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Search: Author = F.W.De Boer

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2011DE24      Int.J.Mod.Phys. E20, 1787 (2011)

F.W.N.De Boer, C.A.Fields

A reevaluation of evidence for light neutral bosons in nuclear emulsions

doi: 10.1142/S021830131101960X
Citations: PlumX Metrics

2008VI02      Acta Phys.Pol. B39, 483 (2008)

A.Vitez, A.Krasznahorkay, J.Gulyas, M.Csatlos, L.Csige, Z.Gacsi, A.Krasznahorkay, Jr., B.M.Nyako, F.W.N.de Boer, T.J.Ketel, J.van Klinken

Anomalous Internal Pair Creation in 8Be as a Signature of the Decay of a New Particle

RADIOACTIVITY 8Be [from 7Li(p, γ), E=441 keV]; measured angular distribution of the e+e- pairs from the M1 decay of the 17.64 MeV state. Compared results to model calculations and previous measurement.

2001DE11      J.Phys.(London) G27, L29 (2001)

F.W.N.de Boer, K.Bethge, H.Bokemeyer, R.van Dantzig, J.van Klinken, V.Mironov, K.A.Muller, K.E.Stiebing

Further Search for a Neutral Boson with a Mass Around 9 MeV/c2

NUCLEAR REACTIONS 7Li(p, e+e-), E=1.1 MeV; 11B(d, ne+e-), E=1.6 MeV; measured electron-positron sum energies, angular correlations; deduced possible neutral boson.

doi: 10.1088/0954-3899/27/4/102
Citations: PlumX Metrics

1997DE46      J.Phys.(London) G23, L85 (1997)

F.W.N.de Boer, R.van Dantzig, J.van Klinken, K.Bethge, H.Bokemeyer, A.Buda, K.A.Muller, K.E.Stiebing

Excess in Nuclear e+e- Pairs Near 9 MeV/c2 Invariant Mass

NUCLEAR REACTIONS 7Li, 11B(p, e+e-), E not given; 12C(p, p'e+e), E=20 MeV; 19F(p, γ), E=5.2 MeV; 11B(p, e+e-), E=98 MeV; analyzed pair production data; deduced evidence for short-lived neutral boson. Other data input.

doi: 10.1088/0954-3899/23/11/001
Citations: PlumX Metrics

1997DI05      Z.Phys. A358, 11 (1997)

E.Ditzel, J.M.Hoogduin, H.Backe, J.Baumann, F.W.N.de Boer, H.Bokemeyer, M.Debowski, R.Ganz, J.Gerl, T.Happ, M.Kaspar, J.van Klinken, T.Kroll, R.Kulessa, I.Peter, P.Salabura, H.Schaffner, S.Schremmer, K.Vetter, H.J.Wollersheim, H.Xie

Absence of E0 Transitions Around 1.8 MeV After Collisions of 238U with 181Ta

NUCLEAR REACTIONS 181Ta(238U, X), E=6.0 MeV/nucleon; measured e- spectra, e-(recoil)-coin. 181Ta, 238U deduced σ upper limits for E0 decays. Mini-orange spectrometers, PPAC, Doppler-corrected e- spectra.

doi: 10.1007/s002180050270
Citations: PlumX Metrics

1996DE51      Phys.Lett. 388B, 235 (1996)

F.W.N.de Boer, O.Frohlich, K.E.Stiebing, K.Bethge, H.Bokemeyer, A.Balanda, A.Buda, R.van Dantzig, Th.W.Elze, H.Folger, J.van Klinken, K.A.Muller, K.Stelzer, P.Thee, M.Waldschmidt

A Deviation in Internal Pair Conversion

NUCLEAR REACTIONS 7Li, 11B(p, e+e-), E not given; measured sum energy spectra, pairs yield, e+e-(θ). 12C, 8Be transition deduced M1 angular correlation deviates from internal pair conversion.

doi: 10.1016/S0370-2693(96)01311-1
Citations: PlumX Metrics

1996DI07      Nucl.Instrum.Methods Phys.Res. A376, 428 (1996)

E.Ditzel, J.M.Hoogduin, H.Backe, F.W.N.de Boer, H.Bokemeyer, M.Debowski, J.van Klinken, P.Salabura, H.J.Wollersheim, H.Xie

Doppler-Corrected Spectroscopy of Conversion Electrons with Mini-Oranges After Heavy-Ion Collisions

NUCLEAR REACTIONS 181Ta(238U, 238U'), E=6 MeV/nucleon; measured (projectile)(ce)-, (recoil ejectile)(ce)-coin; deduced precise Doppler corrections for conversion electron emitted with specific solid angle. System of 4 Mini-Orange spectrometers.

doi: 10.1016/0168-9002(96)00260-4
Citations: PlumX Metrics

1996HO18      Phys.Lett. 384, 43 (1996)

J.M.Hoogduin, E.Ditzel, A.Balanda, F.W.N.de Boer, H.Bokemeyer, J.Gerl, K.Heyde, J.van Klinken, A.Krasznahorkay, P.Salabura, H.J.Wollersheim

On the Two First Excited K = 0 Bands in 238U and 240Pu

NUCLEAR REACTIONS 238U(α, α'), (α, 2n), E=25 MeV; 181Ta(238U, 238U'), E=6 MeV/nucleon; analyzed I(ce). 238U, 240Pu deduced band structure.

doi: 10.1016/0370-2693(96)00798-8
Citations: PlumX Metrics

1990DE02      J.Phys.(London) G16, L1 (1990)

F.W.N.de Boer, J.Lehmann, J.Steyaert

Search for a Short-Lived Isoscalar Axion with Mass between 4 and 15 MeV c-2

NUCLEAR REACTIONS 7Li(p, γ), E=1.03 MeV; measured Eγ, Iγ. 8Be transition deduced axion branching ratio upper limits.

