Computer Science
Scientific paper
Nov 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aipc..598..101w&link_type=abstract
SOLAR AND GALACTIC COMPOSITION: A Joint SOHO/ACE Workshop. AIP Conference Proceedings, Volume 598, pp. 101-106 (2001).
Computer Science
3
Composition, Particle Emission, Solar Wind, Solar Instruments
Scientific paper
This study examines the first direct measurements of the solar wind (SW) Ar/Ca elemental abundance ratio with the Mass Time-Of-Flight (MTOF) sensor of the Charge, Element, and Isotope Analysis System (CELIAS) instrument on the Solar and Heliospheric Observatory (SOHO) spacecraft. Two mass spectra are compiled for interstream (IS) associated SW and coronal hole (CH) associated SW. A detailed analysis of over 3.6 days of non-consecutive IS associated SW speed (395+/-25 km/s) places the Ar/Ca elemental ratio at 0.38+/-0.05. A similar analysis for CH associated SW speed (525+/-25 km/s), with about 5.6 non-consecutive days of CH associated SW speed data, derived an Ar/Ca ratio of 0.59+/-0.07. The results of this study are consistent with most previously published Ar/Ca values from gradual solar energetic particle events and spectroscopy studies. .
Bochsler Peter
Ipavich Fred M.
Paquette John A.
Weygand James M.
Wurz Peter
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