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NSR database version of May 24, 2024.

Search: Author = H.T.Nyhus

Found 32 matches.

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2020KI17      Phys.Rev.Lett. 125, 182701 (2020)

T.Kibedi, B.Alshahrani, A.E.Stuchbery, A.C.Larsen, A.Gorgen, S.Siem, M.Guttormsen, F.Giacoppo, A.I.Morales, E.Sahin, G.M.Tveten, F.L.Bello Garrote, L.Crespo Campo, T.K.Eriksen, M.Klintefjord, S.Maharramova, H.-T.Nyhus, T.G.Tornyi, T.Renstrom, W.Paulsen

Radiative Width of the Hoyle State from γ-Ray Spectroscopy

NUCLEAR REACTIONS 12C(p, p'), E=10.7 MeV; measured reaction products, Eγ, Iγ, γ-γ-p coin.; deduced γ-ray energies, resonances, radiative branching ratio, radiative widths. Comparison with available data.

doi: 10.1103/PhysRevLett.125.182701
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Data from this article have been entered in the XUNDL database. For more information, click here.


2018RE15      Phys.Rev. C 98, 054310 (2018)

T.Renstrom, H.Utsunomiya, H.T.Nyhus, A.C.Larsen, M.Guttormsen, G.M.Tveten, D.M.Filipescu, I.Gheorghe, S.Goriely, S.Hilaire, Y.-W.Lui, J.E.Midtbo, S.Peru, T.Shima, S.Siem, O.Tesileanu

Verification of detailed balance for γ absorption and emission in Dy isotopes

NUCLEAR REACTIONS 162,163Dy(γ, n), E=6.4-13.5 MeV laser Compton backscattered γ-ray beam; measured neutron spectra, and σ(E) using 4π 3He proportional counter array for neutron detection at the NewSUBARU synchrotronic radiation facility; deduced renormalized nuclear level densities (NLD), γ-strength functions (γSF). 160,161,162,163,164Dy; deduced γ strength functions, nuclear level densities, E1 γ strength function, and M1 scissors resonance σ, centroids, widths, B(M1). 159,160,161,162,163Dy(n, γ), E=0.001-1 MeV; calculated σ(E) with TALYS-1.8 code, and compared to previous experimental data. 160,161,162,163,164Dy(3He, α), (3He, 3He'), E*<8 MeV; analyzed previous experimental data; deduced level densities.

doi: 10.1103/PhysRevC.98.054310
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetK2613.


2017KH08      Phys.Rev. C 95, 045805 (2017)

B.V.Kheswa, M.Wiedeking, J.A.Brown, A.C.Larsen, S.Goriely, M.Guttormsen, F.L.Bello Garrote, L.A.Bernstein, D.L.Bleuel, T.K.Eriksen, F.Giacoppo, A.Gorgen, B.L.Goldblum, T.W.Hagen, P.E.Koehler, M.Klintefjord, K.L.Malatji, J.E.Midtbo, H.T.Nyhus, P.Papka, T.Renstrom, S.J.Rose, E.Sahin, S.Siem, T.G.Tornyi

137, 138, 139La (n, γ) cross sections constrained with statistical decay properties of 138, 139, 140La nuclei

NUCLEAR REACTIONS 139La(3He, α), (3He, 3He'), E=38 MeV; 139La(d, p), E=13.5 MeV; measured α, 3He and proton spectra, Eγ, Iγ, αγ-, (3He)γ-, and pγ-coin using SiRi array for particles and CACTUS array for γ rays. 138,139,140La; deduced nuclear level densities (NLDs)and γ-ray strength functions (γSF). Comparison with previous experimental data, and with microscopic calculations using HFB+Comb, Fermi gas (BSFG1+CT) and BSFG2+CT models. 137,138,139La(n, γ), E=0.001-1 MeV; calculated σ(E) with the TALYS reaction code using the measured NLDs and γSFs as inputs, and compared to available experimental data.

doi: 10.1103/PhysRevC.95.045805
Citations: PlumX Metrics


2017LA06      J.Phys.(London) G44, 064005 (2017)