doi: 10.1088/0954-3899/16/1/001
Citations: PlumX Metrics

1989DE22      J.Phys.(London) G15, L177 (1989)

F.W.N.de Boer, J.Deutsch, J.Lehmann, R.Prieels, J.Steyaert

Addendum to ' Search for Elusive Neutral Particles in Nuclear Decay '

NUCLEAR STRUCTURE 16O; calculated 0+ level decay branching ratio upper limit correction factor. Electron-positron peak angular broadening effect.

doi: 10.1088/0954-3899/15/8/006
Citations: PlumX Metrics

1988DE22      J.Phys.(London) G14, L131 (1988)

F.W.N.de Boer, J.Deutsch, J.Lehmann, R.Prieels, J.Steyaert

Search for Elusive Neutral Particles in Nuclear Decay

NUCLEAR REACTIONS 19F(p, α), E=2.4, 3.8 MeV; measured e+e-(θ); deduced exotic particle coupling limits, branching ratio upper limits.

doi: 10.1088/0305-4616/14/6/002
Citations: PlumX Metrics

1986DE25      Phys.Lett. 180B, 4 (1986)

F.W.N.De Boer, K.Abrahams, A.Balanda, H.Bokemeyer, R.van Dantzig, J.F.W.Jansen, B.Kotlinski, M.J.A.De Voigt, J.van Klinken

Search for Short-Lived Axions in a Nuclear Isoscalar Transition

NUCLEAR REACTIONS 10B(p, p'), E=7 MeV; measured Eγ, Iγ, pair spectra. 10B transition deduced no axion events. Fourfold mini-orange spectrometer.

doi: 10.1016/0370-2693(86)90123-1
Citations: PlumX Metrics

1986DE36      Z.Phys. A325, 457 (1986)

F.W.N.de Boer, H.J.Wollersheim, H.Emling, H.Grein, E.Grosse, W.Spreng, G.Eckert, Th.W.Elze, K.Stelzer, Ch.Lauterbach

Nucleon Transfer Reactions to Rotational States Induced by 206,208Pb Projectiles

NUCLEAR REACTIONS 152Sm, 160Gd, 232Th(206Pb, 206Pb'γ), (208Pb, 208Pb'γ); 152Sm(208Pb, 207Pb), (208Pb, 209Pb), 232Th(206Pb, 207Pb), (206Pb, 208Pb), E=4.3-6.4 MeV/nucleon; measured γ spectra, yields, σ; deduced reaction parameters, neutron binding energies. 160Gd, 152Sm, 232Th levels deduced populating probabilites. Particle-γ coincidence techniques. Semi-classical models.

1985DE34      Nucl.Phys. A442, 637 (1985)

G.de Chambrier, W.Beer, F.W.N.de Boer, K.Bos, A.I.Egorov, M.Eckhause, K.L.Giovanetti, P.F.A.Goudsmit, B.Jeckelmann, K.E.Kiryanov, L.N.Kondurova, L.Lapina, H.J.Leisi, V.I.Marushenko, A.F.Mezentsev, A.A.Petrunin, A.G.Sergeev, A.I.Smirnov, G.Strassner, V.M.Suvorov, A.Vacchi, D.Wieser

Precision Measurement of the Wavelengths and Natural Line of 3d-2p Pionic X-ray Transitions in Low-Z Atoms

ATOMIC PHYSICS, Mesic-Atoms 12C, 16,18O, 24,26Mg, 28,30Si; measured pionic transmission wave lengths, X-rays; deduced 2p state strong interaction shifts, widths.

doi: 10.1016/0375-9474(85)90370-7
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1985DE42      Nucl.Phys. A444, 589 (1985)

F.W.N.De Boer, B.Aas, P.Baertschi, W.Beer, I.Beltrami, K.Bos, P.F.A.Goudsmit, U.Kiebele, B.Jeckelmann, H.J.Leisi, W.Ruckstuhl, G.Strassner, A.Vacchi, R.Weber

Precision Measurement of the 2p-1s Transition Wavelength in Muonic 13C

ATOMIC PHYSICS, Mesic-Atoms 13C; measured muonic X-rays, transition wavelength; deduced muon-nucleon interaction limits, 12,13C isotope shift. 13C deduced rms charge radius. Bent crystal spectrometer.

NUCLEAR REACTIONS 13C(μ-, X), E at rest; measured X-rays; deduced muon-nucleon interaction limits, 12,13C isotope shift. 13C deduced rms charge radius. Bent crystal spectrometer.

doi: 10.1016/0375-9474(85)90106-X
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1984AA02      Helv.Phys.Acta 57, 291 (1984)

B.Aas, W.Beer, I.Beltrami, K.Bos, P.F.A.Goudsmit, H.J.Leisi, W.Ruckstuhl, G.Strassner, A.Vacchi, F.W.N.de Boer, U.Kiebele, R.Weber

Prazisionsmessung der Wellenlange des 2p-1s Ueberganges im Muonischen 13C

ATOMIC PHYSICS, Mesic-Atoms 13C; measured 2P-1S transition wave length.

