University of Hertfordshire

By the same authors

Quantification of nuclear uncertainties in nucleosynthesis of elements beyond Iron

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Standard

Quantification of nuclear uncertainties in nucleosynthesis of elements beyond Iron. / Rauscher, Thomas.

Proceedings of Science. ed. / Z Elekes; Z Fulop. Vol. 7 Proceedings of Science (PoS), 2015. 026.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Harvard

Rauscher, T 2015, Quantification of nuclear uncertainties in nucleosynthesis of elements beyond Iron. in Z Elekes & Z Fulop (eds), Proceedings of Science. vol. 7, 026, Proceedings of Science (PoS), 13th Nuclei in the Cosmos, Debrecen, Hungary, 7/07/14.

APA

Rauscher, T. (2015). Quantification of nuclear uncertainties in nucleosynthesis of elements beyond Iron. In Z. Elekes, & Z. Fulop (Eds.), Proceedings of Science (Vol. 7). [026] Proceedings of Science (PoS).

Vancouver

Rauscher T. Quantification of nuclear uncertainties in nucleosynthesis of elements beyond Iron. In Elekes Z, Fulop Z, editors, Proceedings of Science. Vol. 7. Proceedings of Science (PoS). 2015. 026

Author

Rauscher, Thomas. / Quantification of nuclear uncertainties in nucleosynthesis of elements beyond Iron. Proceedings of Science. editor / Z Elekes ; Z Fulop. Vol. 7 Proceedings of Science (PoS), 2015.

Bibtex

@inproceedings{b21a0940f51f4d7c8ac0135df59099e0,
title = "Quantification of nuclear uncertainties in nucleosynthesis of elements beyond Iron",
abstract = "Nucleosynthesis beyond Fe poses additional challenges not encountered when studying astrophysical processes involving light nuclei. Generally higher temperatures and nuclear level densities lead to stronger contributions of transitions on excited target states. This may prevent cross section measurements to determine stellar reaction rates and theory contributions remain important. Furthermore, measurements often are not feasible in the astrophysically relevant energy range. Sensitivity analysis allows not only to determine the contributing nuclear properties but also is a handy tool for experimentalists to interpret the impact of their data on predicted cross sections and rates. It can also speed up future input variation studies of nucleosynthesis by simplifying an intermediate step in the full calculation sequence. Large-scale predictions of sensitivities and ground-state contributions to the stellar rates are presented, allowing an estimate of how well rates can be directly constrained by experiment. The reactions 185W(n,γ) and 186W(γ,n) are discussed as application examples. Studies of uncertainties in abundances predicted in nucleosynthesis simulations rely on the knowledge of reaction rate errors. An improved treatment of uncertainty analysis is presented as well as a recipe for combining experimental data and theory to arrive at a new reaction rate and its uncertainty. As an example, it is applied to neutron capture rates for the s-process, leading to larger uncertainties than previously assumed. ",
author = "Thomas Rauscher",
note = "Thomas Rauscher, 'Quantification of nuclear uncertainties in nucleosynthesis of elements beyond Iron', in Proceedings of Science, Vol. 7 (7) July 2015. Paper presented at the XIII Nuclei in the Cosmos Conference, 7-11 July 2014, Debrecen, Hungary. {\textcopyright} Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.; 13th Nuclei in the Cosmos : NIC 2014 ; Conference date: 07-07-2014 Through 11-07-2014",
year = "2015",
month = jul,
day = "11",
language = "English",
volume = "7",
editor = "Z Elekes and Z Fulop",
booktitle = "Proceedings of Science",
publisher = "Proceedings of Science (PoS)",

}

RIS

TY - GEN

T1 - Quantification of nuclear uncertainties in nucleosynthesis of elements beyond Iron

AU - Rauscher, Thomas

N1 - Thomas Rauscher, 'Quantification of nuclear uncertainties in nucleosynthesis of elements beyond Iron', in Proceedings of Science, Vol. 7 (7) July 2015. Paper presented at the XIII Nuclei in the Cosmos Conference, 7-11 July 2014, Debrecen, Hungary. © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.

PY - 2015/7/11

Y1 - 2015/7/11

N2 - Nucleosynthesis beyond Fe poses additional challenges not encountered when studying astrophysical processes involving light nuclei. Generally higher temperatures and nuclear level densities lead to stronger contributions of transitions on excited target states. This may prevent cross section measurements to determine stellar reaction rates and theory contributions remain important. Furthermore, measurements often are not feasible in the astrophysically relevant energy range. Sensitivity analysis allows not only to determine the contributing nuclear properties but also is a handy tool for experimentalists to interpret the impact of their data on predicted cross sections and rates. It can also speed up future input variation studies of nucleosynthesis by simplifying an intermediate step in the full calculation sequence. Large-scale predictions of sensitivities and ground-state contributions to the stellar rates are presented, allowing an estimate of how well rates can be directly constrained by experiment. The reactions 185W(n,γ) and 186W(γ,n) are discussed as application examples. Studies of uncertainties in abundances predicted in nucleosynthesis simulations rely on the knowledge of reaction rate errors. An improved treatment of uncertainty analysis is presented as well as a recipe for combining experimental data and theory to arrive at a new reaction rate and its uncertainty. As an example, it is applied to neutron capture rates for the s-process, leading to larger uncertainties than previously assumed.

AB - Nucleosynthesis beyond Fe poses additional challenges not encountered when studying astrophysical processes involving light nuclei. Generally higher temperatures and nuclear level densities lead to stronger contributions of transitions on excited target states. This may prevent cross section measurements to determine stellar reaction rates and theory contributions remain important. Furthermore, measurements often are not feasible in the astrophysically relevant energy range. Sensitivity analysis allows not only to determine the contributing nuclear properties but also is a handy tool for experimentalists to interpret the impact of their data on predicted cross sections and rates. It can also speed up future input variation studies of nucleosynthesis by simplifying an intermediate step in the full calculation sequence. Large-scale predictions of sensitivities and ground-state contributions to the stellar rates are presented, allowing an estimate of how well rates can be directly constrained by experiment. The reactions 185W(n,γ) and 186W(γ,n) are discussed as application examples. Studies of uncertainties in abundances predicted in nucleosynthesis simulations rely on the knowledge of reaction rate errors. An improved treatment of uncertainty analysis is presented as well as a recipe for combining experimental data and theory to arrive at a new reaction rate and its uncertainty. As an example, it is applied to neutron capture rates for the s-process, leading to larger uncertainties than previously assumed.

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-84957699261&origin=inward&txGid=0CE3C8A101018AB7E4FF9276DFF4831C.wsnAw8kcdt7IPYLO0V48gA%3a1

M3 - Conference contribution

VL - 7

BT - Proceedings of Science

A2 - Elekes, Z

A2 - Fulop, Z

PB - Proceedings of Science (PoS)

T2 - 13th Nuclei in the Cosmos

Y2 - 7 July 2014 through 11 July 2014

ER -