Modeling Astrophysical Collisionless Shocks With Laboratory Experiments Derek Schaeffer Ucla

Modeling Astrophysical Collisionless Shocks With Laboratory Experiments Explaining these phenomena requires understanding how classic nonlinear plasma processes like magnetic reconnection and shocks operate under the extreme conditions expected around black holes and. Major interests include magnetized collisionless shocks, magnetic reconnection, and ion scale "mini" magnetospheres, all of which are commonly observed in heliospheric and astrophysical.

Ppt Proton Imaging Of Collisionless Shock Experiments At Omega Ep Explore how laboratory experiments model collisionless shocks in extreme astrophysical environments around black holes and neutron stars. In this talk, i will discuss results from high energy density experiments and simulations on the formation of supercritical collisionless shocks created through the interaction of a supersonic laser driven magnetic piston and magnetized ambient plasma. He did his postdoctoral work at princeton in high energy density laboratory astrophysics, where he was one of the primary developers of pioneering laboratory experiments that utilize high energy lasers to generate astrophysically relevant collisionless shocks in high energy density plasmas. Early time laser plasma parameters necessary to characterize the different shock coupling regimes are studied through experiments performed at the lapd and phoenix laboratory at ucla.

Ppt Proton Imaging Of Collisionless Shock Experiments At Omega Ep He did his postdoctoral work at princeton in high energy density laboratory astrophysics, where he was one of the primary developers of pioneering laboratory experiments that utilize high energy lasers to generate astrophysically relevant collisionless shocks in high energy density plasmas. Early time laser plasma parameters necessary to characterize the different shock coupling regimes are studied through experiments performed at the lapd and phoenix laboratory at ucla. With the advent of high power lasers, laboratory experiments with high mach number, collisionless plasma flows can provide critical information to help understand the mechanisms of shock formation by plasma instabilities and self generated magnetic fields. Combined with large particle in cell simulations, this allows direct comparisons between lab and astrophysical collisionless shocks. We review experiments on collisionless shocks driven by a laser produced magnetic piston undertaken with the phoenix laser laboratory and the large plasma device at the university of california, los angeles. Influence of the plasma collisions on the laser driven collisionless shock formation and subsequent ion acceleration is studied on the basis of two different collisional algorithms and their implementations in two well known particle in cell codes epoch and smilei.