量研学術機関リポジトリ「QST-Repository」は、国立研究開発法人 量子科学技術研究開発機構に所属する職員等が生み出した学術成果（学会誌発表論文、学会発表、研究開発報告書、特許等）を集積しインターネット上で広く公開するサービスです。 Welcome to QST-Repository where we accumulates and discloses the academic research results(Journal Publications, Conference presentation, Research and Development Report, Patent, etc.) of the members of National Institutes for Quantum Science and Technology.
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We pay attention to Laser driven ion accelerator that uses high intensity Laser as a new method can accelerate high energy ions. Then, hydrogen cluster, hydrogen molecules compose by intermolecular force, is studied as a new target material in japan. It is possible for us to get high energy ions efficiency when we use the substance in Laser driven ion acceleration experiment. Such useful materials is known that the energy got from them depend on the size of hydrogen clusters. That is why it is very important to discover the cluster size distribution and control them. We make automated system of hydrogen cluster size measurement device to control and simplify the measurement.
We measure the size of hydrogen cluster by using Mie scattering phenomena. When the beam caused by Mie scattering are got at photomultiplier and the software made by LABVIEW captures the signal in Windows PC, we are able to obtain cluster size distribution. In this study, we write programs by using Visual Basic Script in Motion Manager 6 and automate the measurement device. As the automated system enable us to measure them effectively, we will examine differences in the size of hydrogen clusters produced by varying the conditions such as temperature, pressure, and nozzle shape.
Automatization of cluster size measurement system for laser-driven ion acceleration
