Atomic physics modeling of transmission spectra of Sc-doped aerogel foams to support OMEGA experiments

H M Johns; N E Lanier; J L Kline; C J Fontes; T S Perry; C L Fryer; C R D Brown; J W Morton; J D Hager; M E Sherrill

doi:10.1063/1.4962195

Atomic physics modeling of transmission spectra of Sc-doped aerogel foams to support OMEGA experiments

Rev Sci Instrum. 2016 Nov;87(11):11E337. doi: 10.1063/1.4962195.

Authors

H M Johns¹, N E Lanier¹, J L Kline¹, C J Fontes¹, T S Perry¹, C L Fryer¹, C R D Brown², J W Morton², J D Hager¹, M E Sherrill¹

Affiliations

¹ Los Alamos National Laboratory, P.O. Box 1663, Los Alamos, New Mexico 87544, USA.
² AWE Aldermaston, Berkshire, Reading RG7 4PR, United Kingdom.

PMID: 27910339
DOI: 10.1063/1.4962195

Abstract

We present synthetic transmission spectra generated with PrismSPECT utilizing both the ATBASE model and the Los Alamos opacity library (OPLIB) to evaluate whether an alternative choice in atomic data will impact modeling of experimental data from radiation transport experiments using Sc-doped aerogel foams (ScSi₆O₁₂ at 75 mg/cm³ density). We have determined that in the 50-200 eV T_e range there is a significant difference in the 1s-3p spectra, especially below 100 eV, and for T_e = 200 eV above 5000 eV in photon energy. Examining synthetic spectra generated using OPLIB with 300 resolving power reveals spectral sensitivity to T_e changes of ∼3 eV.