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NSR database version of April 27, 2024.

Search: Author = J.Borggreen

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1990DR06      Nucl.Phys. A515, 466 (1990)

M.W.Drigert, M.Piiparinen, R.V.F.Janssens, R.Holzmann, I.Ahmad, J.Borggreen, R.R.Chasman, P.J.Daly, B.K.Dichter, H.Emling, U.Garg, Z.W.Grabowski, T.L.Khoo, W.C.Ma, M.Quader, D.C.Radford, W.Trzaska

Discrete and Continuum Gamma-Ray Studies of ¹⁴⁷Gd and ¹⁴⁸Gd

NUCLEAR REACTIONS ¹¹⁶Cd(³⁶S, 5n), (³⁶S, 4n), E=170 MeV; measured Eγ, Iγ, γγ(θ), γγ-correlations, Doppler shifts. ^147,148Gd deduced levels, J, π, band structure, deformation. Enriched target, Compton-suppressed Ge-detectors, central array of BGO hexagons.

doi: 10.1016/0375-9474(90)90594-C
Citations: PlumX Metrics

1990WA09      Phys.Rev.Lett. 65, 416 (1990)

P.M.Walker, G.Sletten, N.L.Gjorup, M.A.Bentley, J.Borggreen, B.Fabricius, A.Holm, D.Howe, J.Pedersen, J.W.Roberts, J.F.Sharpey-Schafer

High-K Barrier Penetration in ¹⁷⁴Hf: A challenge to K selection

NUCLEAR REACTIONS ¹³⁰Te(⁴⁸Ca, 4n), E ≈ 198 MeV; measured γγ-coin. ¹⁷⁴Hf deduced levels, J, π, isomer decay features, band structure.

doi: 10.1103/PhysRevLett.65.416
Citations: PlumX Metrics

1988CH27      Nucl.Phys. A485, 136 (1988)

P.Chowdhury, B.Fabricius, C.Christensen, F.Azgui, S.Bjornholm, J.Borggreen, A.Holm, J.Pedersen, G.Sletten, M.A.Bentley, D.Howe, A.R.Mokhtar, J.D.Morrison, J.F.Sharpey-Schafer, P.M.Walker, R.M.Lieder

Decay of High-Spin Isomers in Os Nuclei by Barrier Penetration

NUCLEAR REACTIONS ¹⁵⁰Nd(³⁶S, 4n), E=160 MeV; ¹⁷⁰Er(¹⁸O, 4n), E=85 MeV; measured E(γ), I(ce), I(γ), γγ-coin, I(γ)(θ). ^182,184Os deduced levels, J, π, K, g(K), configurations, T_1/2. Ge-multi-array, Compton shields, pulsed beam, recoil technique.

doi: 10.1016/0375-9474(88)90526-X
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1988DR01      Phys.Lett. 201B, 223 (1988)

M.W.Drigert, R.V.F.Janssens, R.Holzmann, R.R.Chasman, I.Ahmad, J.Borggreen, P.J.Daly, B.K.Dichter, H.Emling, U.Garg, Z.W.Grabowski, T.L.Khoo, W.C.Ma, M.Piiparinen, M.Quader, D.C.Radford, W.Trzaska

Evidence for Superdeformation in ¹⁴⁸Gd

RADIOACTIVITY ¹⁴⁸Gd(α) [from ¹¹⁶Cd(³⁶S, 4n), E=170 MeV]; measured Eγ, Iγ, γγ-coin, energy correlations. ¹⁴⁸Gd deduced moment of inertia superdeformation. Compton suppressed Ge detectors. Cranked Strutinsky calculations.

NUCLEAR STRUCTURE ^{146,147,148,150,151,152,153,154,155,156}Er, ^{145,147,148,149,150,151,152,153,154,155}Ho, ^{144,145,146,147,148,149,150,151,152,153}Dy, ^{143,144,145,146,147,148,149,150,151,152,153}Tb, ^{142,143,144,145,146,147,148,149,150,151,152}Gd, ^{141,142,143,144,145,146,147,148,149,150,151}Eu, ^{140,141,142,143,144,145,146,147,148,149,150}Sm, ^{139,140,141,142,143,144,145,146,147,148,149}Pm, ^{138,139,140,141,142,143,144,145,146,147,148}Pr, ^{138,139,140,141,142,143,144,145,146,147,148}Nd; calculated moments of inertia. ¹⁴⁸Gd deduced superdeformation evidence. Cranked Strutinsky model.

