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Emission Spectrum of Dust in a Cooling Gas
Astrophysics ( IF 0.5 ) Pub Date : 2021-03-08 , DOI: 10.1007/s10511-021-09674-3
S. A. Drozdov

The emission spectrum of dust undergoing substantial temperature fluctuations behind strong shocks (>100 km/s) is modeled. The model includes calculating the temperature distribution function of the dust particles owing to stochastic heating by electrons in the ambient plasma, as well as the features of the resulting spectral distribution of the emission from the dust. As the surrounding plasma cools, the emission spectrum changes and differs noticeably from the “quasi-Planck” spectrum of isothermal dust (or a superposition of spectra of this sort). The character of these changes can be used for diagnostics of the thermal state of the plasma. Objects where these effects can be significant are discussed briefly.



中文翻译:

冷却气体中粉尘的发射光谱

模拟了在强烈震动(> 100 km / s)之后经历较大温度波动的粉尘的发射光谱。该模型包括计算由于环境等离子体中电子的随机加热而产生的粉尘颗粒的温度分布函数,以及由此产生的粉尘发射光谱分布的特征。随着周围等离子体的冷却,发射光谱会发生变化,并且与等温尘埃的“准普朗克”光谱(或此类光谱的叠加)明显不同。这些变化的特征可用于诊断等离子体的热状态。简要讨论这些影响可能显着的对象。

更新日期:2021-03-08
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