A.C.Larsen, M.Guttormsen, N.Blasi, A.Bracco, F.Camera, L.Crespo Campo, T.K.Eriksen, A.Gorgen, T.W.Hagen, V.W.Ingeberg, B.V.Kheswa, S.Leoni, J.E.Midtbo, B.Million, H.T.Nyhus, T.Renstrom, S.J.Rose, I.E.Ruud, S.Siem, T.G.Tornyi, G.M.Tveten, A.V.Voinov, M.Wiedeking, F.Zeiser

Low-energy enhancement and fluctuations of γ-ray strength functions in 56, 57Fe: test of the Brink-Axel hypothesis

NUCLEAR REACTIONS 56,57Fe(p, pγ), E=16 MeV; measured reaction products, Ep, Ip, Eγ, Iγ; deduced level densities, γ-ray strength functions.

doi: 10.1088/1361-6471/aa644a
Citations: PlumX Metrics


2016RE13      Phys.Rev. C 93, 064302 (2016)

T.Renstrom, H.-T.Nyhus, H.Utsunomiya, R.Schwengner, S.Goriely, A.C.Larsen, D.M.Filipescu, I.Gheorghe, L.A.Bernstein, D.L.Bleuel, T.Glodariu, A.Gorgen, M.Guttormsen, T.W.Hagen, B.V.Kheswa, Y.-W.Lui, D.Negi, I.E.Ruud, T.Shima, S.Siem, K.Takahisa, O.Tesileanu, T.G.Tornyi, G.M.Tveten, M.Wiedeking

Low-energy enhancement in the γ-ray strength functions of 73, 74Ge

NUCLEAR REACTIONS 74Ge(3He, 3He), (3He, α), E=38 MeV; measured Eγ, Iγ, (particle)γ-coin using SiRi particle detector array and CACTUS array for γ detection at Oslo Cyclotron Laboratory (OCL) facility. 74Ge(γ, n), E=10.4-12.7 MeV; measured E(n), I(n), σ(E) using 4π neutron detection array at NewSUBARU synchrotron radiation facility. 73,74Ge, deduced γ-strength functions (γSF), nuclear level densities (NLD). Comparison with shell-model calculations. 72,73Ge(n, γ), E=0.001-3 MeV; deduced experimentally constrained σ(E), and compared with TALYS calculations for E1 and M1 radiations.

doi: 10.1103/PhysRevC.93.064302
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetK2612.


2016TV01      Phys.Rev. C 94, 025804 (2016)

G.M.Tveten, A.Spyrou, R.Schwengner, F.Naqvi, A.C.Larsen, T.K.Eriksen, F.L.Bello Garrote, L.A.Bernstein, D.L.Bleuel, L.Crespo Campo, M.Guttormsen, F.Giacoppo, A.Gorgen, T.W.Hagen, K.Hadynska-Klek, M.Klintefjord, B.S.Meyer, H.T.Nyhus, T.Renstrom, S.J.Rose, E.Sahin, S.Siem, T.G.Tornyi

Completing the nuclear reaction puzzle of the nucleosynthesis of 92Mo

NUCLEAR REACTIONS 92Mo(p, p'), E=16.5 MeV; measured Ep, Ip, Eγ, Iγ pγ-coin, angular distributions using SiRi silicon ΔE-E telescopes for protons and CACTUS scintillator detector array for γ rays at Oslo Cyclotron Laboratory; deduced nuclear level density (NLD) and γ-strength function (γSF) of 92Mo. 91Nb(p, γ)92Mo, T9=1.8-3.5; deduced astrophysical reaction rates using TALYS 1.6 code and NLD and γSF input from present experiment; discussed puzzle of the nucleosynthesis of 92Mo in the context of p process. Comparison with previous experimental results from 92Mo(γ, γ') and 92,94,95,96Mo(γ, n) reactions, and shell model calculations.

doi: 10.1103/PhysRevC.94.025804
Citations: PlumX Metrics


2015GI02      Phys.Rev. C 91, 054327 (2015)

F.Giacoppo, F.L.Bello Garrote, L.A.Bernstein, D.L.Bleuel, R.B.Firestone, A.Gorgen, M.Guttormsen, T.W.Hagen, M.Klintefjord, P.E.Koehler, A.C.Larsen, H.T.Nyhus, T.Renstrom, E.Sahin, S.Siem, T.Tornyi

