Generation of high-quality proton beam in nanobrush targets driven by PW laser pulse
-
摘要: 超强激光加速产生的高能质子束源在基础物理研究、材料科学、生物医疗等领域具有广泛应用前景。基于激光聚变研究中心的SILEX-II装置，开展了高对比度飞秒激光驱动纳米刷靶质子加速实验研究。采用等离子体镜技术进一步提升激光对比度，有效降低了预脉冲对纳米刷靶结构的影响。相比于平面靶，采用纳米刷靶质子截止能量提高到1.5倍，质子束产额增加近一个量级，成功验证了超高功率密度下纳米刷靶对激光离子加速的增强效果，并且有效提升了质子束空间分布的均匀性。研究结果为高品质质子束源的产生和应用提供了技术途径。Abstract: High-energy proton beam sources produced by ultra-intense laser acceleration have wide application prospects in basic physics, materials science, biomedical research and other fields. Based on SILEX-II device of Laser Fusion Research Center, the experimental studies on proton acceleration of nanobrush targets driven by high-contrast femtosecond PW laser pulse have been carried out. Plasma mirror technology was used to further improve the laser contrast, which effectively reduces the influence of pre-pulse on the structure of the nanobrush target. Compared with planar target, the proton cut-off energy of nanobrush targets increased to 1.5 times, and the proton beam yield increased by nearly one order of magnitude. This successfully verifies the enhancement of nanobrush targets on laser ion acceleration at ultra-high power density, and the improved uniformity of the proton beam spatial distribution. These results provide a technical way for the generation and application of high-quality proton beam sources.
-
Key words:
- nanobrush targets /
- laser ion acceleration /
- plasma mirror /
- high-quality proton beam
-
图 1 高对比度激光纳米刷靶质子加速实验排布
Figure 1. High-contrast laser nanobrush-target proton acceleration experiment configuration
图 4 不同激光功率下两种靶的实验结果对比
Figure 4. Comparison of experimental results of two targets at different laser powers
-
[1] Tabak M, Clark D S, Hatchett S P, et al. Review of progress in fast ignition[J]. Physics of Plasmas, 2005, 12: 057305. doi: 10.1063/1.1871246 [2] Cai Hongbo, Mima K, Zhou Weimin, et al. Enhancing the number of high-energy electrons deposited to a compressed pellet via double cones in fast ignition[J]. Physical Review Letters, 2009, 102: 245001. doi: 10.1103/PhysRevLett.102.245001 [3] Roth M, Cowan T E, Key M H, et al. Fast ignition by intense laser-accelerated proton beams[J]. Physical Review Letters, 2001, 86(3): 436-439. doi: 10.1103/PhysRevLett.86.436 [4] Malka V, Fritzler S, Lefebvre E, et al. Practicability of protontherapy using compact laser systems[J]. Medical Physics, 2004, 31(6): 1587-1592. doi: 10.1118/1.1747751 [5] Wang Jian, Zhao Zongqing, He Weihua, et al. Radiography of a Kα X-ray source generated through ultrahigh picosecond laser–nanostructure target interaction[J]. Chinese Optics Letters, 2015, 13: 031001. doi: 10.3788/COL201513.031001 [6] Curtis A, Hollinger R, Calvi C, et al. Ion acceleration and D-D fusion neutron generation in relativistically transparent deuterated nanowire arrays[J]. Physical Review Research, 2021, 3: 043181. doi: 10.1103/PhysRevResearch.3.043181 [7] Chao Yue, Cao Lihua, Zheng Chunyang, et al. Enhanced proton acceleration from laser interaction with a tailored nanowire target[J]. Applied Sciences, 2022, 12: 1153. doi: 10.3390/app12031153 [8] Cao Lihua, Gu Yuqiu, Zhao Zongqing, et al. Enhanced absorption of intense short-pulse laser light by subwavelength nanolayered target[J]. Physics of Plasmas, 2010, 17: 043103. doi: 10.1063/1.3360298 [9] Cao Lihua, Gu Yuqiu, Zhao Zongqing, et al. Control of the hot electrons produced by laser interaction with nanolayered target[J]. Physics