Abstract
The generation of thermal radiation by heavy-ion beam heated cylinders, with parameters of relevance to indirectly driven inertial confinement fusion (ICF), is studied by means of 2-D radiation hydrodynamics simulations and by a simple model, heuristically including the 2-D effects. Scaling laws are derived for the conversion efficiency as a function of the beam and converter parameters and are found in agreement with the simulations for both a low-Z material (carbon) and a high-Z material (gold). The choice of the converter material is then discussed. It is confirmed that for a given converter mass density, and for a given (not too large) converter radius, high-Z material achieves good conversion efficiency at the lowest deposited power (anyhow of the order of 10/sup 16/ W-g). On the other hand it is shown that for given beam parameters and converter geometry (with parameters typical of foreseen ICF targets), moderate-Z materials or even low-Z materials are better converters than high materials.
Citation Formats
Atzeni, S.
Scaling laws for thermal radiation generation from heavy-ion beam heated cylinders.
Italy: N. p.,
1992.
Web.
Atzeni, S.
Scaling laws for thermal radiation generation from heavy-ion beam heated cylinders.
Italy.
Atzeni, S.
1992.
"Scaling laws for thermal radiation generation from heavy-ion beam heated cylinders."
Italy.
@misc{etde_10147245,
title = {Scaling laws for thermal radiation generation from heavy-ion beam heated cylinders}
author = {Atzeni, S}
abstractNote = {The generation of thermal radiation by heavy-ion beam heated cylinders, with parameters of relevance to indirectly driven inertial confinement fusion (ICF), is studied by means of 2-D radiation hydrodynamics simulations and by a simple model, heuristically including the 2-D effects. Scaling laws are derived for the conversion efficiency as a function of the beam and converter parameters and are found in agreement with the simulations for both a low-Z material (carbon) and a high-Z material (gold). The choice of the converter material is then discussed. It is confirmed that for a given converter mass density, and for a given (not too large) converter radius, high-Z material achieves good conversion efficiency at the lowest deposited power (anyhow of the order of 10/sup 16/ W-g). On the other hand it is shown that for given beam parameters and converter geometry (with parameters typical of foreseen ICF targets), moderate-Z materials or even low-Z materials are better converters than high materials.}
place = {Italy}
year = {1992}
month = {Apr}
}
title = {Scaling laws for thermal radiation generation from heavy-ion beam heated cylinders}
author = {Atzeni, S}
abstractNote = {The generation of thermal radiation by heavy-ion beam heated cylinders, with parameters of relevance to indirectly driven inertial confinement fusion (ICF), is studied by means of 2-D radiation hydrodynamics simulations and by a simple model, heuristically including the 2-D effects. Scaling laws are derived for the conversion efficiency as a function of the beam and converter parameters and are found in agreement with the simulations for both a low-Z material (carbon) and a high-Z material (gold). The choice of the converter material is then discussed. It is confirmed that for a given converter mass density, and for a given (not too large) converter radius, high-Z material achieves good conversion efficiency at the lowest deposited power (anyhow of the order of 10/sup 16/ W-g). On the other hand it is shown that for given beam parameters and converter geometry (with parameters typical of foreseen ICF targets), moderate-Z materials or even low-Z materials are better converters than high materials.}
place = {Italy}
year = {1992}
month = {Apr}
}