Leske, R. A. and Cohen, C. M. S. and Cummings, A. C. 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)
Unusual isotopic composition of solar energetic particles observed in the November 6, 1997 event.
Geophysical Research Letters, 26
(2).
pp. 153-156.
ISSN 0094-8276.
doi:10.1029/1998GL900173.
https://resolver.caltech.edu/CaltechAUTHORS:20140827-113048212
![[img]](https://authors.library.caltech.edu/48989/1.hassmallThumbnailVersion/grl11817.pdf)  Preview |
|
PDF
- Published Version
See Usage Policy.
1MB |
Use this Persistent URL to link to this item: https://resolver.caltech.edu/CaltechAUTHORS:20140827-113048212
Abstract
Using the Solar Isotope Spectrometer on the Advanced Composition Explorer, we have measured the isotopic composition of solar energetic particles (SEPs) with energies of tens of MeV/nucleon during the November 6, 1997 solar event, including isotopes never before reported in SEPs, such as ^(34)S, ^(38)Ar, ^(44)Ca, ^(54)Fe, and ^(60)Ni, as well as isotopes of C, N, O, Ne, Mg, and Si. Abundances are found to be enhanced by factors of ∼2 relative to the standard solar system values for ^(22)Ne/^(20)Ne and ^(26)Mg/^(24)Mg. Overall, the enrichments of the isotope ratios show a correlation with the ratio of masses, M_2/M_1, scaling approximately as (M_2/M_1)^7, although significant deviations from this trend are evident.
| Item Type: | Article |
|---|
| Related URLs: | |
|---|
| ORCID: | |
|---|
| Additional Information: | © 1998 by the American Geophysical Union. Received September 9, 1998; accepted October 2, 1998.
Paper number 1998GL900173.
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. We are grateful to the large group
of dedicated and talented individuals who made the ACE
mission possible and contributed to the development of the
SIS instrument (as acknowledged in Stone et al., (1998]). |
|---|
| 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 | 1998-04 |
|
|---|
| Issue or Number: | 2 |
|---|
| DOI: | 10.1029/1998GL900173 |
|---|
| Record Number: | CaltechAUTHORS:20140827-113048212 |
|---|
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20140827-113048212 |
|---|
| Official Citation: | Unusual isotopic composition of solar energetic particles observed in the November 6, 1997 event (pages 153–156)
R. A. Leske, C. M. S. Cohen, A. C. Cummings, R. A. Mewaldt, E. C. Stone, B. L. Dougherty, M. E. Wiedenbeck, E. R. Christian and T. T. von Rosenvinge
DOI: 10.1029/1998GL900173 |
|---|
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. |
|---|
| ID Code: | 48989 |
|---|
| Collection: | CaltechAUTHORS |
|---|
| Deposited By: |
Ruth Sustaita
|
|---|
| Deposited On: | 27 Aug 2014 19:53 |
|---|
| Last Modified: | 10 Nov 2021 18:38 |
|---|
Repository Staff Only: item control page