doi: 10.1016/0370-2693(88)90217-1
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1987BO10      Nucl.Phys. A466, 371 (1987)

J.Borggreen, G.Sletten, S.Bjornholm, J.Pedersen, A.Del Zoppo, D.C.Radford, R.V.F.Janssens, P.Chowdhury, H.Emling, D.Frekers, T.L.Khoo

Single Particle Radiation between High Spin States in ¹⁴⁷Gd

NUCLEAR REACTIONS ¹²²Sn(³⁰Si, 5n), E=153 MeV; measured γγ-coin, Iγ(θ), recoil distance. ¹⁴⁷Gd deduced levels, J, π, T_1/2, configurations. Ge detectors, NaI array, plunger, bunched beam.

doi: 10.1016/0375-9474(87)90447-7
Citations: PlumX Metrics

1987PI07      Phys.Lett. 194B, 468 (1987)

M.Piiparinen, M.W.Drigert, R.V.F.Janssens, I.Ahmad, J.Borggreen, R.R.Chasman, P.J.Daly, B.K.Dichter, H.Emling, U.Garg, Z.W.Grabowski, R.Holzmann, T.L.Khoo, W.C.Ma, M.Quader, D.C.Radford, W.Trzaska

Level Structure of ¹⁴⁸Gd up to I = 44

NUCLEAR REACTIONS ¹¹⁶Cd(³⁶S, 4n), E=170 MeV; measured Eγ, Iγ, γγ-coin. ¹⁴⁸Gd deduced levels, J, π, γ-branching, γ multipolarity, configurations. Compton suppressed Ge spectrometer array.

doi: 10.1016/0370-2693(87)90218-8
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1985BO37      Nucl.Phys. A443, 120 (1985)

J.Borggreen, G.Sletten, S.Bjornholm, J.Pedersen, R.V.F.Janssens, I.Ahmad, P.Chowdhury, T.L.Khoo, Y.H.Chung, P.J.Daly

Nuclear Structure Effects in the Feeding of Yrast States of Gd, Dy and Er Nuclei

NUCLEAR REACTIONS ^120,122,124Sn(³⁰Si, xn), E=145, 153 MeV; ¹³⁰Te(³⁰Si, xn), E=137 MeV; ^{118,120,122,124}Sn(³⁴S, xn), E=155-165 MeV; ^{122,124,126,128,130}Te(³⁴S, xn), E=155, 170 MeV; measured Iγ. ^{146,147,148,149}Gd, ^{148,150,151,152,154,155,156}Dy, ^{152,153,154,155,156,157,158,159,160}Er deduced yrast population. Ge detector, NaI array.

doi: 10.1016/0375-9474(85)90324-0
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1985PE01      Phys.Rev.Lett. 54, 306 (1985)

J.Pedersen, B.B.Back, S.Bjornholm, J.Borggreen, M.Diebel, G.Sletten, F.Azgui, H.Emling, H.Grein, G.Seiler-Clark, W.Spreng, H.J.Wollersheim, P.Walker, S.Aberg

Population of Triaxial Rotor Levels in ¹⁸²Os

NUCLEAR REACTIONS ⁴⁸Ca, ^48,50Ti(¹³⁶Xe, X), E=4.3-4.8 MeV/nucleon; measured Eγ, Iγ. ¹⁸²Os deduced isomer, J, T_1/2, decay characteristics, K selection rule violation, yrast configuration triaxiality.

doi: 10.1103/PhysRevLett.54.306
Citations: PlumX Metrics

1985PE07      Z.Phys. A321, 567 (1985)

J.Pedersen, B.B.Back, S.Bjornholm, J.Borggreen, G.Sletten, F.Azgui, H.Emling, H.Grein, G.Seiler-Clark, W.Spreng, H.J.Wollersheim, P.Walker

High-Spin Isomers in W and Os Nuclei; Competition between K-quantization and triaxiality

NUCLEAR REACTIONS ⁴⁸Ca, ^48,50Ti(¹³⁶Xe, X), E=584-647 MeV; measured Eγ, Iγ, γ(t). ^178,180W, ^182,183,180Os deduced levels, K, J, π, γ-branching, isomers.

doi: 10.1007/BF01432431
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1984SL03      Phys.Lett. 135B, 33 (1984)

G.Sletten, S.Bjornholm, J.Borggreen, J.Pedersen, P.Chowdhury, H.Emling, D.Frekers, R.V.F.Janssens, T.L.Khoo, Y.H.Chung, M.Kortelahti

