Mainz 2012 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

HK: Fachverband Physik der Hadronen und Kerne

HK 17: Anwendungen kernphysikalischer Methoden

HK 17.1: Gruppenbericht

Dienstag, 20. März 2012, 16:30–17:00, RW 3

Nuclear Photonics — •Dietrich Habs¹, Peter G. Thirolf², Marc Guenther¹, and Michael Jentschel³ — ¹MPI f. Quantenoptik, Garching — ²LMU München — ³ILL Grenoble

With the planned new γ beam facilities like MEGa-ray at LLNL (USA) or ELI-NP at Bucarest (Rumania) with 10¹³γ/s and a band width of Δ E_γ/E_γ≈ 10⁻³ a new era of γ beams comes into operation, compared to the present best HIγS facility at Duke University (USA) with 10⁷γ/s and Δ E_γ/E_γ≈ 3*10⁻². At the same time new exciting possibilities open up to focus γ beams orders of magnitude better than at present, where we observed for the first time, that the index of refraction for γ beams is determined by virtual pair creation. Also several orders of magnitude more efficient monochromators for γ beams are being developed. Thus we have to optimize the total system: the γ beam facility, the γ beam optics and γ detectors in an integrated way. We can trade γ intensity for band width and address individual nuclear levels. Here it is important, that we can address with γ beams individual nuclear isotopes and not elements like with X-ray beams. Furthermore γ beams can penetrade much deeper into big samples like radioactive waste barrels, motors or batteries, compared to X-rays. We discuss the main strong M1 and E1 excitations under the new facet of applications. We find many new applications in biomedicine, green energy, radioactive waste management or homeland security. Also many orders of magnitude more brilliant secondary beams of neutrons and positrons can be produced.