Jan 21 – 25, 2019
Bormio, Italy
Europe/Berlin timezone

Studies of the nucleosynthesis $^{12}\mathrm C(\alpha,\gamma)^{16}\mathrm O$ in inverse kinematic for the MAGIX experiment on MESA

Jan 21, 2019, 5:00 PM
Bormio, Italy

Bormio, Italy


Mr Stefan Lunkenheimer (KPH)


MAGIX is a versatile fixed-target experiment and will be built on the new accelerator MESA (Mainz Energy-Recovering Superconducting Accelerator) in Mainz. The accelerator will deliver polarized electron beams with currents up to $1\,\mathrm{mA}$ and energy up to $105\,\mathrm{MeV}$. Using its internal gas-target, MAGIX will reach a luminosity of $\mathcal{O}(10^{35}\,\mathrm{cm}^{−2}\mathrm{s}^{−1})$. This allows to study processes with very low cross section at small momentum transfer in a rich physical program. The poster presents the planned measurements of the nucleosynthesis process $^{12}\mathrm C(\alpha,\gamma)^{16}\mathrm O$ to determine its S-factor. In the experiment we will scatter electrons on oxygen atoms and we will detect the scattered electrons in coincidence with the produced $\alpha$-particles. With this measurement we will determine the cross section of the inverse kinematic as a function of the outgoing center of mass energy of the carbon-$\alpha$-system to calculate the S-factor. Hereby we will present the results of the actual simulations and the parameter range that MAGIX will be able to explore. Additionally the planned experimental setup will be discussed.

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