Nucleon Alignment to very High Spins in ¹⁴⁷Gd: Rapid ' rotation ' of fermion system

NUCLEAR REACTIONS ¹²²Sn(³⁰Si, 5n), E=153 MeV; measured Eγ, Iγ, γ(θ). ¹⁴⁷Gd deduced levels, γ-branching, J, π, yrast sequence, configuration, fermion system rotation evidence.

doi: 10.1016/0370-2693(84)90448-9
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1983KH03      Phys.Scr. T5, 16 (1983)

T.L.Khoo, P.Chowdhury, H.Emling, D.Frekers, R.V.F.Janssens, W.Kuhn, A.Pakkanen, Y.H.Chung, P.J.Daly, Z.W.Grabowski, H.Helppi, M.Kortelahti, S.Bjornholm, J.Borggreen, J.Pedersen, G.Sletten

Nuclear Shape Transitions and Some Properties of Aligned-Particle Configurations at High Spin

NUCLEAR STRUCTURE ^{148,152,156,160}Dy, ¹⁴⁷Gd; analyzed high-spin state, effective quadrupole moment, feeding times data; deduced shape dependence on spin, neutron number.

NUCLEAR REACTIONS ¹²²Sn(³⁰Si, 5n), E not given; measured γγ-coin. ¹⁴⁷Gd deduced levels, γ-branching.

doi: 10.1088/0031-8949/1983/T5/003
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1983PE13      Phys.Scr. T5, 162 (1983)

J.Pedersen, S.Bjornholm, J.Borggreen, J.Kownacki, G.Sletten

Intrinsic Excitations as Yrast Structures in ¹⁷⁹W above I ≈ (35/2)(h-bar)

NUCLEAR REACTIONS ¹⁷⁰Er(¹³C, 4n), E=61-65 MeV; measured γγ-coin. ¹⁷⁹W deduced levels, isomer T_1/2, yrast band, J, π, K, configurations, deformation aligned state dominance, high-spin degeneracy.

doi: 10.1088/0031-8949/1983/T5/030
Citations: PlumX Metrics

1982BA46      Nucl.Phys. A389, 93 (1982)

O.Bakander, C.Baktash, J.Borggreen, J.B.Jensen, J.Kownacki, J.Pedersen, G.Sletten, D.Ward, H.R.Andrews, O.Hausser, P.Skensved, P.Taras

Co-Existence of Spherical and Oblate Configurations in ¹⁴⁷Gd

NUCLEAR REACTIONS ¹³⁵Ba(¹⁶O, 4n), E=77-84 MeV; ¹²⁴Sn(²⁸Si, 5n), E=128-140 MeV; measured γγ-coin, Iγ(θ), I(ce). ¹⁴⁷Gd deduced levels, J, π, isomer T_1/2, reduced transition probabilities. Pulsed beam, Ge(Li), Si(Li) detectors, NaI(Tl) array, mini-orange spectrometer.

doi: 10.1016/0375-9474(82)90293-7
Citations: PlumX Metrics

1982FI15      Nucl.Phys. A389, 218 (1982)

C.A.Fields, K.H.Hicks, R.A.Ristinen, F.W.N.De Boer, P.M.Walker, J.Borggreen, L.K.Peker

A Study of the Rotational Side-Bands in ¹⁶²Dy

NUCLEAR REACTIONS ¹⁶⁰Gd(α, 2n), E=24, 28 MeV; measured E(γ), I(γ)(E, t, θ), γγ-coin, ICC. ¹⁶²Dy deduced levels, K, J, π. Enriched targets, Ge(Li), hyperpure Ge detectors, mini-orange spectrometer. Two-quasiparticle plus rotor analysis.

doi: 10.1016/0375-9474(82)90517-6
Citations: PlumX Metrics

1982LI04      Nucl.Phys. A375, 291 (1982)

R.M.Lieder, G.Sletten, J.Borggreen, J.Pedersen

Study of Band Crossings in ¹⁸²Os

NUCLEAR REACTIONS ¹⁶⁸Er(¹⁸O, xnγ), E=81 MeV; measured Eγ, Iγ, σ(Eγ, θ), γγ-coin, I(ce) for x=4, 5. ^181,182Os deduced levels, J, π, ICC, δ, γ-branching. Enriched targets, Ge(Li), Si-Li and NaI(Tl) detectors, mini-orange conversion electron spectrometer.

doi: 10.1016/0375-9474(82)90413-4
Citations: PlumX Metrics

1982PA10      Phys.Rev.Lett. 48, 1530 (1982)

