Discovery of Nuclear Tracks in Interplanetary Dust
Nuclear tracks have been identified in interplanetary dust particles (IDP's) collected from the stratosphere. The presence of tracks unambiguously confirms the extraterrestrial nature of IDP's, and the high track densities (10$^{10}$ to 10$^{11}$ per square centimeter) suggest an exposure...
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| Veröffentlicht in: | Science (American Association for the Advancement of Science) 1984-12, Vol.226 (4681), p.1432-1434 |
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| container_issue | 4681 |
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| container_title | Science (American Association for the Advancement of Science) |
| container_volume | 226 |
| creator | Bradley, J. P. Brownlee, D. E. Fraundorf, P. |
| description | Nuclear tracks have been identified in interplanetary dust particles (IDP's) collected from the stratosphere. The presence of tracks unambiguously confirms the extraterrestrial nature of IDP's, and the high track densities (10$^{10}$ to 10$^{11}$ per square centimeter) suggest an exposure age of approximately 10$^{4}$ years within the inner solar system. Tracks also provide an upper temperature limit for the heating of IDP's during atmospheric entry, thereby making it possible to distinguish between pristine and thermally modified micrometeorites. |
| doi_str_mv | 10.1126/science.226.4681.1432 |
| format | Article |
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P.</creatorcontrib><creatorcontrib>Brownlee, D. E.</creatorcontrib><creatorcontrib>Fraundorf, P.</creatorcontrib><creatorcontrib>Walter C. McCrone Associates Inc., Chicago, IL</creatorcontrib><title>Discovery of Nuclear Tracks in Interplanetary Dust</title><title>Science (American Association for the Advancement of Science)</title><addtitle>Science</addtitle><description>Nuclear tracks have been identified in interplanetary dust particles (IDP's) collected from the stratosphere. The presence of tracks unambiguously confirms the extraterrestrial nature of IDP's, and the high track densities (10$^{10}$ to 10$^{11}$ per square centimeter) suggest an exposure age of approximately 10$^{4}$ years within the inner solar system. Tracks also provide an upper temperature limit for the heating of IDP's during atmospheric entry, thereby making it possible to distinguish between pristine and thermally modified micrometeorites.</description><subject>640101 - Astrophysics & Cosmology- Cosmic Radiation</subject><subject>640107 - Astrophysics & Cosmology- Planetary Phenomena</subject><subject>AGE ESTIMATION</subject><subject>Analysis</subject><subject>Astronomical research</subject><subject>Astronomy</subject><subject>Astrophysics</subject><subject>Atmospheric entry</subject><subject>CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS</subject><subject>Composite particles</subject><subject>COSMIC DUST</subject><subject>Density</subject><subject>DUSTS</subject><subject>Earth, ocean, space</subject><subject>Electrons</subject><subject>Exact sciences and technology</subject><subject>HEATING</subject><subject>Interplanetary dust</subject><subject>Interplanetary space</subject><subject>METEORITES</subject><subject>Meteorological research</subject><subject>Micrometeorites</subject><subject>Observations</subject><subject>Olivine</subject><subject>PARTICLE TRACKS</subject><subject>Solar flares</subject><subject>Solar system</subject><subject>Solar systems</subject><issn>0036-8075</issn><issn>1095-9203</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1984</creationdate><recordtype>article</recordtype><sourceid>CYI</sourceid><recordid>eNqN0k1v0zAYB_AIgUQZfAOQIoTgMFL8Ejv2cXRQKlXrgcHVcpwnJSO1O9tB27fHUSo2pB4qHyzZP_vxI_-z7A1Gc4wJ_xRMB9bAnBA-L7nAc1xS8iSbYSRZIQmiT7MZQpQXAlXsefYihBuE0p6ks4xcdsG4P-Dvc9fmV4PpQfv82mvzO-SdzVc2gt_32kLUyVwOIb7MnrW6D_DqMJ9lP75-uV58K9ab5WpxsS40pyIWVFLCUMlZxXUDjTamxpSQlpOaamJqJBpaM4FpW5FGI93wypiGlK1oEDM1oWfZ2-leF2KnUpMRzC_jrAUTFROcEMQTej-hvXe3A4Sodqkh6McXuyEoUmJRIlIleD7Bre5BdbZ1MTW5BQte985C26XlC8p4JeVY--MRnUYDu84c4R_-40lEuItbPYSgVt-vTpWbn6fKz8sTpViuH8vzY9K4voctqPR9i81jzSZtvAvBQ6v2vtulGCiM1Jg8dUieSslTY_LUmLx07t3hT3Qwum-9tqYL_w5LzJmUOLHXE7M6aGWjDwpLwVJSGRPiYfsmROcfSnNJZSrzF1M756U</recordid><startdate>19841221</startdate><enddate>19841221</enddate><creator>Bradley, J. 