Portal to Los Alamos Opacity Codes
Also known as Astrophysical opacities · TOPS opacities
Portal to Los Alamos Opacity Codes is your gateway to the set of opacity codes developed at the Los Alamos National Laboratory. The TOPS code has been developed to calculate multigroup opacities that can be written in a variety of formats for use in radiation transport codes. Arbitrary mixture of any elements for which OPLIB data exist is supported. Opacities of special mixtures that are important in astrophysical applications are also available as a separate option (Astrophysical opacities).
Getting access
Open access Open
- How to apply
- Not yet verified — we don’t publish a route we haven’t checked.
Summarised from a registry — the exact application route is not yet verified.
About this database
| Website | https://aphysics2.lanl.gov/astro |
|---|---|
| Subjects | Natural Sciences · Engineering Sciences · Chemistry · Physics · Materials Science and Engineering · Astrophysics and Astronomy · Materials Science |
| Last updated | 2026-09-12 |