OEDGE modeling of DIII-D density scan discharges leading to detachment

The OEDGE code is used to model the outer divertor plasma for discharges from a density scan experiment on DIII-D with the objective of assessing EIRENE and ADAS hydrogenic emission atomic physics data for Dα, Dβ and Dγ for values of Te and ne characteristic of the range of divertor plasma condition...

Full description

Saved in:
Bibliographic Details
Published in:Journal of nuclear materials 2015-08, Vol.463 (C), p.565-568
Main Authors: Elder, J.D., Stangeby, P.C., Bray, B.D., Brooks, N., Leonard, A.W., McLean, A.G., Unterberg, E.A., Watkins, J.G.
Format: Article
Language:English
Subjects:
Dense plasmas
Density
Detachment
Eirene
Emission spectroscopy
Mathematical models
Noise levels
Nuclear engineering
Plasma (physics)
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The OEDGE code is used to model the outer divertor plasma for discharges from a density scan experiment on DIII-D with the objective of assessing EIRENE and ADAS hydrogenic emission atomic physics data for Dα, Dβ and Dγ for values of Te and ne characteristic of the range of divertor plasma conditions from attached to weakly detached. Confidence in these values is essential to spectroscopic interpretation of any experiment or modeling effort. Good agreement between experiment and calculated emissions is found for both EIRENE and ADAS calculated emission profiles, confirming their reliability for plasma conditions down to ∼1eV. For the cold dense plasma conditions characteristic of detachment, it is found that the calculated emissions are especially sensitive to Te.
ISSN:0022-3115
1873-4820
DOI:10.1016/j.jnucmat.2014.09.055