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NSR database version of April 11, 2024.

Search: Author = J.C.Bacelar

Found 94 matches.

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2011ME05      Eur.Phys.J. A 47, 59 (2011)

A.A.Mehmandoost-Khajeh-Dad, M.Mahjour-Shafiei, H.R.Amir-Ahmadi, J.C.S.Bacelar, A.M.van den Berg, R.Castelijns, E.D.van Garderen, N.Kalantar-Nayestanaki, M.Kis, H.Lohner, J.G.Messchendorp, H.J.Wortche

Proton-deuteron radiative capture cross-sections at intermediate energies

NUCLEAR REACTIONS 1H(polarized d, 3He), E=110, 133, 180 MeV; measured Eγ, Iγ(θ), E(particle), I(particle, θ), (particle)γ-coin; deduced analyzing powers, σ(θ). Comparison with published calculations using various potentials.

doi: 10.1140/epja/i2011-11059-6
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO1903.


2009MA59      Eur.Phys.J. A 41, 25 (2009)

M.Mahjour-Shafiei, H.R.Amir-Ahmadi, J.C.S.Bacelar, R.Castelijns, K.Ermisch, E.D.van Garderen, I.Gasparic, M.N.Harakeh, N.Kalantar-Nayestanaki, M.Kis, H.Lohner, O.Scholten

Proton-proton bremsstrahlung cross-sections including the kinematical singularity

NUCLEAR REACTIONS 1H(polarized p, p'), E=190 MeV; measured bremsstrahlung σ, σ(θ) and relative energy of the two protons. Comparison with two soft-photon models.

doi: 10.1140/epja/i2009-10786-5
Citations: PlumX Metrics


2006MA03      Phys.Lett. B 632, 480 (2006)

M.Mahjour-Shafiei, H.R.Amir-Ahmadi, J.C.S.Bacelar, R.Castelijns, K.Ermisch, E.D.van Garderen, I.Gasparic, M.N.Harakeh, N.Kalantar-Nayestanaki, M.Kis, H.Lohner, O.Scholten

Proton-proton bremsstrahlung towards the elastic limit at 190 MeV incident beam energy

NUCLEAR REACTIONS 1H(polarized p, p'), E=190 MeV; measured bremsstrahlung σ(θ), vector analyzing power.

doi: 10.1016/j.physletb.2005.10.088
Citations: PlumX Metrics


2006SH16      Pramana 66, 931 (2006)

S.V.Shende, R.Castelijns, J.C.S.Bacelar, H.Lohner, J.Messchendorp, for the CBELSA/TAPS Collaboration

Nucleon resonance decay by the K0Σ+ channel: Preliminary results

NUCLEAR REACTIONS 1,2H(γ, Σ+K0), E ≈ 1.7-2.3 GeV; measured invariant mass spectra; deduced σ, final state interaction effects.

doi: 10.1007/BF02704791
Citations: PlumX Metrics


2005ME09      Phys.Lett. B 617, 18 (2005)

A.A.Mehmandoost-Khajeh-Dad, H.R.Amir-Ahmadi, J.C.S.Bacelar, A.M.van den Berg, R.Castelijns, A.Deltuva, E.D.van Garderen, W.Glockle, J.Golak, N.Kalantar-Nayestanaki, H.Kamada, M.Kis, R.Koohi-Fayegh-Dehkordi, H.Lohner, M.Mahjour-Shafiei, H.Mardanpour, J.G.Messchendorp, A.Nogga, P.Sauer, S.V.Shende, R.Skibinski, H.Witala, H.J.Wortche

Spin observables in deuteron-proton radiative capture at intermediate energies

NUCLEAR REACTIONS 1H(polarized d, γ), E=55, 66.5, 90 MeV/nucleon; measured Eγ, (particle)γ-coin, vector and tensor analyzing powers. Comparison with model predictions.

doi: 10.1016/j.physletb.2005.04.071
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO1289.


2004CA40      Acta Phys.Hung.N.S. 19, 163 (2004)

R.Caplar, J.C.S.Bacelar, R.Castelijns, K.Ermisch, I.Gasparic, M.N.Harakeh, N.Kalantar-Nayestanaki, M.Kis, H.Lohner, M.M.Shafiei

Dilepton and Double-Photon Production in Proton-Proton Scattering at 190 MeV

doi: 10.1556/APH.19.2004.1-2.26
Citations: PlumX Metrics


2004MA71      Phys.Rev. C 70, 024004 (2004)

M.Mahjour-Shafiei, J.C.S.Bacelar, M.D.Cozma, M.J.van Goethem, M.N.Harakeh, M.Hoefman, H.Huisman, N.Kalantar-Nayestanaki, H.Lohner, J.G.Messchendorp, R.W.Ostendorf, S.Schadmand, O.Scholten, M.Volkerts, H.W.Wilschut

High-precision proton-proton bremsstrahlung measurements at 190 MeV

NUCLEAR REACTIONS 1H(polarized p, p), (polarized p, p'γ), E=190 MeV; measured σ(θ), Ay(θ). Comparison with model predictions.

doi: 10.1103/PhysRevC.70.024004
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO1226.


2004MU23      Eur.Phys.J. A 21, 273 (2004)

B.Mukherjee, J.C.S.Bacelar, J.P.M.Beijers, M.N.Harakeh, N.Kalantar-Nayestanaki, M.Kis, H.Lohner, M.Mahjour-Shafiei, P.Henrotte

A study of proton-induced reactions at 190 MeV

NUCLEAR REACTIONS 56Fe, 208Pb, 238U(p, p'X), E=190 MeV; measured σ(θ), proton multiplicities. Comparison with optical model and intra-nuclear cascade model predictions.

doi: 10.1140/epja/i2003-10215-y
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO1086.


2004VO07      Phys.Rev.Lett. 92, 202301 (2004)

M.Volkerts, J.C.S.Bacelar, M.J.van Goethem, M.N.Harakeh, M.Hoefman, H.Huisman, N.Kalantar-Nayestanaki, S.Kopecky, H.Lohner, J.G.Messchendorp, K.Nakayama, R.W.Ostendorf, S.Schadmand, O.Scholten, H.W.Wilschut

Exclusive Measurement of Quasifree Proton-Neutron Bremsstrahlung

NUCLEAR REACTIONS 2H(p, np), E=190 MeV; measured En, Ep, bremsstrahlung Eγ, σ(E, θ); deduced proton-neutron bremsstrahlung features.

doi: 10.1103/PhysRevLett.92.202301
Citations: PlumX Metrics


2003CA46      Fizika(Zagreb) B 12, 81 (2003)

R.Caplar, J.C.S.Bacelar, R.Castelijns, K.Ermisch, I.Gasparic, M.N.Harakeh, N.Kalantar-Nayestanaki, M.Kis, H.Lohner, M.M.Shafiei

High-statistics measurement of double-photon and dilepton production in the proton-proton scattering at 190 MeV

NUCLEAR REACTIONS 1H(p, p'), E=190 MeV; measured Eγ, Iγ, γγ-coin, dilepton yields.


2003VO04      Phys.Rev.Lett. 90, 062301 (2003)

M.Volkerts, J.C.S.Bacelar, M.J.van Goethem, M.N.Harakeh, M.Hoefman, H.Huisman, N.Kalantar-Nayestanaki, H.Lohner, J.G.Messchendorp, R.W.Ostendorf, S.Schadmand, O.Scholten, H.W.Wilschut, R.S.Simon, V.Wagner

Exclusive Measurement of Coherent Proton-Deuteron Bremsstrahlung

NUCLEAR REACTIONS 2H(polarized p, p'γ), E=190 MeV; measured Ep, Ed, bremsstrahlung Eγ, Iγ, σ(θ), Ay(θ). Comparison with model predictions.

doi: 10.1103/PhysRevLett.90.062301
Citations: PlumX Metrics


2002BA41      Acta Phys.Pol. B33, 805 (2002)

J.C.S.Bacelar

Real and Virtual Bremsstrahlung in Few-Body Systems

NUCLEAR REACTIONS 1H(polarized p, p'γ), (polarized p, p'ee+), E=190 MeV; 2H(polarized p, γ), E=190 MeV; measured σ(θ) for real and virtual bremsstrahlung. Comparison with model predictions.


