Observations of the Li, Be, and B isotopes and constraints on cosmic-ray propagation

G. A. de Nolfo; I. V. Moskalenko; W. R. Binns; E. R. Christian; A. C. Cummings; A. J. Davis; J. S. George; P. L. Hink; M. H. Israel; R. A. Leske; M. Lijowski; R. A. Mewaldt; E. C. Stone; A. W. Strong; T. T. von Rosenvinge; M. E. Wiedenbeck; Nathan Eugene Yanasak

doi:10.1016/j.asr.2006.09.008

Observations of the Li, Be, and B isotopes and constraints on cosmic-ray propagation

G. A. de Nolfo, I. V. Moskalenko, W. R. Binns, E. R. Christian, A. C. Cummings, A. J. Davis, J. S. George, P. L. Hink, M. H. Israel, R. A. Leske, M. Lijowski, R. A. Mewaldt, E. C. Stone, A. W. Strong, T. T. von Rosenvinge, M. E. Wiedenbeck, Nathan Eugene Yanasak

Radiology and Imaging

Research output: Contribution to journal › Article › peer-review

59 Scopus citations

Abstract

The abundance of Li, Be, and B isotopes in galactic cosmic rays (GCRs) between E = 50 and 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, and 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 ∼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.

Original language	English (US)
Pages (from-to)	1558-1564
Number of pages	7
Journal	Advances in Space Research
Volume	38
Issue number	7
DOIs	https://doi.org/10.1016/j.asr.2006.09.008
State	Published - 2006

Keywords

Cosmic rays
Galaxy
ISM
abundances
evolution
general

ASJC Scopus subject areas

Aerospace Engineering
Astronomy and Astrophysics
Geophysics
Atmospheric Science
Space and Planetary Science
Earth and Planetary Sciences(all)

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10.1016/j.asr.2006.09.008

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de Nolfo, G. A., Moskalenko, I. V., Binns, W. R., Christian, E. R., Cummings, A. C., Davis, A. J., George, J. S., Hink, P. L., Israel, M. H., Leske, R. A., Lijowski, M., Mewaldt, R. A., Stone, E. C., Strong, A. W., von Rosenvinge, T. T., Wiedenbeck, M. E., & Yanasak, N. E. (2006). Observations of the Li, Be, and B isotopes and constraints on cosmic-ray propagation. Advances in Space Research, 38(7), 1558-1564. https://doi.org/10.1016/j.asr.2006.09.008

de Nolfo, GA, Moskalenko, IV, Binns, WR, Christian, ER, Cummings, AC, Davis, AJ, George, JS, Hink, PL, Israel, MH, Leske, RA, Lijowski, M, Mewaldt, RA, Stone, EC, Strong, AW, von Rosenvinge, TT, Wiedenbeck, ME & Yanasak, NE 2006, 'Observations of the Li, Be, and B isotopes and constraints on cosmic-ray propagation', Advances in Space Research, vol. 38, no. 7, pp. 1558-1564. https://doi.org/10.1016/j.asr.2006.09.008

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title = "Observations of the Li, Be, and B isotopes and constraints on cosmic-ray propagation",

abstract = "The abundance of Li, Be, and B isotopes in galactic cosmic rays (GCRs) between E = 50 and 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, and 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 ∼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.",

keywords = "Cosmic rays, Galaxy, ISM, abundances, evolution, general",

author = "{de Nolfo}, {G. A.} and Moskalenko, {I. V.} and Binns, {W. R.} and Christian, {E. R.} and Cummings, {A. C.} and Davis, {A. J.} and George, {J. S.} and Hink, {P. L.} and Israel, {M. H.} and Leske, {R. A.} and M. Lijowski and Mewaldt, {R. A.} and Stone, {E. C.} and Strong, {A. W.} and {von Rosenvinge}, {T. T.} and Wiedenbeck, {M. E.} and Yanasak, {Nathan Eugene}",

note = "Funding Information: This research was supported by NASA at the NASA/Goddard Space Flight Center, the California Institute of Technology, (Grant NAG5-6912), the Jet Propulsion Laboratory, and Washington University. I.V.M. acknowledges partial support from NASA Astrophysics Theory Program (ATP) grant and NASA Astronomy and Physics Research and Analysis Program (APRA) grant. ",

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doi = "10.1016/j.asr.2006.09.008",

language = "English (US)",

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T1 - Observations of the Li, Be, and B isotopes and constraints on cosmic-ray propagation

AU - de Nolfo, G. A.

AU - Moskalenko, I. V.

AU - Binns, W. R.

AU - Christian, E. R.

AU - Cummings, A. C.

AU - Davis, A. J.

AU - George, J. S.

AU - Hink, P. L.

AU - Israel, M. H.

AU - Leske, R. A.

AU - Lijowski, M.

AU - Mewaldt, R. A.

AU - Stone, E. C.

AU - Strong, A. W.

AU - von Rosenvinge, T. T.

AU - Wiedenbeck, M. E.

AU - Yanasak, Nathan Eugene

N1 - Funding Information: This research was supported by NASA at the NASA/Goddard Space Flight Center, the California Institute of Technology, (Grant NAG5-6912), the Jet Propulsion Laboratory, and Washington University. I.V.M. acknowledges partial support from NASA Astrophysics Theory Program (ATP) grant and NASA Astronomy and Physics Research and Analysis Program (APRA) grant.

PY - 2006

Y1 - 2006

N2 - The abundance of Li, Be, and B isotopes in galactic cosmic rays (GCRs) between E = 50 and 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, and 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 ∼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.

AB - The abundance of Li, Be, and B isotopes in galactic cosmic rays (GCRs) between E = 50 and 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, and 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 ∼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.

KW - Cosmic rays

KW - Galaxy

KW - ISM

KW - abundances

KW - evolution

KW - general

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Observations of the Li, Be, and B isotopes and constraints on cosmic-ray propagation

Abstract

Keywords

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