Distinguishing galactic cosmic-ray source models with first ionization potential and volatility

J. S. George; M. E. Wiedenbeck; A. F. Barghouty; W. R. Binns; E. R. Christian; A. C. Cummings; P. L. Hink; R. A. Leske; R. A. Mewaldt; E. C. Stone; T. T. Von Rosenvinge; Nathan Eugene Yanasak

doi:10.1016/S0273-1177(01)00116-8

Distinguishing galactic cosmic-ray source models with first ionization potential and volatility

J. S. George, M. E. Wiedenbeck, A. F. Barghouty, W. R. Binns, E. R. Christian, A. C. Cummings, P. L. Hink, R. A. Leske, R. A. Mewaldt, E. C. Stone, T. T. Von Rosenvinge, Nathan Eugene Yanasak

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

2 Scopus citations

Abstract

Studies of the galactic cosmic-ray source composition reveal a pattern in the elemental abundances that may be controlled by the first ionization potential (FIP) or a closely correlated parameter, the condensation temperature (volatility). Determining the true parameter is key identifying the galactic cosmic-ray source (GCRS) material. Using data from the CRIS instrument onboard the ACE spacecraft, we examine five elements that are more volatile than other elements of similar FIP. Three of these (Na, Cu, Ge) show small deficits in their source abundances that may suggest a volatility-dependent fractionation. The source abundances of Ga and Zn (an intermediate FIP element) are consistent with either model. Possible systematic uncertainties from the cosmic-ray pathlength estimate as well as effects due to the instrumental acceptance are discussed. We also compare the GCRS composition to that observed in solar energetic particles.

Original language	English (US)
Pages (from-to)	779-784
Number of pages	6
Journal	Advances in Space Research
Volume	27
Issue number	4
DOIs	https://doi.org/10.1016/S0273-1177(01)00116-8
State	Published - 2001
Externally published	Yes

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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George, J. S., Wiedenbeck, M. E., Barghouty, A. F., Binns, W. R., Christian, E. R., Cummings, A. C., Hink, P. L., Leske, R. A., Mewaldt, R. A., Stone, E. C., Von Rosenvinge, T. T., & Yanasak, N. E. (2001). Distinguishing galactic cosmic-ray source models with first ionization potential and volatility. Advances in Space Research, 27(4), 779-784. https://doi.org/10.1016/S0273-1177(01)00116-8

@article{d0bf96a300584219b8fec77addce5b91,

title = "Distinguishing galactic cosmic-ray source models with first ionization potential and volatility",

abstract = "Studies of the galactic cosmic-ray source composition reveal a pattern in the elemental abundances that may be controlled by the first ionization potential (FIP) or a closely correlated parameter, the condensation temperature (volatility). Determining the true parameter is key identifying the galactic cosmic-ray source (GCRS) material. Using data from the CRIS instrument onboard the ACE spacecraft, we examine five elements that are more volatile than other elements of similar FIP. Three of these (Na, Cu, Ge) show small deficits in their source abundances that may suggest a volatility-dependent fractionation. The source abundances of Ga and Zn (an intermediate FIP element) are consistent with either model. Possible systematic uncertainties from the cosmic-ray pathlength estimate as well as effects due to the instrumental acceptance are discussed. We also compare the GCRS composition to that observed in solar energetic particles.",

author = "George, {J. S.} and Wiedenbeck, {M. E.} and Barghouty, {A. F.} and Binns, {W. R.} and Christian, {E. R.} and Cummings, {A. C.} and Hink, {P. L.} and Leske, {R. A.} and Mewaldt, {R. A.} and Stone, {E. C.} and {Von Rosenvinge}, {T. T.} and Yanasak, {Nathan Eugene}",

year = "2001",

doi = "10.1016/S0273-1177(01)00116-8",

language = "English (US)",

volume = "27",

pages = "779--784",

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T1 - Distinguishing galactic cosmic-ray source models with first ionization potential and volatility

AU - George, J. S.

AU - Wiedenbeck, M. E.

AU - Barghouty, A. F.

AU - Binns, W. R.

AU - Christian, E. R.

AU - Cummings, A. C.

AU - Hink, P. L.

AU - Leske, R. A.

AU - Mewaldt, R. A.

AU - Stone, E. C.

AU - Von Rosenvinge, T. T.

AU - Yanasak, Nathan Eugene

PY - 2001

Y1 - 2001

N2 - Studies of the galactic cosmic-ray source composition reveal a pattern in the elemental abundances that may be controlled by the first ionization potential (FIP) or a closely correlated parameter, the condensation temperature (volatility). Determining the true parameter is key identifying the galactic cosmic-ray source (GCRS) material. Using data from the CRIS instrument onboard the ACE spacecraft, we examine five elements that are more volatile than other elements of similar FIP. Three of these (Na, Cu, Ge) show small deficits in their source abundances that may suggest a volatility-dependent fractionation. The source abundances of Ga and Zn (an intermediate FIP element) are consistent with either model. Possible systematic uncertainties from the cosmic-ray pathlength estimate as well as effects due to the instrumental acceptance are discussed. We also compare the GCRS composition to that observed in solar energetic particles.

AB - Studies of the galactic cosmic-ray source composition reveal a pattern in the elemental abundances that may be controlled by the first ionization potential (FIP) or a closely correlated parameter, the condensation temperature (volatility). Determining the true parameter is key identifying the galactic cosmic-ray source (GCRS) material. Using data from the CRIS instrument onboard the ACE spacecraft, we examine five elements that are more volatile than other elements of similar FIP. Three of these (Na, Cu, Ge) show small deficits in their source abundances that may suggest a volatility-dependent fractionation. The source abundances of Ga and Zn (an intermediate FIP element) are consistent with either model. Possible systematic uncertainties from the cosmic-ray pathlength estimate as well as effects due to the instrumental acceptance are discussed. We also compare the GCRS composition to that observed in solar energetic particles.

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U2 - 10.1016/S0273-1177(01)00116-8

DO - 10.1016/S0273-1177(01)00116-8

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SN - 0273-1177

VL - 27

SP - 779

EP - 784

JO - Advances in Space Research

JF - Advances in Space Research

IS - 4

ER -

Distinguishing galactic cosmic-ray source models with first ionization potential and volatility

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