Rigorous peer-reviews are the basis of high-quality academic publishing. Thanks to the great efforts of our reviewers, Plasma was able to maintain its standards for the high quality of its published papers. Thanks to the contribution of our reviewers, in 2021, the median time to first decision was 23 days and the median time to publication was 51 days. The editors would like to extend their gratitude and recognition to the following reviewers for their precious time and dedication, regardless of whether the papers they reviewed were finally published:
| Ahmad Hamdan | Hafiz Muhammad Salman Ajmal |
| Alessandro Fassina | Heung-Sik Tae |
| Alexander Kukushkin | Igor N. Sereda |
| Alexey Vizir | Ilya Valuev |
| Andrea Zille | Iuliana Motrescu |
| Andreas Hoffmann | Jon Tomas Gudmundsson |
| Andreas Kiontke | Jose A. Pérez-Hernández |
| Andree Piwowarczyk | Juan Manuel Díaz-Cabrera |
| Andrey A. Samokhvalov | Kamel Ourabah |
| Antony Ananth | Karla Mossi |
| Arkadiusz Dobrzycki | Lazar Friedland |
| Arnesh K. Bose | Lennart Stenflo |
| Barbara Zaniol | Luigi G. Celona |
| Bogdan Mihalcea | Marco Sumini |
| Brunello Tirozzi | Martin Cada |
| Ciprian Dumitrache | Matthias Schnuerer |
| Couedel Lenaic | Maxime Lesur |
| Daniele Desideri | Min-Chang Lee |
| Daniil L. Marinov | Mohammed Koubiti |
| Davide Rocco | Nishida Robert |
| Diego Marcuzzi | Rodrigo Sávio Pessoa |
| Dušan Kováčik | Sergey Khrapak |
| Efim Oks | Valery Lisitsa |
| Fabio Sattin | Vassiliki Kontargyri |
| Frank R. Graziani | Yusuke Sakai |
| František Krčma | Žiga Gosar |
| Fruit Gabriel | Zoran Simić |
| Gennady Miloshevsky |
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