用于短脉冲激光等离子体实验的成像质子谱仪。

An imaging proton spectrometer for short-pulse laser plasma experiments.

作者信息

Chen Hui, Hazi A U, van Maren R, Chen S N, Fuchs J, Gauthier M, Le Pape S, Rygg J R, Shepherd R

机构信息

Lawrence Livermore National Laboratory, Livemore, California 94551, USA.

出版信息

Rev Sci Instrum. 2010 Oct;81(10):10D314. doi: 10.1063/1.3483212.

DOI:10.1063/1.3483212

PMID:21033840

Abstract

The ultraintense short pulse laser pulses incident on solid targets can generate energetic protons. In addition to their potentially important applications such as in cancer treatments and proton fast ignition, these protons are essential to understand the complex physics of intense laser plasma interaction. To better characterize these laser-produced protons, we designed and constructed a novel spectrometer that will not only measure proton energy distribution with high resolution but also provide its angular characteristics. The information obtained from this spectrometer compliments those from commonly used diagnostics including radiochromic film packs, CR39 nuclear track detectors, and nonimaging magnetic spectrometers. The basic characterizations and sample data from this instrument are presented.

摘要

入射到固体靶上的超强短脉冲激光可以产生高能质子。除了在癌症治疗和质子快点火等潜在重要应用外，这些质子对于理解强激光与等离子体相互作用的复杂物理过程至关重要。为了更好地表征这些激光产生的质子，我们设计并构建了一种新型光谱仪，它不仅能高分辨率测量质子能量分布，还能提供其角特性。从该光谱仪获得的信息补充了常用诊断方法（包括放射变色胶片包、CR39核径迹探测器和非成像磁谱仪）所提供的信息。本文介绍了该仪器的基本特性和样本数据。