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Stored and Cooled Ions Division
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Fax: +49 6221 516-852
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Max Planck Institute for Nuclear Physics
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Mandatory master seminar, SS11

Physics with stored and cooled ions

Seminar room Blaum (MPI Kphys / kHS)
fortnightly, Wed. 15.30 - 17.30

Seminar program

Date: 20.04.2011
Speaker: Christoph Diehl
Title: First mass measurements with the MPIK/UW-PTMS


Date: 04.05.2011
Speaker: Bertram Blank / Universität Bordeaux
Title: Studies with proton-rich nuclei: From super-allowed beta decay to two-proton radioactivity


Date: 18.05.2011
no talk!


Date: 01.06.2011
Speaker: Felix Berg
Title: The CSR Injection Beamlines


Date: 15.06.2011
Speaker: Holger Kreckel
Title: Nuclear spin of interstellar H3+ and H2


Date: 29.06.2011
Speaker: Sayyora Artikova
Title: Beam dynamics studies and deceleration experiments with stored ion beam


Date: 13.07.2011
Speaker: Michael Kamp-Froese
Title: Advantages of ion bunching in a cryogenic EIBT


Date: 21.07.2011, please note change of date!
Speaker: Fedor Simkovic, Comeniu University, Bratislava
Title: Massive neutrinos in nuclear processes


The properties of the neutrinos have been the most important issue in particle physics, astrophysics and cosmology. More than 60 years after discovery of neutrinos we do not know their basisproperties, in particular absolute mass, CP properties, magnetic moment, nature (Dirac or Majorana), statistical properties, number of massive neutrinos etc. Neutrinos are elementary neutralparticles and participate in the weak nuclear processes. The measurement of the electron spectrumin the sigle \beta-decay of tritium and 187Re is discussed in the context of the KATRIN and MAREexperiments looking for an absolute mass of neutrinos. A possibility to detect cosmological relicneutrinos in these experiments is also addressed. After neutrino oscillations discovery, search forneutrinoless double beta decay (0\nu\beta\beta-decay) represents the new frontiers of neutrino physics, allowing in principle to fix the neutrino mass scale, the neutrino nature (the Dirac or Majorana particles)and possible CP violation effects. Many next generation 0\nu\beta\beta-decay experiments are in preparation or under consideration. In this presentation the development in the field of nuclear doublebeta decay is reviewed. A connection of the 0\nu\beta\beta-decay to neutrino oscillations and other leptonnumber violating processes is established. The light and sterile neutrino exchange mechanisms aswell as R-parity breaking mechanisms of the 0\nu\beta\beta-decay are analyzed. The problem of the reliabledetermination of the 0\nu\beta\beta-decay nuclear matrix elements is addressed. The possibility of bosonneutrino and partially boson neutrino is studied in light of the 2\nu\beta\beta-decay data. A new possibilityfor study of lepton number non-conservation is proposed, namely oscillations plus deexcitations ofneutral atoms. A phenomenological analysis of this process lead to a resonant enhancement of theneutrinoless double electron capture that has a Breit-Wigner form. Finally, the perspective of thefield of the single \beta and the double \beta-decays in the context of massive neutrinos is outlined.