摘要
星际飞行中的辐射主动防护问题一直是人们研究的焦点,低地轨道飞行中采用的质量厚度屏蔽已经不能满足要求,必须寻找新的空间辐射主动防护技术和方法。在电场、磁场、等离子体膨胀等众多新的主动防护方法中,选取了等离子体膨胀辐射防护技术作为研究对象;通过注入高能等离子体使磁场膨胀,从而使空间带电粒子偏转以减少空间辐射对飞行器及航天员的辐射损伤。通过原理性实验,证明了在真空状态下,等离子体的注入可以引起周围磁场发生变化,且同一个点的磁感强度随着射频电源输入功率的增大而增大。其机理还有待进一步的研究。
With the development of Chinese manned spaceflight,the planetary missions will become true in the future.The protection of astronauts from cosmic radiation is an unavoidable problem that should be considered.There are many revolutionary ideas for shielding including Electrostatic Fields,Confined Magnetic Field,Unconfined Magnetic Field and Plasma Shielding etc.The concept using cold plasma to expand a magnetic field was recommended for further assessment.Magnetic field inflation was produced by the injection of plasma onto the magnetic field.The method can be used to deflect charged ions and to reduce space radiation dose.It can supply the suitable radiation protection for astronauts and spacecraft.Principle experiments demonstrated that the magnetic field was inflated by the injection of the plasma in the vacuum chamber and the magnetic field intensity strengthened with the increasing of input RF power in this paper.The mechanism should be studied in following steps.
出处
《辐射防护》
CAS
CSCD
北大核心
2012年第5期311-315,321,共6页
Radiation Protection
基金
国家自然科学基金青年基金资助项目(编号10805042)
航天医学基础与应用国家重点实验室资助项目(编号SMFA09A10)
关键词
空间辐射
载人航天
微型磁等离子体
主动防护
space radiation
manned spaceflight
mini-magnetosphere plasma
active shielding
