AP-Seminare

What we can learn from traces of radionuclides on: the Pauli principle, Hiroshima and Supernovae

by Faestermann Thomas (TU München)

Europe/Berlin
SB3 2.283 (Atomic Physics Seminar Room)

SB3 2.283

Atomic Physics Seminar Room

Description
Accelerator mass spectrometry (AMS) is a very versatile tool to attack interdisciplinary problems. I will try to demonstrate this with experiments carried out at the Munich tandem accelerator. The first example is a test whether small violations of the Pauli exclusion principle are detectable. The second is a retrospective quantification of the fluence of neutrons from the atomic bomb in Hiroshima, both for fast and for thermal neutrons. This has relevance for the dose dependence of radiation induced cancer. The third point is the detection of Supernova (SN) produced radionuclides in the Solar system, on Earth and on the Moon. Apparent SN activity close to the sun about 2.2Ma ago is postulated from an 60Fe surplus in various marine and Lunar reservoirs. The rarity of 244Pu in marine reservoirs indicates a different origin of the r-process than ordinary core-collapse SNe.