2002HU04      Phys.Rev. C65, 031001 (2002)

H.Huisman, J.C.S.Bacelar, M.J.van Goethem, M.N.Harakeh, M.Hoefman, N.Kalantar-Nayestanaki, H.Lohner, M.Mahjour-Shafiei, J.G.Messchendorp, R.W.Ostendorf, S.Schadmand, M.Volkerts, H.W.Wilschut, R.S.Simon

Photon Angular Distribution of Proton-Proton Bremsstrahlung at 190 MeV

NUCLEAR REACTIONS 1H(polarized p, p'γ), E=190 MeV; measured Eγ, Iγ(θ), σ(θ), Ay(θ), ppγ-coin. Comparison with model predictions.

doi: 10.1103/PhysRevC.65.031001
Citations: PlumX Metrics


2002VA08      Phys.Rev.Lett. 88, 122302 (2002)

M.J.van Goethem, L.Aphecetche, J.C.S.Bacelar, H.Delagrange, J.Diaz, D.d'Enterria, M.Hoefman, R.Holzmann, H.Huisman, N.Kalantar-Nayestanaki, A.Kugler, H.Lohner, G.Martinez, J.G.Messchendorp, R.W.Ostendorf, S.Schadmand, R.H.Siemssen, R.S.Simon, Y.Schutz, R.Turrisi, M.Volkerts, V.Wagner, H.W.Wilschut

Suppression of Soft Nuclear Bremsstrahlung in Proton-Nucleus Collisions

NUCLEAR REACTIONS C, Ni, Ag, Au(p, X), E=190 MeV; measured Eγ; deduced suppression of bremsstrahlung, role of multiple scattering.

doi: 10.1103/PhysRevLett.88.122302
Citations: PlumX Metrics


2001BA36      Nucl.Phys. A684, 505c (2001)

J.C.S.Bacelar

Experimental Studies of the Dilepton Emission from Nucleon-Nucleon Interactions below Pion Production Threshold

doi: 10.1016/S0375-9474(01)00478-X
Citations: PlumX Metrics


2001BA62      Nucl.Phys. A689, 104c (2001)

J.C.S.Bacelar

Experimental Studies of the Dilepton Emission from Nucleon-Nucleon Interactions below Pion Production Threshold

doi: 10.1016/S0375-9474(01)00824-7
Citations: PlumX Metrics


2001UR02      Acta Phys.Pol. B32, 2527 (2001)

W.Urban, J.C.Bacelar, J.Nyberg

Fast Nuclear Rotation and Octupole Deformation

NUCLEAR REACTIONS 136Xe(18O, 4n), E=76 MeV; measured Eγ, Iγ, γγ-coin. 150Sm deduced high-spin levels, J, π, configurations, B(E1)/B(E2), octupole deformation. Nordball array.


2001VO06      Nucl.Phys. A684, 510c (2001)

M.Volkerts, J.C.S.Bacelar, M.J.van Goethem, M.N.Harakeh, M.Hoefman, H.Huisman, N.Kalantar-Nayestanaki, H.Lohner, J.G.Messchendorp, R.W.Ostendorf, S.Schadmand, R.S.Simon, V.Wagner, H.W.Wilschut

Proton-Deuteron Bremsstrahlung at 190 MeV

NUCLEAR REACTIONS 2H(p, γ), (p, p'γ), (p, npγ), E=190 MeV; measured σ(θ). Comparison with model predictions.

doi: 10.1016/S0375-9474(01)00479-1
Citations: PlumX Metrics


2000HO18      Phys.Rev.Lett. 85, 1404 (2000)

M.Hoefman, L.Aphecetche, J.C.S.Bacelar, H.Delagrange, P.Descouvemont, J.Diaz, D.d'Enterria, M.-J.van Goethem, R.Holzmann, H.Huisman, N.Kalantar-Nayestanaki, A.Kugler, H.Lohner, F.M.Marques, G.Martinez, J.G.Messchendorp, R.W.Ostendorf, S.Schadmand, R.H.Siemssen, R.S.Simon, Y.Schutz, R.Timmermans, R.Turrisi, M.Volkerts, mV.Wagner, H.Weller, H.W.Wilschut, E.Wulf

Coherent Bremsstrahlung in the α + p System at 50 MeV/nucleon

NUCLEAR REACTIONS 1H(α, X), E=200 MeV; measured Eγ, Iγ, bremsstrahlung σ(Eγ), γ(particle)-coin, coherent bremsstrahlung spectrum. 5Li deduced resonances energies, widths, σ. Comparison with direct capture calculations.

doi: 10.1103/PhysRevLett.85.1404
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2000HU03      Phys.Lett. 476B, 9 (2000)

H.Huisman, J.C.S.Bacelar, M.J.Van Goethem, M.N.Harakeh, M.Hoefman, N.Kalantar-Nayestanaki, H.Lohner, J.G.Messchendorp, R.W.Ostendorf, S.Schadmand, O.Scholten, R.S.Simon, R.G.E.Timmermans, M.Volkerts, H.W.Wilschut

Dynamical Effects in Proton-Proton Bremsstrahlung for Non-Coplanar Geometries

NUCLEAR REACTIONS 1H(polarized p, pγ), E=190 MeV; measured σ(θ), analyzing power. Two-arm photon spectrometer, comparisons with model predictions.

doi: 10.1016/S0370-2693(00)00130-1
Citations: PlumX Metrics


2000ME14      Phys.Lett. 481B, 171 (2000)

J.G.Messchendorp, J.C.S.Bacelar, M.J.van Goethem, M.N.Harakeh, M.Hoefman, H.Huisman, N.Kalantar-Nayestanaki, A.Yu.Korchin, H.Lohner, R.W.Ostendorf, S.Schadmand, O.Scholten, M.Volkerts, H.W.Wilschut, R.S.Simon

Cross Sections and Electromagnetic Response Functions for Radiative Proton Capture in pd → 3He + e+e-

NUCLEAR REACTIONS 2H(p, ee+), (p, γ), E=190 MeV; measured σ(θ); deduced electromagnetic response functions, possible role of Δ resonance. Comparison with model predictions.

doi: 10.1016/S0370-2693(00)00441-X
Citations: PlumX Metrics


2000ME18      Phys.Rev. C61, 064007 (2000)

J.G.Messchendorp, J.C.S.Bacelar, M.J.van Goethem, M.N.Harakeh, M.Hoefman, H.Huisman, N.Kalantar-Nayestanaki, H.Lohner, R.W.Ostendorf, S.Schadmand, R.Turrisi, M.Volkerts, H.W.Wilschut, R.S.Simon

Virtual Bremsstrahlung in Proton-Proton Scattering below the Pion-Production Threshold

NUCLEAR REACTIONS 1H(polarized p, p'ee+), E=190 MeV; measured σ(E, θ); deduced response functions, integrated σ. Two-arm photon spectrometer. Comparisons with model predictions.

doi: 10.1103/PhysRevC.61.064007
Citations: PlumX Metrics


1999BA46      Nucl.Phys. A649, 157c (1999)

J.C.S.Bacelar

Dilepton Decay of Giant Resonances Built on Excited Nuclei

NUCLEAR REACTIONS 25Mg(3He, X), 24Mg(α, X), 12C(16O, X), E*=50 MeV; 40Ca(16O, X), E*=70 MeV; measured dilepton yields, spectra. 28Si, 56Ni deduced giant monopole resonance strength upper limits. Positron-electron pair spectrometer.

