Research on the influence of precursor electrons ahead of a shock wave on the thermochemical nonequilibrium process behind the shock wave.

2014 Fiscal Year Final Research Report

• Project/Area Number: 25820411
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Aerospace engineering
• Research Institution: Tottori University
• Principal Investigator: YAMADA GOUJI 鳥取大学, 工学(系)研究科(研究院), 助教 (90588831)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: 衝撃波 / アルゴン / 光電離反応 / 電離過程 / プリカーサ現象 / シュタルク効果 / 電子密度 / 電子温度

Outline of Final Research Achievements

The presence of precursor electrons ahead of a shock wave was confirmed by the triple-probe measurement. The generation mechanism of precursor electrons is found to be the photoionization reaction from the comparison with a theoretical analysis. In addition, spectroscopic measurements were conducted to measure the radiation behind a shock wave and the electron density distribution was obtained by evaluating the stark broadening of hydrogen Barmer line. As a result, it is found that the radiative energy loss occurs in the region behind the shock wave.

Free Research Field

非平衡気体力学、分光学