Laser and Particle Beams最新文献_第3页

Investigation of Proton Beam-Driven Fusion Reactions Generated by an Ultra-Short Petawatt-Scale Laser Pulse 超短佩瓦级激光脉冲质子束驱动聚变反应的研究

IF 0.9 4区物理与天体物理

Laser and Particle Beams Pub Date : 2022-10-13 DOI: 10.1155/2022/2404263

M. Schollmeier, V. Shirvanyan, Christie-Leigh Capper, S. Steinke, A. Higginson, R. Hollinger, J. Morrison, R. Nedbailo, Huanyu Song, Shoujun Wang, J. Rocca, G. Korn

{"title":"Investigation of Proton Beam-Driven Fusion Reactions Generated by an Ultra-Short Petawatt-Scale Laser Pulse","authors":"M. Schollmeier, V. Shirvanyan, Christie-Leigh Capper, S. Steinke, A. Higginson, R. Hollinger, J. Morrison, R. Nedbailo, Huanyu Song, Shoujun Wang, J. Rocca, G. Korn","doi":"10.1155/2022/2404263","DOIUrl":"https://doi.org/10.1155/2022/2404263","url":null,"abstract":"We present results from a pitcher-catcher experiment utilizing a proton beam generated with nanostructured targets at a petawatt-class, short-pulse laser facility to induce proton-boron fusion reactions in a secondary target. A 45-fs laser pulse with either 400 nm wavelength and 7 J energy, or 800 nm and 14 J, and an intensity of up to 5 × 1021 W/cm2 was used to irradiate either thin foil targets or near-solid density, nanostructured targets made of boron nitride (BN) nanotubes. In particular, for 800 nm wavelength irradiation, a BN nanotube target created a proton beam with about five times higher maximum energy and about ten times more protons than a foil target. This proton beam was used to irradiate a thick plate made of boron nitride placed in close proximity to trigger 11B (p, α) 2α fusion reactions. A suite of diagnostics consisting of Thomson parabola ion spectrometers, postshot nuclear activation measurements, neutron time-of-flight detectors, and differentially filtered solid-state nuclear track detectors were used to measure both the primary proton spectrum and the fusion products. From the primary proton spectrum, we calculated (p, n) and (α,n) reactions in the catcher and compare with our measurements. The nuclear activation results agree quantitatively and neutron signals agree qualitatively with the calculations, giving confidence that primary particle distributions can be obtained from such measurements. These results provide new insights for measuring the ion distributions inside of proton-boron fusion targets.","PeriodicalId":49925,"journal":{"name":"Laser and Particle Beams","volume":"32 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81341101","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 3

Verification and Validation of Two Hydrodynamic Methods for Simulations of High Energy Density Physics Problems 两种水动力方法在高能量密度物理问题模拟中的验证与验证

IF 0.9 4区物理与天体物理

Laser and Particle Beams Pub Date : 2022-10-11 DOI: 10.1155/2022/8720064

V. Chiravalle

引用次数: 1

Study on Damage Characteristics of Fused Silica under Ion Beam Sputtering and AMP Technique 离子束溅射和AMP技术下熔融二氧化硅损伤特性的研究

IF 0.9 4区物理与天体物理

Laser and Particle Beams Pub Date : 2022-09-27 DOI: 10.1155/2022/3740391

Wanli Zhang, F. Shi, Ci Song, Ye Tian, Shuangpeng Guo

引用次数: 0

Laser-Driven Proton-Boron Fusions: Influences of the Boron State 激光驱动质子-硼聚变:硼态的影响

IF 0.9 4区物理与天体物理

Laser and Particle Beams Pub Date : 2022-09-26 DOI: 10.1155/2022/9868807

X. Ning, T. Liang, Dong Wu, Shujun Liu, Yangchun Liu, T. Hu, Z. Sheng, J. Ren, Bowen Jiang, Yong-tao Zhao, D. Hoffmann, X.T. He

