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Context. The origin of the heating of the solar atmosphere is still anunsolved problem. As the photosphere and chromosphere radiate more energy thanthe solar corona, it is challenging but important to reveal all the mechanismsthat contribute to plasma heating there. Ion-neutral collisions could play animportant role. Aims. We aim to investigate the impulsively generated two-fluidmagnetoacoustic waves in the partially ionized solar chromosphere and to studythe associated heating and plasma outflows, which higher up may result innascent solar wind. Methods. To describe the plasma dynamics, we applied atwo-fluid model in which ions+electrons and neutrals are treated as separatefluids. We solved the two-fluid equations numerically using the JOANNA code.Results. We show that magnetoacoustic waves triggered in the photosphere bylocalised velocity pulses can steepen into shocks which heat the chromospherethrough ion-neutral collisions. Pulses of greater amplitude heat plasma moreeffectively and generate larger plasma outflows. Rising the altitude at whichthe pulse is launched results in opposite effects, mainly in local cooling ofthe chromosphere and slower plasma outflows. Conclusions. Even a solitary pulseresults in a train of waves. These waves can transform into shock waves andrelease thermal energy, heating the chromosphere significantly. A pulse candrive vertical flows which higher up can result in the origin of the solarwind.

Chromospheric heating and generation of plasma outflows by impulsively generated two-fluid magnetoacoustic waves