In particle physics, subatomic particles are described using tracks formed in liquid hydrogen, within a bubble chamber. An accelerated electron beam is incident to an external metallic target that collision produces the alleged subatomic particles, that have a mass, which propagate through the steel enclosure, of the bubble chamber that contains a high pressure liquid hydrogen, to form tracks in the liquid hydrogen but subatomic particles, that have a mass, cannot propagate through the steel enclosure of the bubble chamber without forming a hole, in the steel enclosure, and causing an explosion of the liquid hydrogen.