γ decay from the quasicontinuum of 197, 198Au

NUCLEAR REACTIONS 197Au(d, p), E=12.5 MeV; 197Au(3He, 3He'), E=34.0 MeV; measured Eγ, Iγ, particle spectra, (particle)γ-coin using CACTUS spectrometer for γ rays and SiRi (Silicon Ring) for particle detection at Oslo Cyclotron Laboratory; deduced γ strength functions, level density, spin cutoff distributions as function of excitation energy, σ(E) for 197Au(n, γ). Comparison with (γ, n) experimental results, and with theoretical calculations using EGLO model with four SLO components, and QRPA.

doi: 10.1103/PhysRevC.91.054327
Citations: PlumX Metrics


2015GU27      Eur.Phys.J. A 51, 170 (2015)

M.Guttormsen, M.Aiche, F.L.Bello Garrote, L.A.Bernstein, D.L.Bleuel, Y.Byun, Q.Ducasse, T.K.Eriksen, F.Giacoppo, A.Gorgen, F.Gunsing, T.W.Hagen, B.Jurado, M.Klintefjord, A.C.Larsen, L.Lebois, B.Leniau, H.T.Nyhus, T.Renstrom, S.J.Rose, E.Sahin, S.Siem, T.G.Tornyi, G.M.Tveten, A.Voinov, M.Wiedeking, J.Wilson

Experimental level densities of atomic nuclei

doi: 10.1140/epja/i2015-15170-4
Citations: PlumX Metrics


2015KH02      Phys.Lett. B 744, 268 (2015)

B.V.Kheswa, M.Wiedeking, F.Giacoppo, S.Goriely, M.Guttormsen, A.C.Larsen, F.L.Bello Garrote, T.K.Eriksen, A.Gorgen, T.W.Hagen, P.E.Koehler, M.Klintefjord, H.T.Nyhus, P.Papka, T.Renstrom, S.Rose, E.Sahin, S.Siem, T.Tornyi

Galactic production of 138La: Impact of 138, 139La statistical properties

NUCLEAR REACTIONS 139La(3He, X)138La/139La, E=38 MeV; measured reaction products, Eγ, Iγ; deduced σ, γ-ray strength functions, nuclear level densities, Maxwellian-averaged σ. Comparison with available data.

doi: 10.1016/j.physletb.2015.03.065
Citations: PlumX Metrics


2015LA08      Acta Phys.Pol. B46, 509 (2015)

A.C.Larsen, S.Goriely, L.A.Bernstein, D.L.Bleuel, A.Bracco, B.A.Brown, F.Camera, T.K.Eriksen, S.Frauendorf, F.Giacoppo, M.Guttormsen, A.Gorgen, S.Harissopulos, S.Leoni, S.N.Liddick, F.Naqvi, H.T.Nyhus, S.J.Rose, T.Renstrom, R.Schwengner, S.Siem, A.Spyrou, G.M.Tveten, A.V.Voinov, M.Wiedeking

Upbend and M1 Scissors Mode in Neutron-rich Nuclei - Consequences for r-process (n, γ) Reaction Rates

doi: 10.5506/APhysPolB.46.509
Citations: PlumX Metrics


2015NY01      Phys.Rev. C 91, 015808 (2015)

H.-T.Nyhus, T.Renstrom, H.Utsunomiya, S.Goriely, D.M.Filipescu, I.Gheorghe, O.Tesileanu, T.Glodariu, T.Shima, K.Takahisa, S.Miyamoto, Y.-W.Lui, S.Hilaire, S.Peru, M.Martini, L.Siess, A.J.Koning

Photoneutron cross sections for neodymium isotopes: Toward a unified understanding of (γ, n) and (n, γ) reactions in the rare earth region

