Pulsed x-ray imaging of high-density objects using a ten picosecond high-intensity laser driver
Pulsed x-ray imaging of high-density objects using a ten picosecond high-intensity laser driver
复制标题
使用 10 皮秒高强度激光驱动器对高密度物体进行脉冲 X 射线成像
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
D. Neely
中科院分区：
文献类型：
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作者：
D. Rusby;C. Brenner;C. Armstrong;L. Wilson;R. Clarke;A. Alejo;H. Ahmed;N. M. H. Butler;D. Haddock;A. Higginson;A. Mcclymont;S. R. Mirfayzi;C. Murphy;M. Notley;P. Oliver;R. Allott;C. Hernandez;Satyabrata Kar;Paul McKenna;D. Neely
脉冲（亚纳秒）、高能量（高达几MeV）和明亮的点状X射线源对于需要通过大型和密集物体成像的工业和安全应用非常有前途。高穿透性X射线可以由入射到薄固体靶上的高强度激光脉冲加速的电子产生。我们已经使用了~ 10 ps的脉冲长度来加速电子以产生明亮的X射线源。在8.5-12×1018 W/cm 2的激光强度下测量韧致辐射温度。这些X射线已经被顺序地用于使用图像板和像素化闪烁体系统对高密度材料进行成像。
Point-like sources of X-rays that are pulsed (sub nanosecond), high energy (up to several MeV) and bright are very promising for industrial and security applications where imaging through large and dense objects is required. Highly penetrating X-rays can be produced by electrons that have been accelerated by a high intensity laser pulse incident onto a thin solid target. We have used a pulse length of ~10ps to accelerate electrons to create a bright x-ray source. The bremsstrahlung temperature was measured for a laser intensity from 8.5-12×1018 W/cm2. These x-rays have sequentially been used to image high density materials using image plate and a pixelated scintillator system.