@article{Hoarty:2023:10.1063/5.0141850,
author = {Hoarty, DJ and Morton, J and Rougier, JC and Rubery, M and Opachich, YP and Swatton, D and Richardson, S and Heeter, RF and McLean, K and Rose, SJ and Perry, TS and Remington, B},
doi = {10.1063/5.0141850},
journal = {Physics of Plasmas},
pages = {1--15},
title = {Radiation burnthrough measurements to infer opacity at conditions close to the solar radiative zone–convective zone boundary},
url = {http://dx.doi.org/10.1063/5.0141850},
volume = {30},
year = {2023}
}

Download

TY  - JOUR
AB  - Recent measurements at the Sandia National Laboratory of the x-ray transmission of iron plasma have inferred opacities much higher than predicted by theory, which casts doubt on modeling of iron x-ray radiative opacity at conditions close to the solar convective zone-radiative zone boundary. An increased radiative opacity of the solar mixture, in particular iron, is a possible explanation for the disagreement in the position of the solar convection zone-radiative zone boundary as measured by helioseismology and predicted by modeling using the most recent photosphere analysis of the elemental composition. Here, we present data from radiation burnthrough experiments, which do not support a large increase in the opacity of iron at conditions close to the base of the solar convection zone and provide a constraint on the possible values of both the mean opacity and the opacity in the x-ray range of the Sandia experiments. The data agree with opacity values from current state-of-the-art opacity modeling using the CASSANDRA opacity code.
AU  - Hoarty,DJ
AU  - Morton,J
AU  - Rougier,JC
AU  - Rubery,M
AU  - Opachich,YP
AU  - Swatton,D
AU  - Richardson,S
AU  - Heeter,RF
AU  - McLean,K
AU  - Rose,SJ
AU  - Perry,TS
AU  - Remington,B
DO  - 10.1063/5.0141850
EP  - 15
PY  - 2023///
SN  - 1070-664X
SP  - 1
TI  - Radiation burnthrough measurements to infer opacity at conditions close to the solar radiative zone–convective zone boundary
T2  - Physics of Plasmas
UR  - http://dx.doi.org/10.1063/5.0141850
UR  - https://pubs.aip.org/aip/pop/article/30/6/063302/2895473/Radiation-burnthrough-measurements-to-infer
UR  - http://hdl.handle.net/10044/1/104810
VL  - 30
ER  - 

Download