Posibity research of core areal density measurement in ICF by using neutron back light method

2016 Fiscal Year Final Research Report

• Project/Area Number: 24561028
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Nuclear fusion studies
• Research Institution: National Institute for Fusion Science
• Principal Investigator: Ozaki Tetsuo 核融合科学研究所, ヘリカル研究部, 准教授 (50183033)
• Research Collaborator: SAKATA Shohei 大阪大学, レーザーエネルギー学研究センター, 研究員
• Project Period (FY): 2012-04-01 – 2017-03-31
• Keywords: コア面密度 / γｎ中性子 / 高速電子 / 中性子弁別 / 電子分析器 / 中性s遮蔽 / シミュレーション / 高強度レーザー

Outline of Final Research Achievements

We aimed to explore the possibility of neutron backlight measurement with final density target of inertial fusion implosion core surface density measurement. A neutron source is a γn neutron generated when a target is irradiated with a high intensity laser. At the time of the start of the study, the mechanism of occurrence was unknown, and in this research, emphasis was focused on elucidation of the mechanism of its occurrence and measurement of neutron measurement instruments, high-speed electrons that drive generation, and elucidation of behaviors. Through research, we have found that neutrons are γn neutrons, that neutron generation greatly changes due to high-speed electron and target interaction, elucidation of behavior through computer simulation, development of measuring instruments capable of discriminating γ-rays and neutrons, And experimentally clarified the thickness necessary for the core surface density.

Free Research Field

プラズマ計測