非广泛热等离子体辐射热力学

IF 0.9 4区 物理与天体物理 Q4 PHYSICS, CONDENSED MATTER Condensed Matter Physics Pub Date : 2022-03-26 DOI:10.5488/CMP.25.13502
G. Dragan, V. Kutarov, A. Bekshaev
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引用次数: 0

摘要

以金属氧化物纳米颗粒团块形式呈现的凝聚燃烧产物辐射的热力学特征表明与经典普朗克定律的偏差。我们建议用光子系统与非均相燃烧产物相互作用的非加性熵来解释这些偏差,这使得使用非扩展的Tsallis热力学来描述它们成为可能。假设非均质等离子体辐射熵的非加性可以用远程相互作用和非平衡物理化学过程的影响来解释。基于非扩张性q的现象学参数,得到了光子密度的能量依赖分布表达式,在第一个近似中,非扩张性q不依赖于能量。在这种情况下,通过引入超过实际温度的“有效温度”,可以将“非泛化”普朗克定律简化为“通常”的普朗克分布。数值模拟表明,光子的光谱密度、其最大值的位置和大小取决于参数q的值,可用于实验测定和揭示其物理性质和起源。
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Non-extensive thermodynamics of the radiation in heterogeneous thermal plasmas
Thermodynamic characteristics of the radiation of condensed combustion products presented in the form of agglomerates of metal-oxide nanoparticles demonstrate deviations from the classical Planck’s law. We propose to interpret these deviations in terms of the non-additive entropy of the photon system interacting with the heterogeneous combustion products, which makes it possible to use the non-extensive Tsallis thermodynamics for their description. It is assumed that the non-additive character of the radiation entropy in heterogeneous plasma can be explained by the influence of long-range interactions and non-equilibrium physicochemical processes. An expression is obtained for the energy-dependent distribution of the photon density, based on the phenomenological parameter of non-extensiveness q which, in the first approximation, does not depend on the energy. In this case, the "non-extensive" Planck’s law can be reduced to the "usual" Planck distribution by introducing the "effective temperature" that exceeds the real temperature. Numerical modelling has shown that the spectral density of photons, the position and magnitude of its maximum depend on the value of the parameter q, which can be used for its experimental determination and revelation of its physical nature and origin.
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来源期刊
Condensed Matter Physics
Condensed Matter Physics 物理-物理:凝聚态物理
CiteScore
1.10
自引率
16.70%
发文量
17
审稿时长
1 months
期刊介绍: Condensed Matter Physics contains original and review articles in the field of statistical mechanics and thermodynamics of equilibrium and nonequilibrium processes, relativistic mechanics of interacting particle systems.The main attention is paid to physics of solid, liquid and amorphous systems, phase equilibria and phase transitions, thermal, structural, electric, magnetic and optical properties of condensed matter. Condensed Matter Physics is published quarterly.
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