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D.l. Balabanski - One of the best experts on this subject based on the ideXlab platform.

  • g factor of the 99 zr 7 2 isomer monopole Evolution in the shape coexisting region
    Physical Review Letters, 2020
    Co-Authors: F. Boulay, G.s. Simpson, Y. Ichikawa, S. Kisyov, D. Bucurescu, A. Takamine, D.s. Ahn, K. Asahi, H. Baba, D.l. Balabanski
    Abstract:

    The gyromagnetic factor of the low-lying E=251.96(9)  keV isomeric state of the nucleus ^{99}Zr was measured using the time-dependent perturbed angular distribution technique. This level is assigned a spin and parity of J^{π}=7/2^{+}, with a half-life of T_{1/2}=336(5)  ns. The isomer was produced and spin aligned via the abrasion-fission of a ^{238}U primary beam at RIKEN RIBF. A magnetic moment |μ|=2.31(14)μ_{N} was deduced showing that this isomer is not single Particle in nature. A comparison of the experimental values with interacting boson-fermion model IBFM-1 results shows that this state is strongly mixed with a main νd_{5/2} composition. Furthermore, it was found that monopole single-Particle Evolution changes significantly with the appearance of collective modes, likely due to type-II shell Evolution.

  • $g$ Factor of the $^{99}\mathrm{Zr}$ ($7/{2}^{+}$) Isomer: Monopole Evolution in the Shape-Coexisting Region
    Phys.Rev.Lett., 2020
    Co-Authors: F. Boulay, G.s. Simpson, Y. Ichikawa, S. Kisyov, D. Bucurescu, A. Takamine, D.s. Ahn, K. Asahi, H. Baba, D.l. Balabanski
    Abstract:

    The gyromagnetic factor of the low-lying E=251.96(9) keV isomeric state of the nucleus Zr99 was measured using the time-dependent perturbed angular distribution technique. This level is assigned a spin and parity of Jπ=7/2+, with a half-life of T1/2=336(5) ns. The isomer was produced and spin aligned via the abrasion-fission of a U238 primary beam at RIKEN RIBF. A magnetic moment |μ|=2.31(14)μN was deduced showing that this isomer is not single Particle in nature. A comparison of the experimental values with interacting boson-fermion model IBFM-1 results shows that this state is strongly mixed with a main νd5/2 composition. Furthermore, it was found that monopole single-Particle Evolution changes significantly with the appearance of collective modes, likely due to type-II shell Evolution.

L. Woste - One of the best experts on this subject based on the ideXlab platform.

  • Trajectory Studies of Polar Stratospheric Cloud Lidar Observations at Sodankylä (Finland) During SESAME: Comparison with Box Model Results of Particle Evolution
    Journal of Atmospheric Chemistry, 1999
    Co-Authors: V. Rizi, G. Redaelli, G. Visconti, F. Masci, C. Wedekind, B. Stein, F. Immler, B. Mielke, P. Rairoux, L. Woste
    Abstract:

    Polar stratospheric clouds (PSC) were observed with the multi-wavelength lidar of the MOANA project (Modelling and Observations of Aerosols in the Northern Atmosphere) during SESAME (Second European Stratospheric Arctic and Mid-latitude Experiment). The physical state, liquid or solid, of the cloud Particles can be inferred from the lidar data. Using isentropic back-trajectories to obtain the thermal history of the sampled air masses, it is possible to reconcile most of the observations with current ideas on PSC formation and Evolution. When the cloud Particles were identified as liquid, changes in the size distribution of the droplets along the trajectory were calculated using a micro-physical box model. Backscatter ratios calculated from the size distributions are in broad agreement with the lidar data, giving confidence in current understanding of the Evolution of ternary solution (H2SO4, HNO3 and H2O) droplets. Results from two soundings are shown which bear on the problem of the formation of solid Particles. In the first, solid Particles were detected. The air mass had cooled to the frost point 12 hours earlier. In the second no solid Particles were detected although the air temperature was below the nitric acid trihydrate existence point, and had decreased by 12K in the previous 14 hours.

F. Boulay - One of the best experts on this subject based on the ideXlab platform.

  • g factor of the 99 zr 7 2 isomer monopole Evolution in the shape coexisting region
    Physical Review Letters, 2020
    Co-Authors: F. Boulay, G.s. Simpson, Y. Ichikawa, S. Kisyov, D. Bucurescu, A. Takamine, D.s. Ahn, K. Asahi, H. Baba, D.l. Balabanski
    Abstract:

    The gyromagnetic factor of the low-lying E=251.96(9)  keV isomeric state of the nucleus ^{99}Zr was measured using the time-dependent perturbed angular distribution technique. This level is assigned a spin and parity of J^{π}=7/2^{+}, with a half-life of T_{1/2}=336(5)  ns. The isomer was produced and spin aligned via the abrasion-fission of a ^{238}U primary beam at RIKEN RIBF. A magnetic moment |μ|=2.31(14)μ_{N} was deduced showing that this isomer is not single Particle in nature. A comparison of the experimental values with interacting boson-fermion model IBFM-1 results shows that this state is strongly mixed with a main νd_{5/2} composition. Furthermore, it was found that monopole single-Particle Evolution changes significantly with the appearance of collective modes, likely due to type-II shell Evolution.