NUCLEAR REACTIONS 143,144,145,146,148Nd(γ, n), E=7.55-13.00 MeV laser Compton scattered (LCS) rays; measured neutron spectra, σ(E) at GACKO (Gamma Collaboration Hutch of Konan University) using SUBARU synchrotron radiation facility; deduced σ(E) for 147Nd(n, γ) by combining present (γ, n) data with existing (n, γ) data for 142,143,144,145,146,148Nd(n, γ), and using γ-SF method. Comparison of σ(E) for 147Nd(n, γ) with JENDL-4.0, ENDF/B-VII.1, and ROSFOND-2010 evaluated libraries. Comparison with predictions of Skyrme-Fock-Bogoliubov (HFB) plus quasiparticle random phase approximation (QRPA) model, and axially symmetric-deformed Gogny HFB plus QRPA model of E1 γ-ray strength using TALYS code. Comparison with previous experimental data.

doi: 10.1103/PhysRevC.91.015808
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetK2478.


2014ER04      Phys.Rev. C 90, 044311 (2014)

T.K.Eriksen, H.T.Nyhus, M.Guttormsen, A.Gorgen, A.C.Larsen, T.Renstrom, I.E.Ruud, S.Siem, H.K.Toft, G.M.Tveten, J.N.Wilson

Pygmy resonance and low-energy enhancement in the γ-ray strength functions of Pd isotopes

NUCLEAR REACTIONS 106,108Pd(3He, 3He'), (3He, α), E=38 MeV; measured Eγ, Iγ, particle spectra, (particle)γ-coin using SiRi particle telescope and CACTUS γ-detector array at Oslo cyclotron facility. 105,106,107,108Pd; deduced level densities, γ-ray strength functions, pygmy dipole resonances (PDR) at E(-γ)=8 MeV, low-energy enhancement of the strength function for 105Pd as compared to the low-energy tail of the giant dipole resonance (GDR), and neutron number dependency of the PDR strength. Comparison with results from (γ, n) data.

doi: 10.1103/PhysRevC.90.044311
Citations: PlumX Metrics


2014FI17      Phys.Rev. C 90, 064616 (2014)

D.M.Filipescu, I.Gheorghe, H.Utsunomiya, S.Goriely, T.Renstrom, H.-T.Nyhus, O.Tesileanu, T.Glodariu, T.Shima, K.Takahisa, S.Miyamoto, Y.-W.Lui, S.Hilaire, S.Peru, M.Martini, A.J.Koning

Photoneutron cross sections for samarium isotopes: Toward a unified understanding of (γ, n) and (n, γ) reactions in the rare earth region

NUCLEAR REACTIONS 144,147,148,149,150,152,154Sm(γ, n), E=6-17 MeV; measured E(n), I(n), monochromatic and nonmonochromatic σ(E). Comparison with previous experimental results, and predictions from Skyrme HFB+QRPA using BSk7 interaction, and axially deformed Gogny HFB+QRPA models using D1M interaction. 147,148,149,150,151,152Sm(n, γ), E=0.001-1 MeV; analyzed measured σ(E) with a TALYS calculation using D1M+QRPA calculation for the E1 strength function. 153Sm(n, γ), E=0.001-1 MeV; predicted σ(E) from TALYS calculations using γ-strength function (γSF) approach. Comparison with evaluated libraries JENDL-4.0, ENDF/B-VII.1, ROSFOND-2010.

doi: 10.1103/PhysRevC.90.064616
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetK2472.


2014GI08      Phys.Rev. C 90, 054330 (2014)

F.Giacoppo, F.L.Bello Garrote, L.A.Bernstein, D.L.Bleuel, T.K.Eriksen, R.B.Firestone, A.Gorgen, M.Guttormsen, T.W.Hagen, B.V.Kheswa, M.Klintefjord, P.E.Koehler, A.C.Larsen, H.T.Nyhus, T.Renstrom, E.Sahin, S.Siem, T.Tornyi

Level densities and thermodynamical properties of Pt and Au isotopes

NUCLEAR REACTIONS 195Pt(d, p), (p, p'), (p, d), E=11.3, 16.5 MeV; 197Au(d, p), (d, d'), E=12.5 MeV; 197Au(3He, 3He'), E=34.0 MeV; measured Eγ, Iγ, particle spectra, (particle)γ-coin using SiRi particle detector array and CACTUS multidetector array for γ rays at Oslo cyclotron facility. 194,195,196Pt, 197,198Au; deduced level densities from the population of excited states below S(n), density as function of temperature, single-particle level space for the last unpaired valence neutron, heat capacity and temperature, evidence of consecutive breaking of nucleon Cooper pairs in the heated nuclear system.

