No abstract available

No abstract available

[en] The half-life of the alpha emitter ¹⁴⁸Gd isotope has been measured by following the decay curve of a low activity ¹⁴⁸Gd- ²⁴¹Am mixed source. Based on two years of decay the preliminary result is T_((1)/(2)) 70.9 ± 1.0 y

[en] Better accuracy of the ¹⁴⁸Gd half-life improves our knowledge on the nucleosynthesis of the p-elements. In order to determine the half-life the alpha decay of a weak ¹⁴⁸Gd/²⁴¹Am mixed source was used in an activation technique, with a compact dedicated system. The source stability as well as the electronics can be monitored by following the yield of the long lived ²⁴¹ Am. The preliminary result is T_1/2 = 65 ± 7 y. (R.P.)

[en] The 16-channel preamplifier model CPA16 from Multi Channel Systems was studied. The CPA16 preamplifier/amplifier module is a candidate to be used as the preamplifiers and amplifiers for the focal plane detectors of the Mass Analyzer of Super Heavy Atoms (MASHA). The equipment used to test the CPA16, the results of testing the CPA16 with a pulser, a mixed ²²⁹Th/¹⁴⁸Gd source and a ²⁵²Cf source, and a summary of the results will be presented

[en] Three parameters formula for the transition energies is used to analyse the superdeformed rotational bands (SDRB's) in Gadolinium nuclei of A ∼150 A mass region. The formula connects directly the unknown spin and the energy of the level. For each SD band the model parameters are determined by using a computer simulated search program to reproduce the observed gamma transition energies. The calculated level spins, transition energies, rotational frequencies, Kinematic and dynamic moments of inertia are examined for seven SDRB's in Gadolinium nuclei. Namely the SDRB's are ¹⁴⁸Gd (SD-1,SD-6) and ¹⁵⁰Gd (SD-1, SD-5, SD-8, SD-9, SD-10).

[en] Results of an (α,5n) in-beam study of ¹⁴⁸Gd are presented. Spins and parities were determined. Shell-model configurations are indicated and discussed. 1 figure

[en] In this paper, a global systematics of the spins of nuclear isomers are presented. As pointed out in the accompanying paper, isomers have been defined as those excited states whose half-lives are equal to or, more than 1 ns

[en] This work presents the determination of the ¹⁴⁸Gd and ¹⁵⁴Dy content in Pb targets irradiated by 220-2600 MeV protons. It includes the chemical separation of lanthanides, followed by the preparation of proper samples, by molecular plating technique, for alpha-spectrometry measurements. The experimental cross section results were compared with theoretical predictions, calculated with the INCL++-ABLA07 code. The comparisons showed a satisfactory agreement for ¹⁴⁸Gd (less than within a factor two), while measured ¹⁵⁴Dy cross sections are higher than the theoretical values. (authors)

[en] The energy level schemes of Gd and Tb isotopes have been investigated using NORDBALL γ detector. The two-phonon, octupole 12⁺ state in ¹⁴⁸Gd has been established from double E3 deexcitation cascade. 9 refs, 15 figs