doi: 10.1016/S0375-9474(99)00054-8
Citations: PlumX Metrics


1999CS04      Nucl.Instrum.Methods Phys.Res. A421, 272 (1999)

M.Csatlos, A.Krasznahorkay, J.C.S.Bacelar, A.Balanda, W.Przygoda, S.Schadmand, M.J.A.de Voigt

Energy Response of a Novel Compact Ge + BGO Spectrometer for 4-20 MeV γ-Rays

NUCLEAR REACTIONS 12C(p, p'), E=20 MeV; measured Eγ, Iγ. Comparison with Monte Carlo simulations.

doi: 10.1016/S0168-9002(98)01210-8
Citations: PlumX Metrics


1999HU15      Phys.Rev.Lett. 83, 4017 (1999)

H.Huisman, J.C.S.Bacelar, M.J.van Goethem, M.N.Harakeh, M.Hoefman, N.Kalantar-Nayestanaki, H.Lohner, J.G.Messchendorp, R.W.Ostendorf, S.Schadmand, O.Scholten, R.G.E.Timmermans, R.Turrisi, M.Volkerts, H.W.Wilschut, R.S.Simon, A.Kugler, V.Wagner

High-Precision Proton-Proton Bremsstrahlung Measurements below the Pion-Production Threshold

NUCLEAR REACTIONS 1H(polarized p, pγ), E=190 MeV; measured σ(θ), analyzing powers in coplanar kinematics. Comparison with calculations.

doi: 10.1103/PhysRevLett.83.4017
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1999HU21      Nucl.Phys. (Supplement) A654, 949c (1999)

H.Huisman, J.C.S.Bacelar, M.J.van Goethem, M.N.Harakeh, M.Hoefman, N.Kalantar-Nayestanaki, A.Kugler, H.Lohner, J.G.Messchendorp, R.W.Ostendorf, S.Schadmand, R.Simon, R.Turrisi, M.Volkerts, V.Wagner, H.W.Wilschut, A.van der Woude

Probing Few-Body Systems with Bremsstrahlung

NUCLEAR REACTIONS 1H(polarized p, p'γ), (polarized p, p'ee+), E=190 MeV; measured Ep, σ(θ), Ay(θ).

doi: 10.1016/S0375-9474(00)88579-6
Citations: PlumX Metrics


1999ME05      Phys.Rev.Lett. 82, 2649 (1999)

J.G.Messchendorp, J.C.S.Bacelar, M.J.van Goethem, M.N.Harakeh, M.Hoefman, H.Huisman, N.Kalantar-Nayestanaki, H.Lohner, R.W.Ostendorf, S.Schadmand, R.Turrisi, M.Volkerts, H.W.Wilschut, R.S.Simon, A.Kugler, V.Wagner

Exclusive Measurements of Virtual Bremsstrahlung in Proton-Proton Scattering at 190 MeV

NUCLEAR REACTIONS 1H(polarized p, p'ee+), E=190 MeV; measured virtual photon σ(θ), invariant mass; deduced total σ. Comparison with model predictions.

doi: 10.1103/PhysRevLett.82.2649
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1999ME22      Phys.Rev.Lett. 83, 2530 (1999)

J.G.Messchendorp, J.C.S.Bacelar, M.J.van Goethem, M.N.Harakeh, M.Hoefman, H.Huisman, N.Kalantar-Nayestanaki, H.Lohner, R.W.Ostendorf, S.Schadmand, O.Scholten, M.Volkerts, H.W.Wilschut, R.S.Simon

First Determination of the Nucleon-Nucleon Response Functions in the Timelike Region

NUCLEAR REACTIONS 1H(polarized p, p'ee+), E=190 MeV; measured σ(θ); deduced average transverse, longitudinal response functions. Comparison with model predictions.

doi: 10.1103/PhysRevLett.83.2530
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1998ME09      Nucl.Phys. A631, 618c (1998)

J.G.Messchendorp, J.C.S.Bacelar, J.A.Fulop, M.J.van Goethem, M.N.Harakeh, M.Hoefman, H.Huisman, N.Kalantar-Nayestanaki, H.Lohner, R.W.Ostendorf, S.Schadmand, R.Turrisi, M.Volkerts, H.W.Wilschut, A.van der Woude, R.Holzmann, R.Simon, A.Kugler, K.Tcherkashenko, V.Wagner

Measurements of the Virtual Bremsstrahlung Yields in the p + p System

NUCLEAR REACTIONS 1H(polarized p, p'ee+), E=190 MeV; measured σ(E, θ); deduced transverse response. Low-Energy Theorem calculations.

doi: 10.1016/S0375-9474(98)00078-5
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1998VA21      Nucl.Phys. A638, 613 (1998)

G.van't Hof, J.C.S.Bacelar, I.Dioszegi, M.N.Harakeh, W.H.A.Hesselink, N.Kalantar-Nayestanaki, A.Kugler, H.van der Ploeg, A.J.M.Plompen, J.P.S.van Schagen

Viscosity, Fission Time Scale and Deformation of 156Dy

NUCLEAR REACTIONS 116Cd(40Ar, X), E=216, 238 MeV; measured Eγ, Iγ, (fragment)γ-coin; deduced fusion-fission time scale, compound nucleus features, GDR parameters. Statistical model calculations.

doi: 10.1016/S0375-9474(98)00230-9
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1997BU02      Phys.Rev. C55, 504 (1997)

A.Buda, J.C.Bacelar, S.R.Banerjee, H.Ching, D.J.Hofman, P.Paul, S.Schadmand, A.van der Woude

Dilepton and Photon Decay of Giant Resonances Built on Excited States of 56Ni

NUCLEAR REACTIONS 40Ca(16O, γ), (16O, X), E=82 MeV; measured γ-, pair-production σ. 56Ni deduced isospin mixing, giant resonance photon, dilepton decay parameters.

doi: 10.1103/PhysRevC.55.504
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1996BU01      Phys.Rev. C53, 157 (1996)

A.Buda, J.C.Bacelar, A.Balanda, A.Krasznahorkay, H.van der Ploeg, Z.Sujkowski, A.van der Woude

Dilepton Decay from Excited States in 28Si Populated Via Isospin Entrance Channels

NUCLEAR REACTIONS 24Mg(α, X), E=48 MeV; 25Mg(3He, X), E=31 MeV; measured (e+e-)-, γ yields, Eγ, Iγ. 28Si deduced giant resonance parameters. Statistical decay analysis.

doi: 10.1103/PhysRevC.53.157
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1996IA01      Nucl.Phys. A596, 155 (1996)

V.E.Iacob, W.Urban, J.C.Bacelar, J.Jongman, J.Nyberg, G.Sletten, L.Trache

Reflection Asymmetric States in 146Nd

NUCLEAR REACTIONS 136Xe(13C, 3n), E=54 MeV; measured Eγ, γ-multiplicaties, γγ(t), DCO-ratio. 146Nd deduced high-spin levels, J, π, B(λ) ratios, γ multipolarity, band structure. NORDBALL multi-Ge detector array, BaF2 multiplicity filter.

doi: 10.1016/0375-9474(95)00383-5
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1996UR01      Phys.Rev. C53, 2516 (1996)

W.Urban, J.C.Bacelar, J.Jongman, W.Gast, G.Hebbinghaus, A.Kramer-Flecken, R.M.Lieder, M.Thoms, O.Zell

Octupole Excitations in the N = 85 Lanthanides

NUCLEAR REACTIONS 148Nd(α, 5n), E=68 MeV; 138Ba(13C, 4n), E=55 MeV; 136Xe(13C, 4n), E=55 MeV; measured γγ-coin. 145Nd, 147Sm deduced high-spin levels, J, π, double octupole-phonon states.

doi: 10.1103/PhysRevC.53.2516
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1996UR03      Phys.Rev. C54, 2264 (1996)