A.Pakkanen, Y.H.Chung, P.J.Daly, S.R.Faber, H.Helppi, J.Wilson, P.Chowdhury, T.L.Khoo, I.Ahmad, J.Borggreen, Z.W.Grabowski, D.C.Radford

Transition from Collective to Aligned-Particle Configurations at High Spin in ¹⁵⁴Dy

NUCLEAR REACTIONS ¹²⁴Sn(³⁴S, 4n), E=145-165 MeV; measured γγ-coin, γ(θ), σ(Eγ), recoil. ¹⁵⁴Dy deduced levels, J, π, γ-branching, T_1/2, yrast level intrinsic quadrupole moments, backbending, shape change.

doi: 10.1103/PhysRevLett.48.1530
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1981CH19      Phys.Rev.Lett. 47, 778 (1981)

P.Chowdhury, J.Borggreen, T.L.Khoo, I.Ahmad, R.K.Smither, S.R.Faber, P.J.Daly, C.L.Dors, J.Wilson

Feeding of High-Spin Particle Yrast States by Collective Structures in the Continuum

NUCLEAR REACTIONS ¹²²Sn(³⁴S, 4n), E=144-184 MeV; measured σ(Eγ, E), γ-multiplicity; deduced continuum cascade, collective effects. ¹⁵²Dy deduced yrast level population vs J, stretched dipole, quadrupole continuum γ components. NAI detector.

doi: 10.1103/PhysRevLett.47.778
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1981KH02      Phys.Scr. 24, 283 (1981)

T.L.Khoo, J.Borggreen, P.Chowdhury, I.Ahmad, R.K.Smither, S.R.Faber, P.J.Daly, C.L.Dors, J.Wilson

Very High Spin Yrast States and the Link to the Continuum

NUCLEAR REACTIONS ¹²²Sn(³⁴S, 4n), E=144, 151, 160, 168, 176, 184 MeV; measured γγ-coin, γ-multiplicity; deduced stretched quadrupole, dipole γ-continuum components. ¹⁵²Dy deduced yrast transition relative population intensity.

doi: 10.1088/0031-8949/24/1B/024
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1981WA14      Nucl.Phys. A365, 61 (1981)

P.M.Walker, W.H.Bentley, S.R.Faber, R.M.Ronningen, R.B.Firestone, F.M.Bernthal, J.Borggreen, J.Pedersen, G.Sletten

Rotational Bands in ¹⁷⁰Yb Observed following (α, xn) Reactions

NUCLEAR REACTIONS ¹⁶⁸Er(α, 2n), E=27 MeV; ¹⁷⁰Er(α, 4n), E=50 MeV; measured Eγ, Iγ, γγ-coin, αγ(t), γ(θ), ICC. ¹⁷⁰Yb deduced levels, K, J, π, T_1/2, rotational bands. Ge detector, Ge(Li), Si-Li detectors, enriched targets.

doi: 10.1016/0375-9474(81)90387-0
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1980BO07      Z.Phys. A294, 113 (1980)

J.Borggreen, S.Bjornholm, O.Christensen, A.Del Zoppo, B.Herskind, J.Pedersen, G.Sletten, F.Folkmann, R.S.Simon

Gamma-Spectroscopy within the Island of High-Spin Isomers Near N=82

NUCLEAR REACTIONS ¹⁰⁶Pd, ¹⁰⁰Mo(⁵⁰Ti, xnγ), (⁶⁵Cu, xnγ), E=4.6 MeV/nucleon; measured Eγ, Iγ, γ(t), sum spectra. ^144,147Gd, ¹⁴⁸Tb, ^151,152Dy, ^{149,150,151,152,153}Ho, ^{151,152,153,154}Er deduced levels, T_1/2, J, π.

doi: 10.1007/BF01435046
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1980WI11      Z.Phys. A296, 185 (1980)

J.Wilson, S.R.Faber, P.J.Daly, I.Ahmad, J.Borggreen, P.Chowdhury, T.L.Khoo, R.D.Lawson, R.K.Smither, J.Blomqvist

The πh³_11/2 Spectrum in the Three Valence Proton Nucleus ¹⁴⁹₆₇Ho₈₂

NUCLEAR REACTIONS ¹²¹Sb, ¹²²Te(³²S, xnyp), E=155-180 MeV; measured Eγ, Iγ, γγ-coin, γγ(t). ¹⁴⁹Ho deduced levels, T_1/2, J, π, γ-multipolarity, configuration. Enriched targets.

