# Nuclear Physics in Astrophysics - X

Sep 4 – 9, 2022
CERN
Europe/Zurich timezone

## Results of total and partial cross-section measurements of the $^{87}$Rb$(p,\gamma)^{88}$Sr reaction

Sep 6, 2022, 6:00 PM
3h
61/1-201 - Pas perdus - Not a meeting room - (CERN)

Show room on map
Poster

### Speaker

Ms Svenja Wilden (University of Cologne)

### Description

The existence of most of the stable very neutron deficient nuclei - the $p$ nuclei - cannot be explained via neutron-capture reactions. Therefore, at least one other process has to exist in order to describe their origin, the $\gamma$ process. Since most photodisintegration reactions involved in the process are not directly accessible, reliable statistical model calculations are needed to predict cross sections and reaction rates. To improve the calculations the nuclear input parameters need to be constrained and a large experimental database is needed. Via comparison of experimental data to theoretical predictions different models can be excluded or constrained.
In order to study the $^{87}$Rb$(p,\gamma)^{88}$Sr reaction, for the first time an in-beam experiment at the high-efficiency HPGe $\gamma$-ray spectrometer HORUS at the University of Cologne was performed. Proton beams with energies between $E_p = 2.0 - 5.0$ MeV inside the Gamow window were provided by the 10 MV FN Tandem accelerator.

Supported by the DFG (ZI 510/8-2)

### Primary author

Ms Svenja Wilden (University of Cologne)

### Co-authors

Dr Felix Heim (University of Cologne) Prof. Andreas Zilges (University of Cologne) Mr Martin Müller (University of Cologne)