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After analysis of 5797 h of data from the detector NEMO3, new limits on neutrinoless double beta decay of 100Mo(T1/2 > 3.1 × 1023 y, 90% CL) and 82Se(T1/2 > 1.4 × 1023 y, 90% CL) have been obtained. The corresponding limits on the effective majorana neutrino mass are: 〈mν〉 < (0.8–1.2) eV and 〈mν〉 < (1.5–3.1) eV, respectively. Also the limits on double-beta decay with Majoron emission are: T1/2 > 1.4 × 1022 y (90% CL) for 100Mo and T1/2 > 1.2 × 1022 y (90% CL) for 82Se. Corresponding bounds on the Majoron-neutrino coupling constant are 〈gee〉 < (0.5–0.9) × 10– 4 and <(0.7–1.6) × 10– 4. Two-neutrino 2β-decay half-lives have been measured with a high accuracy, T1/2100Mo = [7.68 ± 0.02(stat) ± 0.54(syst)] × 1018 y and T1/282Se = [10.3 ± 0.3(stat) ± 0.7(syst)] × 1019 y. © 2004 MAIK “Nauka / Interperiodica”. [ABSTRACT FROM AUTHOR]

One-proton and one-neutron stripping reactions induced by a 793 MeVO beam bombarding aPb target have been studied at the GANIL facility using a high resolution energy loss magnetic spectrometer. The reactions are governed by two semi classical selection rules which are naturally contained in the one-step EFR-DWBA formalism. Relative intensities of the populated states are well reproduced by this formalism which, on the other hand, fails to predict correctly absolute cross section values. [ABSTRACT FROM AUTHOR]