doi: 10.1007/BF01412660
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1979DO02      Nucl.Phys. A314, 61 (1979)

C.L.Dors, F.M.Bernthal, T.L.Khoo, C.H.King, J.Borggreen, G.Sletten

High-Spin Rotational Levels in ¹⁷⁸W Populated in the ¹⁷⁷Hf(α3nγ) Reaction

NUCLEAR REACTIONS ¹⁷⁷Hf(α, 3n), E=38 MeV; measured Eγ, Iγ(θ), Eγ versus Eα, γγt-coin, αγ-delay. ¹⁷⁸W deduced levels, J, π, K, T_1/2, multipolarities. Ge(Li) detectors. Enriched target.

doi: 10.1016/0375-9474(79)90555-4
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1978BE15      Phys.Lett. 74B, 211 (1978)

F.Bernthal, B.B.Back, O.Bakander, J.Borggreen, J.Pedersen, G.Sletten, H.Beuscher, D.Haenni, R.Lieder

Connection between Backbending and High-Spin Isomer Decay in ¹⁷⁹W

NUCLEAR REACTIONS ¹⁷⁰Er(¹³C, 4nγ), E not given; ¹⁸⁰Hf(α, 5nγ), E=58 MeV; measured γ(t), γγ(t). ¹⁷⁹W deduced levels, J, π, T_1/2.

doi: 10.1016/0370-2693(78)90555-5
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1977BO09      Nucl.Phys. A279, 189 (1977)

J.Borggreen, J.Pedersen, G.Sletten, R.Heffner, E.Swanson

The Rotational Band of the ²³⁶U Shape Isomer

NUCLEAR REACTIONS ²³⁵U(d, p), E=12 MeV; measured ce-delayed fission coin, pce-coin. ^236mU deduced rotational constant.

doi: 10.1016/0375-9474(77)90222-6
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1977PE15      Phys.Rev.Lett. 39, 990 (1977)

J.Pedersen, B.B.Back, F.M.Bernthal, S.Bjornholm, J.Borggreen, O.Christensen, F.Folkmann, B.Herskind, T.L.Khoo, M.Neiman, F.Puhlhofer, G.Sletten

Island of High-Spin Isomers Near N = 82

NUCLEAR STRUCTURE ^146,147Gd; measured reaction γ-multiplicities, delayed S-width; deduced T_1/2 of high spin isomers.

doi: 10.1103/PhysRevLett.39.990
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1976AN11      Nucl.Phys. A269, 338 (1976)

V.Andersen, C.J.Christensen, J.Borggreen

The Shape Isomer in ²³⁶U Populated by Thermal Neutron Capture

NUCLEAR REACTIONS ²³⁵U(n, γ), E=th; measured ce X-coin, fragment delay; obtained isomeric/prompt fission ratio. ^236mU shape isomer deduced γ/F branching ratio.

doi: 10.1016/0375-9474(76)90685-0
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1974BO02      Nucl.Phys. A218, 621 (1974)

J.Borggreen, J.Hattula, E.Kashy, V.Maarbjerg

Search for a γ-Branch from Shape Isomers in ²³⁶U and ²³⁸Np

NUCLEAR REACTIONS ²³⁵U(d, p), E=11 MeV; ²³⁸U(p, n), E=8 MeV; measured σ(delayed γ), T_1/2=130 ns, 2 μs < T_1/2 < 20 ms. ^236mU, ^238mNp deduced limits on σ for delayed γ from shape isomer.

doi: 10.1016/0375-9474(74)90044-X
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1974FO24      Nucl.Instrum.Methods 119, 117 (1974)

F.Folkmann, J.Borggreen, A.Kjeldgaard

Sensitivity in Trace-Element Analysis by p, α and ¹⁶O Induced X-Rays

NUCLEAR REACTIONS Cu, Y, In, Nd, Tm, Pd(p, p), (α, α), (¹⁶O, ¹⁶O), E=3, 5 MeV/amu; measured σ(K, L X-rays).

doi: 10.1016/0029-554X(74)90740-X
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1972KA59      Comment.Phys.-Math. 42, 266 (1972)

E.Kashy, J.Hattula, J.Borggreen, V.Maarbjerg

Search for γ-Branch in the ^236mU Fission Isomer Decay

RADIOACTIVITY ^236mU; measured upper limit for γ-ray decay.

