Observations of the Li, Be, and B isotopes and Constraints on Cosmic-ray Propagation

PDF Version Also Available for Download.

Description

The abundance of Li, Be, and B isotopes in galactic cosmic rays (GCR) between E=50-200 MeV/nucleon has been observed by the Cosmic Ray Isotope Spectrometer (CRIS) on NASA's ACE mission since 1997 with high statistical accuracy. Precise observations of Li, Be, B can be used to constrain GCR propagation models. We find that a diffusive reacceleration model with parameters that best match CRIS results (e.g. B/C, Li/C, etc) are also consistent with other GCR observations. A {approx}15-20% overproduction of Li and Be in the model predictions is attributed to uncertainties in the production cross-section data. The latter becomes a significant ... continued below

Physical Description

9 pages

Creation Information

de Nolfo, Georgia A.; Moskalenko, I. V.; Binns, W. R.; Christian, E. R.; Cummings, A. C.; Davis, A. J. et al. November 15, 2006.

Context

This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. More information about this article can be viewed below.

Who

People and organizations associated with either the creation of this article or its content.

Authors

  • de Nolfo, Georgia A. NASA/Goddard Space Flight Center, Code 661, Greenbelt, MD 20771 USA
  • Moskalenko, I. V. HEPL/Stanford University, Stanford, CA 94305 USA; NASA/Goddard Space Flight Center, Code 661, Greenbelt, MD 20771 USA
  • Binns, W. R. Department of Physics and McDonnell Center for the Space Sciences, Washington University, St. Louis, MO 63130 USA
  • Christian, E. R. NASA Headquarters, Washington DC 20546, USA
  • Cummings, A. C. Space Radiation Laboratory, California Institute of Technology, Pasadena, CA 91125 USA
  • Davis, A. J. Space Radiation Laboratory, California Institute of Technology, Pasadena, CA 91125 USA
  • George, J. S. Space Radiation Laboratory, California Institute of Technology, Pasadena, CA 91125 USA; The Aerospace Corporation, M2/260, Los Angeles, CA 90009, USA
  • Hink, P. L. Department of Physics and McDonnell Center for the Space Sciences, Washington University, St. Louis, MO 63130 USA
  • Israel, M. H. Department of Physics and McDonnell Center for the Space Sciences, Washington University, St. Louis, MO 63130 USA
  • Leske, R. A. Space Radiation Laboratory, California Institute of Technology, Pasadena, CA 91125 USA; The Aerospace Corporation, M2/260, Los Angeles, CA 90009, USA
  • Lijowski, M. Department of Physics and McDonnell Center for the Space Sciences, Washington University, St. Louis, MO 63130 USA
  • Mewaldt, R. A. Space Radiation Laboratory, California Institute of Technology, Pasadena, CA 91125 USA; The Aerospace Corporation, M2/260, Los Angeles, CA 90009, USA
  • Stone, E. C. Space Radiation Laboratory, California Institute of Technology, Pasadena, CA 91125 USA; The Aerospace Corporation, M2/260, Los Angeles, CA 90009, USA
  • Strong, A. W. Max-Plank-Institut für extraterrestische Physik, Postfach 1603, D-85740 Garching, Germany
  • von Rosenvinge, T. T. NASA/Goddard Space Flight Center, Code 661, Greenbelt, MD 20771 USA
  • Wiedenbeck, M. E. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109 USA
  • Yanasak, N. E. Space Radiation Laboratory, California Institute of Technology, Pasadena, CA 91125 USA; The Aerospace Corporation, M2/260, Los Angeles, CA 90009, USA

Publisher

Provided By

UNT Libraries Government Documents Department

Serving as both a federal and a state depository library, the UNT Libraries Government Documents Department maintains millions of items in a variety of formats. The department is a member of the FDLP Content Partnerships Program and an Affiliated Archive of the National Archives.

Contact Us

What

Descriptive information to help identify this article. Follow the links below to find similar items on the Digital Library.

Description

The abundance of Li, Be, and B isotopes in galactic cosmic rays (GCR) between E=50-200 MeV/nucleon has been observed by the Cosmic Ray Isotope Spectrometer (CRIS) on NASA's ACE mission since 1997 with high statistical accuracy. Precise observations of Li, Be, B can be used to constrain GCR propagation models. We find that a diffusive reacceleration model with parameters that best match CRIS results (e.g. B/C, Li/C, etc) are also consistent with other GCR observations. A {approx}15-20% overproduction of Li and Be in the model predictions is attributed to uncertainties in the production cross-section data. The latter becomes a significant limitation to the study of rare GCR species that are generated predominantly via spallation.

Physical Description

9 pages

Source

  • Journal Name: Adv.Space Res.38:1558-1564,2006

Language

Item Type

Identifier

Unique identifying numbers for this article in the Digital Library or other systems.

  • Report No.: SLAC-PUB-12047
  • Grant Number: AC02-76SF00515
  • Office of Scientific & Technical Information Report Number: 895269
  • Archival Resource Key: ark:/67531/metadc889143

Collections

This article is part of the following collection of related materials.

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.

What responsibilities do I have when using this article?

When

Dates and time periods associated with this article.

Creation Date

  • November 15, 2006

Added to The UNT Digital Library

  • Sept. 22, 2016, 2:13 a.m.

Description Last Updated

  • July 13, 2017, 12:08 p.m.

Usage Statistics

When was this article last used?

Congratulations! It looks like you are the first person to view this item online.

Interact With This Article

Here are some suggestions for what to do next.

Start Reading

PDF Version Also Available for Download.

Citations, Rights, Re-Use

de Nolfo, Georgia A.; Moskalenko, I. V.; Binns, W. R.; Christian, E. R.; Cummings, A. C.; Davis, A. J. et al. Observations of the Li, Be, and B isotopes and Constraints on Cosmic-ray Propagation, article, November 15, 2006; [Menlo Park, California]. (digital.library.unt.edu/ark:/67531/metadc889143/: accessed October 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.