Dr Tzanka (Tzany) Kokalova Wheldon School of Physics and AstronomyReader in Nuclear Physics Director of Positron Imaging Centre Contact details Telephone+44 (0) 121 414 4687Emailkokalova@bham.ac.uk AddressUniversity of Birmingham Edgbaston Birmingham B15 2TT UK Dr Tzanka (Tzanky) Wheldon is a Reader in Nuclear Physics and Director of the University of Birmingham’s Positron Imaging Centre. She was named in the 2020 Timewise Power 50 awards which is a roll call of 50 of the UK's noted powerful executives who also work part-time or flexibly. Other activities 2020 Timewise Power Award Winner