1971BO06      Nucl.Phys. A162, 407 (1971)

J.Borggreen, E.K.Hyde

Alpha Decay of Neutron-Deficient Osmium Isotopes

NUCLEAR REACTIONS ¹⁶⁴Er(¹⁶O, xn)¹⁷²Os/¹⁷³Os/¹⁷⁴Os, E=90-154 MeV; measured σ(E). Enriched target.

RADIOACTIVITY ^172,173,174Os; measured Eα, T_1/2; deduced Qα, α/(EC+β+).

doi: 10.1016/0375-9474(71)90994-8
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1970BJ02      Nucl.Phys. A156, 561 (1970)

S.Bjornholm, J.Borggreen, E.K.Hyde

Search for New Islands of Fission Isomerism

NUCLEAR REACTIONS ¹⁹⁷Au(HI, X), E=5-10 MeV/nucleon for HI=¹¹B, ¹²C, ¹⁴N, ¹⁶O; measured σ(E) for SF-isomers. ^{200,201,202,203,204}Po, ^{201,202,203,204,205}At, ^{202,203,204,205,206,207}Rn, ^{202,203,204,205,206,207,208,209,210}Fr deduced no SF-isomer (σ < 0.1 μb) with 2ns < T_1/2<2000s.

doi: 10.1016/0375-9474(70)90252-6
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1970BO02      Nucl.Phys. A143, 255 (1970)

J.Borggreen, G.Sletten

Isomeric States in Odd-N Isotopes of Sm, Gd, Dy and Er Ascribed to the 11/2^- [505] Nilsson Configuration

NUCLEAR REACTIONS ¹⁴⁸Nd, ¹⁵²Sm(α, n), E=18 MeV; ¹⁵³Eu(d, 2n), E=12 MeV; ^155,157Gd, ¹⁶¹Dy(³He, 3n), E = 20 MeV; measured Eγ, Iγ, I(ce), γ-delay, ce-delay. ¹⁵¹Sm, ^153,155Gd, ^155,157Dy, ¹⁶¹Er deduced levels, T_1/2, J, π, ICC, γ-multipolarity. Enriched targets, Ge(Li) detector.

doi: 10.1016/0375-9474(70)90562-2
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1970BO13      Phys.Rev. C2, 1841 (1970)

J.Borggreen, K.Valli, E.K.Hyde

Production and Decay Properties of Protactinium Isotopes of Mass 222 to 225 Formed in Heavy-Ion Reactions

RADIOACTIVITY ^{222,223,224,225}Pa, ^{218,219,220,221}Ac, ^215,216,217Fr, ²¹³At; measured T_1/2, Eα, Iα; deduced hindrance factors, Q.

doi: 10.1103/PhysRevC.2.1841
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1970VA13      Phys.Rev. C1, 2115 (1970)

K.Valli, E.K.Hyde, J.Borggreen

Production and Decay Properties of Thorium Isotopes of Mass 221-224 Formed in Heavy-Ion Reactions

RADIOACTIVITY ²²⁸U, ²²⁴Th, ²²⁰Ra, ²¹⁶Rn, ²²⁷U, ²²³Th, ²¹⁹Ra, ²¹⁵Rn, ²¹¹Po, ²²²Th, ²¹⁸Ra, ²¹⁴Rn, ²²¹Th, ²¹⁷Ra, ²¹³Rn; measured Eα, T_1/2; deduced Q, α-branching.

doi: 10.1103/PhysRevC.1.2115
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1969BO17      Nucl.Phys. A131, 241 (1969)

J.Borggreen, G.Lovhoiden, J.C.Waddington

Mixing of the Positive Parity States in ¹⁵⁵Gd

NUCLEAR STRUCTURE ¹⁵⁵Gd; calculated levels, quadrupole moment, μ, σ(d, t) for ¹⁵⁶Gd(d, t).

doi: 10.1016/0375-9474(69)90533-8
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1968BJ04      Yadern.Fiz. 8, 459 (1968); Soviet J.Nucl.Phys. 8, 267 (1969)

S.Bjornholm, I.Borggreen, Y.P.Gangrskii, G.Sletten

Investigation of (d, p) and (d, t) Reactions Leading to Spontaneously Fissile Isomeric States

NUCLEAR REACTIONS ^241,243Am(d, p), (d, t), E=9-13 MeV; measured σ(E); deduced isomeric ratio.

