No abstract available

[en] The experimental techniques used for decay studies of the very neutron-deficient isotopes such as ²⁰Mg, ³⁶Ca, ³⁷Ca, ⁹⁴Ag, ¹⁰⁰In, ¹⁰¹Sn and ¹¹⁴Ba are discussed. Particular emphasis is put on the discussion of the projectile fragment separator online to the accelerator SIS and the isotope separator online to the accelerator UNILAC

[en] This work deals with the nuclear radiations. After having recalled some general notions of chemistry and physics (more particularly on chemical elements, molecules, atoms, photons, energy unities, restricted theory of relativity, structure of atoms, quantum mechanics, binding energy, protons, neutrons, isotopes and magic numbers), the author describes the different sources of radiations : radioactivity, nuclear radii, alpha beta and gamma radiations, cosmic radiations, X radiations, synchrotron radiations, nuclear reactions and reactors. The next parts are devoted to the properties, the penetration in matter and the detection of the different radiations previously evoked. Then is given the biological effects of nuclear radiations and the radiation protection measures taken in France. (O.L.). 16 refs., 43 figs., 5 tabs

[en] The ground state of proton-unbound ¹¹N is thought to consist of a broad s-wave state, but this has not been experimentally verified. Due to recent interest in this system, the authors have studied ¹¹N using the neutron-stripping reaction ⁹Be(¹²N,¹¹N) at E(¹²N)= 40 MeV/A. The radioactive ¹²N beam was produced by projectile fragmentation of 80 MeV/A ¹⁶O using the NSCL A1200 fragment separator. Coincident proton and ¹⁰C particles from the inflight decay of ¹¹N were detected and the decay energy of the composite system was determined from the measured energies and angles. Results from this study and model calculations will be present

[en] A search for the ¹²C decay of ¹¹⁴Ba produced in the ⁵⁸Ni(⁵⁸Ni,2n) reaction was performed by using polycarbonate track detectors. Assuming the total half-life of ¹¹⁴Ba to be > or ∼0.1 s, the lower limit T_c≥10³ s for the partial ¹²C-decay half-life was established. (orig.)

[en] The radionuclide ⁵⁴V was produced by the fast neutron (n, p) reaction on a 50 mg sample of 90% isotopically enriched ⁵⁴Cr. The 14.6 MeV neutrons, the yield of which was 1.5 ∼ 2.0 x 10⁹ neutrons/s, were generated through the T(d, n) reaction using the 200 kV Cockcroft-Walton accelerator. The average half life of ⁵⁴V is 46.4 +- 0.6 sec. Two new γ-rays with energies of about 4.56 and 5.0 MeV were discovered

[en] Short communication

[en] The authors report that the new heavy neutron-rich isotope ²³⁹Pa has been observed for the first time and its half life has been determined to be 106 +- 30 min

[en] In recent years, the LISOL group collected an extensive systematics on intruder states in the Pb region. In this contribution, we will give a summary of the results obtained on E0 lifetimes, Q_α and energy systematics of 0₂⁺ intruder states in ^190'192'194 Pb. (Author)

[en] The finite-temperature Hartree-Fock-Bogoliubov cranking equation is solved for ¹⁴⁸Sm. The phase diagram contains three shape transition lines. For certain rotational frequencies, there is oblate noncollective rotation at low temperatures, prolate and triaxial collective rotation at intermediate temperatures, and oblate noncollective rotation at higher temperatures. A new oblate region at low T and ω is caused by the pairing interaction