Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

The Periodicity of Nuclear Magnetic Moments and Nucleon Binding Energies in Light Nuclides: Implications for Nuclear Structure

Version 1 : Received: 11 September 2023 / Approved: 13 September 2023 / Online: 13 September 2023 (11:13:57 CEST)

How to cite: Walsh, R. The Periodicity of Nuclear Magnetic Moments and Nucleon Binding Energies in Light Nuclides: Implications for Nuclear Structure. Preprints 2023, 2023090886. https://doi.org/10.20944/preprints202309.0886.v1 Walsh, R. The Periodicity of Nuclear Magnetic Moments and Nucleon Binding Energies in Light Nuclides: Implications for Nuclear Structure. Preprints 2023, 2023090886. https://doi.org/10.20944/preprints202309.0886.v1

Abstract

The atomic nucleus contains protons and neutrons surrounded by a structured electron cloud. Some combinations of protons and neutrons induce the nucleus to behave like a microscopic magnet, possessing a unique magnitude and orientation known as the nuclear magnetic moment (µ). When the numbers of protons and neutrons are both even then µ=0, but otherwise each nu-clide’s nuclear magnetic moment is unique. A second unique nuclear physical property relates to the nucleon binding energy (BE), which can be thought of as the energy between protons and neu-trons bound within the nucleus. The sequence of stable nuclides increases one nucleon at a time through 36Ar. The binding energy associated with the addition of each successive nucleon (∆BE) through this progression is unique. The hypothesis here is that the unique non-zero magnetic mo-ment and ∆ binding energy of each nuclide derive from its respective microscopic nuclear struc-ture, analogous to the way that the atomic physical properties of an element ultimately derive from its unique electron orbital structure. By extension, the identification of nuclear periodic pat-terns might eventually inform a theory of nuclear structure. The light, stable nuclides through 36Ar were arranged in ascending order according to atomic mass, and their nuclear magnetic mo-ments and binding energies were evaluated for periodic patterns. Fixed-period lengths from 4 through 18 nuclides per period were considered. These fixed periods, each of equal length, were stacked one upon the other and analyzed for vertical trends. The best evidence of periodicity in both µ and ∆BE converges precisely at the fixed 12-nuclide period. Implications for nuclear structure are discussed.

Keywords

nuclear periodicity; nuclear structure; shell model; nucleon pairing effect; quark structure; representational nuclear chemistry; nucleon binding energy; nuclear magnetic moment

Subject

Chemistry and Materials Science, Inorganic and Nuclear Chemistry

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