1968BJ06      Nucl.Phys. A118, 261(1968)

S.Bjornholm, J.Borggreen, D.Davies, N.J.S.Hansen, J.Pedersen, H.L.Nielsen

Energy Levels in ²³⁴U Populated in the β-Decay of ²³⁴Pa(UZ)

RADIOACTIVITY ²³⁴Pa [from ²³⁸U decay]; measured Eγ, Eβ, Iγ, I(ce), Iβ, βγ-, γγ-, ceγ-coin, γγ-delay. ²³⁴U deduced levels, J, π. Ge(Li) detector.

doi: 10.1016/0375-9474(68)90337-0
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1968BO18      Nucl.Phys. A113, 659 (1968)

J.Borggreen, J.P.Gjaldbaek

Note on the Decay of the 115-μs Isomer in ¹⁵⁹Dy

RADIOACTIVITY ^159mDy[from ¹⁵⁹Tb(d, 2n)]; measured Eγ, Iγ, I(ce), γγ-, γce-coin. ¹⁵⁹Dy deduced levels, J, π. Ge(Li) detector.

doi: 10.1016/0375-9474(68)90174-7
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1968BO22      Nucl.Phys. A115, 14 (1968)

J.Borggreen, R.A.Naumann

M2 Isomer in ¹⁹⁹Au

RADIOACTIVITY ^199mAu [from ¹⁹⁸Pt(d, n)]; measured T_1/2, Eγ. ¹⁹⁹Au deduced levels, γ-multipolarity, mixing ratio. Enriched target.

doi: 10.1016/0375-9474(68)90638-6
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1967AN04      Nucl.Phys. A102, 241 (1967)

A.Andreeff, R.Kastner, P.Manfrass, M.Bonitz, J.Borggreen, N.J.Sigurd Hansen

The ±-Forbidden Decay of the 4.1 μs Isomeric State in ¹⁷⁰Tm

NUCLEAR REACTIONS ¹⁶⁹Tm(n, γ), E=th; ^170mTm measured T_1/2, σ act, Eγ, Iγ, γγ-coin, γ-delay. ¹⁷⁰Tm deduced levels. Natural target. ¹⁶⁹Tm(d, p), E=9 MeV; ^170mTm measured T_1/2, Eγ, Iγ, E(ce), I(ce), γ-delay, ce-delay. Natural target.

doi: 10.1016/0375-9474(67)90019-X
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset23494.

1967BJ03      Nucl.Phys. A95, 513 (1967)

S.Bjornholm, J.Borggreen, L.Westgaard, V.A.Karnaukhov

Excitation Energy of the Spontaneously Fissioning Isomeric State in ²⁴⁰Am

NUCLEAR REACTIONS ²⁴⁰Pu(d, 2n), E = 12.1 MeV; ²⁴⁰Pu(p, n), E = 10.3-11.3 MeV; measured σ (delayed fission). ²⁴¹Pu(p, 2n), E = 9.6-13.6 MeV; measured σ (delayed fission); deduced threshold. Enriched target. ^240mAm measured T_1/2 for spontaneous fission.

doi: 10.1016/0375-9474(67)90846-9
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO2042.

1967BO05      Nucl.Phys. A95, 202 (1967)

J.Borggreen, L.Westgaard, N.J.S.Hansen

A Spin 11/2 Isomer in ¹⁵⁷Gd

RADIOACTIVITY ^157mGd measured Eγ, Iγ, γγ-coin, γγ-delay, T_1/2. ¹⁵⁷Gd deduced levels, J, π. Ge(Li) detector. ^150,152,154Sm(α, n), Eα = 18 MeV; measured σ, Eγ, αγ-delay. Enriched targets, Ge(Li) detector.

doi: 10.1016/0375-9474(67)90161-3
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1967BO08      Nucl.Phys. A96, 561 (1967)

J.Borggreen, N.J.S.Hansen, J.Pedersen, L.Westgaard, J.Zylicz, S.Bjornholm

Isomerism in ¹⁷⁶Hf and Some Neighbouring Even Nuclei

NUCLEAR REACTIONS ¹⁷⁶Lu(p, nγ), ¹⁸¹Ta(p, 2nγ), E = 10, 12 MeV; measured pγ-delay. ¹⁷³Yb(d, pγ), ¹⁷⁶Yb(d, d'γ), E = 12 MeV; measured dγ-delay. ¹⁷⁶Hf, ^174,176Yb, ¹⁸⁰W levels deduced T_1/2. Enriched ¹⁷⁶Lu, ^173,176Yb targets, Ge(Li) detector. ^176mHf, ^174m,176mYb, ^180mW; measured Eγ, Iγ, I(ce), γγ-, γce-coin, γce-delay. ¹⁷⁶Hf, ^174,176Yb, ¹⁸⁰W deduced levels, T_1/2, J, π.