{"title":"Laser-Driven Proton-Boron Fusions: Influences of the Boron State","authors":"X. Ning, T. Liang, Dong Wu, Shujun Liu, Yangchun Liu, T. Hu, Z. Sheng, J. Ren, Bowen Jiang, Yong-tao Zhao, D. Hoffmann, X.T. He","doi":"10.1155/2022/9868807","DOIUrl":"https://doi.org/10.1155/2022/9868807","url":null,"abstract":"The proton-boron (p \u0000 \u0000 \u0000 \u0000 \u0000 11\u0000 \u0000 \u0000 \u0000 B) reaction is regarded as the holy grail of advanced fusion fuels, where the primary reaction produces 3 energetic \u0000 \u0000 α\u0000 \u0000 particles. However, due to the high nuclear bounding energy and bremsstrahlung energy losses, energy gain from the p \u0000 \u0000 \u0000 \u0000 \u0000 11\u0000 \u0000 \u0000 \u0000 B fusion is hard to achieve in thermal fusion conditions. Owing to advances in intense laser technology, the p\u0000 \u0000 \u0000 \u0000 \u0000 11\u0000 \u0000 \u0000 \u0000 B fusion has drawn renewed attention by using an intense laser-accelerated proton beam to impact a boron-11 target. As one of the most influential works in this field, Labaune et al. first experimentally found that states of boron (solid or plasma) play an important role in the yield of \u0000 \u0000 α\u0000 \u0000 particles. This exciting experimental finding rouses an attempt to measure the nuclear fusion cross section in a plasma environment. However, up to now, there is still no quantitative explanation. Based on large-scale, fully kinetic computer simulations, the inner physical mechanism of yield increment is uncovered, and a quantitative explanation is given. Our results indicate the yield increment is attributed to the reduced energy loss of the protons under the synergetic influences of degeneracy effects and collective electromagnetic effects. Our work may serve as a reference for not only analyzing or improving further experiments of the p \u0000 \u0000 \u0000 \u0000 \u0000 11\u0000 \u0000 \u0000 \u0000 B fusion but also investigating other beam-plasma systems, such as ion-driven inertial confinement fusions.","PeriodicalId":49925,"journal":{"name":"Laser and Particle Beams","volume":"117 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81177323","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 1

Compact Thomson Scattering Source Based on a Mixed Injection Assisted Laser Wakefield Accelerator 基于混合注入辅助激光尾流场加速器的紧凑型汤姆逊散射源

IF 0.9 4区物理与天体物理

Laser and Particle Beams Pub Date : 2022-09-17 DOI: 10.1155/2022/4132792

F. Tan, Xiao Hui Zhang, B. Zhu, Gang Li, Yu Chi Wu, Mingyang Yu, Yue Yang, Yong-hong Yan, W. Fan, K. Dong, F. Lu, Tianliang Zhang, Y. Gu

{"title":"Compact Thomson Scattering Source Based on a Mixed Injection Assisted Laser Wakefield Accelerator","authors":"F. Tan, Xiao Hui Zhang, B. Zhu, Gang Li, Yu Chi Wu, Mingyang Yu, Yue Yang, Yong-hong Yan, W. Fan, K. Dong, F. Lu, Tianliang Zhang, Y. Gu","doi":"10.1155/2022/4132792","DOIUrl":"https://doi.org/10.1155/2022/4132792","url":null,"abstract":"In order to establish a compact all-optical Thomson scattering source, experimental studies were conducted on the 45 TW Ti: sapphire laser facility. By including a steel wafer, mixed gas, and plasma mirror into a double-exit jet, several mechanisms, such as shock-assisted ionization injection, ionization injection, and driving laser reflection, were integrated into one source. So, the source of complexity was remarkably reduced. Electron bunches with central energy fluctuating from 90 to 160 MeV can be produced. Plasma mirrors were used to reflect the driving laser. The scattering of the reflected laser on the electron bunches led to the generation of X-ray photons. Through comparing the X-ray spots under different experimental conditions, it is confirmed that the X-ray photons are generated by Thomson scattering. For further application, the energy spectra and source size of the Thomson scattering source were measured. The unfolded spectrum contains a large amount of low-energy photons besides a peak near 67 keV. Through importing the electron energy spectrum into the Monte Carlo simulation code, the different contributions of the photons with small and large emitting angles can be used to explain the origin of the unfolded spectrum. The maximum photon energy extended to about 500 keV. The total photon production was 107/pulse. The FWHM source size was about 12 μm.","PeriodicalId":49925,"journal":{"name":"Laser and Particle Beams","volume":"24 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78134994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Alpha-Particle Generation from H-11B Fusion Initiated by Laser-Accelerated Boron Ions 激光加速硼离子引发H-11B聚变产生α粒子

