arXiv 1402.57292014-02-24physics.acc-phphysics.ins-det

基于laser驱动的奇异核提取加速方法

Towards a novel laser-driven method of exotic nuclei extraction-acceleration for fundamental physics and technology

Mamiko Nishiuchi, Hironao Sakaki, Katsuhisa Nishio, Riccard Orlandi, Hiroyuki Sako, Tatiana. A. Pikuz, Anatory Ya. Faenov, Timur Zh. Esirkepov, Alexander S. Pir… 展开作者

Mamiko Nishiuchi, Hironao Sakaki, Katsuhisa Nishio, Riccard Orlandi, Hiroyuki Sako, Tatiana. A. Pikuz, Anatory Ya. Faenov, Timur Zh. Esirkepov, Alexander S. Pirozhkov, Kenya Matsukawa, Akito Sagisaka, Koichi Ogura, Masato Kanasaki, Hiromitsu Kiriyama, Yuji Fukuda, Hiroyuki Koura, Masaki Kando, Tomoya Yamauchi, Yukinobu Watanabe, Sergei V. Bulanov, Kiminori Kondo, Kenichi Imai, Shoji Nagamiya

备注：: including supplementary information

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摘要：

奇异核性质的测量是基础核物理的基础，也是当代射频加速器技术面临的一个严峻挑战。将高强度短脉冲激光系统与核测量技术相结合是一种很有前途的选择。提出了一种新的激光驱动的奇异核提取加速方法（LENex）：利用飞秒拍瓦激光照射靶，在靶上注入离子束，提取并加速到几个GeV的高电荷核反应产物。这里介绍了LENex的原理验证实验：几百太瓦的激光聚焦在铝箔上，用少量的铁模拟核反应产物，提取几乎完全剥离的铁核，并将它们加速到0.9 GeV。我们的实验和数值模拟表明，短寿命，重奇异核，具有比传统技术大得多的荷质比，可以获得的形式充满活力，低发射度，高电流束。

英文摘要：

The measurement of properties of exotic nuclei, essential for fundamental nuclear physics, now confronts a formidable challenge for contemporary radiofrequency accelerator technology. A promising option can be found in the combination of state-of-the-art high-intensity short pulse laser system and nuclear measurement techniques. We propose a novel Laser-driven Exotic Nuclei extraction-acceleration method (LENex): a femtosecond petawatt laser, irradiating a target bombarded by an external ion beam, extracts from the target and accelerates to few GeV highly-charged nuclear reaction products. Here a proof-of-principle experiment of LENex is presented: a few hundred-terawatt laser focused onto an aluminum foil, with a small amount of iron simulating nuclear reaction products, extracts almost fully stripped iron nuclei and accelerate them up to 0.9 GeV. Our experiments and numerical simulations show that short-lived, heavy exotic nuclei, with a much larger charge-to-mass ratio than in conventional technology, can be obtained in the form of an energetic, low-emittance, high-current beam.

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