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今 亮; 西内 満美子; 桐山 博光; 小倉 浩一; 森 道昭; 榊 泰直; 神門 正城; 近藤 公伯
Journal of Physics; Conference Series, 717, p.012103_1 - 012103_4, 2016/05
被引用回数：2 パーセンタイル：63.45(Physics, Applied)We have experimentally demonstrated that a multi-channel cross-correlator (MCCC) for single-shot measurement of temporal contrast achieved the high dynamic range of 10
and large temporal window of ~1 ns. In the experiment with short pulse laser, the shot to shot fluctuation of a pedestal intensity at sub-ns was measured. The fluctuation is mainly due to the random process of amplified spontaneous emission. The precise information on temporal contrast shot to shot will be crucial in assessing the particle acceleration in relativistic laser-mater interaction studies. We will discuss the experimental detail and result.
Zhang, X.*; 田島 俊樹*; Koga, J. K.; 戎崎 俊一*
no journal, ,
Electrons can be accelerated to high energies in the wakefield, when a short pulse laser or beam passes through a plasma. Transverse betatron oscillations of such electrons in the wakefield radiate X-ray or 
-ray photons. Electrons lose energy due to radiation damping effects. Here we consider the betatron oscillations and radiation energy loss scenario by setting one off-axis energetic electron beam in the wake to understand the radiation characterization. We then apply this to the Gamma Ray Burst (GRB) phenomenon from Blazar jets. We find that the acceleration process in such an object has important similarity to laser wakefield acceleration experiments. Therefore, the above radiation processes from LWFA studies are an important guide to understand Blazars and GRBs.
