Wasserburg, G. J. (1999) Short-lived nuclei in the early solar system and a diversity of r-processes. Abstracts of Papers of the American Chemical Society, 217 . U13-U13. ISSN 0065-7727. https://resolver.caltech.edu/CaltechAUTHORS:20140204-083216771
Full text is not posted in this repository.
Use this Persistent URL to link to this item: https://resolver.caltech.edu/CaltechAUTHORS:20140204-083216771
Abstract
It is established that Pu-244, Hf-182, I-129, Pd-107, Fe-60, Mn-53, Ca-41, and Al-26 were present in the early solar system. Several stellar sources are responsible for producing these nuclei. Short-lived Al-26 and Ca-41 require a very late stage injection into the proto-solar nebula and rapid accretion of the sun (~7x10^(25)y). I-129 is produced only by the r-process in low abundance, requiring long term contributions to the solar nebula cease ~10^8 y prior to collapse. In contrast, Hf-182, with a larger-process component, is in high abundance, requiring a time scale of ~10^7 y. This discrepancy requires distinctive SN sites for production of the r-process. Furthermore, from neutrino interactions competing with beta decays, the two r-processes cannot be produced in a single scenario. Using the results of Richter, Ott, and Begemann and considering neutrino spallation reactions during post processing, we calculate the dynamic scale for SNII to be tau < 0.85 s.
Item Type: | Article | ||||
---|---|---|---|---|---|
ORCID: |
| ||||
Additional Information: | © 1999 American Chemical Society. | ||||
Record Number: | CaltechAUTHORS:20140204-083216771 | ||||
Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20140204-083216771 | ||||
Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||
ID Code: | 43637 | ||||
Collection: | CaltechAUTHORS | ||||
Deposited By: | Tony Diaz | ||||
Deposited On: | 25 Feb 2014 17:43 | ||||
Last Modified: | 09 Mar 2020 13:19 |
Repository Staff Only: item control page