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Investigations of lunar materials
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Hart Jr., H. R. Fleischer, R. L. Comstock, G. M. Fvwaraye, A. O. |
| Copyright Year | 1972 |
| Description | The investigations were directed at determining the radiation history and surface chronology of lunar materials using the etched particle track technique. The major lunar materials studied are the igneous rocks and double core from Apollo 12, the breccia and soil samples from Apollo 14, and the core samples from Luna 16. In the course of this work two new and potentially important observations were made: (1) Cosmic ray-induced spallation-recoil tracks were identified. The density of such tracks, when compared with the density of tracks induced by a known flux of accelerator protons, yields the time of exposure of a sample within the top meter or two of moon's surface. (2) Natural, fine scale plastic deformation was found to have fragmented pre-existing charged particle tracks, allowing the dating of the mechanical event causing the deformation. |
| File Size | 4808642 |
| Page Count | 75 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19720013145 |
| Archival Resource Key | ark:/13960/t3615sr3j |
| Language | English |
| Publisher Date | 1972-01-25 |
| Access Restriction | Open |
| Subject Keyword | Space Sciences Apollo 12 Flight Conferences Lunik 16 Lunar Probe Lunik Lunar Probes Lunar Soil Charged Particles Particle Trajectories Apollo 14 Flight Cosmic Rays Lunar Rocks Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
