EPJ Web of Conferences (Jan 2023)
Measurement of the 86Kr(α,n)89Sr cross section at energies relevant for the weak r-process
- Angus Cameron,
- Williams Matthew,
- Andreyev Andrei,
- Bhattacharjee Soumendu,
- Buck Samantha,
- Chakraborty Soham,
- Davids Barry,
- Diget Christian,
- Garnsworthy Adam,
- Griffin Chris,
- Fernandez Asunción,
- Hackman Greg,
- Hudson Kevan,
- Hufschmidt Dirk,
- Karayonchev Vasil,
- Kim Yong,
- Laird Alison,
- Lennarz Annika,
- Mashtakov Konstantin,
- Machule Peter,
- Natzke Connor,
- Pak Kihong,
- Psaltis Athanasios,
- Radich Allison,
- Rauscher Thomas,
- Rhodes Daniel,
- Sauvage Thierry,
- Simon Anna,
- Svensson Carl,
- Upadhyayula Sriteja,
- Williams Jonathan,
- Yates Daniel,
- Zidar Tammy
Affiliations
- Angus Cameron
- University of York
- Williams Matthew
- Triumf
- Andreyev Andrei
- University of York
- Bhattacharjee Soumendu
- CTU
- Buck Samantha
- University of Guelph
- Chakraborty Soham
- University of York
- Davids Barry
- Triumf
- Diget Christian
- University of York
- Garnsworthy Adam
- Triumf
- Griffin Chris
- Triumf
- Fernandez Asunción
- Instituto de Ciencia de Materiales de Sevilla, CSIC-Univ. Seville
- Hackman Greg
- Triumf
- Hudson Kevan
- Triumf
- Hufschmidt Dirk
- Instituto de Ciencia de Materiales de Sevilla, CSIC-Univ. Seville
- Karayonchev Vasil
- Triumf
- Kim Yong
- Hanyang University, 222 Wangsimni-ro, Seongdong-gu
- Laird Alison
- University of York
- Lennarz Annika
- Triumf
- Mashtakov Konstantin
- Triumf
- Machule Peter
- Triumf
- Natzke Connor
- Colorado School of Mines, 1500 Illinois St
- Pak Kihong
- Hanyang University, 222 Wangsimni-ro, Seongdong-gu
- Psaltis Athanasios
- Technische Universität Darmstadt
- Radich Allison
- University of Guelph
- Rauscher Thomas
- Department of Physics, University of Basel
- Rhodes Daniel
- Triumf
- Sauvage Thierry
- CEMHTI, UPR3079 CNRS, 1D avenue de la Recherche Scientifique
- Simon Anna
- University of Notre Dame
- Svensson Carl
- University of Guelph
- Upadhyayula Sriteja
- Triumf
- Williams Jonathan
- Triumf
- Yates Daniel
- Triumf
- Zidar Tammy
- University of Guelph
- DOI
- https://doi.org/10.1051/epjconf/202327911003
- Journal volume & issue
-
Vol. 279
p. 11003
Abstract
The r-process has been shown to be robust in reproducing the abundance distributions of heavy elements, such as europium, seen in ultra-metal poor stars. In contrast, observations of elements 26 < Z < 47 display overabundances relative to r-process model predictions. A proposed additional source of early nucleosynthesis is the weak r-process in neutrino-driven winds of core-collapse supernovae. It has been shown that in this site (α,n) reactions are both crucial to nucleosynthesis and the main source of uncertainty in model-based abundance predictions. Aiming to improve the certainty of nucleosynthesis predictions, the cross section of the important reaction 86Kr(α,n)89Sr has been measured at an energy relevant to the weak r-process. This experiment was conducted in inverse kinematics at TRIUMF with the EMMA recoil mass spectrometer and the TIGRESS gamma-ray spectrometer. A novel type of solid helium target was used.
