X. Garrido

Geomagnetic origin of the radio emission from cosmic ray induced air showers observed by CODALEMA

The new setup of the CODALEMA experiment installed at the Radio Observatory in Nancay, France, is described. It includes broadband active dipole antennas and an extended and upgraded particle detector array. The latter gives access to the air shower energy, allowing us to compute the efficiency of the radio array as a function of energy. We also observe a large asymmetry in counting rates between showers coming from the North and the South in spite of the symmetry of the detector. The observed asymmetry can be interpreted as a signature of the geomagnetic origin of the air shower radio emission. A simple linear dependence of the electric field with respect to ∧ is used which reproduces the angular dependencies of the number of radio events and their electric polarity.

Measurement of the Double Beta Decay Half-life of 130Te with the NEMO-3 Detector

We report results from the NEMO-3 experiment based on an exposure of 1275 days with 661 g of (130)Te in the form of enriched and natural tellurium foils. The ββ decay rate of (130)Te is found to be greater than zero with a significance of 7.7 standard deviations and the half-life is measured to be T(½)(2ν) = [7.0 ± 0.9(stat) ± 1.1(syst)] × 10(20) yr. This represents the most precise measurement of this half-life yet published and the first real-time observation of this decay.

Measurement of the Double-Beta Decay Half-Life and Search for the Neutrinoless Double-Beta Decay of

The NEMO-3 experiment at the Modane Underground Laboratory has investigated the double-

^{48}{\rm Ca}

\beta

with the NEMO-3 Detector

decay of

Measurement of the 2νββ decay half-life of 150Nd and a search for 0νββ decay processes with the full exposure from the NEMO-3 detector

^{48}{\rm Ca}

Measurement of the ββ decay half-life of 130Te with the NEMO-3 detector.

. Using

Search for neutrinoless double-beta decay ofMo100with the NEMO-3 detector

5.25

Measurement of theββDecay Half-Life ofTe130with the NEMO-3 Detector

yr of data recorded with a

Measurement of the ββ decay half-life of te130 with the NEMO-3 detector

6.99\,{\rm g}