compute SLD from chemical formula and energy, for x-rays and neutrons
Possible solutions:
- port periodictable Python package [Redmine1805]
- share code with Mantid
- use ORSO SLD database https://slddb.esss.dk/slddb
[our oldest issue, Redmine12, 19feb15 by Gennady]
Edited by Wuttke, Joachim