Other
Scientific paper
Jun 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992ldef.symp..130a&link_type=abstract
In NASA. Langley Research Center, Second LDEF Post-Retrieval Symposium Abstracts p 130 (SEE N92-27218 18-99)
Other
Earth Orbital Environments, Extraterrestrial Radiation, Long Duration Exposure Facility, Radiation Dosage, Radiation Effects, Radiation Measurement, Aerospace Environments, Beryllium Isotopes, Cosmic Rays, Energy Spectra, Fast Neutrons, Heavy Ions
Scientific paper
The first Long Duration Exposure Facility (LDEF) mission has demonstrated the value of the LDEF concept for deep surveys of the space radiation environment. This paper will survey the types of measurements that could be done on a second LDEF mission. One of the most surprising discoveries on LDEF1 was the Be-7 that was found imbedded on the windward surface. LDEF2 could follow up on this discovery and search for evidence of other cosmogenic nuclei. Another experiment could be designed to investigate the presence of energetic heavy ions observed on LDEF1. The relative abundance of rare earths can also be used to search for evidence that cosmic rays accelerate in episodes which occur throughout their propagation in the stellar medium. Further investigations of radiation effects could also be undertaken. A second LDEF mission also offers the opportunity for new investigations such as measurements of cosmic ray differential energy spectrum to ultrahigh energies. These and other ideas will be discussed.
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