Determination and study of the cosmic-ray composition above 100 TeV

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This is the final report of a three-year, Laboratory Directed Research and Development (LDRD) project at the Los Alamos National Laboratory (LANL). The goal of this project was to develop a new technique using ground-based measurements to determine the cosmic-ray composition at energies around 10{sup 15} eV (the knee in the cosmic-ray spectrum). Cosmic rays are high-energy nuclei that continuously bombard the earth. Though cosmic rays were first detected in the 1870s it wasn`t until 1915 that their cosmic origin was established. At present, the authors still do not know the source of cosmic rays. At energies above 50 TeV ... continued below

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13 p.

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Sinnis, G.; Haines, T.J. & Hoffman, C.M. November 1, 1998.

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Description

This is the final report of a three-year, Laboratory Directed Research and Development (LDRD) project at the Los Alamos National Laboratory (LANL). The goal of this project was to develop a new technique using ground-based measurements to determine the cosmic-ray composition at energies around 10{sup 15} eV (the knee in the cosmic-ray spectrum). Cosmic rays are high-energy nuclei that continuously bombard the earth. Though cosmic rays were first detected in the 1870s it wasn`t until 1915 that their cosmic origin was established. At present, the authors still do not know the source of cosmic rays. At energies above 50 TeV (1 TeV = 1 trillion electron-volts) they do not know the composition of the cosmic rays. At about 5 PeV (1PeV = 10{sup 15} eV) the cosmic ray spectrum steepens. Knowledge of the composition above and below this point can help determine the origin of cosmic rays.

Physical Description

13 p.

Notes

OSTI as DE99000858

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  • Other Information: PBD: [1998]

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  • Other: DE99000858
  • Report No.: LA-UR--98-1526
  • Grant Number: W-7405-ENG-36
  • DOI: 10.2172/674872 | External Link
  • Office of Scientific & Technical Information Report Number: 674872
  • Archival Resource Key: ark:/67531/metadc705924

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • November 1, 1998

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  • Sept. 12, 2015, 6:31 a.m.

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  • May 5, 2016, 7:27 p.m.

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Sinnis, G.; Haines, T.J. & Hoffman, C.M. Determination and study of the cosmic-ray composition above 100 TeV, report, November 1, 1998; New Mexico. (digital.library.unt.edu/ark:/67531/metadc705924/: accessed December 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.