to magnetic field in a collisionless plasma is investigated by means of a fully kinetic

Vlasov simulation with two spatial and two velocity dimensions. The primary RTI in the MHD

regime develops symmetrically in a coordinate axis parallel to gravity as seen in the previous

MHD simulations. The primary RTI in the Hall-MHD regime develops asymmetrically in a

coordinate axis parallel to gravity. A compressible flow is formed at the secondary density shear

layer by the Hall effect, which generates a strong scalar pressure gradient of ions. A Hall electric

field due to the diamagnetic current results in the asymmetric flow at the tip of the finger structure.

In the primary RTI with the ion gyro kinetic effect, secondary RTI with a wavelength

shorter than the wavelength of the primary RTI is generated at the saturation stage of the primary

RTI. A seed perturbation for the secondary RTI is excited by another secondary instability

due to the coupling between the electron stress tensor and the Hall electric field. The heat

flux term plays an important role in the time development of the total pressure. On the other

hand, the contribution of the ion stress tensor is small in both the electric current and the total

pressure.}, pages = {072307--072307}, title = {Non-MHD effects in the nonlinear development of the MHD-scale Rayleigh-Taylor instability}, volume = {24}, year = {2017} }