The ion‐burst excited by a pulsed mesh grid in a plasma is studied experimentally in connection with the sheath structure. The energy distribution of the ions participating in the burst is found to be a broad one. The attenuation of the peak amplitude of the response is confirmed to be due to collisionless damping. The shape of the ion‐burst is accounted for by the application of the Child‐Langmuir law which gives the approximate potential profile of the sheath around the grid. The potential is also measured by using ion transit time effects in the sheath.