Orateur
Description
I will explain that the systems where a beta-decaying atom is attached to a solid-state substrate are capable of making a break-through discovery for cosmology — detecting the so-called Relic Neutrino Background (C$\nu$B).
To collect enough statistics and achieve the superb energy measurement resolution required for this ambitious goal, a large-scale experiment involving a macroscopic number of beta-decayers must be eventually built.
The physics of the interaction between the beta-decayer and
the substrate is quite non-trivial and it imposes fundamental limitations on the experiment. I will review several effects that appear in such a system and describe some of the non-trivial theoretical and experimental problems that have to be solved
before a full-scale CnuB detector can be built.
