Target charging effects on proton acceleration during high-intensity short-pulse laser-solid interactions

被引：18

作者：

Beg, FN

Wei, MS

Dangor, AE

Gopal, A

Tatarakis, M

Krushelnick, K

Gibbon, P

Clark, EL

Evans, RG

Lancaster, KL

Norreys, PA

Ledingham, KWD

McKenna, P

Zepf, M

机构：

[1] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, London SW7 2BZ, England

[2] KFA Julich, Res Ctr, ZAM, D-52425 Julich, Germany

[3] AWE Plc, Reading RG7 4PR, Berks, England

[4] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England

[5] Univ Strathclyde, Dept Phys, Glasgow G4 0NG, Lanark, Scotland

[6] Queens Univ Belfast, Dept Phys, Belfast BT7 1NN, Antrim, North Ireland

来源：

APPLIED PHYSICS LETTERS | 2004年 / 84卷 / 15期

关键词：

D O I：

10.1063/1.1689748

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report results from experiments performed at the Rutherford Appleton Laboratory using the VULCAN laser facility (I>5x10(19) W cm(-2)). Single wire targets were used, and on some shots additional objects were placed near the target. These were positioned so that they were not irradiated by the laser. Proton emission from single wire targets was observed as radially symmetric structures ("stripes") in both the forward and backward directions, and was due to plasma sheath acceleration around the wire. The presence of objects in the vicinity of the interaction had a significant effect on the angular emission pattern of protons from the primary target. Importantly, the secondary object was also observed to be a source of energetic proton emission. (C) 2004 American Institute of Physics.

引用

页码：2766 / 2768

页数：3

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