SFB 634: Nuclear Structure, Nuclear Astrophysics and Fundamental Experiments at Low Momentum Transfer at the Superconducting Darmstadt Electron Accelerator S-DALINAC

该合作研究中心旨在了解原子核的结构及其对天体物理过程的影响。利用超导达姆施塔特电子加速器S-DALINAC进行了真实的和虚光子核激发的实验研究。它们提供了对核电荷和电流分布的详细了解，从而能够在现代多体理论的背景下测试核动力学的描述。此外，这些实验提供了恒星演化和核合成的各个方面的信息，否则很难获得。例如，可以测量负责产生富含质子的重核以及中微子诱导的核合成的伽马过程的横截面。最后，一颗大质量星星的后期阶段及其超新星爆炸的路线是由基本核模式的激发所决定的，这些模式的性质在电子散射中得到了阐明。

The Collaborative Research Centre aims at an understanding of the structure of nuclei and its impact on astrophysical processes. The experiments focus on the study of nuclear excitations with real and virtual photons using the Superconducting Darmstadt Electron Accelerator S-DALINAC. They provide a detailed understanding of the nuclear charge and current distributions and thus enable to test descriptions of nuclear dynamics in the context of modern many body theory. Furthermore, the experiments provide information on various aspects of stellar evolution and nucleosynthesis otherwise hardly accessible. For example, cross sections for the gamma-process responsible for the production of proton-rich, heavy nuclei as well as for neutrino-induced nucleosynthesis can be measured. Finally, the late stages of a massive star and its route to a supernova explosion are governed by the excitation of elementary nuclear modes whose properties are elucidated in electron scattering.