| PPI反应决定的恒星结构稳定性与引力─温度梯度效应 |
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| 引用本文： | 杜九林,张民仓,鲁百佐.PPI反应决定的恒星结构稳定性与引力─温度梯度效应[J].陕西师范大学学报,1995(1). |
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| 作者姓名： | 杜九林 张民仓 鲁百佐 |
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| 作者单位： | 陕西师范大学物理学系 |
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| 摘 要： | 用非平衡态热力学方法建立了描述恒星内部热核反应的动力学方程，进而研究ＰＰＩ反应决定的恒星结构稳定性，获得了稳定性判据以及引力和温度梯度（简称ｇＴ）效应的表达式．结果表明，ＰＰＩ反应是稳定的，扩散总是起维持稳定的作用，而热扩散起破坏稳定的作用；给出了ｇ－Ｔ效应起主导作用、维持稳定作用以及破坏稳定作用时的条件，同时指出ｇ－Ｔ效应与元素丰度有关．
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| 关 键 词： | 恒星 恒星结构 反应扩散方程 |
Stability of the stellar structure with PPI reaction effected by gravitational force-temperature gradient |
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| Du Jiulin, Zhang Mincang,Lu Baizuo.Stability of the stellar structure with PPI reaction effected by gravitational force-temperature gradient[J].Journal of Shaanxi Normal University: Nat Sci Ed,1995(1). |
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| Authors: | Du Jiulin Zhang Mincang Lu Baizuo |
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| Abstract: | Dynamical equation describing thermonuclear reaction in a star is analysed by using the method of nonequilibrium thermodynamics. Stability of the stellar structure determined by PPI reaction is studied. The stability criterion and its expression of the gravitational force-temperature gradient (g-T) effect are derived. The results show PPI reaction is stablel the diffusion always play a role of keeping stability, while the thermal diffusion of breaking stability. For the g-T effect author have given the conditions of keeping or breaking stability role respectively, and show that the g-T effect is related to the abundances of elements inside the star. |
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| Keywords: | star stellar structure reaction diffusion equation |
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