Directional Scattering Mechanism of FQ Graviton Fluid in the Interaction Between Permanent Magnets and Ferromagnetic Media

Classical electromagnetism describes the attractive and repulsive interactions between permanent magnets and iron-nickel ferromagnetic media through electron spin, magnetic moment, magnetic flux, and magnetic resistance. Although engineering formulas can fit experimental observations well, they fail to reveal the fundamental physical ontology behind magnetic fields. Based on the FQ graviton fluid topological channel theory[1], this paper introduces the concept of directional scattering cross-section corresponding to the directional arrangement of magnetic domains. The internal magnetic domains of permanent magnets maintain a stable and unified orientation, while the magnetic domains of ferromagnetic media such as iron and nickel can undergo cooperative orientation rearrangement under coupling effects. Magnetic interaction originates from the flux gradient of graviton fluid formed in the gap region between media. In heteropolar coupling, the alignment of magnetic domains on both sides intercepts graviton fluid bidirectionally in the gap, forming a low-pressure region lower than the background reference; the momentum thrust exerted by the external background fluid produces macroscopic attraction. In homopolar coupling, the oppositely oriented magnetic domains on both sides cause superposition of graviton fluid momentum in the gap, generating a high-pressure region and macroscopic repulsion. This paper establishes a phenomenological mathematical model of graviton fluid pressure difference and derives the quantitative relationship between gap distance and magnetic force. The coupling effect only exists in the air gap domain as a local topological effect and does not change the intrinsic static scattering cross-section of matter; thus, the total mass of the composite system remains unchanged after media fitting. Combined with publicly observed results including permanent magnet suction-gap curves and magnetic domain imaging[5-8], this paper clarifies the gap interception ratio and lateral flux leakage coefficient as parameters for subsequent experimental calibration, laying a foundation for the modeling of a complete electromagnetic force system.