Mass spectrometric studies of laser ablated plume from a superconducting material M. Saleem, A. Hameed, M. J. Iqbal and M. A. Baig Eur. Phys. J. D, 55 1 (2009) 121-126 Published online: 07 August 2009 DOI: 10.1140/epjd/e2009-00227-1