The following is a paper by H. Aspden published in Physics Letters A, v. 119, pp. 105-108 (1986).
Abstract: It is shown that a phenomenological interpretation of the photon of long standing can explain the recent discovery that a single neutron can exhibit diffraction.
Commentary: The 'photon spin' unit, which is a 3x3x3 array of aether lattice particles, spinning so as to disturb surrounding aether lattice structure, which is the key feature from which the author has determined, theoretically, the value of the fine structure constant, is here applied to the problem of electron and neutron diffraction. It is shown that the electron travels with an entourage of four such photon spin units, which collectively set up a standing wave system, with the balanced angular momenta of the spins containing energy so that it is not shed by radiation.
This paper extends on the theme presented at a NATO Advanced Research Workshop, the subject of paper [1987m] in the Abstracts section of these Web pages. Single neutron wave diffraction and the derivation of the de Broglie formula for that action follow from the fact that electrons and positrons are involved in the structure and motion of the neutron.