doi: 10.1016/0375-9474(67)90605-7
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1967BO23      Phys.Letters 25B, 402 (1967)

J.Borggreen, Y.P.Gangrsky, G.Sletten, S.Bjornholm

A New Spontaneously Fissioning Isomer: ²³⁸Am

NUCLEAR STRUCTURE ²³⁸Am; measured not abstracted; deduced nuclear properties.

doi: 10.1016/0370-2693(67)90158-X
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1966BO02      Nucl.Phys. 77, 619 (1966)

J.Borggreen, H.J.Frahm, N.J.S.Hansen, S.Bjornholm

Lifetimes of E3 Transitions in the Odd-Mass Ho Isotopes

RADIOACTIVITY ¹⁵⁹Ho, ¹⁶¹Ho, ¹⁶³Ho isomers [from ¹⁶⁰Dy, ¹⁶¹Dy, ¹⁶²Dy, ¹⁶³Dy(p, n)(p, 2n)], measured Eγ, Iγ, ce, ICC, T_1/2. ¹⁵⁹Ho, ¹⁶¹Ho, ¹⁶³Ho deduced level , J, π. Enriched targets. ¹⁶⁰Dy, ¹⁶¹Dy, ¹⁶²Dy, ¹⁶³Dy (p, n)(p, 2n), E=9-13 MeV; measured σ, p, isomer. Enriched targets.

doi: 10.1016/0029-5582(66)90787-5
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1965BJ01      Nucl.Phys. 73, 593 (1965)

S.Bjornholm, J.Borggreen, H.J.Frahm, N.J.S.Hansen

Isomers in Odd-Mass Lu Isotopes, Ascribed to the (541)1/2^- Nilsson Configuration

RADIOACTIVITY ^{169,171,173,175}Lu [from ^{170,171,173,176}Yb (p, xn)]; measured T_1/2, Eγ, ICC. ^{169,171,173,175}Lu deduced levels, J, π. Enriched targets.

doi: 10.1016/0029-5582(65)90704-2
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1965BJ03      Phys.Rev. 140, B816 (1965)

S.Bjornholm, J.Borggreen, H.J.Frahm, N.J.S.Hansen, O.Schult

Decay of the 185-μsec Isomer in Ho¹⁶⁶

NUCLEAR STRUCTURE ¹⁶⁶Ho; measured not abstracted; deduced nuclear properties.

doi: 10.1103/PhysRev.140.B816
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1965BO22      Nucl.Phys. 72, 509 (1965)

J.Borggreen, H.J.Frahm, N.J.S.Hansen, S.Bjornholm

Observation of the (505)11/2^- Nilsson State as an Isomer in ¹⁵⁹Dy

NUCLEAR REACTIONS ¹⁵⁹Tb(p, n), E = 8-12 MeV; ¹⁵⁹Tb(d, 2n) E = 12 MeV; Gd(α, xn), E = 18 MeV; measured σ(Ep), pγ-delay. ¹⁵⁹Dy deduced T_1/2. ¹⁵⁹Dy; measured Eγ, Iγ, ICC. ¹⁵⁹Dy deduced levels, J, π.

doi: 10.1016/0029-5582(65)90407-4
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1964BO35      Kgl. Danske Videnskab. Selskab., Mat.-Fys. Medd. 34, No. 9 (1964)

J.Borggreen, B.Elbek, R.B.Leachman

C¹²(C¹², α)Ne²⁰ Cross Section Measurements

NUCLEAR STRUCTURE ¹²C; measured not abstracted; deduced nuclear properties.

1962BO03      Nuclear Phys. 29, 515 (1962)

J.Borggreen, O.B.Nielsen, H.Nordby

Mixing of the γ-Vibrational Band and the Ground-State Rotational Band of Pu²³⁸

NUCLEAR STRUCTURE ²³⁸Np; measured not abstracted; deduced nuclear properties.

doi: 10.1016/0029-5582(62)90201-8
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1961BE21      Phys.Rev. 123, 564 (1961)

U.Bertelsen, I.Borggreen, O.Nathan

Directional Correlation Measurements in Hf¹⁷⁸

NUCLEAR STRUCTURE ¹⁷⁸Ta, ¹⁷⁸Hf; measured not abstracted; deduced nuclear properties.

doi: 10.1103/PhysRev.123.564
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