Biomaterial Database

A closed-form solution to HZE propagation. 1990

J W Wilson, and L W Townsend, and S L Lamkin, and B D Ganapol

NASA Langley Research Center, Hampton, Virginia 23665-5225.

An analytic solution for high-energy heavy ion transport assuming straight-ahead and velocity-conserving interactions with constant nuclear cross-reactions is given in terms of a Green's function. The series solution for the Green's function is rapidly convergent for most practical applications. The Green's function technique can be applied with equal success to laboratory beams as well as to galactic cosmic rays allowing laboratory validation of the resultant space shielding code.

UI	MeSH Term	Description	Entries
D007477	Ions	An atom or group of atoms that have a positive or negative electric charge due to a gain (negative charge) or loss (positive charge) of one or more electrons. Atoms with a positive charge are known as CATIONS; those with a negative charge are ANIONS.
D011835	Radiation Protection	Methods and practices adopted to protect against RADIATION.	Protection, Radiation
D003359	Cosmic Radiation	High-energy radiation or particles from extraterrestrial space that strike the earth, its atmosphere, or spacecraft and may create secondary radiation as a result of collisions with the atmosphere or spacecraft.	HZE Particles,Radiation, Cosmic,Cosmic Radiations,HZE Particle,Particle, HZE,Particles, HZE,Radiations, Cosmic
D005118	Extraterrestrial Environment	The environment outside the earth or its atmosphere. The environment may refer to a closed cabin (such as a space shuttle or space station) or to space itself, the moon, or other planets.	Space (Astronomy),Environment, Extraterrestrial,Environments, Extraterrestrial,Extraterrestrial Environments,Spaces (Astronomy)
D006283	Health Physics	The science concerned with problems of radiation protection relevant to reducing or preventing radiation exposure, and the effects of ionizing radiation on humans and their environment.	Radiologic Physics,Physics, Radiologic,Physics, Health