Study on the clarification of a Coulomb ordered state of ultralow-temperature ion beams and the formation of crystalline beams

2016 Fiscal Year Final Research Report

• Project/Area Number: 26400299
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: National Institutes for Quantum and Radiological Science and Technology (2016); Japan Atomic Energy Agency (2014-2015)
• Principal Investigator: Yuri Yosuke 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 (90414565)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: ビーム冷却 / イオンビーム / レーザー冷却 / 秩序化 / クリスタルビーム / ラジオクロミックフィルム

Outline of Final Research Achievements

Characteristics of an ordered beam, which can be formed by applying strong laser cooling to ion beams circulating in a storage ring, were investigated using molecular dynamics simulations. Various dynamic behaviors were found such as the phase-space distribution and systematic oscillation of constituent ions in the ordered configuration, and their dependences on ring and beam conditions.
Moreover, the possibility of a simple profile measurement method using radiochromic films was considered toward measuring the cross-sectional structure of the ordered beam. It was found, through a microbeam irradiation experiment, that the radiochromic film has sufficiently a high spatial resolution of a few microns. The present result indicates that it is, in principle, possible to measure the cross-sectional structure of an ordered beam, which typically has a diameter of several hundred microns with inter-particle spacing of several ten microns.

Free Research Field

ビーム物理