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LAPLAS : Laboratory Planetary Science at Future FAIR Facility

Study of the structures of giant planets, Jupiter, Saturn, Uranus and Neptune is a very interesting subject as this knowledge could lead to clues about formation of the solar system and can also shed light on the early stages of evolution of life on earth. The first two planets are believed to be made mainly of hydrogen that exists under extreme conditions, while the latter two are expected to contain large quantities of water (ice) in very exotic states. Development of high power lasers have made possible laboratory astrophysics. Recent advancements and planned future developments [1] in the technology of intense bunched beams of heavy ions have lead to the idea of laboratory planetary sciences using these beams. The proposed beam-target geometry is shown in Fig. 1. The target consists of a solid cylinder of hydrogen that is enclosed in a thick shell of a heavy material like lead or gold. One face of the target is irradiated by the beam so that the beam axis coincides with the target axis. The range of the particles is much larger than the target length so the energy deposition is uniform along the particle trajectory. Although the hydrogen will be heated by the beam, the pressure generated in the surrounding high density shell will be substantially higher than that of hydrogen, that will implode the target.