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NSR database version of May 19, 2024.

Search: Author = K.Steffensen

Found 8 matches.

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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, T1/2, B(E1), B(E2), B(M1) for K=3/2 band states below 250 keV, intrinsic electric dipole moment D0; calculated T1/2, 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), T1/2, 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, T1/2, 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 T1/2, 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 T1/2, 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 218,219,220,221,222,223At [from 232Th(p, X), E=600 MeV]; measured βγ-coin, β-activity, K X-ray spectra; deduced T1/2. 216Bi [from 220At(α-decay)]; measured α-spectra; deduced T1/2, 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.


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