80 research outputs found

    In-beam fast-timing measurements in 103,105,107Cd

    Full text link
    Fast-timing measurements were performed recently in the region of the medium-mass 103,105,107Cd isotopes, produced in fusion evaporation reactions. Emitted gamma-rays were detected by eight HPGe and five LaBr3:Ce detectors working in coincidence. Results on new and re-evaluated half-lives are discussed within a systematic of transition rates. The 7/21+7/2_1^+ states in 103,105,107Cd are interpreted as arising from a single-particle excitation. The half-life analysis of the 11/2111/2_1^- states in 103,105,107Cd shows no change in the single-particle transition strength as a function of the neutron number

    Fast-timing measurements in 95,96Mo

    Full text link
    Half-lives of the 19/2+ and 21/2+ states in 95Mo and of the 8+ and 10+ states in 96Mo were measured. Matrix elements for yrast transitions in 95Mo and 96Mo are discussed.Comment: Proceedings of XIX International School on Nuclear Physics, Neutron Physics and Applications, Varna, Bulgaria, 2011, 5 pages, 6 figure

    The LAGUNA design study- towards giant liquid based underground detectors for neutrino physics and astrophysics and proton decay searches

    Get PDF
    The feasibility of a next generation neutrino observatory in Europe is being considered within the LAGUNA design study. To accommodate giant neutrino detectors and shield them from cosmic rays, a new very large underground infrastructure is required. Seven potential candidate sites in different parts of Europe and at several distances from CERN are being studied: Boulby (UK), Canfranc (Spain), Fr\'ejus (France/Italy), Pyh\"asalmi (Finland), Polkowice-Sieroszowice (Poland), Slanic (Romania) and Umbria (Italy). The design study aims at the comprehensive and coordinated technical assessment of each site, at a coherent cost estimation, and at a prioritization of the sites within the summer 2010.Comment: 5 pages, contribution to the Workshop "European Strategy for Future Neutrino Physics", CERN, Oct. 200

    The LBNO long-baseline oscillation sensitivities with two conventional neutrino beams at different baselines

    Get PDF
    The proposed Long Baseline Neutrino Observatory (LBNO) initially consists of 20\sim 20 kton liquid double phase TPC complemented by a magnetised iron calorimeter, to be installed at the Pyh\"asalmi mine, at a distance of 2300 km from CERN. The conventional neutrino beam is produced by 400 GeV protons accelerated at the SPS accelerator delivering 700 kW of power. The long baseline provides a unique opportunity to study neutrino flavour oscillations over their 1st and 2nd oscillation maxima exploring the L/EL/E behaviour, and distinguishing effects arising from δCP\delta_{CP} and matter. In this paper we show how this comprehensive physics case can be further enhanced and complemented if a neutrino beam produced at the Protvino IHEP accelerator complex, at a distance of 1160 km, and with modest power of 450 kW is aimed towards the same far detectors. We show that the coupling of two independent sub-MW conventional neutrino and antineutrino beams at different baselines from CERN and Protvino will allow to measure CP violation in the leptonic sector at a confidence level of at least 3σ3\sigma for 50\% of the true values of δCP\delta_{CP} with a 20 kton detector. With a far detector of 70 kton, the combination allows a 3σ3\sigma sensitivity for 75\% of the true values of δCP\delta_{CP} after 10 years of running. Running two independent neutrino beams, each at a power below 1 MW, is more within today's state of the art than the long-term operation of a new single high-energy multi-MW facility, which has several technical challenges and will likely require a learning curve.Comment: 21 pages, 12 figure

    Fast-timing lifetime measurements of excited states in Cu-67

    Get PDF
    The half-lives of the 9/2(+), 13/2(+), and 15/2(+) yrast states in the neutron-rich Cu-67 nucleus were determined by using the in-beam fast-timing technique. The experimentally deduced E3 transition strength for the decay of the 9/2(+) level to the 3/2(-) ground state indicates that the wave function of this level might contain a collective component arising from the coupling of the odd proton p(3/2) with the 3(-) state in Ni-66. Theoretical interpretations of the 9/2(+) state are presented within the particle-vibration weak-coupling scheme involving the unpaired proton and the 3(-) state from Ni-66 and within shell-model calculations with a Ni-56 core using the jj44b residual interaction. The shell model also accounts reasonably well for the other measured electromagnetic transition probabilities

    Comparação termohigrométrica de sub-altitude em área urbana e rural em São Carlos, Brasil, por meio de VANT/DRONE.

    Get PDF
    A Radiossondagem de sub-altitude tem como objetivo mensurar os dados climatológicos em vários níveis verticais da atmosfera por meio de um equipamento denominado radiossonda. Além do mais, é conhecido que os diferentes tipos de uso e ocupação do solo (urbano, industrial, rural, florestal) alteram o balanço de energia entre a superfície e a atmosfera. Dessa forma, o estudo proposto tem como objetivo analisar e comparar os valores de temperatura e umidade relativa do ar próximo a superfície (1,5m de altura) e em diferentes alturas (50m e 190m da superfície) em área urbana e rural no município de São Carlos, Brasil, no período noturno em episódios de inverno, por meio de termohigrômetros acoplados em um Veículo Aéreo Não-Tripulado (Vant/Drone) do tipo quadricóptero (quatro hélices). O voo na área urbana foi realizado no dia 13/07/2018 e na área rural no dia 26/07/2018 entre 19:30 e 20:30. Os resultados demonstraram que na área urbana em períodos noturnos a temperatura e umidade relativa do ar são maiores próxima a superfície em relação aos dados de sub-altitude. Já na área rural em períodos noturnos a temperatura do ar é menor e a umidade relativa do ar é maior próximo a superfície em comparação aos dados de sub-altitude

    New investigation of 83^{83}Zr and 85^{85}Zr beta decay

    No full text

    Description of the light barium isotopes in the interacting boson-fermion model

    No full text
    European construction raises at the great day, the theoretical faults of the traditional design of contemporary public sphere. In the light of investigation empirical, this text tries a conceptual definition of the three features characteristic of public space
    corecore