1984DE52      Phys.Rev.Lett. 53, 423 (1984)

F.W.N.de Boer, R.van Dantzig, M.Daum, J.Jansen, P.J.S.Watson, L.Felawka, C.Grab, A.van der Schaaf, T.Kozlowski, J.Martino, A.I.Smirnov

Search for Bound States of Neutrons and Negative Pions

doi: 10.1103/PhysRevLett.53.423
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1984FI07      Nucl.Phys. A422, 215 (1984)

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

Rotational Side-Bands in 164Er

NUCLEAR REACTIONS 162Dy(α, 2n), E=24 MeV; measured Eγ, Iγ(θ), γγ-coin. 165Ho(p, 2n), E=23 MeV; measured Eγ, Iγ(θ, t), γγ-coin. 164Er deduced levels, J, ICC, π, K, bandhead configurations, mixing strengths. Enriched targets, Ge(Li) and hyperpure Ge detectors, mini-orange spectrometer. Two-band mixing analysis.

doi: 10.1016/0375-9474(84)90515-3
Citations: PlumX Metrics

1984FI15      Nucl.Phys. A429, 259 (1984)

C.A.Fields, F.W.N.De Boer, R.A.Ristinen, P.A.Smith, E.Sugarbaker

The 33 and 43 MeV (3He, xnγ) Exclusive Reactions on Targets from Zr to Pb

NUCLEAR REACTIONS 90Zr, 108,110Pd, 118,120,124Sn, 150Nd, 196Pt, 197Au, 208Pb(3He, xn), E=33, 43 MeV; measured nγ-coin, exclusive σ(E(n)); deduced incident energy, target dependences, entry-state population.

doi: 10.1016/0375-9474(84)90207-0
Citations: PlumX Metrics

1984RU12      Nucl.Phys. A430, 685 (1984)

W.Ruckstuhl, B.Aas, W.Beer, I.Beltrami, K.Bos, P.F.A.Goudsmit, H.J.Leisi, G.Strassner, A.Vacchi, F.W.N.De Boer, U.Kiebele, R.Weber

Precision Measurement of the 2p-1s Transition in Muonic 12C: Search for new muon-nucleon interactions or accurate determination of the rms nuclear charge radius

ATOMIC PHYSICS, Mesic-Atoms 12C; measured muonic transition wavelength; deduced muon-nucleon interaction nature. 12C deduced rms charge radius. Crystal spectrometer.

doi: 10.1016/0375-9474(84)90101-5
Citations: PlumX Metrics

1983AL05      Phys.Rev. C27, 1032 (1983)

W.P.Alford, R.N.Boyd, E.Sugarbaker, F.W.N.de Boer, R.E.Brown, E.R.Flynn

Two-Step Contributions in the 206Pb(t(pol), p)208Pb Two-Neutron Transfer Reaction

NUCLEAR REACTIONS 206Pb(polarized t, p), E=17 MeV; measured σ(θ), A(θ). DWBA, sequential transfer calculations.

doi: 10.1103/PhysRevC.27.1032
Citations: PlumX Metrics

1983FI05      Nucl.Phys. A398, 512 (1983)

C.A.Fields, F.W.N.De Boer, J.Sau

A Study of the 84Kr(α, 2nγ)86Sr Reaction

NUCLEAR REACTIONS 84Kr(α, 2nγ), E=28 MeV; measured Eγ, Iγ(θγ, t), γγ-coin, γγ(t). 86Sr deduced levels, J, π, T1/2. Enriched target, Ge(Li) detectors. Weak-coupling analysis.

doi: 10.1016/0375-9474(83)90299-3
Citations: PlumX Metrics

1983FI06      Z.Phys. A311, 127 (1983)

C.A.Fields, F.W.N.de Boer

The 8+ Levels of 86Zr Revisited

NUCLEAR REACTIONS 86Sr(3He, 3n), E=33 MeV; measured Eγ, Iγ, Iγ(θ, t), γγ-coin. 86Zr deduced levels, J, π.

doi: 10.1007/BF01411617
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1983FI08      Nucl.Phys. A401, 117 (1983)

C.A.Fields, F.W.N.de Boer, B.J.Diana

High-Spin States in 92Tc

NUCLEAR REACTIONS 92Mo(3He, 2np), E=33 MeV; measured Iγ(θγ, t), Eγ, γγ-coin. 92Tc deduced levels, J, π. Shell model analysis.

doi: 10.1016/0375-9474(83)90339-1
Citations: PlumX Metrics

1983JE09      Nucl.Phys. A408, 495 (1983)

B.Jeckelmann, W.Beer, I.Beltrami, F.W.N.De Boer, G.De Chambrier, P.F.A.Goudsmit, J.Kern, H.J.Leisi, W.Ruckstuhl, A.Vacchi

Spectroscopic Quadrupole Moment of 23Na from Muonic X-Rays

NUCLEAR REACTIONS 23Na(μ-, X), E at rest; measured X-ray spectra. 23Na deduced quadrupole moment.

ATOMIC PHYSICS, Mesic-atoms 23Na(μ-, X), E at rest; measured X-ray spectra. 23Na deduced quadrupole moment.

doi: 10.1016/0375-9474(83)90242-7
Citations: PlumX Metrics

1982DE34      Nucl.Phys. A388, 303 (1982)

F.W.N.De Boer, C.A.Fields, L.E.Samuelson, J.Sau

The Level Structure of 90Mo

NUCLEAR REACTIONS 90Zr(3He, 3nγ), E=33-43 MeV; measured Eγ, Iγ(θγ, t), γγ(t), nγ-coin. 90Mo deduced levels, T1/2, J, π. Enriched target, Ge(Li), hyperpure Ge detectors. Shell-model analysis.

doi: 10.1016/0375-9474(82)90418-3
Citations: PlumX Metrics

1982DI09      Z.Phys. A306, 171 (1982)

B.J.Diana, F.W.N.de Boer, C.A.Fields

Gamma-Ray Spectroscopy of 89Nb

NUCLEAR REACTIONS 90Zr(p, 2n), E=18-26 MeV; measured Eγ, Iγ(E), γγ-coin; 89Y(3He, 3n), E=33-43 MeV; measured Eγ, Iγ(E, t), γγ-coin; 90Zr(3He, 3np), E=43 MeV; measured Eγ, Iγ(θ), γγ-coin. 89Nb deduced levels, J, π, T1/2. Enriched Zr targets, Ge(Li), hyperpure Ge detectors. Shell model.

