论文标题
准单调的短时持续时间紧凑型质子源，用于探测物质的高能量状态
A quasi-monoenergetic short time duration compact proton source for probing high energy density states of matter
论文作者
论文摘要
我们报告了高方向，狭窄的能带的发展，以高重复速率运行的短时持续时间质子束，适合于高能等离子体中停止功率以及其他应用。质子是用超短脉冲激光与固体靶相互作用的，并使用基于紧凑的磁铁的能量选择器将其转换为铅笔状的窄带梁。我们在实验上证明了质子束的产生，其能量为500 keV，能量的散布远低于10％，脉冲持续时间为260 ps。该梁的能量损失以2 $ $ m厚的固体甲板靶标的测量，发现在理论预测的1％以内。质子脉冲的短时间持续时间使其特别适合于涉及在激光 - 物质相互作用实验中产生的高瞬时等离子体状态的应用，特别是质子停止功率的测量值。
We report on the development of a highly directional, narrow energy band, short time duration proton beam operating at high repetition rate, suitable for measurements of stopping power in high energy density plasmas as well as other applications. The protons are generated with an ultrashort-pulse laser interacting with a solid target and converted to a pencil-like narrow-band beam using a compact magnet-based energy selector. We experimentally demonstrate the production of a proton beam with an energy of 500 keV and energy spread well below 10%, and a pulse duration of 260 ps. The energy loss of this beam is measured in a 2 $μ$m thick solid Mylar target and found to be in within 1% of theoretical predictions. The short time duration of the proton pulse makes it particularly well suited for applications involving the probing of highly transient plasma states produced in laser-matter interaction experiments, in particular measurements of proton stopping power.
