Darmstadt 2016 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
HK: Fachverband Physik der Hadronen und Kerne
HK 11: Nuclear Astrophysics II
HK 11.5: Vortrag
Montag, 14. März 2016, 17:45–18:00, S1/01 A02
91Nb(p,γ) or There and back again — •Benedikt Thomas1, Andrey Blazhev2, Rugard Dressler3, Ulrich Giesen4, Jan Glorius1, Milan Kritčka5, Markus Reich1, René Reifarth1, Dorothea Schumann3, Kerstin Sonnabend1, and Karl-Oscar Zell2 — 1Goethe University Frankfurt a. M., Germany — 2University of Cologne, Germany — 3Paul-Scherrer Institute, Villigen, Switzerland — 4Physikalisch-Technische Bundesanstalt, Braunschweig, Germany — 5Charles University, Prague, Czech Republic
The cross section of the reaction 91Nb(p,γ)92Mo is of special interest to answer questions about the production of the most abundant p nucleus 92Mo. With 91Nb being a radioactive nucleus the measurement of this reaction in standard kinematics is a big challenge.
To produce a sufficent number of 91Nb isotopes an enriched 92Mo target was activated by protons at Ep = 19 MeV. Afterwards the produced 91Nb isotopes will be separated chemically and applied onto a tungsten backing. This will lead to approximately 1016 91Nb isotopes.
The high proton current delivered by the HF-linear-accelerator FRANZ currently built at Goethe University Frankfurt, Germany, enables the execution of measurement with such limited amount of target material. The goal of our investigation is the determination of the cross section of the 91Nb(p,γ)92Mo reaction at 2 MeV proton energy and thereby in the astrophysical relevant energy region. We will present the current status and the next steps towards the measurement of this cross section.
This work is supported by DFG (SO907/2-1) and HIC for FAIR.