W.Urban, T.Rzaca-Urban, J.L.Durell, Ch.P.Hess, C.J.Pearson, W.R.Phillips, B.J.Varley, W.J.Vermeer, Ch.Vieu, J.S.Dionisio, M.Pautrat, J.C.Bacelar

Excited Levels in 145Pm

NUCLEAR REACTIONS 134Xe(15N, 4n), E=78 MeV; measured Eγ, Iγ, γγ(θ), linear polarization. 146Nd(d, 3n), E=18 MeV; measured γγ-, (electron)γ-coin. 145Pm deduced high-spin levels, J, π, single-particle configurations, ICC, γ-multipolarity.

doi: 10.1103/PhysRevC.54.2264
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1996VA05      Nucl.Phys. A599, 17c (1996)

G.van't Hof, J.C.S.Bacelar, I.Dioszegi, M.N.Harakeh, W.H.A.Hesselink, N.Kalantar-Nayestanaki, A.Kugler, H.van der Ploeg, A.J.M.Plompen, J.P.S.van Schagen

Viscosity and Fission Time Scale of 156Dy at High Excitation Energies and Large Angular Momenta

NUCLEAR REACTIONS 116Cd(40Ar, F), E=216, 238 MeV; measured fission (fragment)γ-coin. 156Dy deduced fission time scale, viscosity. Statistical model.

doi: 10.1016/0375-9474(96)00043-7
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1996VA06      Nucl.Phys. A599, 117c (1996)

H.van der Ploeg, J.C.S.Bacelar, A.Buda, I.Dioszegi, G.van't Hof, A.van der Woude

Dynamical Fission Life-Times Deduced from γ-Ray Emission Observed in the Fusion-Fission Reaction: 20Ne on 209Bi

NUCLEAR REACTIONS 209Bi(20Ne, X), E=150-220 MeV; measured γ spectra, Iγ(θ); deduced fusion-fission-reaction features, dynamical fission T1/2.

doi: 10.1016/0375-9474(96)00053-X
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1996VA16      Phys.Rev. C54, 1515 (1996)

G.van't Hof, W.H.A.Hesselink, A.J.M.Plompen, J.P.S.van Schagen, M.N.Harakeh, N.Kalantar-Nayestanaki, J.C.S.Bacelar, H.van der Ploeg, I.Dioszegi, A.Kugler

Viscosity and Fission Time Scale of 156Dy

NUCLEAR REACTIONS 116Cd(40Ar, F), E=216, 238 MeV; measured fission (fragment)γ-coin; deduced viscosity parameter, fission time scales. Cascade model.

doi: 10.1103/PhysRevC.54.1515
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1995BU29      Phys.Rev.Lett. 75, 798 (1995)

A.Buda, J.C.Bacelar, A.Balanda, Z.Sujkowski, A.van der Woude, R.Bersch, H.Ching, I.Dioszegi, D.J.Hofman, P.Paul, S.Schadmand, R.Varma

Dilepton Decay of Giant Resonances Built on Excited States of 28Si

NUCLEAR REACTIONS 12C(16O, X), E=82 MeV; measured dilepton, photon yields; deduced dilepton production σ. 28Si deduced giant resonance strength function parameters.

doi: 10.1103/PhysRevLett.75.798
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1995JO04      Nucl.Phys. A581, 165 (1995)

J.R.Jongman, J.C.S.Bacelar, A.Balanda, R.F.Noorman, Th.Steenbergen, W.Urban, M.J.A.de Voigt, J.Nyberg, G.Sletten, J.Dionisio, Ch.Vieu, J.M.Lagrange, M.Pautrat

High-Spin States in 148Eu

NUCLEAR REACTIONS 139La(13C, 4n), E=61 MeV; measured Eγ, γ-multiplicity, γγ(t), DCO-ratios, γ linear polarization, I(ce), σ(Eγ). 148Eu deduced high-spin levels, J, π, ICC, configuration. NORDBALL multi-Ge detector array, BaF2 multiplicity filter.

doi: 10.1016/0375-9474(94)00426-N
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1995JO18      Nucl.Phys. A591, 244 (1995)

J.R.Jongman, W.Urban, J.C.S.Bacelar, J.van Pol, J.Nyberg, G.Sletten, J.S.Dionisio, Ch.Vieu, J.M.Lagrange, M.Pautrat

Study of High-Spin States in 150Eu and 151Eu

NUCLEAR REACTIONS 136Xe(19F, 4n), (19F, 5n), E=78, 85 MeV; 148Nd(7Li, 4n), (7Li, 5n), E=40, 50 MeV; measured Eγ, γ-multiplicity, γγ(t), eγ(t), DCO-ratios. 151,150Eu deduced high-spin levels, J, π, ICC. Nordball multi-Ge-detector array, BaF2-multiplicity filter, cryo-target, eγ-spectrometer, isotopically enriched targets.

doi: 10.1016/0375-9474(95)00207-H
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1995RZ02      Nucl.Phys. A588, 767 (1995)

T.Rzaca-Urban, W.Urban, J.L.Durell, W.R.Phillips, B.J.Varley, Ch.P.Hess, C.J.Pearson, W.J.Vermeer, Ch.Vieu, J.S.Dionisio, M.Pautrat, J.C.Bacelar

Study of the High-Spin Structure of 146Pm

NUCLEAR REACTIONS 136Xe(15N, 5n), E=78 MeV; 146Nd(d, 2n), E=18 MeV; measured γγ(t), DCO ratios, Iγ, (e)(γ)-coin. 146Pm deduced levels, J, π, ICC, Iγ, branchings. Solid 136Xe target. Shell-model calculations.

doi: 10.1016/0375-9474(95)00065-9
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1995UR01      Nucl.Phys. A587, 541 (1995)

W.Urban, J.L.Durell, W.R.Phillips, B.J.Varley, Ch.P.Hess, M.A.Jones, C.J.Pearson, W.J.Vermeer, Ch.Vieu, J.S.Dionisio, M.Pautrat, J.C.Bacelar

Study of Excited Levels in 147Pm

NUCLEAR REACTIONS 136Xe(15N, 4n), E=78 MeV; 148Nd(d, 3n), E=18 MeV; measured γγ(t), DCO ratios, Iγ, Eγ. 147Pm deduced levels, J, π, T1/2, ICC, Iγ, branching, configurations, octupole deformation.

doi: 10.1016/0375-9474(95)00018-V
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1995VA07      Phys.Lett. 343B, 64 (1995)

J.P.S.van Schagen, Y.Alhassid, J.C.S.Bacelar, B.Bush, M.N.Harakeh, W.H.A.Hesselink, H.J.Hofmann, N.Kalantar-Nayestanaki, R.F.Noorman, A.J.M.Plompen, A.Stolk, Z.Sujkowski, A.van der Woude

GDR γ-Ray Decay in 156Dy(*) from Regions Selected on Temperature and Angular Momentum

NUCLEAR REACTIONS 116Cd(40Ar, X), E=200 MeV; 114Cd(40Ar, X), E=173 MeV; measured γ difference spectra. 156,154Dy GDR γ-decay features from restricted temperature, angular momentum regions.

doi: 10.1016/0370-2693(94)01467-Q
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1995VA09      Phys.Rev.Lett. 74, 3082 (1995)

H.van der Ploeg, R.Postma, J.C.S.Bacelar, T.van den Berg, V.E.Iacob, J.R.Jongman, A.van der Woude

van der Ploeg et al. Reply:

RADIOACTIVITY 252Cf(SF); analyzed γ anisotropy; deduced neutron pileup role.

doi: 10.1103/PhysRevLett.74.3082
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1995VA24      Phys.Rev. C52, 1915 (1995)

H.van der Ploeg, J.C.S.Bacelar, A.Buda, C.R.Laurens, A.van der Woude, J.J.Gaardhoje, Z.Zelazny, G.van't Hof, N.Kalantar-Nayestanaki

