Ion acceleration driven by ultra-short, ultra-intense pulses

由超短、超强脉冲驱动的离子加速

• 批准号: EP/F021968/1
• 负责人: Marco Borghesi
• 金额: $ 16.36万
• 依托单位: Queen's University Belfast
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2008
• 资助国家: 英国
• 起止时间: 2008 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FF021968%2F1
• 关键词: Ion; acceleration; driven; ultra; short

The project aims to investigate an important process taking place during the interaction of very high power laser radiation with matter, namely the acceleration of ions to very high energies. This process, capable to reach over micormetric distances the energies that are otherwise obtained in large scale accelerators, has been made possible very recently due to the development of a new class of laser systems based on a principle called Chirped Pulse Amplification. The ions are accelerated by ultralarge electric fields set at thesurface of laser irradiated foils by escaping high energy electrons which have acquired energy directly from the laser. The energy of the ion scales with the intensity of the laser radiation used to accelerate them, and so called scaling laws relationships can be used to predict energies reachable in the future and to compare experimental results with relevant theory in order to test the understanding of the accelerating mechanisms.A novel laser facility, accessing unprecedented intensity regimes, called GEMINI will be opened up to experiments in the second half of 2007. This facility will achieve enormous fluxes of laser energies (larger than 10^21 W/cm^2) by concentrating light in ultrashort pulses, of duration 30 femtoseconds (1 fs =10^-15 s), in spots with radius of the order of a micrometer. Theoretical predictions suggest that at this intensities it will be possible to accelerate protons up to energies close to the ones required for groundbreaking applications such as cancer radiotherapy. This projects aims to exploit the unique opportunities offered by the GEMINI development to investigate ion acceleration in this novel ultraintense, ultrashort regime, and understand the details of the mechanisms taking place. We also aim to investigate some unexplored aspects of laser-matter interactions in the ultraintense regime by applying a technique (proton probing) developed by our group to diagnose the interaction of the GEMINI laser pulses with solid and gaseous targets.Another important aim of the project is to train a PhD student in this exciting area of research, and provide him/her with the skills necessary to continue a research career and become a skilled user of future scientific installations.

该项目的目的是研究在极高功率激光辐射与物质相互作用期间发生的一个重要过程，即离子加速到极高能量。这个过程，能够达到微米距离的能量，否则在大型加速器中获得，已经成为可能，最近由于一类新的激光系统的发展，基于一个原则，称为啁啾脉冲放大。在激光辐照的金属箔表面设置超大电场，通过逃逸直接从激光获得能量的高能电子来加速离子。离子的能量与用于加速它们的激光辐射的强度成比例，并且所谓的比例律关系可以用于预测未来可达到的能量，并且将实验结果与相关理论进行比较，以便测试对加速机制的理解。GEMINI将于2007年下半年开放实验。该设施将通过将持续时间为30飞秒（1 fs =10^-15 s）的超短脉冲中的光集中在半径为微米量级的斑点中，实现巨大的激光能量通量（大于10^21 W/cm^2）。理论预测表明，在这种强度下，将有可能将质子加速到接近癌症放射治疗等突破性应用所需的能量。该项目旨在利用GEMINI开发提供的独特机会，研究这种新型超强超短机制中的离子加速，并了解发生机制的细节。我们还打算通过应用一种技术来研究在超强激光区激光与物质相互作用的一些未被探索的方面（质子探测）由我们的小组开发，用于诊断GEMINI激光脉冲与固体和气体目标的相互作用。该项目的另一个重要目的是培养这一令人兴奋的研究领域的博士生，并为他/她提供继续研究生涯所需的技能，并成为未来科学装置的熟练用户。

项目成果

Efficient post-acceleration of protons in helical coil targets driven by sub-ps laser pulses.

• DOI: 10.1038/s41598-017-06985-4
• 发表时间: 2017-09-07
• 期刊: Scientific reports
• 影响因子: 4.6
• 作者: Ahmed H;Kar S;Cantono G;Hadjisolomou P;Poye A;Gwynne D;Lewis CLS;Macchi A;Naughton K;Nersisyan G;Tikhonchuk V;Willi O;Borghesi M
• 通讯作者: Borghesi M

Ion source development and radiobiology applications within the LIBRA project

LIBRA 项目中的离子源开发和放射生物学应用

• DOI: 10.1117/12.888262
• 发表时间: 2011
• 作者: Borghesi M

Optimisation of laser driven proton beams by an innovative target scheme

通过创新的目标方案优化激光驱动质子束

• DOI: 10.1088/1748-0221/12/06/c06025
• 发表时间: 2017
• 期刊: Journal of Instrumentation
• 影响因子: 1.3
• 作者: Ahmed H

Scintillator-based ion beam profiler for diagnosing laser-accelerated ion beams

基于闪烁体的离子束分析仪，用于诊断激光加速离子束

• DOI: 10.1117/12.888967
• 发表时间: 2011
• 作者: Green J

Time-resolved characterization of the formation of a collisionless shock

无碰撞激波形成的时间分辨特征

• DOI: 10.48550/arxiv.1304.6524
• 发表时间: 2013
• 作者: Ahmed H