Linear problem of shock wave disturbance analysis. Part 3: Refraction and reflection in the neutral stability case

The refraction and reflection in the neutral stability case, particularly the spontaneous emission, is investigated. The real agent (source) of spontaneous emission under the linear theory is indicated. The availability of infinite wave amplitudes at the plane waves refraction/reflection is disproved. The generalized generation and reflection coefficients for the appropriate description of refraction and reflection in the neutral stability case is proposed.