Atomic Structure from the Compact Fiber: Transport, Screening, and Spectroscopic Thresholds in the Reciprocal System. This paper develops the first major physical application of the compact fiber established in the companion foundational paper. Its primary result is the Class II screening classification: all 11 screening slopes and intercepts for ionization energy, electron affinity, fine-structure splitting, and electric polarizability are generated mechanically from the compact fiber’s transport and readout geometry, with zero per-element fitted parameters. Building on this classification, the paper develops a Class I restoration-depth law, a time-region / Kustaanheimo–Stiefel bridge recovering the hydrogen Rydberg spectrum, and a quantum-defect threshold that reproduces the periodic-table group structure. In the mature core, the framework produces about 95 atom-observable comparisons at about 5.7% weighted mean absolute error against NIST data. One global normalization constant remains open.
A. R. Wells (Sun,) studied this question.