Emission of Photons in Spontaneous Fission of 252Cf

RADIOACTIVITY 252Cf(SF); measured fission fragment masses, σ(θ), neutron multiplicities, γ-anisotropy; deduced mass dependence of Eγ, effective level density parameters, anisotropy of Eγ with fission axis. Statistical code reproduction of data.

doi: 10.1103/PhysRevC.52.1915
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1994BA21      Nucl.Phys. A569, 101c (1994)

J.C.Bacelar, A.Buda, A.Balanda, A.Krasznahorkay, H.van der Ploeg, Z.Sujkowski, A.van der Woude

Di-Lepton Yield from the Decay of Excited 28Si States

NUCLEAR REACTIONS 24Mg(α, X), E=48 MeV; 25Mg(3He, X), E=31 MeV; measured dilepton (e+, e-), photon yields. 28Si deduced isoscalar E0 transition strength distribution.

doi: 10.1016/0375-9474(94)90100-7
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1994BA45      Nucl.Phys. A575, 348 (1994)

A.Balanda, J.C.S.Bacelar, E.Betak, J.A.Bordewijk, A.Krasznahorkay, H.van der Ploeg, R.H.Siemssen, H.W.Wilschut, A.van der Woude

Photons in the Proton-Induced Reaction with In at E(p) = 50 MeV

NUCLEAR REACTIONS, ICPND 115In(p, γ), E-50 MeV; measured inclusive γ spectra, γ-yield; deduced hard γ-emission probability per pn-collision. 116Sn deduced GDR parameters. Compound, preequilibrium model analysis.

doi: 10.1016/0375-9474(94)90194-5
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1994BR09      Nucl.Phys. A571, 337 (1994)

A.Brockstedt, J.Lyttkens-Linden, M.Bergstrom, L.P.Ekstrom, H.Ryde, J.C.Bacelar, J.D.Garrett, G.B.Hagemann, B.Herskind, F.R.May, P.O.Tjom, S.Frauendorf

Interpretation of Bands in 163Er within the Tilted Rotation Scheme Enchanced E1 Decay Strength

NUCLEAR REACTIONS 150Nd(18O, 5n), E=83 MeV; measured Eγ, γγ-coin, Iγ. 163Er deduced levels, J, π, B(M1)/B(E2), B(E1), high-K, multi-quasiparticle states. Tilted cranking calculations.

doi: 10.1016/0375-9474(94)90065-5
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1994HO05      Nucl.Phys. A571, 301 (1994)

H.J.Hofmann, J.C.Bacelar, M.N.Harakeh, T.D.Poelhekken, A.van der Woude

Saturation of the Width of the Giant Dipole Resonance at High Excitation Energies

NUCLEAR REACTIONS 118Sn(16O, X), E=200, 280 MeV; measured exclusive, inclusive Eγ, Iγ, σ(Eγ). 134Ce deduced parameters of GDR based on excited states. Comparison with existing data.

doi: 10.1016/0375-9474(94)90063-9
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1994JO09      Phys.Rev. C50, 3159 (1994)

J.R.Jongman, J.C.S.Bacelar, W.Urban, R.F.Noorman, J.van Pol, Th.Steenbergen, M.J.A.de Voigt, J.Nyberg, G.Sletten, J.Dionisio, Ch.Vieu

Octupole Correlations in the Odd-Z Nuclei 148-151Eu

NUCLEAR STRUCTURE 148,149,150,151Eu; analyzed high-spin levels, B(λ) data; deduced octupole correlations evidence, strength.

doi: 10.1103/PhysRevC.50.3159
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1994NO07      Nucl.Phys. A574, 501 (1994)

R.F.Noorman, J.C.Bacelar, M.N.Harakeh, W.H.A.Hesselink, H.J.Hofmann, N.Kalantar-Nayestanaki, J.P.S.van Schagen, A.Stolk, Z.Sujkowski, M.J.A.de Voigt, A.van der Woude

The Angular-Momentum Dependence of the Giant Dipole Resonance in 154Dy(*)

NUCLEAR REACTIONS 114Cd(40Ar, xn), E=173 MeV; measured Eγ, γ-multiplicity, γγ(t). 154Dy deduced GDR strength function features.

doi: 10.1016/0375-9474(94)90242-9
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1994UR01      Nucl.Phys. A578, 204 (1994)

W.Urban, J.C.Bacelar, J.R.Jongman, R.F.Noorman, M.J.A.de Voigt, J.Nyberg, G.Sletten, M.Bergstrom, H.Ryde

Study of High-Spin States in the Nucleus 149Eu

NUCLEAR REACTIONS 139La(13C, 3n), E=58 MeV; measured Eγ, Iγ, γγ(t), DCO-ratios, γ linear polarization, σ(Eγ). 149Eu deduced high-spin levels, J, π, γ multipolarity. NORDBALL multi-Ge detector array, BaF2 multiplicity filter.

doi: 10.1016/0375-9474(94)90976-8
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1994VA05      Nucl.Phys. A569, 83c (1994)

H.van der Ploeg, C.R.Laurens, J.C.S.Bacelar, A.Buda, J.J.Gaardhoje, G.van't Hof, N.Kalantar-Nayestanaki, A.van der Woude, Z.Zelazny

Study of the Gamma Emission Probability Accompanying the Spontaneous Fission of 252Cf

RADIOACTIVITY 252Cf(SF); measured γ-yield following SF-decay, fission (fragment)γ(θ); deduced photon emission probability vs excitation.

doi: 10.1016/0375-9474(94)90098-1
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1993BR10      Nucl.Phys. A557, 469c (1993)

A.Brockstedt, J.Lyttkens-Linden, M.Bergstrom, L.P.Ekstrom, H.Ryde, J.C.Bacelar, S.Frauendorf, J.D.Garrett, G.B.Hagemann, B.Herskind, F.R.May, P.O.Tjom

Interpretation of Bands in 163Er within the Tilted Rotation Scheme

NUCLEAR REACTIONS 150Nd(18O, 5n), E=83 MeV; measured γγ-coin. 163Er deduced levels, J, π, band structure, K, configuration. Tilted rotation scheme interpretation.

doi: 10.1016/0375-9474(93)90563-D
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1993BU07      Nucl.Phys. A553, 509c (1993)

A.Buda, J.C.Bacelar, A.Balanda, H.van der Ploeg, Z.Sujkowski, A.van der Woude

Positron-Electron Decay of 28Si at an Excitation Energy of 50 MeV

NUCLEAR REACTIONS 24Mg(α, X), E=48 MeV; 25Mg(3He, X), E=31 MeV; measured γ, e+e--pair spectra. 28Si deduced pair decay branch from GDR region.

doi: 10.1016/0375-9474(93)90649-I
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1993BU23      Nucl.Instrum.Methods Phys.Res. A335, 479 (1993)

A.Buda, J.C.S.Bacelar, A.Balanda, J.van Klinken, Z.Sujkowski, A.van der Woude

A 4π Dilepton Spectrometer: PEPSI

NUCLEAR REACTIONS 12C(p, p'), E=20 MeV; measured pair, γ-spectra. 12C transition deduced internal pair conversion coefficient. New 4π dilepton spectrometer.

doi: 10.1016/0168-9002(93)91233-D
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1993NE01      Z.Phys. A344, 235 (1993)

M.Neffgen, E.M.Beck, H.Hubel, J.C.Bacelar, M.A.Deleplanque, R.M.Diamond, F.S.Stephens, J.E.Draper

High-Spin States in 165Hf

NUCLEAR REACTIONS 130Te(40Ca, 5n), E=195 MeV; measured γγ-coin, Eγ, Iγ. 165Hf deduced levels, J, π, band structure. Cranked shell model.

doi: 10.1007/BF01303016
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1993VA06      Phys.Lett. 308B, 231 (1993)

