中文核心期刊
CNKI期刊全文数据库
中国科学引文数据库(CSCD)源期刊
中国科技论文统计源期刊
万方数据知识服务平台
英国《科学文摘》(SA)
美国化学文摘(CA)
俄罗斯《文摘杂志》(AJ)
德国《天文学与天体物理学文摘》(AAA)
英国《中国天文学和天体物理学》(SCI收录)全文摘译期刊之一
《中国学术期刊文摘》
《中国物理文摘》
《中国天文学文摘》

• 日球层物理和太阳系探测 • Previous Articles     Next Articles

Comparison of Ionospheric Modification by Different Chemicals Release

HUANG Yong1,2, SHI Jiaming2, YUAN Zhongcai2   

  1. 1. Hefei State Key Laboratory of Pulsed Power Laser Technology, Hefei Electronic Engineering Institute, Hefei 230037;
    2. Hefei Key Laboratory of Infrared and Low Temperature Plasma of Anhui Province, Hefei Electronic Engineering Institute, Hefei 230037
  • Received:2010-11-17 Revised:2011-10-09 Online:2012-01-15 Published:2012-01-15

Abstract: Six chemicals, H2, H2O, CO2, SF6, CF3Br and Ni(CO)4, are considered as ionospheric modification materials. Each of these chemicals reacts in the F region to produce localized plasma depletions and form large scale electron holes. In the active ionospheric modification experiments, the criteria for selecting the released chemicals include the cost and effectiveness. The effectiveness of released chemicals depends on the amount which goes into the vapor state. In this paper, the thermodynamics governing the vapor fraction of the released chemicals were investigated. Additionally, the size and magnitude of the electron depletions were calculated with finite element simulation method. The results show that H2O has the lowest vapor yield of about 19% from a heated, pressurized tank, and over 60% of the other five chemicals should be vented in gaseous form. To reduce the cost, the chemicals with small density, such as H2 or CO2 may be chosen. Based on estimating the electron density reduction, the chemicals which have slow diffusion speed and large chemical reaction rates, such as SF6 or Ni(CO)4, may be selected. These chemicals can produce a larger, deeper and more durable electron hole.

CLC Number: