Near-100 MeV protons via a laser-driven transparency-enhanced hybrid acceleration scheme.
Near-100 MeV protons via a laser-driven transparency-enhanced hybrid acceleration scheme.
复制标题
DOI：
10.1038/s41467-018-03063-9
复制
发表时间：
2018-02-20
影响因子：
16.6
通讯作者：
McKenna P
中科院分区：
文献类型：
--
作者：
Higginson A;Gray RJ;King M;Dance RJ;Williamson SDR;Butler NMH;Wilson R;Capdessus R;Armstrong C;Green JS;Hawkes SJ;Martin P;Wei WQ;Mirfayzi SR;Yuan XH;Kar S;Borghesi M;Clarke RJ;Neely D;McKenna P
紧凑型激光等离子体离子源的潜在应用范围激发了新的加速方案的发展，以提高可实现的离子能量和转换效率。虽然激光-等离子体相互作用的演变性质可能会限制单个加速机制的有效性，但它也可以使混合方案的发展成为可能，从而允许对所产生的离子束的特性进行额外程度的控制。在这里，我们报告了一个实验演示，通过辐射压力-鞘层混合加速方案，在线性偏振激光脉冲照射的超薄箔中，有效地将质子加速到超过94 MeV的能量。这是通过双峰静电场结构发生的，在最佳箔厚度下，相对论透明度和相关的超热电子射流显着增强。讨论了这种混合情况发生的参数范围，并探讨了下一代多千瓦时激光设备驱动的离子加速的影响。将激光离子加速放大到更高的离子能量是一个挑战。本文介绍了一种基于线性偏振激光与箔靶相互作用的相对论诱导透明机制的混合加速方案及其在高功率激光应用中的应用前景。
The range of potential applications of compact laser-plasma ion sources motivates the development of new acceleration schemes to increase achievable ion energies and conversion efficiencies. Whilst the evolving nature of laser-plasma interactions can limit the effectiveness of individual acceleration mechanisms, it can also enable the development of hybrid schemes, allowing additional degrees of control on the properties of the resulting ion beam. Here we report on an experimental demonstration of efficient proton acceleration to energies exceeding 94 MeV via a hybrid scheme of radiation pressure-sheath acceleration in an ultrathin foil irradiated by a linearly polarised laser pulse. This occurs via a double-peaked electrostatic field structure, which, at an optimum foil thickness, is significantly enhanced by relativistic transparency and an associated jet of super-thermal electrons. The range of parameters over which this hybrid scenario occurs is discussed and implications for ion acceleration driven by next-generation, multi-petawatt laser facilities are explored. It is a challenge to scale up laser-ion acceleration to higher ion energies. Here the authors demonstrate a hybrid acceleration scheme based on the relativistic induced transparency mechanism using linearly polarised laser interaction with foil targets and its future implication in using high power lasers.
登录
查看更多内容
影响因子：
2.2
作者：
Padda, H.;King, M.;McKenna, P.
通讯作者：
McKenna, P.
影响因子：
1.1
作者：
Bulanov, SV;Khoroshkov, VS
通讯作者：
Khoroshkov, VS
影响因子：
16.6
作者：
Dromey B;Coughlan M;Senje L;Taylor M;Kuschel S;Villagomez-Bernabe B;Stefanuik R;Nersisyan G;Stella L;Kohanoff J;Borghesi M;Currell F;Riley D;Jung D;Wahlström CG;Lewis CL;Zepf M
通讯作者：
Zepf M
影响因子：
2.2
作者：
Albright, B. J.;Yin, L.;Fernandez, J. C.
通讯作者：
Fernandez, J. C.
影响因子：
3.3
作者：
Powell, H. W.;King, M.;McKenna, P.
通讯作者：
McKenna, P.