Local gravitoelectromagnetic effects on a superconductor

Maxwell's and London's generalized equations, generalized Meissner effect a nd gravitational shielding in an electromagnetic field are obtained. In suc h a context, we show that a neutral particle beam in an infinitely thin sup erconducting cylinder placed in the Earth's gravitoelectric field is focuse d, and that the penetration depth increases with the pulsation of the elect romagnetic field. (C) 2000 Elsevier Science B.V. All rights reserved.