MeV-order proton and carbon ion acceleration by irradiation of 60 fs TW laser pulses on thin copper tape
MeV-order proton and carbon ion acceleration by irradiation of 60 fs TW laser pulses on thin copper tape
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60 fs TW 激光脉冲照射薄铜带实现 MeV 级质子和碳离子加速
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
K. Kondo
中科院分区：
文献类型：
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作者：
T. Fujii;Y. Oishi;T. Nayuki;Y. Takizawa;K. Nemoto;T. Kayoiji;K. Horioka;Y. Okano;Y. Hironaka;K. Nakamura;K. Kondo
我们通过将 60 fs 激光脉冲照射到 5 μm 厚的铜带靶上获得高能离子。质子在6.8×1018W/cm2的激光强度下以1.2MeV的能量加速。质子的等效玻尔兹曼温度为 185 keV，低于激光场中电磁驻波的有质动力势（650 keV）。此外，我们在3.4×1018 W/cm2的激光强度下观察到能量超过0.4 MeV的碳离子的加速。
We obtained high-energy ions by irradiating 60 fs laser pulses onto a copper tape target of 5 μm thickness. The proton was accelerated with energy of 1.2 MeV at laser intensity of 6.8×1018 W/cm2. The equivalent Boltzmann temperature of the proton was 185 keV which was less than the ponderomotive potential (650 keV) of an electromagnetic standing wave in a laser field. Moreover, we observed the acceleration of carbon ions with energy of more than 0.4 MeV at laser intensity of 3.4×1018 W/cm2.