Characterization of proton and heavier ion acceleration in ultrahigh-intensity laser interactions with heated target foils
Characterization of proton and heavier ion acceleration in ultrahigh-intensity laser interactions with heated target foils
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DOI：
10.1103/physreve.70.036405
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发表时间：
2004-09-01
影响因子：
2.4
通讯作者：
Norreys, PA
中科院分区：
文献类型：
--
作者：
McKenna, P;Ledingham, KWD;Norreys, PA
用瓦肯激光器的新的PB臂研究了超高强度(类似于2×10(20)W cm(-2))激光等离子体相互作用中质子和重离子的加速。利用核活化技术首次对加热的和未加热的铁箔靶进行了相同激光激发的质子和重离子加速的空间积分测量。观察到能量大于10 MeV/核子的铁离子。讨论了靶加热对加速离子能谱和激光-离子能量转换效率的影响。通过重离子诱导反应，激光驱动产生了长寿命的同位素Co-57(271天)。
Proton and heavy ion acceleration in ultrahigh intensity (similar to2x10(20) W cm(-2)) laser plasma interactions has been investigated using the new petawatt arm of the VULCAN laser. Nuclear activation techniques have been applied to make the first spatially integrated measurements of both proton and heavy ion acceleration from the same laser shots with heated and unheated Fe foil targets. Fe ions with energies greater than 10 MeV per nucleon have been observed. Effects of target heating on the accelerated ion energy spectra and the laser-to-ion energy conversion efficiencies are discussed. The laser-driven production of the long-lived isotope Co-57 (271 days) via a heavy ion induced reaction is demonstrated.