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Ground-state properties of spherical even-even nuclei $14\leq Z \leq 28$ and $N=18,20,22$ are described in the framework of Relativistic Hartree Bogoliubov (RHB) theory. The model uses the NL3 effective interaction in the mean-field Lagrangian, and describes pairing correlations by the pairing part of the finite range Gogny interaction D1S. Binding energies, two-proton separation energies, and proton $rms$ radii that result from fully self-consistent RHB solutions are compared with experimental data. The model predicts the location of the proton drip-line. The isospin dependence of the effective spin-orbit potential is discussed, as well as pairing properties that result from the finite range interaction in the $pp$ channel., Comment: 12 pages, RevTex, 10 p.s figures, submitted to Phys. Rev. C

The framework of relativistic energy density functional has been applied in description of excitation phenomena in nuclei close to the proton drip line. In particular, low‐lying dipole excitations have been studied using relativistic quasiparticle random phase approximation, based on effective Lagrangians with density dependent meson nucleon couplings. In the isovector dipole channel, the occurrence of pronounced low‐lying dipole peaks is predicted, corresponding to the proton pygmy dipole resonance. Since this exotic mode still awaits its experimental confirmation, systematic calculations have been conducted within a pool of neutron deficient nuclei, in order to identify the best possible candidates for measurements.

WOS: 000278933900003, The nuclides W-157 and Os-161 have been discovered ill reactions of Ni-58 ion beams with a Cd-106 target. The Os-161 alpha-decay energy and half-life were 6890 +/- 12 keV and 640 +/- 60 mu s. The daughter W-157 nuclei beta-decayed with a half-life of 275 +/- 40 ms, populating both low-lying alpha-decaying states in Ta-157, which is consistent with a 7/2(-) ground state in W-157. Fine structure observed in the alpha decay of Os-161 places the lowest excited state in W-157 with 1(pi) = 9/2(-) at 318 +/- 30 key. The branching ratio of 5.5(-2.2)(+3.1)% indicates that Os-161 also has a 7/2(-) ground state. Shell-model calculations analysing the effects of monopole shifts and a tensor force on the relative energies of 2f(7/2) and 1h(9/2) neutron states in N = 83 isotones are presented. (C) 2010 Elsevier B.V. All rights reserved., Jyvaskyla; United Kingdom Science and Technology Facilities Council; Swedish Natural Science Research Council; Academy of Finland [44875, 209430, 111965]; European Union [R113-CT-2004-506065, HPMT-CT-2001-00250]; Science and Technology Facilities Council [EP/C015266/1, EP/C015371/1, ST/G008671/1, ST/F012012/1, ST/J000108/1, EP/C543157/1, ST/G008620/1, ST/F012039/1], We thank the accelerator staff at Jyvaskyla for their excellent support and Paul Morrall from Daresbury Laboratory for making the targets. This work was supported by the United Kingdom Science and Technology Facilities Council; the Swedish Natural Science Research Council; the Academy of Finland through the Finnish Centre of Excellence Programme (project 44875 Nuclear and Condensed Matter Physics Programme at JYFL) and support for C.S. (contract 209430) and P.T.G. (contract 111965); the European Union Sixth Framework contract EURONS (R113-CT-2004-506065) and the European Union Marie Curie Programme (contract HPMT-CT-2001-00250).

8 pages, 5 figures.-- PACS nrs.: 21.10.Pc, 23.40.Hc, 27.50.+e., A total absorption spectrometer, dedicated to the study of very short-lived atomic species, has been built and installed at the CERN/ISOLDE mass separator. The beta decay of the neutron-deficient Kr-74 nucleus has been studied using this new device. The Gamow-Teller strength distribution has been observed over most of the Q(EC) window, and a total strength of 0.69(3) g(A)(2)/4pi has been measured for states with excitation energy below 3 MeV. Shape mixing in the Kr-74 ground state is inferred from a comparison of the experimental strength distribution with self-consistent, deformed, quasiparticle-random-phase-approximation calculations., This work has been partly supported by EPSRC(UK), by the IN2P3 /CNRS (France) and CICYT (Spain) under Contract Nos. PN98-1 and PN00-1, by the CICYT under Contract No. AEN99-1046-CO2-01/02, by the MCyT under Contract No. BFM2002-03562, and by the European Large Scale Facility Grant No. HPRI-CT-1999-00018. A. Algora is a post-doctoral research fellow under the Marie Curie Contract No. HPMF-CT-1999-00394. A. Jungclaus acknowledges financial support from the Deutsche Forschungsgemeinschaft (DFG) within the Heisenberg program.

