UEDGE-CRUMPET predicted isotopologue effect on atomic and molecular emission in DIII-D high-recycling divertor plasmas

被引：1

作者：

Holm, Andreas ^{[1
]}

Groth, Mathias ^{[1
]}

McLean, Adam ^{[2
]}

Scotti, Filippo ^{[2
]}

Rognlien, Thomas D. ^{[2
]}

Meyer, William H. ^{[2
]}

Shafer, Morgan W. ^{[3
]}

Wilcox, Robert S. ^{[3
]}

Hollmann, Eric M. ^{[4
]}

机构：

[1] Aalto Univ, Espoo, Finland

[2] Lawrence Livermore Natl Lab, Livermore, CA USA

[3] Oak Ridge Natl Lab, Oak Ridge, TN USA

[4] Univ Calif San Diego, San Diego, CA USA

来源：

NUCLEAR MATERIALS AND ENERGY | 2023年 / 34卷

基金：

芬兰科学院;

关键词：

DIII-D; UEDGE; Isotope effect; Molecules; Lyman-Werner; Fulcher; Lyman-alpha; Balmer-alpha; CRUMPET; Edge-fluid simulations; Collisional-radiative; DETACHMENT; FLUXES;

D O I：

10.1016/j.nme.2022.101337

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

UEDGE-CRUMPET simulations indicate the impact of the molecular hydrogenic isotopologue effect under high -recycling LFS divertor conditions in DIII-D to be negligible for electron density and temperature profiles at the LFS target plate. A 30% decrease in molecular content, accompanied by a 10% increase in atomic content, is predicted for deuterium compared to hydrogen. The predicted isotopologue effect on the radiative power balance, validated with calibrated spectroscopy, is found to be small despite a 20% increase in LFS divertor molecular band emission for deuterium compared to hydrogen. The predictions and measurements show a negligible contribution of molecularly-induced atomic and direct molecular emission to the total radiative power balance under high-recycling conditions, consistent with previous EDGE2D-EIRENE investigations. The UEDGE-CRUMPET simulations were performed using effective hydrogen and deuterium rates considering molecular breakup and excitation processes for H2 and D2, calculated by the CRUMPET collisional-radiative model.

引用

页数：7

共 31 条

[1]

Atomic and Molecular Data Unit Nuclear Data Section NAPC Division, 2022, DAT AT MOL PLAS SURF

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