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Preface to Special Topic: Extreme High-Field Physics Driven by Lasers

Matter and Radiation at Extremes 2019年第6期4卷 63-64页

作者： Zhengming Sheng bjorn manuel hegelich Stefan Weber Yan Yin Shanghai Jiao Tong University ShanghaiChina and University of StrathclydeGlasgowUnited Kingdom University of Texas at Austin AustinTexas 78712USA ELI-Beamlines Institute of PhysicsAcademy of Sciences of the Czech RepublicPragueCzech Republic Department of Physics National University of Defense TechnologyChangshaChina

With the continuous development of high power laser technologies,lasers with peak power at 10 petawatt(PW)or above are becoming available soon in a few laboratories *** lasers may be focused to an intensity above 1023 W/cm2,at which heavy elements such as uranium can be stripped of electrons,entirely leaving behind pure atomic nuclei,and electrons can be accelerated to more than 10 *** are entering an unprecedented regime of laser-matter interactions,where collective effects,relativistic effects,and quantum electrodynamic(QED)effects all play significant *** rich nonlinear physics in this regime could be tested experimentally,such as radiation reaction,gamma-ray and pair production via different processes,laser driven nuclear physics,laser-vacuum polarization,*** is expected that the new understanding of physics for these extreme high field conditions will lead to a wide range of applications.

关键词： polarization regime collective

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The acceleration of a high-charge electron bunch to 10 GeV in a 10-cm nanoparticle-assisted wakefield accelerator

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Matter and Radiation at Extremes 2024年第1期9卷 15-24页

作者： Constantin Aniculaesei Thanh Ha Samuel Yoffe Lance Labun Stephen Milton Edward McCary Michael M.Spinks Hernan J.Quevedo Ou Z.Labun Ritwik Sain Andrea Hannasch Rafal Zgadzaj Isabella Pagano Jose A.Franco-Altamirano Martin L.Ringuette Erhart Gaul Scott V.Luedtke Ganesh Tiwari Bernhard Ersfeld Enrico Brunetti Hartmut Ruhl Todd Ditmire Sandra Bruce Michael E.Donovan Michael C.Downer Dino A.Jaroszynski bjorn manuel hegelich University of Texas at Austin AustinTexas 78712USA SUPA Department of Physics University of StrathclydeGlasgowScotland G4 ONGUnited Kingdom Tau Systems Inc.AustinTexas 78701USA Lawrence Livermore National Laboratory LivermoreCalifornia 94550USA Los Alamos National Laboratory Los AlamosNew Mexico 87545USA Brookhaven National Laboratory UptonNew York 11973USA Ludwig-Maximilians-Universität MunichGermany

An intense laser pulse focused onto a plasma can excite nonlinear plasma *** appropriate conditions,electrons from the background plasma are trapped in the plasma wave and accelerated to ultra-relativistic *** scheme is called a laser wakefield *** this work,we present results from a laser wakefield acceleration experiment using a petawatt-class laser to excite the wakefields as well as nanoparticles to assist the injection of electrons into the accelerating phase of the *** find that a 10-cm-long,nanoparticle-assisted laser wakefield accelerator can generate 340 pC,10±1.86 GeV electron bunches with a 3.4 GeV rms convolved energy spread and a 0.9 mrad rms *** can also produce bunches with lower energies in the 4–6 GeV range.

关键词： acceleration nanoparticle charge

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Full-aperture backscatter diagnostics and applications at the Texas Petawatt Laser facility

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Chinese Optics Letters 2014年第A2期12卷 152-156页

作者： C. Wang C. Wagner G. Dyer E. Gaul N. Kandadai N. Riley D. Kuk E. McCary A. Meadows I. Pomerantz M. Spinks T. Borger A. Bernstein M. Donovan M. Martinez T. Ditmire bjorn M. hegelich Center for High Energy Density Science University of Texas Austin Texas 78712

In this paper, we present the development and application of a full-aperture baekscatter diagnostics system at the Texas Petawatt Laser （TPW） facility. The diagnostic system includes three independent diagnostic stations. With this system, we obtained TPW on-shot focus properties, and high-harmonic spectral emission flOln solid foils （e.g., Cu and Al） and their Si substrate in an experiment to study laser hole boring, which show the hole-boring mechanism at relativistic intensities. The measured on-target full-power focal spots from ultrathin film targets help determine the optimum target thickness at certain laser contrast parameters for particle acceleration and neutron generation experiment, which is also a relative measurement of shot-to- shot intensity fluctuations.

关键词： 320.7090 Ultrafast lasers 020.2649 Strong field laser physics 300.6360 Spectroscopy, laser 350.5400 Plasmas

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