Synergistic Effects of Plasma and Neutron Irradiations in High-Z Plasma Facing Materials

等离子体和中子辐照在高 Z 等离子体饰面材料中的协同效应

基本信息

  • 批准号:
    15360492
  • 负责人:
  • 金额:
    $ 9.34万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
  • 财政年份:
    2003
  • 资助国家:
    日本
  • 起止时间:
    2003 至 2005
  • 项目状态:
    已结题

项目摘要

A part of helium generated by D-T reaction arrives at the first wall and diverter and cause not only irradiation effect at the surface. Some of them spread in the matrix will cause synergistic irradiation effects together with defects formed by neutron irradiation. The purpose of the present work is to clarify a damage phenomenon under helium irradiation and the synergistic irradiation effects.Understanding meeting and parting processes and a diffusion process of injected helium in W and Fe-Cr alloy at high temperatures was deepened from a helium irradiation experiment. Low energy helium irradiation experiments performed at high temperatures more than 1,000℃ revealed that binding energy of helium and a vacancy, and movement and coalescence of a helium bubbles played an important role for damage accumulation. Density and size of a helium bubble are decided by these elements. The formation of helium bubbles plays an essential role for surface mechanical strength and deformation behavior.Accumulation processes of defects by simultaneous irradiations of helium and neutrons was calculated by the reaction rate theory. It was revealed that reaction of helium with point defects formed by the neutron irradiation determine the accumulation of radiation induce defects.
D-T反应产生的一部分氦到达第一壁和分流器,不仅在表面产生辐照效应。其中一些在基体中扩散,与中子辐照形成的缺陷一起产生协同辐照效应。本工作的目的是阐明氦辐照和协同辐照效应下的一种损伤现象。通过氦辐照实验加深了对高温下注入氦在W和Fe-Cr合金中的相会、分离过程和扩散过程的认识。在1000℃以上的高温条件下进行的低能氦辐照实验表明,氦的结合能和空位、氦气泡的运动和聚并对损伤积累起重要作用。氦气泡的密度和大小是由这些元素决定的。氦气泡的形成对表面的机械强度和变形行为起着至关重要的作用。用反应速率理论计算了氦和中子同时辐照缺陷的累积过程。结果表明,氦与中子辐照形成的点缺陷的反应决定了辐射诱导缺陷的积累。

项目成果

期刊论文数量(9)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Effect of low energy helium irradiation on mechanical properties of 304 stainless steel
  • DOI:
    10.1016/j.fusengdes.2005.09.072
  • 发表时间:
    2006-02
  • 期刊:
  • 影响因子:
    1.7
  • 作者:
    Takayuki Kawakami;K. Tokunaga;N. Yoshida
  • 通讯作者:
    Takayuki Kawakami;K. Tokunaga;N. Yoshida
Dynamic Simulation of Multiplier Effects of Helium Plasma and Neutron Irradiation on Microstructural Evolution in Tungsten
氦等离子体和中子辐照对钨微观结构演化倍增效应的动态模拟
Surface Modification of Low Energy Helium Ion Implanted Austenitic Stainless Steel by Tensile Stress
低能氦离子注入奥氏体不锈钢拉伸应力表面改性
Materials for the plasma-facing components of fusion reactors
  • DOI:
    10.1016/j.jnucmat.2004.04.005
  • 发表时间:
    2004-08-01
  • 期刊:
  • 影响因子:
    3.1
  • 作者:
    Bolt, H;Barabash, V;Yoshida, N
  • 通讯作者:
    Yoshida, N
Impact of low energy helium irradiation on plasma facing materials
低能氦辐照对等离子体材料的影响
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YOSHIDA Naoaki其他文献

Estimation of Dynamic Retention with Fast Ejecting System of Targeted Sample (FESTA) in QUEST
QUEST 中目标样品快速喷射系统 (FESTA) 的动态保留估计
  • DOI:
  • 发表时间:
    2021
  • 期刊:
  • 影响因子:
    0
  • 作者:
    YUE Qilin;HANADA Kazuaki;OYA Makoto;KOJIMA Shinichiro;IDEI Hiroshi;ONCHI Takumi;KURODA Kengoh;YOSHIDA Naoaki;IKEZOE Ryuya;FUKUYAMA Masaharu;HASEGAWA Makoto;SHIMABUKURO Shun;KAWASAKI Shoji
  • 通讯作者:
    KAWASAKI Shoji
Tungsten Large-Scale Fiberform Nanostructures Retained under High Temperature Conditions
高温条件下保留的钨大尺度纤维状纳米结构
  • DOI:
    10.1585/pfr.16.1206001
  • 发表时间:
    2021
  • 期刊:
  • 影响因子:
    0.8
  • 作者:
    OKUYAMA Tatsuki;KAJITA Shin;YOSHIDA Naoaki;TANAKA Hirohiko;KUWABARA Tatsuya;OHNO Noriyasu
  • 通讯作者:
    OHNO Noriyasu
Microstructure and Retention in He-W Co-Deposition Layer
He-W 共沉积层的微观结构和保留
  • DOI:
    10.1585/pfr.15.1201004
  • 发表时间:
    2020
  • 期刊:
  • 影响因子:
    0.8
  • 作者:
    ASAI Kosuke;YOSHIDA Naoaki;OHNO Noriyasu;KAJITA Shin;TANAKA Hirohiko;YAJIMA Miyuki;NAGATA Daisuke
  • 通讯作者:
    NAGATA Daisuke
Dust Formation from Arc Spots on Nanostructured Tungsten Surface
纳米结构钨表面上的电弧斑点形成灰尘
  • DOI:
    10.1585/pfr.15.1205061
  • 发表时间:
    2020
  • 期刊:
  • 影响因子:
    0.8
  • 作者:
    YAJIMA Miyuki;KAJITA Shin;OHNO Noriyasu;MASUZAKI Suguru;YOSHIDA Naoaki;AUSSEMS Damien U. B.;MORGAN Thomas W.;BYSTROV Kirill;MEIDEN Hennie van der
  • 通讯作者:
    MEIDEN Hennie van der
Nanostructure Growth on Rhodium/Ruthenium by the Exposure to He Plasma
通过暴露于 He 等离子体在铑/钌上生长纳米结构
  • DOI:
    10.1585/pfr.13.3406065
  • 发表时间:
    2018
  • 期刊:
  • 影响因子:
    0.8
  • 作者:
    NOJIMA Tomohiro;KAJITA Shin;YOSHIDA Naoaki;KAWAGUCHI Shota;OHNO Noriyasu;TANAKA Hirohiko;TOKITANI Masayuki;NAGATA Daisuke;AKIYAMA Tsuyoshi;YAGI Takashi
  • 通讯作者:
    YAGI Takashi

YOSHIDA Naoaki的其他文献

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{{ truncateString('YOSHIDA Naoaki', 18)}}的其他基金

Study on Damage of Plasma Facing Materials by He Irradiation and its Diagnostic
等离子体表面材料He辐照损伤研究及诊断
  • 批准号:
    16082206
  • 财政年份:
    2004
  • 资助金额:
    $ 9.34万
  • 项目类别:
    Grant-in-Aid for Scientific Research on Priority Areas
DAMAGE OF FUSION MATERIALS UNDER VARIABLE IRRADIATION CONDITIONS
可变辐照条件下聚变材料的损坏
  • 批准号:
    09480110
  • 财政年份:
    1997
  • 资助金额:
    $ 9.34万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)

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用于高温聚变应用的界面强化铁素体高温合金的中子辐照损伤建模
  • 批准号:
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具有高抗中子辐照损伤能力的硼钢和铬镍铁合金
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