ORCID Profile
0000-0002-1637-7502
Current Organisation
The University of Edinburgh
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Publisher: IOP Publishing
Date: 11-2022
Abstract: Nuclear astrophysics is a field at the intersection of nuclear physics and astrophysics, which seeks to understand the nuclear engines of astronomical objects and the origin of the chemical elements. This white paper summarizes progress and status of the field, the new open questions that have emerged, and the tremendous scientific opportunities that have opened up with major advances in capabilities across an ever growing number of disciplines and subfields that need to be integrated. We take a holistic view of the field discussing the unique challenges and opportunities in nuclear astrophysics in regards to science, ersity, education, and the interdisciplinarity and breadth of the field. Clearly nuclear astrophysics is a dynamic field with a bright future that is entering a new era of discovery opportunities.
Publisher: EDP Sciences
Date: 2023
DOI: 10.1051/EPJCONF/202327911006
Abstract: Neutron-induced reaction cross sections of unstable nuclei are essential for understanding the synthesis of heavy elements in stars. However, their measurement is very difficult due to the radioactivity of the targets involved. We propose to circumvent this problem by using for the first time the surrogate reaction method in inverse kinematics at heavy-ion storage rings. In this contribution, we describe the developments we have done to perform surrogate-reaction studies at the storage rings of GSI/FAIR. In particular, we present the first results of the proof of principle experiment, which we conducted recently at the Experimental Storage Ring (ESR).
Publisher: EDP Sciences
Date: 2023
DOI: 10.1051/EPJCONF/202327911018
Abstract: Experimental determination of the cross sections of proton capture on radioactive nuclei is extremely difficult. Therefore, it is of substantial interest for the understanding of the production of the p-nuclei. For the first time, a direct measurement of proton-capture cross sections on stored, radioactive ions became possible in an energy range of interest for nuclear astrophysics. The experiment was performed at the Experimental Storage Ring (ESR) at GSI by making use of a sensitive method to measure (p, γ ) and (p,n) reactions in inverse kinematics. These reaction channels are of high relevance for the nucleosyn-thesis processes in supernovae, which are among the most violent explosions in the universe and are not yet well understood. The cross section of the 118 Te(p, γ ) reaction has been measured at energies of 6 MeV/u and 7 MeV/u. The heavy ions interacted with a hydrogen gas jet target. The radiative recombination process of the fully stripped 118 Te ions and electrons from the hydrogen target was used as a luminosity monitor. An overview of the experimental method and preliminary results from the ongoing analysis will be presented.
Publisher: arXiv
Date: 2022
Publisher: EDP Sciences
Date: 2023
DOI: 10.1051/EPJCONF/202327906010
Abstract: Bound-state β − -decay is an exotic decay mode that produces temperature-dependent stability in nuclei. A striking ex le is 205 Tl, in part because of its impact on the 205 Pb/ 204 Pb cosmochronometer—a short-lived ra-dionuclide clock that can provide unique constraints on s process material in the early solar system. The bound-state β − -decay of 205 Tl was measured at GSI, where fully stripped 205 Tl 81+ ions were produced and stored in the Experimental Storage Ring. Decay occurred during storage producing increased 205 Pb daughters with increased storage time. This contribution briefly outlines the experiment and describes analytical corrections required to extract the half-life.
Location: United Kingdom of Great Britain and Northern Ireland
No related grants have been discovered for Ragandeep Singh Sidhu.