Evidence for a secondary bow in Newton's zero-order nuclear rainbow

Abstract

Rainbows are generally considered to be caused by static refraction and reflection. A primary and a secondary rainbow appear due to refraction and internal reflection in a raindrop as explained by Newton. The quantum nuclear rainbow, which is generated by refraction in the nucleus droplet, only has a "primary" rainbow. Here we show for the first time evidence for the existence of a secondary nuclear rainbow generated dynamically by coupling to an excited state without internal reflection. This has been demonstrated for experimental ${}^{16}$O+${}^{12}$C scattering using the coupled channel method with an extended double folding potential derived from microscopic realistic wave functions for ${}^{12}$C and ${}^{16}$O.

5 pages, 4 figures

References in corpus (1)

• Nuclear rainbow scattering and nucleus-nucleus potential

Cited by in corpus (12)

• Nuclear mean field and double-folding model of the nucleus-nucleus optical potential
• 20Ne + 76Ge elastic and inelastic scattering at 306 MeV
• Elastic and inelastic scattering of ${}^{16}$O on ${}^{27}$Al and ${}^{28}$Si at 240 MeV
• Refractive effects and Airy structure in inelastic ${}^{16}$O+${}^{12}$C rainbow scattering
• Emergence of a secondary rainbow and the dynamical polarization potential for 16O on 12C at 330 MeV
• Similarity between nuclear rainbow and meteorological rainbow -- evidence for nuclear ripples
• Evidence for a dynamically refracted primary bow in weakly bound ${}^9$Be rainbow scattering from ${}^{16}$O
• Existence of inelastic supernumerary nuclear rainbow in ${}^{16}$O+${}^{12}$C scattering
• Secondary bow with ripples in ${}^{12}$C+${}^{12}$C rainbow scattering
• Farside-dominant quasinuclear rainbow in refractive $\alpha$+$\alpha$ scattering
• Existence of a fourth Airy elephant in the nuclear rainbows for ${}^{12}$C+${}^{12}$C scattering
• Systematics of supernumerary nuclear rainbow in inelastic ${}^{16}$O+${}^{12}$C scattering