Cohen, C. M. S. and Cummings, A. C. and Leske, R. A. and Mewaldt, R. A. and Stone, E. C. and Dougherty, B. L. and Wiedenbeck, M. E. and Christian, E. R. and von Rosenvinge, T. T.
(1999)
Inferred charge states of high energy solar particles from the Solar Isotope Spectrometer on ACE.
Geophysical Research Letters, 26
(2).
pp. 149-152.
ISSN 0094-8276.
doi:10.1029/1998GL900218.
https://resolver.caltech.edu/CaltechAUTHORS:20140827-114427003
![[img]](https://authors.library.caltech.edu/48990/1.hassmallThumbnailVersion/grl11860.pdf)  Preview |
|
PDF
- Published Version
See Usage Policy.
1MB |
Use this Persistent URL to link to this item: https://resolver.caltech.edu/CaltechAUTHORS:20140827-114427003
Abstract
The large solar event on November 6, 1997, was enriched in heavy elements (Fe/O ∼ 1) with very hard energy spectra (power law index of −2). There was also a large enrichment in heavier isotopes, suggesting unusually strong charge to mass (Q/M) fractionation (∼(Q/M)^(−7)). Assuming that the fractionation is dominated by Q/M and first ionization potential (FIP) related processes, we have inferred the charge states of twelve elements with energies of 12–60 MeV/nucleon. These results suggest a source temperature of 3–6 × 10^6K, significantly higher than deduced at lower energies.
| Item Type: | Article |
|---|
| Related URLs: | |
|---|
| ORCID: | |
|---|
| Additional Information: | © 1999 by the American Geophysical Union. Received: September 2, 1998; Revised: October 29, 1998; Accepted: November 3, 1998.
Paper number 1998GL900218.
We thank the large group of dedicated individuals that contributed to the development of the SIS instrument (listed in Stone et al. 1998). This research was supported by NASA at the California Institute of Technology (under grant NAG5-6912), the Jet
Propulsion Laboratory, and the Goddard Space Flight Center. |
|---|
| Group: | Space Radiation Laboratory |
|---|
| Funders: | | Funding Agency | Grant Number |
|---|
| NASA | NAG5-6912 | | JPL | UNSPECIFIED | | Goddard Space Flight Center | UNSPECIFIED |
|
|---|
| Other Numbering System: | | Other Numbering System Name | Other Numbering System ID |
|---|
| Space Radiation Laboratory | 1998-05 |
|
|---|
| Issue or Number: | 2 |
|---|
| DOI: | 10.1029/1998GL900218 |
|---|
| Record Number: | CaltechAUTHORS:20140827-114427003 |
|---|
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20140827-114427003 |
|---|
| Official Citation: | Inferred charge states of high energy solar particles from the solar isotope spectrometer on ACE (pages 149–152)
C. M. S. Cohen, A. C. Cummings, R. A. Leske, R. A. Mewaldt, E. C. Stone, B. L. Dougherty, M. E. Wiedenbeck, E. R. Christian and T. T. von Rosenvinge
DOI: 10.1029/1998GL900218 |
|---|
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. |
|---|
| ID Code: | 48990 |
|---|
| Collection: | CaltechAUTHORS |
|---|
| Deposited By: |
Ruth Sustaita
|
|---|
| Deposited On: | 27 Aug 2014 19:59 |
|---|
| Last Modified: | 10 Nov 2021 18:38 |
|---|
Repository Staff Only: item control page
