Role of resistivity gradient in laser-driven ion acceleration

被引：20

作者：

Gizzi, L. A. ^{[1
,2
]}

Betti, S. ^{[1
,2
,5
,6
]}

Foerster, E. ^{[3
,7
]}

Giulietti, D. ^{[1
,2
,8
]}

Hoefer, S. ^{[3
,7
]}

Koester, P. ^{[1
,2
]}

Labate, L. ^{[1
,2
]}

Loetzsch, R. ^{[3
,7
]}

Robinson, A. P. L. ^{[4
]}

Uschmann, I. ^{[3
]}

机构：

[1] CNR, UOS Adriano Gozzini, Ist Nazl Ott, ILIL, I-56100 Pisa, Italy

[2] Ist Nazl Fis Nucl, Sez Pisa, Pisa, Italy

[3] Univ Jena, Inst Opt & Quantenelekt, D-07743 Jena, Germany

[4] Rutherford Appleton Lab, Cent Laser Facil, Chilton OX11 0QX, England

[5] Accademia Navale, Livorno, Italy

[6] Univ Pisa, Dipartimento Ingn Telecomunicaz, I-56100 Pisa, Italy

[7] Helmholtz Inst Jena, D-07743 Jena, Germany

[8] Univ Pisa, Dipartimento Fis, Pisa, Italy

来源：

PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS | 2011年 / 14卷 / 01期

关键词：

FAST-ELECTRON TRANSPORT; PROTON-BEAMS; SOLID EXPERIMENTS; IGNITION; PLASMAS; RAYS;

D O I：

10.1103/PhysRevSTAB.14.011301

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

It was predicted that, when a fast electron beam with some angular spread is normally incident on a resistivity gradient, magnetic field generation can occur that can inhibit beam propagation [A. R. Bell et al., Phys. Rev. E 58, 2471 (1998)]. This effect can have consequences on the laser-driven ion acceleration. In the experiment reported here, we compare ion emission from laser irradiated coated and uncoated metal foils and we show that the ion beam from the coated target has a much smaller angular spread. Detailed hybrid numerical simulations confirm that the inhibition of fast electron transport through the resistivity gradient may explain the observed effect.

引用

页数：5

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