The CHIANTI upsilon files (ups and scups) by Peter Young (source code)

= The CHIANTI upsilon files (ups and scups) by Peter Young
{c}
{tag=Work by Peter Young}
{title2=2020 version 2.0}

CHIANTI Technical Report No. 13, version 2.0, 25 September 2020. By <Peter Young>.

https://www.chiantidatabase.org/tech_reports/13_scups/chianti_report_13.pdf

Cited passage: PDF p. 2, introductory definition of effective collision strengths as collision strengths integrated over a Maxwellian electron distribution, depending on temperature.