A new acceleration and emission mechanism is presented for wisps in the crab nebula.It is suggested that the energy of ultra-relativistic electrons comes mainly from Langmuir wave turbulence acceleration and synchrotron absorption acceleration,then they give rise to synchrotron emission.Langmuir wave turbulence acceleration is the dominant mechanism atε≤ε*,while synchrotron absorption acceleration is more important atε>ε*.The energy diffusion equation is investigated for ultra-relativistic electrons undergoing different acceleration and derive power-law solution.In wisp 1 region,the synchrotron emission spectra are obtained,and they are x-rays,optical but not radio.The results are consistent with observations.
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