doi: 10.1007/BF01415487
Citations: PlumX Metrics

1982FI02      Nucl.Phys. A377, 217 (1982)

C.A.Fields, F.W.N.De Boer, R.A.Ristinen, P.A.Smith, E.Sugarbaker

A Systematic Investigation of the (α, 2nγ) Reaction on Medium-Heavy Nuclei

NUCLEAR REACTIONS 85Rb, 89Y, 90Zr, 104,106,108,110Pd, 139La, 165Ho, 148Nd, 197Au, 112,118,120,124Sn, 208Pb(α, 2n), E=35 MeV; 110Pd, 148Nd(α, 2n), E=28, 32 MeV; 110Pd, 118,120,124Sn, 148Nd, 197Au(α, 3n), E=35 MeV; 108Pd(α, 2n), 148Nd(α, 3n), E=32 MeV; measured nγ-coin, Iγ, σ(θn), σ(En); deduced neutron decay mechanism, spectrum parameters, entry state spins. Ge(Li), hyperpure Ge and NE224 detectors.

doi: 10.1016/0375-9474(82)90330-X
Citations: PlumX Metrics

1982FI06      Phys.Rev. C26, 290 (1982)

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

Interacting Negative-Parity Bands in 164Er

NUCLEAR REACTIONS 162Dy(α, 2n), E=24 MeV; measured Eγ, Iγ(θ, t), γγ-coin. 164Er deduced levels, J, π, K, configurations, band structure. Band mixing analysis.

doi: 10.1103/PhysRevC.26.290
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1982FI07      Phys.Lett. 114B, 81 (1982)

C.A.Fields, F.W.N.De Boer, R.A.Ristinen, E.Sugarbaker

Breakdown of the Thermal Moving-Source Description of Fast Neutron Production in (α, xn) and (3He, xn) Reactions

NUCLEAR REACTIONS 124Sn, 150Nd(3He, xn), E=33 MeV; 124Sn, 150Nd(α, xn), E=35 MeV; measured inclusive σ(En, θ=30°); 124Sn(3He, xn), E=43 MeV; measured inclusive σ(En, θ=30°), σ(θ); 150Nd(α, xn), E=35 MeV; measured σ(θ). 154Sm(16O, xn), E=152 MeV; 158Gd(α, xn), E=70 MeV; 164Dy(α, xn), E=120 MeV; calculated σ(θ). Thermal moving source model.

doi: 10.1016/0370-2693(82)90119-8
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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
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1982HI04      Phys.Rev. C25, 2710 (1982)

K.H.Hicks, T.E.Ward, J.Wiggins, C.A.Fields, F.W.N.de Boer

Decays of 194,195,196Pb

RADIOACTIVITY 194,195,196Pb [from 197Au(6Li, xn), E=95 MeV]; measured Eγ, Iγ, γγ-coin; deduced log ft. 194,195,196mPb deduced T1/2. 194,195,196Tl deduced levels, J, π, Nilsson configurations. Ge(Li) detectors.

doi: 10.1103/PhysRevC.25.2710
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1982KO03      Nucl.Phys. A373, 397 (1982)

J.Konijn, J.B.R.Berkhout, W.H.A.Hesselink, J.J.Van Ruijven, P.V.Nes, H.Verheul, F.W.N.De Boer, C.A.Fields, E.Sugarbaker, P.M.Walker, R.Bijker

Rotational Bands in 152Sm Observed following the (α, 2nγ) Reaction

NUCLEAR REACTIONS 150Nd(α, 2nγ), E=21-26 MeV; measured Eγ, Iγ, I(ce), γ(θ), γ(t), γγ(t), linear polarization. 152Sm deduced levels, J, π, ICC, T1/2, γ-branching. Enriched targets, Ge(Li), Ge, Si-Li detectors, mini-orange electron spectrometer. Interacting boson model calculations.

doi: 10.1016/0375-9474(82)90542-5
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1982RU06      Phys.Rev.Lett. 49, 859 (1982)

W.Ruckstuhl, B.Aas, W.Beer, I.Beltrami, F.W.N.de Boer, K.Bos, P.F.A.Goudsmit, U.Kiebele, H.J.Leisi, G.Strassner, A.Vacchi, R.Weber

High-Precision Muonic X-Ray Measurement of the rms Charge Radius of 12C with a Crystal Spectrometer

ATOMIC PHYSICS, Mesic-Atoms 12C; measured muonic X-rays. 12C deduced rms charge radius.

doi: 10.1103/PhysRevLett.49.859
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1981FI02      Nucl.Phys. A363, 311 (1981)

C.A.Fields, F.W.N.De Boer, J.J.Kraushaar, R.A.Ristinen, L.E.Samuelson, E.Sugarbaker

High-Spin States in 90Nb

NUCLEAR REACTIONS 89Y(α, 3nγ), E=35 MeV; 90Zr(3He, 2np), E=33-43 MeV; measured Eγ, Iγ(t, θγ), γγ-coin, γγ(t), nγ-coin. 90Nb deduced level, T1/2, J, π. Enriched targets, Ge(Li), hyperpure Ge detectors.

doi: 10.1016/0375-9474(81)90259-1
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1981FI03      Nucl.Phys. A363, 352 (1981)

C.A.Fields, F.W.N.De Boer, E.Sugarbaker, P.M.Walker

A Study of 80,82,84Sr by (α, 2nγ) Reactions

NUCLEAR REACTIONS 78,80,82Kr(α, 2n), E=28 MeV; measured Eγ, Iγ(θ), γγ-coin. 80,82,84Sr deduced levels, J, π. Shell model, interacting boson approximation analysis.

