A collisional radiative model for mercury in high-current discharges
A collisional radiative model for mercury in high-current discharges
复制标题
高电流放电中汞的碰撞辐射模型
DOI：
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发表时间：
2000
期刊：
影响因子：
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通讯作者：
J. V. D. Mullen
中科院分区：
文献类型：
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作者：
J. V. Dijk;A. Hartgers;J. Jonkers;J. V. D. Mullen
提出了电子温度在0.75-2 eV，电子密度在1018-1020m-3范围内汞放电的碰撞辐射模型。在许多现代光源中都会遇到这样的等离子体参数，例如汞操作的感应灯和紧凑型荧光灯。使用了分析TOP模型，该模型允许隐含地考虑大多数非平衡能级。因此，尽管考虑了相对较低的能级数(19)，但仍然考虑了涉及高激发原子汞状态的间接电离过程。较高的原子汞水平对电离速率系数的影响已被仔细分析，并被发现对电离速率系数有显著贡献。此外，通过引入特定的有效发射率，将提出量化等离子体产生的辐射的一致方法。这使得人们能够用以输运为主的态的密度以及电子密度和温度来表示总的辐射功率。这些系数，以及电离和复合的净系数，将被提出和讨论，使它们能够用于等离子体输运模型。
A collisional radiative model is presented for mercury discharges with electron temperatures between 0.75-2 eV and electron densities between 1018-1020 m-3. Such plasma parameters are encountered in a number of modern light sources, such as mercury-operated induction lamps and the compact fluorescent lamp. The analytical top model has been used, which allows the majority of the non-equilibrium levels to be taken into account implicitly. As a result, indirect ionization processes involving highly excited atomic mercury states are taken into account in spite of the relatively low number of levels (19) which has been considered. The influence of higher atomic mercury levels on the ionization rate coefficient has been carefully analysed, and has been found to contribute significantly. Furthermore, a consistent means of quantifying the production of radiation by the plasma will be presented by introducing the specific effective emissivities. These enable one to express the total radiated power in terms of the densities of the transport-dominated states and the electron density and temperature. These coefficients, as well as the net coefficients of ionization and recombination, will be presented and discussed, enabling their usage in plasma transport models.