>NML at voltages 0 to 0.8 V. The charge stored in DC<sub>3</sub>NM was higher than the stored charge in SC<sub>3</sub>NML and PC<sub>3</sub>NML. Finally, DC<sub>3</sub>NML layer can be regarded as an encouraging electrode for application in SCs.</p></div>","PeriodicalId":49267,"journal":{"name":"High Energy Density Physics","volume":"53 ","pages":"Article 101154"},"PeriodicalIF":1.6,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142148471","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Propagation of circularly polarized electromagnetic wave in magnetized spin plasma 磁化自旋等离子体中圆极化电磁波的传播

IF 1.6 3区物理与天体物理

High Energy Density Physics Pub Date : 2024-09-02 DOI: 10.1016/j.hedp.2024.101155

Qiang-Lin Hu , Yan-Chao She , Wen Hu , Jin-Peng Xiao , Zheng-Guo Xiao

引用次数: 0

Technique for an improved and time-resolved carbon areal density measurement with a single channel diagnostic for inertial confinement fusion 利用单通道诊断技术改进惯性约束聚变的时间分辨碳等值密度测量技术

IF 1.6 3区物理与天体物理

High Energy Density Physics Pub Date : 2024-09-02 DOI: 10.1016/j.hedp.2024.101145

Hermann Geppert-Kleinrath , Robert Dwyer , Kevin Meaney , Cathleen Fry , Yongho Kim

引用次数: 0

2D kinetic-ion simulations of inverted corona fusion targets 倒日冕聚变目标的二维动能离子模拟

IF 1.6 3区物理与天体物理

High Energy Density Physics Pub Date : 2024-08-28 DOI: 10.1016/j.hedp.2024.101146

William Riedel , Nathan Meezan , Drew Higginson , Matthias Hohenberger , Mark Cappelli

{"title":"2D kinetic-ion simulations of inverted corona fusion targets","authors":"William Riedel , Nathan Meezan , Drew Higginson , Matthias Hohenberger , Mark Cappelli","doi":"10.1016/j.hedp.2024.101146","DOIUrl":"10.1016/j.hedp.2024.101146","url":null,"abstract":"<div><p>Laser-driven “inverted corona” fusion targets have attracted interest as a low-convergence neutron source and platform for studying kinetic physics. The scheme consists of a hollow or gas-filled spherical shell made of deuterated plastic. The shell has one or more laser entrance holes (LEH), resembling a spherical hohlraum. The laser passes through the LEH’s and illuminates the interior surface of the shell, ablating a plasma that travels inward towards the target center. Long ion mean free paths in the converging plasma can lead to significant interpenetration, atomic mix, and other kinetic effects. In this work we report on numerical simulations of inverted corona targets using the kinetic-ion, fluid–electron hybrid particle-in-cell (PIC) approach in 2D RZ geometry. 2D simulations suggest that shape effects do not have a significant impact on plasma evolution and observed yield trends are primarily the result of 1D kinetic mix mechanisms. Simulations are also compared against available experimental data recorded at the OMEGA laser facility. In particular, synthetic x-ray emission images show good qualitative agreement with experimental results, albeit with an apparent timing discrepancy for the two-sided vacuum target. More generally, we demonstrate the potential of hybrid-PIC simulations for full-system modeling and experimental design, including collisional absorption of laser energy, plasma evolution, mix, and fusion burn.</p></div>","PeriodicalId":49267,"journal":{"name":"High Energy Density Physics","volume":"53 ","pages":"Article 101146"},"PeriodicalIF":1.6,"publicationDate":"2024-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142148344","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0