| 光谱学与光谱分析 |
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| Simulation of UV Spectra from the Wake of a Stony Meteor in the Upper Atmosphere |
| ZHANG Da-wei1，2, CHEN Bo1 |
1. State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Changchun 130033, China
2. Graduate School of the Chinese Academy of Sciences, Beijing 100039, China |
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Abstract For stony meteors thrusting through a region with an altitude between 100-90 km in the upper atmosphere at different initial geocentric velocities, the effective temperatures are calculated based on Sparrow’s particle-collision theory. Assuming different mixture ratios, particle number densities of certain dominant components that might exist in the wake of a stony meteor at a velocity of 72 km·s-1 are given. Using a large-scale spectral synthesis code called Cloudy, UV radiation within the 240-400 nm band of the wake of such a meteor is simulated, and relative intensities of several expected strong emission lines are predicted. Comparison shows that our prediction of the spectrum of a meteor wake, which has an effective temperature of 5 680 K and a fractional vapor pressure of 0.1 Pa, is fairly close to the observational results.
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Received: 2004-07-01
Accepted: 2004-10-06
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Corresponding Authors:
ZHANG Da-wei
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| Cite this article: |
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ZHANG Da-wei,CHEN Bo. Simulation of UV Spectra from the Wake of a Stony Meteor in the Upper Atmosphere [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2005, 25(11): 1899-1902.
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| URL: |
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https://www.gpxygpfx.com/EN/Y2005/V25/I11/1899 |
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