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E. ; Fraundorf, P.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a638t-39325046576adedaccb1322f62b3a2cb08d3b5813f72da0ad67ccd24f8d05cb23</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1984</creationdate><topic>640101 - Astrophysics & Cosmology- Cosmic Radiation</topic><topic>640107 - Astrophysics & Cosmology- Planetary Phenomena</topic><topic>AGE ESTIMATION</topic><topic>Analysis</topic><topic>Astronomical research</topic><topic>Astronomy</topic><topic>Astrophysics</topic><topic>Atmospheric entry</topic><topic>CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS</topic><topic>Composite particles</topic><topic>COSMIC DUST</topic><topic>Density</topic><topic>DUSTS</topic><topic>Earth, ocean, space</topic><topic>Electrons</topic><topic>Exact sciences and technology</topic><topic>HEATING</topic><topic>Interplanetary dust</topic><topic>Interplanetary space</topic><topic>METEORITES</topic><topic>Meteorological research</topic><topic>Micrometeorites</topic><topic>Observations</topic><topic>Olivine</topic><topic>PARTICLE TRACKS</topic><topic>Solar flares</topic><topic>Solar system</topic><topic>Solar systems</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Bradley, J. 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McCrone Associates Inc., Chicago, IL</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Discovery of Nuclear Tracks in Interplanetary Dust</atitle><jtitle>Science (American Association for the Advancement of Science)</jtitle><addtitle>Science</addtitle><date>1984-12-21</date><risdate>1984</risdate><volume>226</volume><issue>4681</issue><spage>1432</spage><epage>1434</epage><pages>1432-1434</pages><issn>0036-8075</issn><eissn>1095-9203</eissn><coden>SCIEAS</coden><abstract>Nuclear tracks have been identified in interplanetary dust particles (IDP's) collected from the stratosphere. The presence of tracks unambiguously confirms the extraterrestrial nature of IDP's, and the high track densities (10$^{10}$ to 10$^{11}$ per square centimeter) suggest an exposure age of approximately 10$^{4}$ years within the inner solar system. Tracks also provide an upper temperature limit for the heating of IDP's during atmospheric entry, thereby making it possible to distinguish between pristine and thermally modified micrometeorites.</abstract><cop>Legacy CDMS</cop><pub>The American Association for the Advancement of Science</pub><doi>10.1126/science.226.4681.1432</doi><tpages>3</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0036-8075 |
| ispartof | Science (American Association for the Advancement of Science), 1984-12, Vol.226 (4681), p.1432-1434 |
| issn | 0036-8075 1095-9203 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_24184027 |
| source | Science Magazine; JSTOR Archive Collection A-Z Listing; NASA Technical Reports Server |
| subjects | 640101 - Astrophysics & Cosmology- Cosmic Radiation 640107 - Astrophysics & Cosmology- Planetary Phenomena AGE ESTIMATION Analysis Astronomical research Astronomy Astrophysics Atmospheric entry CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS Composite particles COSMIC DUST Density DUSTS Earth, ocean, space Electrons Exact sciences and technology HEATING Interplanetary dust Interplanetary space METEORITES Meteorological research Micrometeorites Observations Olivine PARTICLE TRACKS Solar flares Solar system Solar systems |
| title | Discovery of Nuclear Tracks in Interplanetary Dust |
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