Magnetic evaluation of hydrogen pressures changes on MHD fluctuations in IR-T1 tokamak plasma Ramin Alipour and Mohamad R. Ghanbari Eur. Phys. J. D, 72 4 (2018) 75 Published online: 30 April 2018 DOI: 10.1140/epjd/e2018-90033-y