April 23-25

Log in

Abstract Details

files Add files


Author: Stuart Loch
Requested Type: Poster
Submitted: 2018-03-01 22:41:28

Co-authors: C. Favreau, M.S. Pindzola, C.A. Johnson, D.A. Ennis, C.P. Ballance, M. Turkington, R. Smyth, T. Abrams, E.A. Unterberg

Contact Info:
Auburn University
206 Allison Lab
Auburn, AL   36849

Abstract Text:
We present here a summary of new atomic physics data for W I, Mo I and Ne I. The neutral W and Mo data are for use in studies involving high-Z plasma facing components. The neutral Ne data is to be used for edge diagnostics on W-7X. The new neutral W and Mo data consists of photon emissivity coefficients (PECs) for spectral comparisons, effective ionization rate coefficients (SCD) for use in impurity transport codes, and S/XB ratios for use in impurity influx diagnostics. The neutral neon data consists of effective ionization rate coefficients and photon emissivity coefficients. In all of the above cases, the role of metastable states on the impurity transport coefficients is examined. The effect of metastable populations on the W I S/XB ratio is investigated, with the effective ionization being relatively insensitive and the line intensity being strongly dependent.

A new collisional radiative code ColRadPy, written purely in python, has been developed for use in generalized collisional-radiative studies. Colradpy solves the collisional-radiative (CR) set of equations as well as the time-independent and time-dependent ionization balance equations. This code allows an arbitrary number of metastable states to be used, and we show results for W I using 6 metastable states, with their impact on PEC, SCD and S/XB coefficients.

Work supported by USDOE grants DE-SC0015877 & DE-FC02-04ER54698 and ORNL contract DE-AC05-00OR22725.