Experimental Observation of Proton Bunch Modulation in a Plasma at Varying Plasma Densities.
Experimental Observation of Proton Bunch Modulation in a Plasma at Varying Plasma Densities.
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DOI：
10.1103/physrevlett.122.054802
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发表时间：
2018-09
影响因子：
8.6
通讯作者：
E. Adli;Arun Ahuja;O. Apsimon;R. Apsimon;A. Bachmann;Diego Barrientos;M. Barros;J. Batkiewicz;F. Batsch;J. Bauche;V. K. B. Olsen;M. Bernardini;B. Biskup;A. Boccardi;T. Bogey;T. Bohl;Chiara Bracco;F. Braunmüller;S. Burger;Graeme Burt;S. Bustamante;B. Buttenschön;Allen Caldwell;M. Cascella;J. Chappell;E. Chevallay;M. Chung;D. Cooke;H. Damerau;L. Deacon;L. Deubner;A. Dexter;S. Doebert;J. Farmer;V. Fedosseev;G. Fior;R. Fiorito;R. Fonseca;F. Friebel;L. Garolfi;S. Gessner;I. Gorgisyan;A. Gorn;Eduardo Granados;O. Grulke;E. Gschwendtner;A. Guerrero;J. Hansen;A. Helm;J. R. Henderson;C. Hessler;W. Hoe;M. Hüther;M. Ibison;L. Jensen;S. Jolly;F. Keeble;Shinseog Kim;F. Kraus;T. Lefèvre;G. LeGodec;Yichen Li;Shuyi Liu;N. Lopes;K. Lotov;L. M. Brun;M. Martyanov;S. Mazzoni;D. Godoy;V. A. Minakov;James Mitchell;J. Molendijk;R. Mompo;J. Moody;M. Moreira;P. Muggli;C. Mutin;E. Öz;E. Ozturk;C. Pasquino;A. Pardons;F. Asmus;K. Pepitone;A. Perera;A. Petrenko;S. Pitman;G. Plyushchev;A. Pukhov;S. Rey;K. Rieger;Hartmut Ruhl;Janet Schmidt;I. Shalimova;E. Shaposhnikova;P. Sherwood;Luis O. Silva;L. Soby;A. Sosedkin;R. Speroni;R. Spitsyn;P. Tuev;M. Turner;F. Velotti;L. Verra;V. Verzilov;Jorge Vieira;H. Vincke;Carsten Welsch;B. Williamson;M. Wing;B. Woolley;G. Xia
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作者：
E. Adli;Arun Ahuja;O. Apsimon;R. Apsimon;A. Bachmann;Diego Barrientos;M. Barros;J. Batkiewicz;F. Batsch;J. Bauche;V. K. B. Olsen;M. Bernardini;B. Biskup;A. Boccardi;T. Bogey;T. Bohl;Chiara Bracco;F. Braunmüller;S. Burger;Graeme Burt;S. Bustamante;B. Buttenschön;Allen Caldwell;M. Cascella;J. Chappell;E. Chevallay;M. Chung;D. Cooke;H. Damerau;L. Deacon;L. Deubner;A. Dexter;S. Doebert;J. Farmer;V. Fedosseev;G. Fior;R. Fiorito;R. Fonseca;F. Friebel;L. Garolfi;S. Gessner;I. Gorgisyan;A. Gorn;Eduardo Granados;O. Grulke;E. Gschwendtner;A. Guerrero;J. Hansen;A. Helm;J. R. Henderson;C. Hessler;W. Hoe;M. Hüther;M. Ibison;L. Jensen;S. Jolly;F. Keeble;Shinseog Kim;F. Kraus;T. Lefèvre;G. LeGodec;Yichen Li;Shuyi Liu;N. Lopes;K. Lotov;L. M. Brun;M. Martyanov;S. Mazzoni;D. Godoy;V. A. Minakov;James Mitchell;J. Molendijk;R. Mompo;J. Moody;M. Moreira;P. Muggli;C. Mutin;E. Öz;E. Ozturk;C. Pasquino;A. Pardons;F. Asmus;K. Pepitone;A. Perera;A. Petrenko;S. Pitman;G. Plyushchev;A. Pukhov;S. Rey;K. Rieger;Hartmut Ruhl;Janet Schmidt;I. Shalimova;E. Shaposhnikova;P. Sherwood;Luis O. Silva;L. Soby;A. Sosedkin;R. Speroni;R. Spitsyn;P. Tuev;M. Turner;F. Velotti;L. Verra;V. Verzilov;Jorge Vieira;H. Vincke;Carsten Welsch;B. Williamson;M. Wing;B. Woolley;G. Xia
我们为观测到长的相对论性质子束在稠密等离子体中传播时的完全横向自调制提供了直接的实验证据。由于径向尾场效应，质子束离开等离子体时具有周期性的密度调制。我们表明，这种调制是由一个相对论性电离前沿引发的，该电离前沿是由与质子束共同传播的强激光脉冲产生的。调制从种子点开始在质子束的长度上延伸。通过在一个数量级上改变等离子体密度，我们表明调制频率与预期的对等离子体密度的依赖关系相符，即它等于等离子体频率，这与理论预期一致。
We give direct experimental evidence for the observation of the full transverse self-modulation of a long, relativistic proton bunch propagating through a dense plasma. The bunch exits the plasma with a periodic density modulation resulting from radial wakefield effects. We show that the modulation is seeded by a relativistic ionization front created using an intense laser pulse copropagating with the proton bunch. The modulation extends over the length of the proton bunch following the seed point. By varying the plasma density over one order of magnitude, we show that the modulation frequency scales with the expected dependence on the plasma density, i.e., it is equal to the plasma frequency, as expected from theory.