IF 0.9 4区物理与天体物理

Laser and Particle Beams Pub Date : 2022-09-12 DOI: 10.1155/2022/5733475

Defeng Kong, Shirui Xu, Y. Shou, Ying Gao, Z. Mei, Z. Pan, Zhipeng Liu, Zhengxuan Cao, Yulan Liang, Z.-K. Peng, Pengjie Wang, Di Luo, Yang Li, Zhi Li, H.B. Xie, Guoqiang Zhang, W. Luo, Jiarui Zhao, Shiyou Chen, Y. Geng, Yanying Zhao, Jianming Xue, Xueqing Yan, Wenjun Ma

引用次数: 4

Intelligent Optimization of Parameters for Tens of MA-Class Z-Pinch Accelerators 数十种ma级z夹紧加速器参数的智能优化

IF 0.9 4区物理与天体物理

Laser and Particle Beams Pub Date : 2022-08-19 DOI: 10.1155/2022/2932175

Siyuan Fan, Hao Wei, Zhenzhou Gong, Xu He, F. Sun, A. Qiu

引用次数: 1

Multiplication Processes in High-Density H-11B Fusion Fuel 高密度H-11B聚变燃料的增殖过程

IF 0.9 4区物理与天体物理

Laser and Particle Beams Pub Date : 2022-07-08 DOI: 10.1155/2022/3952779

F. Belloni

引用次数: 3

Particles Detection System with CR-39 Based on Deep Learning 基于深度学习的CR-39粒子检测系统

IF 0.9 4区物理与天体物理

Laser and Particle Beams Pub Date : 2022-06-30 DOI: 10.1155/2022/3820671

Gal Amit, Idan Mosseri, Ofir Even-Hen, Nadav Schneider, Elad Fisher, H. Datz, E. Cohen, N. Nissim

{"title":"Particles Detection System with CR-39 Based on Deep Learning","authors":"Gal Amit, Idan Mosseri, Ofir Even-Hen, Nadav Schneider, Elad Fisher, H. Datz, E. Cohen, N. Nissim","doi":"10.1155/2022/3820671","DOIUrl":"https://doi.org/10.1155/2022/3820671","url":null,"abstract":"We present a novel method that we call FAINE, fast artificial intelligence neutron detection system. FAINE automatically classifies tracks of fast neutrons on CR-39 detectors using a deep learning model. This method was demonstrated using a LANDAUER Neutrak® fast neutron dosimetry system, which is installed in the External Dosimetry Laboratory (EDL) at Soreq Nuclear Research Center (SNRC). In modern fast neutron dosimetry systems, after the preliminary stages of etching and imaging of the CR-39 detectors, the third stage uses various types of computer vision systems combined with a manual revision to count the CR-39 tracks and then convert them to a dose in mSv units. Our method enhances these modern systems by introducing an innovative algorithm, which uses deep learning to classify all CR-39 tracks as either real neutron tracks or any other sign such as dirt, scratches, or even cleaning remainders. This new algorithm makes the third stage of manual CR-39 tracks revision superfluous and provides a completely repeatable and accurate way of measuring either neutrons flux or dose. The experimental results show a total accuracy rate of 96.7% for the true positive tracks and true negative tracks detected by our new algorithm against the current method, which uses computer vision followed by manual revision. This algorithm is now in the process of calibration for both alpha-particles detection and fast neutron spectrometry classification and is expected to be very useful in analyzing results of proton-boron11 fusion experiments. Being fully automatic, the new algorithm will enhance the quality assurance and effectiveness of external dosimetry, will lower the uncertainty for the reported dose measurements, and might also enable lowering the system’s detection threshold.","PeriodicalId":49925,"journal":{"name":"Laser and Particle Beams","volume":"10 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80131416","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 1

Analysis of the p-11B Fusion Scenario with Compensation of the Transfer of Kinetic Energy of Protons and Alpha Particles to the Gas Medium by the Electric Field 电场补偿质子和α粒子动能向气体介质转移的p-11B聚变情景分析

IF 0.9 4区物理与天体物理

Laser and Particle Beams Pub Date : 2022-06-28 DOI: 10.1155/2022/7473118

M. Shmatov

引用次数: 2