  • $g$ Factor of the $^{99}\mathrm{Zr}$ ($7/{2}^{+}$) Isomer: Monopole Evolution in the Shape-Coexisting Region
    Phys.Rev.Lett., 2020
    Co-Authors: F. Boulay, G.s. Simpson, Y. Ichikawa, S. Kisyov, D. Bucurescu, A. Takamine, D.s. Ahn, K. Asahi, H. Baba, D.l. Balabanski
    Abstract:

    The gyromagnetic factor of the low-lying E=251.96(9) keV isomeric state of the nucleus Zr99 was measured using the time-dependent perturbed angular distribution technique. This level is assigned a spin and parity of Jπ=7/2+, with a half-life of T1/2=336(5) ns. The isomer was produced and spin aligned via the abrasion-fission of a U238 primary beam at RIKEN RIBF. A magnetic moment |μ|=2.31(14)μN was deduced showing that this isomer is not single Particle in nature. A comparison of the experimental values with interacting boson-fermion model IBFM-1 results shows that this state is strongly mixed with a main νd5/2 composition. Furthermore, it was found that monopole single-Particle Evolution changes significantly with the appearance of collective modes, likely due to type-II shell Evolution.

V. Rizi - One of the best experts on this subject based on the ideXlab platform.

  • Trajectory Studies of Polar Stratospheric Cloud Lidar Observations at Sodankylä (Finland) During SESAME: Comparison with Box Model Results of Particle Evolution
    Journal of Atmospheric Chemistry, 1999
    Co-Authors: V. Rizi, G. Redaelli, G. Visconti, F. Masci, C. Wedekind, B. Stein, F. Immler, B. Mielke, P. Rairoux, L. Woste
    Abstract:

    Polar stratospheric clouds (PSC) were observed with the multi-wavelength lidar of the MOANA project (Modelling and Observations of Aerosols in the Northern Atmosphere) during SESAME (Second European Stratospheric Arctic and Mid-latitude Experiment). The physical state, liquid or solid, of the cloud Particles can be inferred from the lidar data. Using isentropic back-trajectories to obtain the thermal history of the sampled air masses, it is possible to reconcile most of the observations with current ideas on PSC formation and Evolution. When the cloud Particles were identified as liquid, changes in the size distribution of the droplets along the trajectory were calculated using a micro-physical box model. Backscatter ratios calculated from the size distributions are in broad agreement with the lidar data, giving confidence in current understanding of the Evolution of ternary solution (H2SO4, HNO3 and H2O) droplets. Results from two soundings are shown which bear on the problem of the formation of solid Particles. In the first, solid Particles were detected. The air mass had cooled to the frost point 12 hours earlier. In the second no solid Particles were detected although the air temperature was below the nitric acid trihydrate existence point, and had decreased by 12K in the previous 14 hours.

Y. Ichikawa - One of the best experts on this subject based on the ideXlab platform.

  • g factor of the 99 zr 7 2 isomer monopole Evolution in the shape coexisting region
    Physical Review Letters, 2020
    Co-Authors: F. Boulay, G.s. Simpson, Y. Ichikawa, S. Kisyov, D. Bucurescu, A. Takamine, D.s. Ahn, K. Asahi, H. Baba, D.l. Balabanski
    Abstract:

    The gyromagnetic factor of the low-lying E=251.96(9)  keV isomeric state of the nucleus ^{99}Zr was measured using the time-dependent perturbed angular distribution technique. This level is assigned a spin and parity of J^{π}=7/2^{+}, with a half-life of T_{1/2}=336(5)  ns. The isomer was produced and spin aligned via the abrasion-fission of a ^{238}U primary beam at RIKEN RIBF. A magnetic moment |μ|=2.31(14)μ_{N} was deduced showing that this isomer is not single Particle in nature. A comparison of the experimental values with interacting boson-fermion model IBFM-1 results shows that this state is strongly mixed with a main νd_{5/2} composition. Furthermore, it was found that monopole single-Particle Evolution changes significantly with the appearance of collective modes, likely due to type-II shell Evolution.

  • $g$ Factor of the $^{99}\mathrm{Zr}$ ($7/{2}^{+}$) Isomer: Monopole Evolution in the Shape-Coexisting Region
    Phys.Rev.Lett., 2020
    Co-Authors: F. Boulay, G.s. Simpson, Y. Ichikawa, S. Kisyov, D. Bucurescu, A. Takamine, D.s. Ahn, K. Asahi, H. Baba, D.l. Balabanski
    Abstract:

    The gyromagnetic factor of the low-lying E=251.96(9) keV isomeric state of the nucleus Zr99 was measured using the time-dependent perturbed angular distribution technique. This level is assigned a spin and parity of Jπ=7/2+, with a half-life of T1/2=336(5) ns. The isomer was produced and spin aligned via the abrasion-fission of a U238 primary beam at RIKEN RIBF. A magnetic moment |μ|=2.31(14)μN was deduced showing that this isomer is not single Particle in nature. A comparison of the experimental values with interacting boson-fermion model IBFM-1 results shows that this state is strongly mixed with a main νd5/2 composition. Furthermore, it was found that monopole single-Particle Evolution changes significantly with the appearance of collective modes, likely due to type-II shell Evolution.