Will Barnes

Results 154 issues of Will Barnes

V10 is now out and there are a host of new features that need to be supported. See [the announcement and associated paper in Solar News](https://solarnews.nso.edu/version-10-of-the-chianti-database-released/). From that posting, the...

database
compatibility

Data often need to be interpolated to a particular grid, usually in temperature space. Initially, I used [`interp1d`](https://docs.scipy.org/doc/scipy/reference/generated/scipy.interpolate.interp1d.html) for everything, but that function is now considered "legacy" and thus should...

discussion

Currently, the ionization potential is accessed via the property named `ip` and the equilibrium population fractions through `ioneq`. These are not particularly intuitive and are just inherited from the old...

effort-low
API
discussion

CHIANTI version 9 introudced the `.auto` and `.rrllvl`such that the processes of autoionization and dielectronic recombination from the lower and upper stages, respectively, could be included the level populations calculation....

effort-high
feature
Ion
Atomic Physics Knowledge

Currently, the dielectronic recombination rate calculations in `fiasco` is density-independent though in reality, dielectronic recombination may be suppressed at very high densities. In the IDL routines, there is a correction...

effort-high
feature
Ion
Atomic Physics Knowledge

#219 added the ability to couple the temperature and density axes when computing the level populations. This should also be an option when computing the radiative loss. While the keyword...

bug
effort-low
Good First Issue

#259 reorganized the docs to add a quick start guide which includes some code snippets. However, these have proved difficult to test because of the need to set up the...

help wanted
testing
docs

Could be improved to provide a slightly more in-depth description of the database and maybe link to the various technical notes.

docs

In v9.0.1 and above of the database, there are two additional files used for computing the free-free continuum: `itoh_integrated_gaunt.txt` and `itoh_integrated_gaunt_nonrel.txt`, as noted in [this mailing list post](https://groups.google.com/g/chianti/c/NWkq6BJkUWM). However, it...

help wanted
continuum

`IonCollection.spectrum` needs a pretty major refactor as the logic has gotten pretty messy. Could also use a gallery example as this is something people are often wanting to do with...

IonCollection
refactor