doi: 10.1103/PhysRevC.90.054330
Citations: PlumX Metrics


2014GU21      Phys.Rev. C 90, 044309 (2014)

M.Guttormsen, A.C.Larsen, F.L.Bello Garrote, Y.Byun, T.K.Eriksen, F.Giacoppo, A.Gorgen, T.W.Hagen, M.Klintefjord, H.T.Nyhus, T.Renstrom, S.J.Rose, E.Sahin, S.Siem, T.Tornyi, G.M.Tveten, A.Voinov

Shell-gap-reduced level densities in 89, 90Y

NUCLEAR REACTIONS 89Y(p, p'), E=17 MeV; 89Y(d, p), E=11 MeV; measured Eγ, Iγ, γγ-coin, particle-γ-coin using CACTUS array at Oslo cyclotron laboratory. 89,90Y; deduced shell-gap-reduced level densities using Oslo method; calculated single-particle orbitals using Nilsson model, proton and neutron quasi-particle energies and pair breaking number, parity asymmetries. Comparison with combinatorial quasiparticle model, and temperature dependent combinatorial model with the D1M Gogny force (TDCG). Systematics of level densities for N=46-56 Sr, Y and Zr nuclei.

doi: 10.1103/PhysRevC.90.044309
Citations: PlumX Metrics


2013LA03      Phys.Rev. C 87, 014319 (2013)

A.C.Larsen, I.E.Ruud, A.Burger, S.Goriely, M.Guttormsen, A.Gorgen, T.W.Hagen, S.Harissopulos, H.T.Nyhus, T.Renstrom, A.Schiller, S.Siem, G.M.Tveten, A.Voinov, M.Wiedeking

Transitional γ strength in Cd isotopes

NUCLEAR REACTIONS 106,112Cd(3He, α), (3He, 3He'), E=38 MeV; measured Eγ, Iγ, particle spectra, (particle)γ-coin using SiRi and CACTUS arrays at Oslo Cyclotron Laboratory. 105,106,111,112Cd; deduced level densities, γ-ray strength function. Comparisons with GLO model calculations, and with results of photonuclear reactions. Pygmy resonances. Effect of neutron skin oscillations or the spin-flip resonance.

doi: 10.1103/PhysRevC.87.014319
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO2148.


2013LA09      Acta Phys.Pol. B44, 563 (2013)

A.C.Larsen, A.Burger, S.Goriely, M.Guttormsen, A.Gorgen, T.K.Eriksen, T.W.Hagen, S.Harissopulos, H.T.Nyhus, T.Renstrom, S.Rose, I.E.Ruud, A.Schiller, S.Siem, G.M.Tveten, A.Voinov

Astrophysical Reaction Rates and the Low-energy Enhancement in the γ Strength

COMPILATION 95Mo, Ti, Sc, V, Fe, Mo, Cd; compiled γ-strength functions.

doi: 10.5506/APhysPolB.44.563
Citations: PlumX Metrics


2013LA35      Phys.Rev.Lett. 111, 242504 (2013)

A.C.Larsen, N.Blasi, A.Bracco, F.Camera, T.K.Eriksen, A.Gorgen, M.Guttormsen, T.W.Hagen, S.Leoni, B.Million, H.T.Nyhus, T.Renstrom, S.J.Rose, I.E.Ruud, S.Siem, T.Tornyi, G.M.Tveten, A.V.Voinov, M.Wiedeking

Evidence for the Dipole Nature of the Low-Energy γ Enhancement in 56Fe

NUCLEAR REACTIONS 56Fe(p, X), E=16 MeV; measured reaction products, Eγ, Iγ. 13C, 16,17O, 28Si, 56,57Fe; deduced γ-ray strength function, σ(θ) for the high-energy γ-rays. Comparison with available data.

doi: 10.1103/PhysRevLett.111.242504
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Data from this article have been entered in the XUNDL database. For more information, click here.