doi: 10.1016/0375-9474(81)90262-1
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1981FI04      Nucl.Phys. A366, 38 (1981)

C.A.Fields, F.W.N.De Boer, D.E.Prull, R.A.Ristinen, L.E.Samuelson, P.A.Smith, E.Sugarbaker

Decay Pathways and Entry-State Population in (α, xnγ) and (3He, xnγ) Reactions on 150Nd

NUCLEAR REACTIONS 150Nd(α, xn), E=28-36 MeV; 150Nd(3He, xn), E=25-43 MeV; measured nγ-, nnγ-, nγγ-coin, σ(E, θ(n), Eγ), Iγ(E(n)); deduced neutron decay pathways and entry state locations in final nuclei. Enriched target. Ge(Li), hyperpure Ge, and NE 224 detectors, tof.

doi: 10.1016/0375-9474(81)90486-3
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1981FI06      Phys.Lett. 106B, 453 (1981)

C.A.Fields, F.W.N.De Boer, R.A.Ristinen, P.A.Smith, E.Sugarbaker

Fast Neutron Emission in (α, 2n) Reactions: A neutron skin effect ( Question )

NUCLEAR REACTIONS 112,118,120,124Sn(α, 2n), E=35 MeV; 108Pd, 150Nd(α, 2n), E=32 MeV; measured σ(En); deduced reaction mechanism, neutron skin effect.

doi: 10.1016/0370-2693(81)90255-0
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1981KO03      Nucl.Phys. A352, 191 (1981)

J.Konijn, F.W.N.De Boer, A.Van Poelgeest, W.H.A.Hesselink, M.J.A.De Voigt, H.Verheul, O.Scholten

The Level Structue of 156Gd Studied by Means of the (α, 2nγ) Reaction

NUCLEAR REACTIONS 154Sm(α, 2n), E=24-32 MeV; measured Eγ, Iγ, E(ce), I(ce), γ(θ), γ(t), γγ-coin. 156Gd deduced levels, J, π, ICC, γ-branching. Enriched targets, Ge(Li) and Si(Li) detectors, mini-orange electron spectrometer. Variable moment of inertia and interacting boson approximation model calculations.

doi: 10.1016/0375-9474(81)90376-6
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1981KO05      Phys.Lett. 99B, 449 (1981)

J.Konijn, J.B.R.Berkhout, W.H.A.Hesselink, H.Verheul, P.M.Walker, F.W.N.De Boer, C.A.Fields, E.Sugarbaker

Intrinsic Structure Effects in the Octupole Bands of 152Sm

NUCLEAR STRUCTURE 152Sm; analyzed level structure; deduced collective octupole bands, K, π, quasiparticle configuration effects.

doi: 10.1016/0370-2693(81)91177-1
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1981RU13      Helv.Phys.Acta 54, 644 (1981)

W.Ruckstuhl, B.Aas, I.Beltrami, K.Bongardt, P.F.A.Goudsmit, H.J.Leisi, G.Strassner, A.Vacchi, F.W.N.De Boer, U.Kiebele, R.Weber

Bestimmung des Ladungsradius von 12C aus einer Messung des Myonischen (2p-1s)-Rontgenubergangs

NUCLEAR MOMENTS 12C; measured muonic X-rays; deduced rms radius. Crystal spectrometer.

1981WA22      Phys.Lett. 104B, 19 (1981)

P.M.Walker, F.W.N.de Boer, C.A.Fields

Band Crossing in 162Dy: Characterisation of negative-parity yrast and yrare sequences

NUCLEAR REACTIONS 160Gd(α, 2n), E=28 MeV; measured I(ce), γγ-coin. 162Dy deduced levels, yrast, yrare sequence, J, π, octupole, two-quasiparticle rotation-aligned band crossing.

doi: 10.1016/0370-2693(81)90845-5
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1980DE34      Phys.Lett. B96, 39 (1980)

F.W.N.de Boer, C.A.Fields, G.Marro, E.Sugarbaker, J.Konijn, H.Verheul, P.M.Walker

Aligned Octupole Bands in Deformed N=90 and N=92 Nuclei

NUCLEAR STRUCTURE 156Dy, 156Gd, 152Sm; analyzed negative parity yrast bands; deduced constant degree of alignment, two-quasiproton configuration of octupole bands.

doi: 10.1016/0370-2693(80)90207-5
Citations: PlumX Metrics

1980DE36      Nucl.Phys. A350, 149 (1980)

F.W.N.De Boer, J.J.Van Ruyven, A.W.B.Kalshoven, H.Verheul, R.Vis, E.Sugarbaker, C.Fields, C.S.Zaidins

The Tetraneutron Revisited

NUCLEAR REACTIONS 130Te(3He, 4n), E=44, 130 MeV; deduced upper limit for process.

RADIOACTIVITY 132Te [from 130Te(4n, 2n)]; measured Eγ, Iγ, Eβ, Iβ. Ge(Li) detector, chemical separations, enriched, natural targets.

doi: 10.1016/0375-9474(80)90393-0
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1980FI02      Nucl.Instrum.Methods 169, 173 (1980)

C.A.Fields, F.W.N.de Boer, R.A.Ristinen, L.E.Samuelson, P.A.Smith

A Method for Determining the Neutron Multiplicity for Gamma Rays from (Particle, xnγ) Reactions

NUCLEAR REACTIONS 104Pd, 120Sn, 150Nd, 165Ho, 208Pb(α, xn), E=35.1 MeV; measured nγ-coin.

doi: 10.1016/0029-554X(80)90117-2
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1980FI06      Z.Phys. A295, 365 (1980)

