Münster 2011 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 16: Struktur und Dynamik von Kernen IV

HK 16.2: Vortrag

Dienstag, 22. März 2011, 14:30–14:45, O-1

Status and Perspectives of the Photofission Program at the S-DALINAC — •Alf Göök¹, Christian Eckardt¹, Joachim Enders¹, Martin Freudenberger¹, Franz-Josef Hambsch², Peter von Neumann-Cosel¹, Andreas Oberstedt^3,4, Stephan Oberstedt², and Achim Richter^1,5 — ¹Institut für Kernphysik, Technische Universität Darmstadt, Germany — ²EC-JRC IRMM, Geel, Belgium — ³Akademin för Naturvetenskap och Teknik, Örebro Universitet, Sweden — ⁴Fundamental Fysik, Chalmers Tekniska Högskola, Göteborg, Sweden — ⁵ECT*, Villazzano (Trento), Italy

The photofission program at the superconducting Darmstadt electron linear accelerator S-DALINAC aims at the investigation of parity non-conservation (PNC) using circularly polarized bremsstrahlung, as well as the study of fission properties. In a first test experiment with an unpolarized beam a twin Frisch grid ionization chamber was used to study fragment mass and total kinetic energy distributions from ²³⁸U and ²³⁴U. The results show that the experimental setup provides excellent conditions for photofission studies. With respect to a PNC experiment, however, the achievable luminosity is too small. A possible solution may be an active gas target. As a first step to such a device we are undertaking experimental investigations of UF₆ with respect to counting gas properties. Status and outlook of the different aspects of the S-DALINAC photofission program will be presented.

Supported by DFG through SFB634, through the TU Darmstadt-GSI cooperation contract, and by the state of Hesse through the LOEWE center HIC for FAIR.