The proton pack was first depicted in the film "Ghostbusters", an American supernatural comedy film directed and produced by Ivan Reitman and written by Dan Aykroyd and Harold Ramis and released in what year?
Proton pack: The proton pack is an energy weapon used for weakening ghosts and aiding in capturing them within the "Ghostbusters" universe. Proton pack:  First depicted in the film "Ghostbusters", it has a hand-held wand ("Neutrona Wand" or particle thrower) connected to a backpack-sized particle accelerator. Ghostbusters: Ghostbusters is a 1984 American supernatural comedy film directed and produced by Ivan Reitman and written by Dan Aykroyd and Harold Ramis.
1984