C.A.Fields, F.W.N.de Boer, J.J.Kraushaar, W.W.Pratt, R.A.Ristinen, L.E.Samuelson

Gamma-Ray Spectroscopy of 87Y

NUCLEAR REACTIONS 88Sr(p, 2n), E=22.8 MeV; 85Rb(α, 2n), E=24.1-36.1 MeV; measured Eγ, Iγ, γγ-, nγ-coin, Iγ(Eα, θγ, t), γ(θ). 87Y deduced levels, J, π, configurations. Natural Sr, enriched Rb targets, Ge(Li), HPGe detectors. Shell model, weak-coupling model.

doi: 10.1007/BF01412950
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1980KA05      Nucl.Phys. A337, 120 (1980)

A.W.B.Kalshoven, F.W.N.de Boer, W.H.A.Hesselink, S.Idzenga, J.Ludziejewski, F.Ottenhof, J.J.van Ruyven, H.Verheul, A.Knipper, G.Marguier, C.Richard-Serre, B.Bergersen, E.Hagebo, O.Scheidemann

Level Structure of 99,101,103Ag Observed in the Decay of Light Cd Isotopes

RADIOACTIVITY 99,101,103Cd [from Sn(p, xn3p)]; measured T1/2, Eγ, Iγ, I(ce), γγ(t). 99,101,103Ag deduced levels, J, π.

NUCLEAR REACTIONS 102,104Pd(p, 2nγ), E=25, 19 MeV; measured γ(θ); deduced ICC. On-line mass separated sources. Ge(Li), Si(Li) detectors.

doi: 10.1016/0375-9474(80)90082-2
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1978BE24      Z.Phys. A286, 215 (1978)

R.Beetz, F.W.N.de Boer, J.K.Panman, J.Konijn, P.Pavlopoulos, G.Tibell, K.Zioutas, I.Bergstrom, K.Fransson, L.Tauscher, P.Blum, R.Guigas, H.Koch, H.Poth, L.M.Simons

High Spin States and Neutron Multiplicities after Pion Capture in 181Ta and 209Bi

NUCLEAR REACTIONS 181Ta, 209Bi(π-, xnγ), E=0 MeV; measured prompt, delayed γ; deduced σ. 194,196,198,200,202,204,206,203,205,207Pb, 202,206,207Tl, 166,168,170,172,174,176,178Hf deduced transitions.

NUCLEAR MOMENTS, Mesic-Atoms 181Ta, 209Bi; measured hyperfine splitting; deduced quadrupole moment.

doi: 10.1007/BF01408978
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1978BE31      Nucl.Phys. A300, 369 (1978)

R.Beetz, F.W.N.de Boer, K.Fransson, J.Konijn, J.K.Panman, L.Tauscher, G.Tibell

Determination of the Effective Quadrupole Moment in 181Ta with Pionic X-Rays

NUCLEAR MOMENTS 181Ta; measured pionic X-rays, hyperfine splitting; deduced quadrupole moment.

doi: 10.1016/0375-9474(78)96138-9
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1978DE02      Z.Phys. A284, 267 (1978)

F.W.N.de Boer, L.K.Peker, P.Koldewijn, J.Konijn

Crossing of Negative Parity Bands in Even-Even Nuclei Around A ≈ 150

NUCLEAR STRUCTURE 150Sm, 152Gd, 154Dy, 156Er; calculated band crossing.

1978KO03      Z.Phys. A284, 233 (1978)

J.Konijn, F.W.N.de Boer, P.Koldewijn, R.Beetz, L.K.Peker

Aligned Rotation of Octupole-Vibrational States in Deformed Nuclei

NUCLEAR STRUCTURE 154Gd, 156Dy, 162Er, 238U; calculated levels. VMI model.

doi: 10.1007/BF01411333
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1978PE01      Z.Phys. A285, 67 (1978)

L.K.Peker, F.W.N.de Boer, J.Konijn

On the Nature of the Superband in 156Dy

NUCLEAR STRUCTURE 156Dy; analyzed band structure.

doi: 10.1007/BF01410226
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1977DE28      Nucl.Phys. A290, 173 (1977)

F.W.N.de Boer, P.Koldewijn, R.Beetz, J.L.Maarleveld, J.Konijn, R.Janssens, J.Vervier

Multipolarities of Prompt Transitions in 156Dy and Spin-Parities of the Upper Band Level

NUCLEAR REACTIONS 156Gd(α, 4n), E=45 MeV; 159Tb(p, 4n), E=44 MeV; measured Eγ, Iγ, E(ce), I(ce). 156Dy deduced levels, J, π, multipolarities, B(E2), B(E1), B(E2)/B(E1) ratios. Enriched, natural targets. Ge(Li), Si(Li) detectors.

doi: 10.1016/0375-9474(77)90673-X
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1977PE14      Z.Phys. A283, 121 (1977)

L.K.Peker, F.W.N.de Boer, J.Konijn

An Anomalous Behaviour of the Gamma Band in 156Dy

NUCLEAR STRUCTURE 156Dy; analyzed data; deduced anomalous behaviour in γ-band.

doi: 10.1007/BF01434072
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1976DE20      Nucl.Phys. A263, 397 (1976)

F.W.N.de Boer, P.F.A.Goudsmit, B.J.Meijer, J.C.Kapteyn, J.Konijn, R.Kamermans

The Four Quasi-Particle 178Hf Isomeric State, its Excitation Energy and Multipolarities of Deexciting Transitions

RADIOACTIVITY 178mHf [from 181Ta(γ, 2np)]; measured Eγ, Iγ, I(ce), γγ-coin, Eγ-coin, Xγ-coin. 178Hf deduced levels, J, π, ICC, g, multipolarities. Ge(Li), Si(Li), intrinsic Ge detectors. Natural targets.

