XVIII International Feofilov Symposium on Spectroscopy of Crystals doped with Rare Earth and Transition Metal ions (IFS-2022, August 22-27, 2022, Moscow, Russia) it was organized by the Physical Institute named after Lebedev of the Russian Academy of Sciences together with the Institute of Spectroscopy of the Russian Academy of Sciences and the Moscow Pedagogical State University. university with the organizational support of the Russian Academy of Sciences.

IFS-2022 continues the series of symposia initiated by Pyotr Petrovich Feofilov in Moscow in 1965. The first nine events were held in the format of All-Russian conferences. For more than 20 years, symposiums have been gathering researchers working in the field of optical spectroscopy, condensed matter physics and solid state chemistry from all over the world. After X (St. Petersburg, 1995), XI (Kazan, 2001), XII (Yekaterinburg, 2004), XIII (Lake Baikal, 2007), XIV (St. Petersburg, 2010), XV (Kazan, 2013), XVI (St. Petersburg, 2015), XVII (Yekaterinburg, 2018). The XVIII International Theophilus Symposium will be held in Moscow at the Physics Institute named after Lebedev of the Russian Academy of Sciences (FIAN).

IFS-2022 statistics:
90 participants (20 young) from 33 institutions from 7 countries
4 plenary sessions, 16 invitees, 31 oral presentations, 32 posters
~280 co-authors from 69 institutions from 17 countries