High Energy Density Physics最新文献_第3页

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. FLAIM 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>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.</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>The possibility of utilizing defected C3N monolayers as the electrodes of supercapacitors (SCs) was investigated in the current study by performing DFT computations. A single-vacancy C3N monolayer (SC3NML), a double-vacancy C3N monolayer (DC3NM) and a pure C3N monolayer (PC3NML) were investigated. The charge plots, quantum capacitance (QC) and the density of state of SC3NML, DC3NM and PC3NML were also studied. Based on the results, the QC of SC3NML and DC3NM at voltages between -0.80 and 0.80 V was more compared to the QC of PC3NML. It was possible to use SC3NML as a negative electrode and DC3NM as a positive electrode, both of which were p-type semi-conductors. The stored charge in the SC3NML and DC3NM was higher compared to the stored charge in PC3NML at voltages 0 to 0.8 V. The charge stored in DC3NM was higher than the stored charge in SC3NML and PC3NML. Finally, DC3NML layer can be regarded as an encouraging electrode for application in SCs.</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>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.</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

Electron impact ionization in dense plasmas 致密等离子体中的电子碰撞电离

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.2024.101153

Walter R. Johnson , Joseph Nilsen , K.T. Cheng

引用次数: 0

Stable creation of a single plasma channel and collimated fast electrons using large-scale PIC simulations with new dynamic load-balancing technique 利用新型动态负载平衡技术进行大规模 PIC 模拟，稳定创建单个等离子体通道和准直快速电子

IF 1.6 3区物理与天体物理

High Energy Density Physics Pub Date : 2024-08-26 DOI: 10.1016/j.hedp.2024.101147

Hideaki Habara , Yoshinori Ueyama , Yutaka Nakamura , Hitoshi Sakagami

引用次数: 0