doi: 10.1016/0375-9474(76)90196-2
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1976ME06      Nucl.Phys. A259, 213 (1976)

B.J.Meijer, F.W.N.de Boer, P.F.A.Goudsmit

The Decay of 52 min 167Lu and the Level Scheme of 167Yb

RADIOACTIVITY 167Lu [from 169Tm(3He, 5n), 170Yb(p, 4n)]; measured T1/2, Eγ, Iγ, γγ-coin; deduced Q, log ft. 167Yb deduced levels, J, π, ICC, multipolarities. Compton-suppression spectrometer. Enriched 170Yb targets.

doi: 10.1016/0375-9474(76)90063-4
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1974DE09      Nucl.Phys. A225, 317 (1974); Priv.Comm. (March 1974)

F.W.N.de Boer, P.F.A.Goudsmit, P.Koldewijn, B.J.Meyer

Decay Properties of Three 166Lu Isomers and the Decay of 166Hf

RADIOACTIVITY 166Lu, 166Hf [from 169Tm(3He, 6n), 170Yb(p, 5n)]; measured Eγ, Iγ, I(ce), γγ-coin, Eγ-coin, Xγ delay. 166Yb, 166Lu deduced levels, T1/2, Q-value, J, log ft, π, ICC multipolarities, Ge(Li), Si(Li), NaI(Tl), plastic detectors. Enriched, natural targets.

doi: 10.1016/0375-9474(74)90544-2
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1974DE26      Priv.Comm. (April 1974); See Also 73De22

F.W.N.de Boer

1974DE30      Priv.Comm. (March 1974); See Also 74De09

F.W.N.de Boer

1974DE47      Nucl.Phys. A236, 349 (1974)

F.W.N.de Boer, P.F.A.Goudsmit, B.J.Meijer, P.Koldewijn, J.Konijn, R.Beetz

The Decays of 21.55 min 162gTm and 24.3 s 162Tm (A New Isomer)

RADIOACTIVITY 162Tm, 162mTm [from 165Ho(3He, 6n), 166Er(p, 5n), 164Er(p, 3n)]; measured T1/2, Q, Eγ, Iγ, I(ce), γγ-coin, Eγ-coin. 162Er, 162Tm deduced levels, J, log ft, π, multipolarities. Ge(Li), Si(Li), NaI(Tl) detectors, enriched, natural targets.

doi: 10.1016/0375-9474(74)90260-7
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1974LI11      Nucl.Instrum.Methods 118, 609 (1974)

E.W.A.Lingeman, F.W.N.de Boer, B.J.Meijer

Intensities of γ-Rays in the Decay of 166mHo

RADIOACTIVITY 166mHo; measured Eγ, Iγ.

doi: 10.1016/0029-554X(74)90673-9
Citations: PlumX Metrics

1973DE04      Priv.Comm. (1973)

F.W.N.de Boer, P.F.A.Goudsmit, B.J.Meyer

1973DE22      Z.Phys. 260, 75 (1973)

F.W.N.De Boer, P.F.A.Goudsmit, B.J.Meijer

Re-Investigation of the 166Yb → 166Tm Decay

RADIOACTIVITY 166Yb, 166Tm; measured Eγ, Iγ, γγ(t). 166Yb deduced Q+; 166Tm deduced T1/2 of 82.29 keV level.

doi: 10.1007/BF01398072
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1973JO12      Z.Phys. 262, 247 (1973)

H.W.Jongsma, J.C.de Lange, H.Verheul, F.W.N.de Boer, P.F.A.Goudsmit

The Decay of 65Ge

RADIOACTIVITY 65Ge; measured Eγ, Iγ, T1/2. Deduced log ft, β-branching. 65Ga deduced levels, J, π.

doi: 10.1007/BF01391841
Citations: PlumX Metrics

1973ME09      Nucl.Phys. A204, 636 (1973)

B.J.Meijer, F.W.N.De Boer, P.F.A.Goudsmit

The Decay Properties of 3.25 min 169Hf and 2.05 min 167Hf

RADIOACTIVITY 169Hf, 167Hf [from 170Yb(3He, 4n), 170Yb(3He, 6n)]; measured T1/2, Eγ, Iγ, I(ce); deduced log ft. 169Hf deduced Q+. 169Lu, 167Lu deduced levels, J, π, ICC, multipolarities. Ge(Li), Si(Li) spectrometers. Enriched targets.

doi: 10.1016/0375-9474(73)90400-4
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1973ME25      Radiochim.Acta 19, 150 (1973)

B.J.Meijer, F.W.N.de Boer, P.F.A.Goudsmit

Gamma Rays from 11.8 min 165Lu, a New Isotope

RADIOACTIVITY 165Lu; measured T1/2, Eγ, Iγ. 165Yb deduced transitions.

1972DE40      Radiochim.Acta 18, 60 (1972)

F.W.N.de Boer, E.W.A.Lingeman, B.J.Meijer

Gamma Rays from the New Isotope (3.6 +/- 0.2) min 77Rb

RADIOACTIVITY 77Rb; measured T1/2, Eγ, Iγ.

1972DE54      Radiochim.Acta 17, 116 (1972)

F.W.N.de Boer, P.Koldewijn, J.Konijn, E.W.A.Lingeman

About the Non-Existence of 4.2m 78mRb

RADIOACTIVITY 78Rb, 77mBr; measured Eγ, T1/2.

