M X-ray production cross-sections in 79Au and 83Bi induced by 50–300 keV protons Anuvab Mandal, Shehla, Madhusree Roy Chowdhury, Ajay Kumar, Sanjiv Puri and Lokesh C. Tribedi Eur. Phys. J. D, 72 7 (2018) 120 Published online: 03 July 2018 DOI: 10.1140/epjd/e2018-80771-1