2012BU09      Phys.Rev. C 85, 064328 (2012)

A.Burger, A.C.Larsen, S.Hilaire, M.Guttormsen, S.Harissopulos, M.Kmiecik, T.Konstantinopoulos, M.Krticka, A.Lagoyannis, T.Lonnroth, K.Mazurek, M.Norrby, H.T.Nyhus, G.Perdikakis, S.Siem, A.Spyrou, N.U.H.Syed

Nuclear level density and γ-ray strength function of 43Sc

NUCLEAR REACTIONS 46Ti(p, α), E=32 MeV; measured Eγ, Eα, αγ-coin. 43Sc; deduced nuclear level density and γ-ray strength function. Comparison with 45Sc level density, and with microscopic, combinatorial model calculations. Oslo method.

doi: 10.1103/PhysRevC.85.064328
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO1992.


2012LA02      Phys.Rev. C 85, 014320 (2012)

A.C.Larsen, S.Goriely, A.Burger, M.Guttormsen, A.Gorgen, S.Harissopulos, M.Kmiecik, T.Konstantinopoulos, A.Lagoyannis, T.Lonnroth, K.Mazurek, M.Norrby, H.T.Nyhus, G.Perdikakis, A.Schiller, S.Siem, A.Spyrou, N.U.H.Syed, H.K.Toft, G.M.Tveten, A.Voinov

Primary γ-ray spectra in 44Ti of astrophysical interest

NUCLEAR REACTIONS 46Ti(p, t), E=32 MeV; measured particle spectra, Eγ, Iγ, γγ-, (particle)γ-coin, primary continuum γ spectra 44Ti; deduced levels, J, π, radiative strength function, level density, average radiative width by applying the Oslo method. 46,48Ti; deduced levels, J, π. 40Ca(α, γ)44Ti; analyzed cross sections of astrophysical interest using TALYS code. Comparison with generalized Lorentzian (GLO) and previous studies.

doi: 10.1103/PhysRevC.85.014320
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2012NY01      Phys.Rev. C 85, 014323 (2012)

H.T.Nyhus, S.Siem, M.Guttormsen, A.C.Larsen, A.Burger, N.U.H.Syed, H.K.Toft, G.M.Tveten, A.Voinov

Level density and thermodynamic properties of dysprosium isotopes

NUCLEAR REACTIONS 164Dy(3He, α), (3He, 3He'), E=38 MeV; measured particle spectra, Eγ, Iγ, γγ-coin, primary continuum γ spectra. 163Dy, 164Dy; deduced level density, γ-ray transmission coefficient, micro-canonical entropies, average temperature, heat capacity. Oslo method. Comparison with Fermi gas model calculations.

doi: 10.1103/PhysRevC.85.014323
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2011GU02      Phys.Rev. C 83, 014312 (2011)

M.Guttormsen, A.C.Larsen, A.Burger, A.Gorgen, S.Harissopulos, M.Kmiecik, T.Konstantinopoulos, M.Krticka, A.Lagoyannis, T.Lonnroth, K.Mazurek, M.Norrby, H.T.Nyhus, G.Perdikakis, A.Schiller, S.Siem, A.Spyrou, N.U.H.Syed, H.K.Toft, G.M.Tveten, A.Voinov

Fermi?s golden rule applied to the γ decay in the quasicontinuum of 46Ti

NUCLEAR REACTIONS 46Ti(p, p'), E=15 MeV; measured Ep, Ip, pγ-coin, excitation functions; deduced level density and radiative strength function (RSF) using Oslo method. Fermi?s golden rule employed to disentangle the γ strength and level density in the γ decay between states in the quasicontinuum of 46Ti.

doi: 10.1103/PhysRevC.83.014312
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2011HA06      Acta Phys.Pol. B42, 605 (2011)

T.W.Hagen, A.Lopez-Martens, K.Hauschild, A.V.Belozerov, M.L.Chelnokov, V.I.Chepigin, D.Curien, O.Dorvaux, G.Drafta, B.Gall, A.Gorgen, M.Guttormsen, A.V.Isaev, I.N.Izosimov, A.P.Kabachenko, D.E.Katrasev, T.Kutsarova, A.N.Kuznetsov, A.C.Larsen, O.N.Malyshev, A.Minkova, S.Mullins, H.T.Nyhus, D.Pantelica, J.Piot, A.G.Popeko, S.Saro, N.Scintee, S.Siem, E.A.Sokol, A.I.Svirikhin, A.V.Yeremin