J.P.S.van Schagen, Y.Alhassid, J.C.Bacelar, B.Bush, M.N.Harakeh, W.H.A.Hesselink, H.J.Hofmann, N.Kalantar-Nayestanaki, R.F.Noorman, A.J.M.Plompen, A.Stolk, Z.Sujkowski, A.van der Woude

GDR Dissipation and Nuclear Shape in Hot Fast-Rotating Dy Nuclei

NUCLEAR REACTIONS 116Cd(40Ar, X), E=200 MeV; measured Eγ, Iγ, γ-multiplicity; deduced absorption σ(Eγ, E). 156Dy deduced GDR parameters, deformation.

doi: 10.1016/0370-2693(93)91277-T
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1993WI02      Z.Phys. A344, 351 (1993)

P.Willsau, H.Hubel, W.Korten, F.Azaiez, M.A.Deleplanque, R.M.Diamond, A.O.Macchiavelli, F.S.Stephens, H.Kluge, F.Hannachi, J.C.Bacelar, J.A.Becker, M.J.Brinkman, E.A.Henry, A.Kuhnert, T.F.Wang, J.A.Draper, E.Rubel

Transition Quadrupole Moments of Superdeformed States in 194Pb

NUCLEAR REACTIONS 150Sm(48Ca, 4n), E=205 MeV; measured γγ-coin, DSA. 194Pb levels deduced T1/2, superdeformed states transition quadrupole moments.

doi: 10.1007/BF01303032
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1992KU13      Phys.Rev. C46, 484 (1992)

A.Kuhnert, D.Alber, H.Grawe, H.Kluge, K.H.Maier, W.Reviol, X.Sun, E.M.Beck, A.P.Byrne, H.Hubel, J.C.Bacelar, M.A.Deleplanque, R.M.Diamond, F.S.Stephens

Observation of High-Spin States in the N = 84 Nucleus 152Er and Comparison with Shell-Model Calculations

NUCLEAR REACTIONS 116Sn(40Ar, 4n), E=180 MeV; measured γγ-coin, γγγ(t), γ(ce)(t), γγ(θ). 152Er deduced levels, J, π, γ-multipolarity, δ. Model comparison.

doi: 10.1103/PhysRevC.46.484
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1992NO03      Phys.Lett. 292B, 257 (1992)

R.F.Noorman, J.C.Bacelar, M.N.Harakeh, W.H.A.Hesselink, H.J.Hofmann, N.Kalantar-Nayestanaki, J.P.S.van Schagen, A.Stolk, Z.Sujkowski, M.J.A.de Voigt, A.van der Woude

Observation of Strongly Deformed Shapes in 154-152Dy Nuclei at Medium Temperatures

NUCLEAR REACTIONS 114Cd(40Ar, xn), E=173 MeV; measured γ-spectra, γγ-coin, γγ(t). 154,153,152Dy deduced splitting of GDR built on excited states, deformations. Statistical model analysis.

doi: 10.1016/0370-2693(92)91172-6
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1992VA08      Phys.Rev.Lett. 68, 3145 (1992); Erratum Phys.Rev.Lett. 69, 1148 (1992)

H.van der Ploeg, R.Postma, J.C.Bacelar, T.van den Berg, V.E.Iacob, J.R.Jongman, A.van der Woude

Large Gamma Anisotropy Observed in the 252Cf Sponstaneous-Fission Process

RADIOACTIVITY 252Cf(SF); measured fission γ-spectra, γ(θ); deduced nuclear shape at photon emission.

doi: 10.1103/PhysRevLett.68.3145
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1991UR01      Phys.Lett. 258B, 293 (1991)

W.Urban, R.M.Lieder, J.C.Bacelar, P.P.Singh, D.Alber, D.Balabanski, W.Gast, H.Grawe, G.Hebbinghaus, J.R.Jongman, T.Morek, R.F.Noorman, T.Rzaca-Urban, H.Schnare, M.Thoms, O.Zell, W.Nazarewicz

High-Spin Octupole Correlations in the N = 86, 146Nd and 148Sm Nuclei

NUCLEAR REACTIONS 130Te(22Ne, X), E=85 MeV; measured γ-spectra, γγ-coin. 138Ba(13C, 3n), E=55 MeV; measured γ linear polarization. 136Xe(13C, X), E=55 MeV; measured γ-spectra, γγ-coin. 146Nd, 148Sm deduced levels, J, π, B(λ) ratios.

doi: 10.1016/0370-2693(91)91088-D
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1990DE03      Nucl.Phys. A507, 447 (1990)

M.J.A.De Voigt, R.Kaczarowski, H.J.Riezebos, R.F.Noorman, J.C.Bacelar, M.A.Deleplanque, R.M.Diamond, F.S.Stephens

Rotational Bands in 181Pt

NUCLEAR REACTIONS 144Nd(40Ar, 3n), E=170-200 MeV; measured Eγ, Iγ(θ), γγ(t). 181Pt deduced levels, J, π, T1/2, branching ratios, rotational angular velocity, moments of inertia. Enriched targets, Ge(BGO-CSS) detector assemblies (HERA).

doi: 10.1016/0375-9474(90)90303-4
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1990DE04      Nucl.Phys. A507, 472 (1990)

M.J.A.De Voigt, R.Kaczarowski, H.J.Riezebos, R.F.Noorman, J.C.Bacelar, M.A.Deleplanque, R.M.Diamond, F.S.Stephens, J.Sauvage, B.Roussiere

Collective and Quasiparticle Excitations in 180Pt

NUCLEAR REACTIONS 144Nd(40Ar, 4n), E=170-200 MeV; measured Eγ, Iγ(θ), I(ce), γγ(t). 180Pt deduced levels, J, π, T1/2, ICC, branching ratios, rotational angular velocity, moments of inertia. Enriched targets, Ge(BGO-CSS) detector assemblies (HERA), miniorange spectrometer.

doi: 10.1016/0375-9474(90)90304-5
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1990DI01      Phys.Rev. C41, R1327 (1990)

R.M.Diamond, C.W.Beausang, A.O.Macchiavelli, J.C.Bacelar, J.Burde, M.A.Deleplanque, J.E.Draper, C.Duyar, R.J.McDonald, F.S.Stephens

Line Shape and Lifetimes in the 135Nd Superdeformed Band

NUCLEAR REACTIONS 100Mo(40Ar, 5n), E=175 MeV; measured γγγ-coin, DSA. 135Nd deduced levels, J, π, superdeformed band features, transition quadrupole moment.

doi: 10.1103/PhysRevC.41.R1327
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1990UR01      Phys.Lett. 247B, 238 (1990)

W.Urban, J.C.Bacelar, W.Gast, G.Hebbinghaus, A.Kramer-Flecken, R.M.Lieder, T.Morek, T.Rzaca-Urban

High Spin Parity Doublets in the Nucleus 151Pm

NUCLEAR REACTIONS 150Nd(α, 2np), E=68 MeV; measured γγ-coin. 151Pm deduced levels, J, π, B(λ), band structure, deformation features.

doi: 10.1016/0370-2693(90)90889-E
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1989LE01      Phys.Rev. C39, 619 (1989)

K.T.Lesko, E.B.Norman, R.-M.Larimer, J.C.Bacelar, E.M.Beck

Level Scheme of 148Pm and the s-Process Neutron Density

NUCLEAR REACTIONS 148Nd(p, nγ), E=8 MeV; measured I(γ), E(γ), γγ-coin; deduced s-process neutron density. 148Pm deduced levels.

doi: 10.1103/PhysRevC.39.619
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1989SI03      J.Phys.(London) G15, 643 (1989)

J.Simpson, M.A.Riley, J.F.Sharpey-Schafer, J.C.Bacelar, A.P.Cook, J.R.Cresswell, D.V.Elenkov, P.D.Forsyth, G.B.Hagemann, B.Herskind, A.Holm, D.Howe, B.M.Nyako

