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NSR database version of April 26, 2024.

Search: Author = K.Steffensen

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2016MA40      Eur.Phys.J. A 52, 172 (2016)

H.Mach, A.Lindroth, E.Ruchowska, J.Kvasil, B.Fogelberg, K.Gulda, A.J.Aas, M.J.G.Borge, I.S.Grant, E.Hagebo, W.Kurcewicz, T.Martinez, B.Rubio, J.F.Smith, K.Steffensen, J.L.Tain, O.Tengblad, T.F.Thorsteinsen

On the enhanced E1 transitions in the K = 3/2 parity doublet band in ²²³Ra

RADIOACTIVITY ²²³Fr(β^-)[from ²²³Rn]; measured β-decay of (3/2)^- and (5/2)^- states (50 and 80 keV) Eγ, Iγ(t) using BaF2 crystal for timing and two Ge, Eβ, Iβ(t) using ΔE NE111A, βγ-coin; deduced time-delayed βγ(t) spectrum, T_1/2, B(E1), B(E2), B(M1) for K=3/2 band states below 250 keV, intrinsic electric dipole moment D₀; calculated T_1/2, γ transition probabilities, B(E1), B(E2), B(M1), average electric dipole moment for ^223,224Ra (and compared with available data for Ra isotopes), quadrupole and octupole vibration energies in ^222,224Ra, structure of intrinsic states.

doi: 10.1140/epja/i2016-16172-4
Citations: PlumX Metrics
Data from this article have been entered in the XUNDL database. For more information, click here.

1997KU20      Nucl.Phys. A621, 827 (1997)

W.Kurcewicz, I.S.Grant, K.Gulda, A.J.Aas, J.Billowes, M.J.G.Borge, D.G.Burke, P.A.Butler, J.F.C.Cocks, B.Fogelberg, S.J.Freeman, G.D.Jones, E.Hagebo, P.Hoff, J.Honsi, A.Lindroth, G.Lovhoiden, H.Mach, T.Martinez, R.A.Naumann, K.Nybo, G.Nyman, H.Ravn, B.Rubio, J.Simpson, A.G.Smith, J.F.Smith, K.Steffensen, J.L.Tain, O.Tengblad, T.F.Thorsteinsen, and the ISOLDE Collaboration

The Nuclear Structure of ²²⁷Fr

RADIOACTIVITY ²²⁷Rn(β^-) [from ²³²Th(p, n5p), E=1 GeV]; measured Eγ, Iγ, I(ce), T_1/2, βγγ(t), γγ-coin. ²²⁷Fr deduced levels, J, π, ICC, γ-multipolarity, rotational bands, B(λ). Ge, Si(Li), BGO, plastic, BaF₂ detectors, mini-orange spectrometer.

doi: 10.1016/S0375-9474(97)00190-5
Citations: PlumX Metrics

1996AA01      Nucl.Phys. A611, 281 (1996)

A.J.Aas, H.Mach, M.J.G.Borge, B.Fogelberg, I.S.Grant, K.Gulda, E.Hagebo, W.Kurcewicz, J.Kvasil, A.Lindroth, T.Martinez, D.Nosek, B.Rubio, J.F.Smith, K.Steffensen, J.L.Tain, O.Tengblad, T.F.Thorsteinsen, and the ISOLDE Collaboration

Enhanced and Quenched B(E1) Transition Rates between Parity Doublet Bands in ²²⁷Ra

RADIOACTIVITY ²²⁷Fr(β^-); measured βγγ(t). ²²⁷Ra deduced levels, J, π, T_1/2, K, B(λ), band structure. Quasiparticle-plus-phonon model, Coriolis coupling.

doi: 10.1016/S0375-9474(96)00312-0
Citations: PlumX Metrics

1994BA50      Phys.Rev. C50, 1180 (1994)

P.Baumann, M.Bounajma, A.Huck, G.Klotz, A.Knipper, G.Walter, G.Marguier, C.Richard-Serre, H.Ravn, E.Hagebo, P.Hoff, K.Steffensen

Beta Decay Properties of ^67,68Se and the Astrophysical rp-Process Path

RADIOACTIVITY ^67,68Se(EC), (β⁺); measured T_1/2, βγ-, γγ-coin, Iβ, Eγ, Iγ; deduced log ft, rp-process path implications. ^68,67As levels deduced, J, π.

doi: 10.1103/PhysRevC.50.1180
Citations: PlumX Metrics

1992ED01      Nucl.Instrum.Methods Phys.Res. B62, 535 (1992)

R.Eder, H.Grawe, E.Hagebo, P.Hoff, E.Kugler, H.L.Ravn, K.Steffensen

The Production Yields of Radioactive Ion-Beams from Fluorinated Target at the ISOLDE On-Line Mass Separator

NUCLEAR REACTIONS Ta, W, Ti, ⁹³Nb(p, X), E=600 MeV; measured production yields of radioactive beams from Ca-Hf. Fluorinated targets, on-line mass separator.

doi: 10.1016/0168-583X(92)95387-7
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO0762.

1992GR09      Z.Phys. A341, 247 (1992)

H.Grawe, P.Hoff, J.P.Omtvedt, K.Steffensen, R.Eder, H.Haas, H.Ravn, and the ISOLDE Collaboration

Study of the β⁺/EC Decay of the Neutron Deficient Nuclei ^76,78Sr and ⁷⁹Y

RADIOACTIVITY ^76,78Sr, ⁷⁹Y(β⁺)(EC); measured Eγ, Iγ, decay curves; deduced T_1/2, decay schemes. ⁷⁸Rb deduced transitions. Sources from ISOLDE mass separator.

1992HA42      Nucl.Instrum.Methods Phys.Res. B70, 165 (1992)

E.Hagebo, P.Hoff, O.C.Jonsson, E.Kugler, J.P.Omtvedt, H.L.Ravn, K.Steffensen

New Production Systems at ISOLDE

NUCLEAR REACTIONS Pt(³He, xnyp), E not given; Sn(³He, xnyp), E=910 MeV; measured production yields for Au, Hg, Cd isotopes. Pt/graphite, Sn/graphite targets. U(p, X), E=600 MeV; measured production yields for Ne, Na, Mg, Al, Mn, Cu, Zn, Ga, Ge, As, Ag, Cd, In, Sn, Sb, Te, Hg, Tl, Pb, Bi, Po isotopes. Uranium carbide with hot plasma ion source, data on Ta, Nb foil targets with W surface ionizer and CF₄ leak also discussed.

doi: 10.1016/0168-583X(92)95927-J
Citations: PlumX Metrics

1989BU09      Z.Phys. A333, 131 (1989)

D.G.Burke, H.Folger, H.Gabelmann, E.Hagebo, P.Hill, P.Hoff, O.Jonsson, N.Kaffrell, W.Kurcewicz, G.Lovhoiden, K.Nybo, G.Nyman, H.Ravn, K.Riisager, J.Rogowski, K.Steffensen, T.F.Thorsteinsen, and the ISOLDE Collaboration

New Neutron-Rich Isotopes of Astatine and Bismuth

RADIOACTIVITY ^{218,219,220,221,222,223}At [from ²³²Th(p, X), E=600 MeV]; measured βγ-coin, β-activity, K X-ray spectra; deduced T_1/2. ²¹⁶Bi [from ²²⁰At(α-decay)]; measured α-spectra; deduced T_1/2, Qα, α-branching ratio.

NUCLEAR REACTIONS ²³²Th(p, X), E=600 MeV; measured At isotope production rates.

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO0004.