The excitation of isospin and spin-isospin modes has been a topic of much interest in the last two decades because of their importance to various astrophysical phenomena next to the intrinsic interest in their microscopic structure. (p, n) and other (p,n)-type reactions, such as (He-3,t), at intermediate energies have been used to map spin-isospin-flip strength in the beta(-) direction. For the beta(+) direction the spin-isospin-flip strength can, in principle, be mapped with the (n,p) reaction at intermediate energies. However, the resolution that can be obtained with secondary neutron beams is hardly useful to map accurately this strength. Better reactions could be (d, He-2) and (t,He-3) reactions at intermediate energies. Recently, at KVI a primary triton beam has been accelerated to energies of about 45 MeV/u. It is planned to use this beam to study isospin excitations in 'neutron-rich' nuclei. Furthermore, an unprecedented high resolution of 150 keV has been achieved with the (d,2He) reaction, which is a reaction of essentially pure spin- and isospin-flip character. This allows to map the spin-isospin strength and study its microscopic and multipole structure. Recent experimental results axe discussed.

The excitation of isospin and spin-isospin modes has been a topic of much interest in the last two decades because of their importance to various astrophysical phenomena next to the intrinsic interest in their microscopic structure. (p, n) and other (p,n)-type reactions, such as (He-3,t), at intermediate energies have been used to map spin-isospin-flip strength in the beta(-) direction. For the beta(+) direction the spin-isospin-flip strength can, in principle, be mapped with the (n,p) reaction at intermediate energies. However, the resolution that can be obtained with secondary neutron beams is hardly useful to map accurately this strength. Better reactions could be (d, He-2) and (t,He-3) reactions at intermediate energies. Recently, at KVI a primary triton beam has been accelerated to energies of about 45 MeV/u. It is planned to use this beam to study isospin excitations in 'neutron-rich' nuclei. Furthermore, an unprecedented high resolution of 150 keV has been achieved with the (d,2He) reaction, which is a reaction of essentially pure spin- and isospin-flip character. This allows to map the spin-isospin strength and study its microscopic and multipole structure. Recent experimental results axe discussed.

The excitation of isospin and spin-isospin modes has been a topic of much interest in the last two decades because of their importance to various astrophysical phenomena next to the intrinsic interest in their microscopic structure. (p, n) and other (p,n)-type reactions, such as (He-3,t), at intermediate energies have been used to map spin-isospin-flip strength in the beta(-) direction. For the beta(+) direction the spin-isospin-flip strength can, in principle, be mapped with the (n,p) reaction at intermediate energies. However, the resolution that can be obtained with secondary neutron beams is hardly useful to map accurately this strength. Better reactions could be (d, He-2) and (t,He-3) reactions at intermediate energies. Recently, at KVI a primary triton beam has been accelerated to energies of about 45 MeV/u. It is planned to use this beam to study isospin excitations in 'neutron-rich' nuclei. Furthermore, an unprecedented high resolution of 150 keV has been achieved with the (d,2He) reaction, which is a reaction of essentially pure spin- and isospin-flip character. This allows to map the spin-isospin strength and study its microscopic and multipole structure. Recent experimental results axe discussed.

For nuclei far from stability the Relativistic Hartree-Bogoliubov model provides a unified and self-consistent description of mean-field and pairing correlations. The RHB maps of the proton drip-line for odd-Z nuclei in the regions $31 \leq Z \leq 49$ and $73 \leq Z \leq 91$, including the results for the ground-state proton emitters, are compared with recent experimental data.

The Relativistic Hartree Bogoliubov (RHB) model is applied in the description of ground-state properties of proton-rich odd-Z nuclei in the region 31 less than or equal to Z less than or equal to 49. The model predicts the location of the proton drip-line, the ground-state quadrupole deformations and one-proton separation energies at and beyond the drip-line, the deformed single-particle orbitals occupied by the odd valence proton, and the corresponding spectroscopic factors.