Physics – Atomic Physics
Scientific paper
Jan 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990nascp3058..229m&link_type=abstract
In NASA, Goddard Space Flight Center, Annihilation in Gases and Galaxies, NASA CP-3058 p 229-242 (SEE N90-18957 11-70)
Physics
Atomic Physics
Annihilation Reactions, Antiprotons, Kinetic Energy, Matter (Physics), Scattering Cross Sections, Atomic Physics, Cancer, Decay Rates, Energy Dissipation, Imaging Techniques, Spacecraft Propulsion, Technology Utilization
Scientific paper
By virtue of the highly energetic particles released when they annihilate in matter, antiprotons have a variety of potentially important applications. Among others, these include remote 3-D density and composition imaging of the human body and also of thick, dense materials, cancer therapy, and spacecraft propulsion. Except for spacecraft propulsion, the required numbers of low energy antiprotons can be produced, stored, and transported through reliance on current or near term technology. Paramount to these applications and to fundamental research involving antiprotons is knowledge of how antiprotons interact with matter. The basic annihilation process is fairly well understood, but the antiproton annihilation and energy loss rates in matter depend in complex ways on a number of atomic processes. The rates, and the corresponding cross sections, were measured or are accurately predictable only for limited combinations of antiproton kinetic energy and material species.
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