of Plasmas, 2010, 17: 103106. doi: 10.1063/1.3481463 [10] Eftekhari-Zadeh E, Blümcke M S, Samsonova Z, et al. Laser energy absorption and X-ray generation in nanowire arrays irradiated by relativistically intense ultra-high contrast femtosecond laser pulses[J]. Physics of Plasmas, 2022, 29: 013301. doi: 10.1063/5.0064364 [11] Zhao Zongqing, Cao Lihua, Cao Leifeng, et al. Acceleration and guiding of fast electrons by a nanobrush target[J]. Physics of Plasmas, 2010, 17: 123108. doi: 10.1063/1.3507292 [12] Ji Yanling, Jiang Gang, Wu Weidong, et al. Efficient generation and transportation of energetic electrons in a carbon nanotube array target[J]. Applied Physics Letters, 2010, 96: 041504. doi: 10.1063/1.3298016 [13] Li Boyuan, Zhang Zhimeng, Wang Jian, et al. Transport of fast electrons in a nanowire array with collisional effects included[J]. Physics of Plasmas, 2015, 22: 123118. doi: 10.1063/1.4938515 [14] Yang Yue, Li Boyuan, Yan Yonghong, et al. Investigation on the transport efficiency of fast electrons with double-layer Kα fluorescence measurement[J]. Physics of Plasmas, 2019, 26: 073101. doi: 10.1063/1.5096933 [15] Yang Yue, Li Boyuan, Wu Yuchi, et al. Manipulation and optimization of electron transport by nanopore array targets[J]. Plasma Science and Technology, 2021, 23: 015001. doi: 10.1088/2058-6272/abbd37 [16] Ong J F, Ghenuche P, Tanaka K A. Electron transport in a nanowire irradiated by an intense laser pulse[J]. Physical Review Research, 2021, 3: 033262. doi: 10.1103/PhysRevResearch.3.033262 [17] Bruner N, Schleifer E, Palchan T, et al. Generation of fast protons by interaction of modest laser intensities with H2O “snow” nano-wire targets[J]. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2011, 653(1): 156-158. [18] Margarone D, Klimo O, Kim I J, et al. Laser-driven proton acceleration enhancement by nanostructured foils[J]. Physical Review Letters, 2012, 109: 234801. doi: 10.1103/PhysRevLett.109.234801 [19] Ceccotti T, Floquet V, Sgattoni A, et al. Evidence of resonant surface-wave excitation in the relativistic regime through measurements of proton acceleration from grating targets[J]. Physical Review Letters, 2013, 111: 185001. doi: 10.1103/PhysRevLett.111.185001 [20] Ma Wenjun, Kim I J, Yu Jinqing, et al. Laser acceleration of highly energetic carbon ions using a double-layer target composed of slightly underdense plasma and ultrathin foil[J]. Physical Review Letters, 2019, 122: 014803. doi: 10.1103/PhysRevLett.122.014803 [21] Yu Jinqing, Zhou Weimin, Cao Lihua, et al. Enhancement in coupling efficiency from laser to forward hot electrons by conical nanolayered targets[J]. Applied Physics Letters, 2012, 100: 204101. doi: 10.1063/1.4718735 [22] Park J, Tommasini R, Shepherd R, et al. Absolute laser energy absorption measurement of relativistic 0.7 ps laser pulses in nanowire arrays[J]. Physics of Plasmas, 2021, 28: 023302. doi: 10.1063/5.0035174 [23] Khaghani D, Lobet M, Borm B, et al. Enhancing laser-driven proton acceleration by using micro-pillar arrays at high drive energy[J]. Scientific Reports, 2017, 7: 11366. doi: 10.1038/s41598-017-11589-z [24] Cristoforetti G, Londrillo P, Singh P K, et al. Transition from coherent to stochastic electron heating in ultrashort relativistic laser interaction with structured targets[J]. Scientific Reports, 2017, 7: 1479. doi: 10.1038/s41598-017-01677-5 -
下载:
点击查看大图
图(5)
计量
- 文章访问数: 406
- HTML全文浏览量: 202
- PDF下载量: 129
- 被引次数: 0