The Structure of States at Very High Spin in 157Er

NUCLEAR REACTIONS 114Cd(48Ca, 5n), E=200 MeV; measured γγ-coin, γγ(θ). 157Er deduced levels, γ-branching, J, π. Enriched targets, Ge detectors, bismuth germanate crystal ball. Cranked shell model calculations.

doi: 10.1088/0954-3899/15/5/017
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1988BE43      Phys.Lett. 215B, 624 (1988)

E.M.Beck, H.Hubel, R.M.Diamond, J.C.Bacelar, M.A.Deleplanque, K.H.Maier, R.J.McDonald, F.S.Stephens, P.O.Tjom

Loss of Collectivity Along the Yrast Line in 158Er

NUCLEAR REACTIONS 122Sn(40Ar, 4n), E=181 MeV; measured γγ-coin, RDM. 158Er deduced levels, J, π, T1/2, B(λ), transition quadrupole moments.

doi: 10.1016/0370-2693(88)90032-9
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1988HU05      Z.Phys. A329, 289 (1988)

H.Hubel, M.Murzel, E.M.Beck, H.Kluge, A.Kuhnert, K.H.Maier, J.C.Bacelar, M.A.Deleplanque, R.M.Diamond, F.S.Stephens

High-Spin Spectroscopy of 162Hf

NUCLEAR REACTIONS 126Te(40Ca, 4n), (40Ca, 5n), E=195 MeV; measured γγ-, γγγ-coin, Iγ(θ) ratio. 162Hf deduced levels, J, π. 161Hf deduced levels.


1988ST11      Phys.Rev. C37, 2927 (1988)

F.S.Stephens, J.E.Draper, J.C.Bacelar, E.M.Beck, M.A.Deleplanque, R.M.Diamond

Gamma-Ray Energy Correlations from Nuclei at Very High Spins

NUCLEAR REACTIONS 124Sn(48Ti, 4n), E=215 MeV; 124Sn(40Ar, 4n), E=180 MeV; 100Mo(40Ar, 4n), E=176 MeV; measured Eγ, Iγ, energy correlations; deduced residual nuclei temperature regions role.

doi: 10.1103/PhysRevC.37.2927
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1987BA06      Phys.Rev. C35, 1170 (1987)

J.C.Bacelar, R.M.Diamond, E.M.Beck, M.A.Deleplanque, J.Draper, F.S.Stephens

Line-Shape Analysis of High Spin States: Collectivity in 166Yb

NUCLEAR REACTIONS 130Te(40Ar, 4n), E=180 MeV; measured γγγ-coin, DSA. 166Yb deduced levels, J, π, T1/2, yrast scheme, B(λ).

doi: 10.1103/PhysRevC.35.1170
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1987BE07      Nucl.Phys. A464, 472 (1987)

E.M.Beck, J.C.Bacelar, M.A.Deleplanque, R.M.Diamond, F.S.Stephens, J.E.Draper, B.Herskind, A.Holm, P.O.Tjom

High-Spin State Spectroscopy in 165,166Yb

NUCLEAR REACTIONS 130Te(40Ar, xn), E=180 MeV; measured Eγ, γγγ-coin, γ(θ). 165,166Yb deduced levels, J, π, rotational bands. Enriched targets.

doi: 10.1016/0375-9474(87)90311-3
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1987BE20      Z.Phys. A327, 397 (1987)

E.M.Beck, M.A.Deleplanque, R.M.Diamond, R.J.McDonald, F.S.Stephens, J.C.Bacelar, J.E.Draper

High-Spin Spectroscopy of 168Hf

NUCLEAR REACTIONS 124Sn(48Ti, 4n), E=210, 215 MeV; measured Eγ, Iγ, γγ-coin, γ energy correlations. 168Hf deduced levels, J, π. High energy resolution array.


1987BE32      Phys.Lett. 195B, 531 (1987)

E.M.Beck, R.J.McDonald, A.O.Macchiavelli, J.C.Bacelar, M.A.Deleplanque, R.M.Diamond, J.E.Draper, F.S.Stephens

Superdeformed Bands in Nd Nuclei

NUCLEAR REACTIONS 98Mo(40Ar, 4n), E=173 MeV; 100Mo(40Ar, 4n), E=176 MeV; measured Eγ, Iγ, γγ-energy correlations. 134,136Nd deduced levels, J, π, superdeformed bands, dynamic moments of inertia.

doi: 10.1016/0370-2693(87)91568-1
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1987BE57      Phys.Rev.Lett. 58, 2182 (1987)

E.M.Beck, F.S.Stephens, J.C.Bacelar, M.A.Deleplanque, R.M.Diamond, J.E.Draper, C.Duyar, R.J.McDonald

Superdeformed Band in 135Nd

NUCLEAR REACTIONS 100Mo(40Ar, 5n), E=173, 177 MeV; measured γγ-coin. 135Nd deduced levels, J, π, superdeformed band, moment of inertia.

doi: 10.1103/PhysRevLett.58.2182
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1987DE17      Phys.Rev.Lett. 59, 270 (1987)

M.J.A.de Voigt, J.C.Bacelar, E.M.Beck, M.A.Deleplanque, R.M.Diamond, J.E.Draper, H.J.Riezebos, F.S.Stephens

Superdeformed Bands at High Spin in Z = 66 and 68 Isotopes

NUCLEAR REACTIONS 114,116Cd, 118,120Sn(40Ar, xn), E=180 MeV; measured γγ-coin, γγ- energy correlation spectra. 150,152Dy, 154,156Er deduced superdeformed bands. Compton suppressed Ge detectors.

RADIOACTIVITY 150,152Dy, 154,156Er(EC), (β+); measured γγ- energy correlations, γγ-coin spectra. 150,152Dy, 154,156Er deduced superdeformed bands. Compton suppressed Ge detectors.

doi: 10.1103/PhysRevLett.59.270
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1987DE18      Phys.Lett. 193B, 422 (1987)

M.A.Deleplanque, J.C.Bacelar, E.M.Beck, R.M.Diamond, J.E.Draper, R.J.McDonald, F.S.Stephens

New Structures at High Spin in 159Er

NUCLEAR REACTIONS 124Sn(40Ar, 5n), E=180 MeV; measured Eγ, Iγ, γγ-coin. 159Er deduced levels, J, π, γ-branching, band characteristics. Compton suppressed Ge detectors.

doi: 10.1016/0370-2693(87)91690-X
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1987DE23      Phys.Lett. 195B, 17 (1987)

M.A.Deleplanque, J.C.Bacelar, E.M.Beck, R.M.Diamond, F.S.Stephens, J.E.Draper, Th.Dossing, K.Neergard

Particle-Hole States at High Spin in 150Dy

NUCLEAR REACTIONS 114Cd(40Ar, 4n), E=175 MeV; measured Eγ, Iγ, γγγ-coin. 150Dy deduced levels, J, π, γ-branching, configurations. Compton suppressed Ge detectors.

doi: 10.1016/0370-2693(87)90878-1
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1987SH14      Nucl.Phys. A470, 253 (1987)

S.Shastry, J.C.Bacelar, J.D.Garrett, G.B.Hagemann, B.Herskind, J.Kownacki

Signature-Splitting Systematics of the Positive-Parity Bands in Odd-N Rare-Earth Nuclei

NUCLEAR STRUCTURE 159,161,163,165Er, 163,165,169,161,167,171Yb, 167,169,171,173Hf, 175,173W, 177,179,181,183Os; calculated levels, band structure, configuration; deduced signature splitting isotopic, isotonic dependences. Cranking model.

doi: 10.1016/0375-9474(87)90001-7
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1986BA61      Phys.Rev.Lett. 57, 3019 (1986)

J.C.Bacelar, A.Holm, R.M.Diamond, E.M.Beck, M.A.Deleplanque, J.Draper, B.Herskind, F.S.Stephens

