High-intensity beam generation by high repetition rate production of laser plasma

2018 Fiscal Year Final Research Report

• Project/Area Number: 15K04743
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Quantum beam science
• Research Institution: National Institutes for Quantum and Radiological Science and Technology (2016-2018); Japan Atomic Energy Agency (2015)
• Principal Investigator: Hirotsugu Kashiwagi 国立研究開発法人量子科学技術研究開発機構, 高崎量子応用研究所 放射線高度利用施設部, 主幹研究員(定常) (30391303)
• Research Collaborator: Yamada Keisuke
• Project Period (FY): 2015-04-01 – 2019-03-31
• Keywords: レーザーイオン源 / 重イオンビーム

Outline of Final Research Achievements

In this study, we investigated a condition capable of stably generating two plasma pulses by a laser ion source with two lasers as a basic research for producing a continuous beam by generating plasma pulses at a high repetition rate. An optical system for combining lasers emitted from two laser devices on the same optical axis with the same energy and pulse width, and a system for controlling the emission pulse interval were constructed. As a result of double carbon plasma generation experiments, it was confirmed that the generation of two plasma pulses are possible with the pulse interval down to about 100 microseconds without the influence of mutual pulses.

Free Research Field

イオン源工学

Academic Significance and Societal Importance of the Research Achievements

レーザーイオン源は従来パルスビームイオン源として利用されてきたが、本成果を基に高頻度でプラズマパルスが発生可能となれば、材料照射等で多くのイオン照射量が必要となる場合においてもレーザーイオン源を使用することができる。