Studies of modern and ancient solar energetic particles

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Modern solar energetic particles (SEPs) have been studied for about 50 years by satellites and ground-based observations. These measurements indicate much about the nature of SEPs but cover too short a period to quantify the probabilities of very large solar particle events. Many SEPs have high enough energies to make nuclides in material in which they interact. Some nuclides measured in lunar samples have been used to extend the record about SEPs back several million years. Some new measurements of modern SEPs during the last solar cycle and new results for nuclides made by SEPs in lunar samples are presented ... continued below

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14 p.

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Reedy, R.C. October 1, 1998.

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Description

Modern solar energetic particles (SEPs) have been studied for about 50 years by satellites and ground-based observations. These measurements indicate much about the nature of SEPs but cover too short a period to quantify the probabilities of very large solar particle events. Many SEPs have high enough energies to make nuclides in material in which they interact. Some nuclides measured in lunar samples have been used to extend the record about SEPs back several million years. Some new measurements of modern SEPs during the last solar cycle and new results for nuclides made by SEPs in lunar samples are presented and their implications discussed. Both the modern and ancient records need to be improved, and methods to get a better understanding of solar energetic particles are discussed. The SEP average fluxes from both sets of records are similar, and both sets can be used to show that huge fluxes of SEPs are very rare.

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14 p.

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OSTI as DE98002982

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  • International conference on isotopes in the solar system, Ahmedabad (India), 11-14 Nov 1997

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  • Other: DE98002982
  • Report No.: LA-UR--98-1742
  • Report No.: CONF-9711196--
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 296740
  • Archival Resource Key: ark:/67531/metadc683859

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  • October 1, 1998

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  • July 25, 2015, 2:20 a.m.

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  • Aug. 8, 2016, 8:37 p.m.

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Reedy, R.C. Studies of modern and ancient solar energetic particles, article, October 1, 1998; New Mexico. (digital.library.unt.edu/ark:/67531/metadc683859/: accessed September 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.