dorsal/arxiv
View SchemaDetailed Radiative Transport Modeling of a Radiative Divertor
| Authors | A. S. Wan, H. E. Dalhed, H. A. Scott, D. E. Post, T. D. Rognlien |
|---|---|
| Categories | |
| ArXiv ID | plasm-ph/9507002 |
| URL | https://arxiv.org/abs/plasm-ph/9507002 |
| DOI | 10.1016/0022-3115(94)00482-X |
Abstract
An effective radiative divertor maximizes the utilization of atomic processes to spread out the energy deposition to the divertor chamber walls and to reduce the peak heat flux. Because the mixture of neutral atoms and ions in the divertor can be optically thick to a portion of radiated power, it is necessary to accurately model the magnitude and distribution of line radiation in this complex region. To assess their importance we calculate the effects of radiation transport using CRETIN, a multi-dimensional, non-local thermodynamic equilibrium simulation code that includes the atomic kinetics and radiative transport processes necessary to model the complex environment of a radiative divertor. We also include neutral transport to model radiation from recycling neutral atoms. This paper presents a case study of a high-recycling radiative divertor with a typical large neutral pressure at the divertor plate to estimate the impact of H line radiation on the overall power balance in the divertor region with consideration for line opacities and atomic kinetics.
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"abstract": "An effective radiative divertor maximizes the utilization of atomic processes\nto spread out the energy deposition to the divertor chamber walls and to reduce\nthe peak heat flux. Because the mixture of neutral atoms and ions in the\ndivertor can be optically thick to a portion of radiated power, it is necessary\nto accurately model the magnitude and distribution of line radiation in this\ncomplex region. To assess their importance we calculate the effects of\nradiation transport using CRETIN, a multi-dimensional, non-local thermodynamic\nequilibrium simulation code that includes the atomic kinetics and radiative\ntransport processes necessary to model the complex environment of a radiative\ndivertor. We also include neutral transport to model radiation from recycling\nneutral atoms. This paper presents a case study of a high-recycling radiative\ndivertor with a typical large neutral pressure at the divertor plate to\nestimate the impact of H line radiation on the overall power balance in the\ndivertor region with consideration for line opacities and atomic kinetics.",
"arxiv_id": "plasm-ph/9507002",
"authors": [
"A. S. Wan",
"H. E. Dalhed",
"H. A. Scott",
"D. E. Post",
"T. D. Rognlien"
],
"categories": [
"plasm-ph",
"physics.plasm-ph"
],
"doi": "10.1016/0022-3115(94)00482-X",
"title": "Detailed Radiative Transport Modeling of a Radiative Divertor",
"url": "https://arxiv.org/abs/plasm-ph/9507002"
},
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