In the case of particles like electrons, neutrons, and atoms, the coherence length is related to the spatial extent of the wave function that describes the particle.
in ThE casE of PArticLes lIke ElectrOns, NEUtroNs, and aToms, thE COhErENcE LenGtH is reLaTeD To the sPaTiaL extent of the Wave Function That desCRIBEs tHe Particle.