S-35 Beta Irradiation of a Tin Strip in a State of Superconducting Geometrical Metastability

We report the first energy loss spectrum obtained with a geometrically metastable type I superconducting tin strip irradiated by the beta-emission of S-35. (Nucl. Instr. Meth. A, in press)Comment: Compressed PostScript (filename.ps.Z), 9 pages, 2 figure

Planck scale effects in neutrino physics

We study the phenomenology and cosmology of the Majoron (flavon) models of three active and one inert neutrino paying special attention to the possible (almost) conserved generalization of the Zeldovich-Konopinski-Mahmoud lepton charge. Using Planck scale physics effects which provide the breaking of the lepton charge, we show how in this picture one can incorporate the solutions to some of the central issues in neutrino physics such as the solar and atmospheric neutrino puzzles, dark matter and a 17 keV neutrino. These gravitational effects induce tiny Majorana mass terms for neutrinos and considerable masses for flavons. The cosmological demand for the sufficiently fast decay of flavons implies a lower limit on the electron neutrino mass in the range of 0.1-1 eV.Comment: 24 pages, 1 figure (not included but available upon request), LaTex, IC/92/196, SISSA-140/92/EP, LMU-09/9

ORGANIC SHIFTERS FOR COMPOSITE SCINTILLATORS

In this work luminescence properties of different organic shifters are studied. Absorption, photoluminescence and excitation spectra are presented. Photoluminescent spectrum contain emission band with maximum at 436 nm. This peak most effectively excited by light with 420 nm and 310 nm wavelengths

Neutrino properties

Neutrinos have reached the status of being probes to study the structure of other systems. We have not, however, definite answers to the questions associated with its intrinsic properties. The selected topics are organized according to a 'Decamerous', which covers both aspects of neutrino physics. One comes to the conclusion that we are entering an exciting period in this field, with experiments able to establish new phenomena and/or put better limits to some intrinsic properties