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 journalArticle

2 Citations (Scopus)

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 languageEnglish (US)
Pages (from-to)779-784
Number of pages6
JournalAdvances in Space Research
Volume27
Issue number4
DOIs
StatePublished - Aug 2 2001
Externally publishedYes

Fingerprint

Ionization potential
Cosmic rays
volatility
ionization potentials
cosmic ray
ionization
Fractionation
Chemical analysis
Spacecraft
condensation
Condensation
energetic particles
spacecraft
energetics
fractionation
acceptability
cosmic rays
estimates
temperature
Temperature

ASJC Scopus subject areas

  • Aerospace Engineering
  • Space and Planetary Science

Cite this

George, J. S., Wiedenbeck, M. E., Barghouty, A. F., Binns, W. R., Christian, E. R., Cummings, A. C., ... 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

Distinguishing galactic cosmic-ray source models with first ionization potential and volatility. / 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, Nathan Eugene.

In: Advances in Space Research, Vol. 27, No. 4, 02.08.2001, p. 779-784.

Research output: Contribution to journalArticle

George, JS, Wiedenbeck, ME, Barghouty, AF, Binns, WR, Christian, ER, Cummings, AC, Hink, PL, Leske, RA, Mewaldt, RA, Stone, EC, Von Rosenvinge, TT & Yanasak, NE 2001, 'Distinguishing galactic cosmic-ray source models with first ionization potential and volatility', Advances in Space Research, vol. 27, no. 4, pp. 779-784. https://doi.org/10.1016/S0273-1177(01)00116-8
George JS, Wiedenbeck ME, Barghouty AF, Binns WR, Christian ER, Cummings AC et al. Distinguishing galactic cosmic-ray source models with first ionization potential and volatility. Advances in Space Research. 2001 Aug 2;27(4):779-784. https://doi.org/10.1016/S0273-1177(01)00116-8
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, Nathan Eugene. / Distinguishing galactic cosmic-ray source models with first ionization potential and volatility. In: Advances in Space Research. 2001 ; Vol. 27, No. 4. pp. 779-784.
@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",
month = "8",
day = "2",
doi = "10.1016/S0273-1177(01)00116-8",
language = "English (US)",
volume = "27",
pages = "779--784",
journal = "Advances in Space Research",
issn = "0273-1177",
publisher = "Elsevier Limited",
number = "4",

}

TY - JOUR

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 - 2001/8/2

Y1 - 2001/8/2

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.

UR - http://www.scopus.com/inward/record.url?scp=6644227744&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=6644227744&partnerID=8YFLogxK

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

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

M3 - Article

AN - SCOPUS:6644227744

VL - 27

SP - 779

EP - 784

JO - Advances in Space Research

JF - Advances in Space Research

SN - 0273-1177

IS - 4

ER -