The time scale of the s-process
| dc.contributor.advisor | Clayton, Donald W. | en_US |
| dc.creator | Ward, Richard Arland | en_US |
| dc.date.accessioned | 2018-12-18T21:17:24Z | en_US |
| dc.date.available | 2018-12-18T21:17:24Z | en_US |
| dc.date.issued | 1974 | en_US |
| dc.description.abstract | The canonical s-process theory of heavy element formation is reformulated to allow for competition between beta decay and neutron capture at various nuclei along the path. Solutions to the resulting network equations at each branch are presented that do not require the assumption of steady flow of the neutron current. An approximate expression is also developed for the complete s-process that includes the effects of all possible branches. From the observed solar system abundances and measured capture cross sections several key branching ratios are inferred. Using recently calculated temperature-dependent beta decay rates, comparisons of adjacent branches then yield an estimate for the appropriate temperature and half-life against neutron capture at selected branch points. Possible extensions of the results to observations of freshly produced s-process material in the surfaces of individual stars are also discussed. | en_US |
| dc.format.digitalOrigin | reformatted digital | en_US |
| dc.format.extent | 108 pp | en_US |
| dc.identifier.callno | Thesis Sp. Sci. 1974 Ward | en_US |
| dc.identifier.citation | Ward, Richard Arland. "The time scale of the s-process." (1974) Master’s Thesis, Rice University. <a href="https://hdl.handle.net/1911/104098">https://hdl.handle.net/1911/104098</a>. | en_US |
| dc.identifier.digital | RICE1725 | en_US |
| dc.identifier.uri | https://hdl.handle.net/1911/104098 | en_US |
| dc.language.iso | eng | en_US |
| dc.rights | Copyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder. | en_US |
| dc.title | The time scale of the s-process | en_US |
| dc.type | Thesis | en_US |
| dc.type.material | Text | en_US |
| thesis.degree.department | Space Science | en_US |
| thesis.degree.discipline | Natural Sciences | en_US |
| thesis.degree.grantor | Rice University | en_US |
| thesis.degree.level | Masters | en_US |
| thesis.degree.name | Master of Science | en_US |
Files
Original bundle
1 - 1 of 1