An Introduction to Space Instrumentation,
Edited by K. Oyama and C. Z. Cheng, pp. 33-39.
© TERRAPUB, 2013.
J. Kurihara1, N. Iwagami2, and K.-I. Oyama3
1Graduate School of Science, Hokkaido University, Japan
2Department of Earth and Planetary Science, University of Tokyo, Japan
3Plasma and Space Science Center, National Cheng Kung University, Taiwan
The N2 Temperature of Vibration (NTV) instrument was developed to study energetics and structure of the lower thermosphere, applying the Electron Beam Fluorescence (EBF) technique to measurements of vibrational temperature, rotational temperature and number density of atmospheric N2. The sounding rocket experiments using this instrument have been conducted four times, including one failure of the electron gun. Aerodynamic effects on the measurement caused by the supersonic motion of the rocket were analyzed quantitatively using three-dimensional simulation of Direct Simulation Monte Carlo (DSMC) method, and the absolute density profile was obtained through the correction of the spin modulation.
Key words: Temperature, lower thermosphere, electron beam fluorescence, sounding rocket.