1972DE57      Radiochim.Acta 17, 218 (1972)

F.W.N.de Boer, P.F.A.Goudsmit, B.J.Meijer

Gamma Rays of the Decay of 11.4 min in 163Yb

1972GO34      Nucl.Phys. A196, 362 (1972)

P.F.A.Goudsmit, F.W.N.de Boer, B.J.Meijer, M.Bogdanovic

The Decay Properties of 19.0 min 162Yb

RADIOACTIVITY 162Yb[from 164Er(3He, 5n), 166Er(3He, 7n)]; measured T1/2, Eγ, Iγ, I(ce), γγ-, ceγ-coin, γγ-delay; deduced log ft. 162Tm deduced levels, J, π, ICC, γ-multipolarity. Ge(Li), Si(Li) detectors.

doi: 10.1016/0375-9474(72)90971-2
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1971DE22      Nucl.Phys. A169, 577 (1971)

F.W.N.de Boer, P.F.A.Goudsmit, P.Koldewijn, B.J.Meijer

The Decay of 5.1 min 164mTm (A New Isomer). The 164Yb(75 min) → 164Tm (2.0 min)→ 164Er Decay Chain

RADIOACTIVITY 164gTm, 164mTm [from 166Er(p, 3n), 166Er(3He, 5n)]; measured Eγ, Iγ, I(ce), Xγ-delay, γγ-coin; deduced log ft. 164Er, 164Tm deduced levels, T1/2, J , π, ICC, multipolarities. Ge(Li), Si(Li), NaI(Tl) spectrometers. Enriched targets.

doi: 10.1016/0375-9474(71)90703-2
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1971LI02      Nucl.Phys. A160, 630 (1971)

E.W.A.Lingeman, F.W.N.de Boer, P.Koldewijn, P.R.Maurenzig

The Decay of 23.0 min 79Rb to Levels in 79Kr

RADIOACTIVITY 79Rb[from 79Br(3He, 3n)]; measured Eγ, Iγ, γγ-coin, βγ-coin, T1/2; deduced log ft, Q+. 79Kr deduced levels, J, π. Ge(Li), Si(Li) detectors, Naton plastic scintillator.

doi: 10.1016/0375-9474(71)90104-7
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1970DE09      Verh.Deut.Phys.Ges. 6, 598 (1970)

F.W.N.de Boer, E.W.A.Lingeman, R.van Lieshout, R.A.Ricci

Re-Examination of the 66Ge Decay

RADIOACTIVITY 66Ge; measured T1/2, Eγ, Iγ, βγ-, γγ-coin, I(ce); deduced Q, log ft. 66Ga deduced levels, J, π, T1/2. Ge(Li), Si(Li) detectors.

1970DE13      Radiochim.Acta 13, 118 (1970)

F.W.N.de Boer, P.F.A.Goudsmit, P.Koldewijn, B.J.Meijer

New Isotopes 158Tm and 160Tm

RADIOACTIVITY 158,160Tm; measured T1/2, Eγ, Iγ, γγ-coin. 158,160Er deduced transition.

1970DE39      Nucl.Phys. A158, 166 (1970)

F.W.N.de Boer, E.W.A.Lingeman, R.van Lieshout, R.A.Ricci

Re-Examination of the 66Ge Decay

RADIOACTIVITY 66Ge[from 66Zn(3He, 3n), 64Zn(3He, n)]; measured Eγ, Iγ, β, T1/2, γγ-coin; deduced log ft, Q+. 66Ga deduced levels, T1/2, J, π, ICC, γ-multipolarity. Natural target, enriched 64Zn target, Ge(Li), Si(Li) detectors.

doi: 10.1016/0375-9474(70)90061-8
Citations: PlumX Metrics

1970GO20      Nucl.Phys. A151, 513 (1970)

P.F.A.Goudsmit, J.Konijn, F.W.N.de Boer

The Decay of 178Re(13.2 min), 177Re(14.0 min) and 176Re(5.7 min)

RADIOACTIVITY 178Re, 177Re, 176Re [from 182W(p, xn), 181Ta(3He, xn)]; measured T1/2, Eγ, Iγ, I(ce), γγ-, β+γ-coin, Eβ+; deduced log ft, Q+. 178W deduced levels, J, π, ICC, γ-multipolarity.

doi: 10.1016/0375-9474(70)90394-5
Citations: PlumX Metrics

1970LI05      Priv.Comm. (1970)

E.W.A.Lingeman, F.W.N.de Boer, R.van Lieshout, P.Koldewijn

1969DE01      Priv.Comm.(April 1969)

F.W.N.De Boer, E.W.A.Lingeman, R.van Lieshout, R.A.Ricci

NUCLEAR STRUCTURE 66Ge; measured not abstracted; deduced nuclear properties.

1969GO02      Priv.Comm.(April 1969)

P.F.A.Goudsmit, J.Konijn, F.W.N.De Boer, K.E.G.Lobner

NUCLEAR STRUCTURE 178Re; measured not abstracted; deduced nuclear properties.

1968KO10      Nucl.Phys. A114, 602 (1968)

J.Konijn, P.F.A.Goudsmit, F.W.N.De Boer, B.J.Meijer

The Decay of 180Os

RADIOACTIVITY 180Os [from 184W(3He, 7n)], measured T1/2, Eγ, Iγ, ICC, Xγ-delay. 180Re deduced levels T1/2, J, π, γ-multipolarity. Enriched 184W target. Detector - Si(Li).

doi: 10.1016/0375-9474(68)90288-1
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1967GO22      Nucl.Phys. A104, 497 (1967)

P.F.A.Goudsmit, J.Konijn, F.W.N.De Boer

A Study of the Decay of 2.5 min 180Re

RADIOACTIVITY 180Re [from 182W(p, 3n)]; measured T1/2, Eγ, Iγ, I(ce), ICC, γγ-coin, γX-, γβ-coin, γγ(θ), Eβ; deduced Q+. 180W deduced levels, T1/2, J, π, delta. Natural target.

doi: 10.1016/0375-9474(67)90467-8
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