The concept of phonons in solid-state physics is based on oscillations of atoms about equilibrium positions within a lattice. These equilibrium positions are usually a fixed distance apart within the lattice and the oscillations are generally a small fraction of that spacing. Under these conditions, the atoms never get closer to one another than l - 2a, where l is the lattice spacing and 'a' is the maximum amplitude of the atomic oscillation. A model for LENR within crevices of a lattice provides a different scenario. This presentation represents the concepts of, the requirements for, and the implications of, the new picture. The new concept is that the lattice does not tightly bind the sub-lattice within the linear defect. Under certain conditions, the sub-lattice spacing can become independent of the lattice spacing and sections of the sub-lattice will act like an 'accordion' or a 'Slinky'. The group oscillations, represented by different phonon modes, allow l to change