Lifetime Measurements of High-Spin States in 166Yb

NUCLEAR REACTIONS 130Te(40Ar, 4n), E=180 MeV; measured Eγ, γγγ-coin, DSA. 166Yb levels deduced T1/2, B(E2), yrast sequence B(E2) ratios.

doi: 10.1103/PhysRevLett.57.3019
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1986PA07      Phys.Rev.Lett. 57, 62 (1986)

S.B.Patel, F.S.Stephens, J.C.Bacelar, E.M.Beck, M.A.Deleplanque, R.M.Diamond, J.E.Draper

Effects of Alignments on the Shape of 158Yb

NUCLEAR REACTIONS 122Te(40Ar, 4n), E=175 MeV; 122Sn(40Ca, 4n), E=195 MeV; measured γγ-coin. 158Yb deduced levels, J, π, γ-branching, alignment role on shape.

doi: 10.1103/PhysRevLett.57.62
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1986ST11      Phys.Rev.Lett. 57, 2912 (1986)

F.S.Stephens, J.E.Draper, J.L.Egido, J.C.Bacelar, E.M.Beck, M.A.Deleplanque, R.M.Diamond

Damping of Nuclear Rotational Motion at Modest Temperatures

NUCLEAR REACTIONS 124Sn(40Ar, Xγ)159Er/160Er, E=180 MeV; measured inclusive γ-ray spectra; deduced rotational motion damping. Compton suppressed γ-ray detectors.

doi: 10.1103/PhysRevLett.57.2912
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1986WA32      Phys.Scr. 34, 710 (1986)

W.Walus, L.Carlen, S.Jonsson, J.Lyttkens, H.Ryde, J.Kownacki, W.Nazarewicz, J.C.Bacelar, J.Dudek, J.D.Garrett, G.B.Hagemann, B.Herskind, C.X.Yang

Deformation Dependence of Single Quasiproton States in 177Re

NUCLEAR REACTIONS 165Ho(16O, 4n), E=78-84.5 MeV; measured Eγ, Iγ, γ(θ), γγ-coin. 177Re deduced levels, J, π, γ-branching, δ, configurations, B(M1)/(Q02). Woods-Saxon cranking model.

doi: 10.1088/0031-8949/34/6A/028
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1986ZH01      Nucl.Phys. A453, 104 (1986)

J.-Y.Zhang, J.D.Garrett, J.C.Bacelar, S.Frauendorf

The Routhian in ' Gauge ' Space

NUCLEAR STRUCTURE 167,168Yb; calculated configuration space routhians. 168Hf, 150Dy; calculated configuration, gauge space alignment. 168,164,160Yb; calculated total correlation energies.

doi: 10.1016/0375-9474(86)90032-1
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1985BA07      Phys.Lett. 152B, 157 (1985)

J.C.Bacelar, M.Diebel, O.Andersen, J.D.Garrett, G.B.Hagemann, B.Herskind, J.Kownacki, C.X.Yang, L.Carlen, J.Lyttkens, H.Ryde, W.Walus, P.O.Tjom

Configuration-Dependent Pairing and Deformation in 163Er

NUCLEAR REACTIONS 150Nd(18O, 5n), E=83 MeV; measured γ(θ), γγ-coin. 163Er deduced levels, J, π, γ-branching, rotational band crossing frequencies, configuration dependent pairing, deformation. Cranking HFB calculation.

doi: 10.1016/0370-2693(85)91160-8
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1985BA47      Nucl.Phys. A442, 509 (1985)

J.C.Bacelar, M.Diebel, C.Ellegaard, J.D.Garrett, G.B.Hagemann, B.Herskind, A.Holm, C.-X.Yang, J.-Y.Zhang, P.O.Tjom, J.C.Lisle

Single-Neutron States at High Spins in Ytterbium Nuclei; evidence for the quenching of static neutron pair correlations

NUCLEAR REACTIONS 124Sn(48Ca, 3n), (48Ca, 4n), (48Ca, 5n), E=201 MeV; measured E(γ), γγ-coin, γ(θ). 154Sm(18O, 4n), E=78 MeV; measured γ(θ); deduced static neutron-pair correlations. 167,168Yb deduced levels, J, π, rotational bands. Cranking-model, and gauge-space analysis.

doi: 10.1016/S0375-9474(85)80029-4
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1985BA48      Nucl.Phys. A442, 547 (1985)

J.C.Bacelar, R.Chapman, J.R.Leslie, J.C.Lisle, J.N.Mo, E.Paul, A.Simcock, J.C.Willmott, J.D.Garrett, G.B.Hagemann, B.Herskind, A.Holm, P.M.Walker

Study of 170,171,173Ta Isotope at High Spins

NUCLEAR REACTIONS 159Tb(16O, 4n), E=72-84 MeV; 159Tb(18O, 4n), E=84 MeV; 124Sn(51V, xn), E=230 MeV; measured γγ-coin, γ(θ). 170,171,173Ta deduced levels, J, π, T1/2, B(M1), rotational band moments of inertia. Cranked shell model analysis. Enriched targets.

doi: 10.1016/S0375-9474(85)80030-0
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1985BA50      Phys.Rev.Lett. 55, 1858 (1985)

J.C.Bacelar, G.B.Hagemann, B.Herskind, B.Lauritzen, A.Holm, J.C.Lisle, P.O.Tjom

Determination of the Spreading Width for the Collective Transition Strength at Finite Temperature

NUCLEAR REACTIONS 124Sn(48Ca, xn), E=200 MeV; measured γγ-coin. 168Yb deduced quasicontinuum E2 transitions, associated parameters. Rotational pattern damping with increasing temperature.

doi: 10.1103/PhysRevLett.55.1858
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1985TJ02      Phys.Rev.Lett. 55, 2405 (1985)

P.O.Tjom, R.M.Diamond, J.C.Bacelar, E.M.Beck, M.A.Deleplanque, J.E.Draper, F.S.Stephens

Slow and Fast High-Spin Sequences in 158Er

NUCLEAR REACTIONS 122Sn(40Ar, 4n), E=175 MeV; measured γγ-coin. 158Er deduced levels, J, π, γ-multipolarity, yrast band feeding characteristic.

doi: 10.1103/PhysRevLett.55.2405
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1983CH44      Phys.Rev.Lett. 51, 2265 (1983)

R.Chapman, J.C.Lisle, J.N.Mo, E.Paul, A.Simcock, J.C.Willmott, J.R.Leslie, H.G.Price, P.M.Walker, J.C.Bacelar, J.D.Garrett, G.B.Hagemann, B.Herskind, A.Holm, P.J.Nolan

Rotational Behavior at High Spin in 168Hf

NUCLEAR REACTIONS 124Sn(48Ti, 4n), E=216 MeV; 156Gd(16O, 4n), E=85 MeV; measured Eγ, Iγ, γγ-coin, γ-multiplicity. 168Hf deduced levels, yrast sequence, J, π, spin alignment, moment of inertia, high-spin rotational behavior.

doi: 10.1103/PhysRevLett.51.2265
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1983YA08      Phys.Lett. 133B, 39 (1983)

C.X.Yang, J.Kownacki, J.D.Garrett, G.B.Hagemann, B.Herskind, J.C.Bacelar, J.R.Leslie, R.Chapman, J.C.Lisle, J.N.Mo, A.Simcock, J.C.Willmott, W.Walus, L.Carlen, S.Jonsson, J.Lyttkens, H.Ryde, P.O.Tjom, P.M.Walker

The Identification of the (1/2)+[660] Proton Orbitals at High Spins in Rare-Earth Nuclei

NUCLEAR REACTIONS 159Tb, 165Ho(16O, 4n), E=85 MeV; measured γγ-coin, X-ray(γ)(t), I(ce). 171Ta, 177Re deduced levels, γ-branching, band structure, proton orbital Nilsson assignment.

doi: 10.1016/0370-2693(83)90101-6
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