Details

Autor(en) / Beteiligte

• 田野 王文涛 夏长权 王成 许毅 李文涛 齐荣 张志钧 梁鸿 余昌海 冷雨欣 刘建胜

Titel

Fast Electron Spatial Temperature Distribution Studied by X-Ray 2D Imaging

Ist Teil von

• Chinese physics letters, 2014-05, Vol.31 (5), p.89-92

Erscheinungsjahr

2014

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• We present the experimental and numerical results of two-dimensional x-ray imaging due to fast electron transport in a solid target. A 40-μm-thick copper film target is irradiated by a lOOm J, 50rs normal incident laser pulse. The full width at half maximum of the x-ray photon dose is 25 μm, and the divergence angle of fast electrons is 25°-30°, which is detected by the pin-hole x-ray imaging technique. The target surface plasma layer is compressed by a ponderomotive force into a depth of 0.2λ. The plasma wave accompanied by fast electrons transporting into the target is studied by dividing the plasma into layers in a radial direction. A narrow fast electron channel, which is approximately 8 μm-10 μm in width, mainly contributes to the x-ray dose.