New approach to the interaction of cosmic rays with nuclei in spacecraft shielding and the human body

Details New approach to the interaction of cosmic rays with nuclei in spacecraft shielding and the human body New approach to the interaction of cosmic rays with nuclei in spacecraft shielding and the human body

Jan 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993stin...9322544b&link_type=abstract

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Computer Science

Cosmic Rays, Human Body, Manned Space Flight, Particle Production, Spacecraft Shielding, Equations Of Motion, Mean Free Path, Mesons, Nucleons, Vector Mesons

Scientific paper

The interaction of high-energy cosmic rays with nuclei in spacecraft shielding and the human body is important for manned interplanetary missions and is not well understood either experimentally or theoretically. We present a new theoretical approach to this problem based on classical hadrodynamics for extended nucleons, which treats nucleons of finite size interacting with massive meson fields. This theory represents the classical analogue of the quantum hadrodynamics of Serot and Walecka without the assumptions of the mean-field approximation and point nucleons. It provides a natural covariant microscopic approach to collisions between cosmic rays and nuclei that automatically includes space-time non-locality and retardation, nonequilibrium phenomena, interactions among all nucleons, and particle production. Unlike previous models, this approach is manifestly Lorentz covariant and satisfies a priori the basic conditions that are present when cosmic rays collide with nuclei, namely an interaction time that is extremely short and a nucleon mean-free path, force range, and internucleon separation that are all comparable in size. We review the history of classical meson-field theory and derive the classical relativistic equations of motion for nucleons of finite size interacting with massive scalar and vector meson fields.

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