@article{Baggott:2020:10.1103/PhysRevLett.125.145002,
author = {Baggott, R and Rose, S and Mangles, S},
doi = {10.1103/PhysRevLett.125.145002},
journal = {Physical Review Letters},
pages = {145002  1--145002  5},
title = {Calculating opacity in hot, dense matter using second-order electron-photon and two-photon transitions to approximate line broadening},
url = {http://dx.doi.org/10.1103/PhysRevLett.125.145002},
volume = {125},
year = {2020}
}

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TY  - JOUR
AB  - Calculations of the opacity of hot, dense matter require models for plasma line broadening.  How-ever,  the  most  general  theories  are  too  complex  to  calculate  directly  and  some  approximation  is inevitably required.  The most widely-used approaches focus on the line centre, where a Lorentzian shape is obtained.  Here, we demonstrate that in the opposite limit, far from the line centre, the opacity  can  be  expressed  in  terms  of  second-order  transitions,  such  as  electron-photon  and  two-photon processes.  We suggest that this insight could form the basis for a new approach to improve calculations of opacity in hot,  dense matter.  Preliminary calculations suggest that this approach could yield increased opacity away from absorption lines.
AU  - Baggott,R
AU  - Rose,S
AU  - Mangles,S
DO  - 10.1103/PhysRevLett.125.145002
EP  - 1
PY  - 2020///
SN  - 0031-9007
SP  - 145002
TI  - Calculating opacity in hot, dense matter using second-order electron-photon and two-photon transitions to approximate line broadening
T2  - Physical Review Letters
UR  - http://dx.doi.org/10.1103/PhysRevLett.125.145002
UR  - https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.125.145002
UR  - http://hdl.handle.net/10044/1/82715
VL  - 125
ER  - 

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