Spectroscopy of Transfermium Nuclei Using the GABRIELA Setup

COMPILATION 243Pu, 245Cm, 247Cf, 249Fm, 251No; compiled low-energy level properties for N=149 isotones.

doi: 10.5506/APhysPolB.42.605
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2011LA05      Phys.Rev. C 83, 034315 (2011); Erratum Phys.Rev. C 97, 094901 (2018)

A.C.Larsen, M.Guttormsen, M.Krticka, E.Betak, A.Burger, A.Gorgen, H.T.Nyhus, J.Rekstad, A.Schiller, S.Siem, H.K.Toft, G.M.Tveten, A.V.Voinov, K.Wikan

Analysis of possible systematic errors in the Oslo method

NUCLEAR REACTIONS 50V, 117Sn, 160,164Dy(3He, α), E not given; 50V, 160,162,164Dy(3He, 3He'), E not given; 46Ti(p, p'), E=15-32 MeV; analyzed previous experimental data and simulated data for particle and γ spectra, (particle)γ-coin, γ-ray transmission coefficients and strength functions, level densities. 56,57,58Fe, 96,97,98Mo(3He, 3He'); analyzed first generation matrix, parity distributions. Analysis of systematic errors in Oslo method for the simultaneous extraction of the level density and γ-ray transmission coefficient from (particle)γ-coincidence data.

doi: 10.1103/PhysRevC.83.034315
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2011LO06      Nucl.Phys. A852, 15 (2011)

A.Lopez-Martens, T.Wiborg-Hagen, K.Hauschild, M.L.Chelnokov, V.I.Chepigin, D.Curien, O.Dorvaux, G.Drafta, B.Gall, A.Gorgen, M.Guttormsen, A.V.Isaev, I.N.Izosimov, A.P.Kabachenko, D.E.Katrasev, T.Kutsarova, A.N.Kuznetsov, A.C.Larsen, O.N.Malyshev, A.Minkova, S.Mullins, H.T.Nyhus, D.Pantelica, J.Piot, A.G.Popeko, S.Saro, N.Scintee, S.Siem, N.U.H.Syed, E.A.Sokol, A.I.Svirikhin, A.V.Yeremin

Spectroscopy of 253No and its daughters

NUCLEAR REACTIONS 207Pb(48Ca, 2n), (48Ca, 3n), E=220 MeV; measured Eα, Iα, Eγ, Iγ, E(ce), I(ce), αγ, α(ce)-coin; deduced ICCs, multipolarities, Qα. 253No, 249Fm; deduced levels, J, π, T1/2.

doi: 10.1016/j.nuclphysa.2011.01.012
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2011TO03      Phys.Rev. C 83, 044320 (2011)

H.K.Toft, A.C.Larsen, A.Burger, M.Guttormsen, A.Gorgen, H.T.Nyhus, T.Renstrom, S.Siem, G.M.Tveten, A.Voinov

Evolution of the pygmy dipole resonance in Sn isotopes

NUCLEAR REACTIONS 122Sn(3He, 3He'), (3He, α), E=34 MeV; measured Eγ, Iγ, (particle)γ-coin, continuum γ spectra using Oslo method. 121,122Sn; deduced γ-ray strength functions, level densities, pygmy resonances. Comparison with experimental data for 113,115,116,117,118,119,120Sn, and model calculations.

doi: 10.1103/PhysRevC.83.044320
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2010GO09      Phys.Rev. C 81, 054606 (2010)

B.L.Goldblum, S.G.Prussin, L.A.Bernstein, W.Younes, M.Guttormsen, H.T.Nyhus

Surrogate ratio methodology for the indirect determination of neutron capture cross sections

NUCLEAR REACTIONS 161,162,163Dy(3He, 3He'), (3He, α), E=45 MeV; 164Dy(3He, 3He'), E=38 MeV; measured Eγ, Iγ. 160,161,163Dy(n, γ), E<600 keV; deduced σ using the external surrogate ratio method (SRM).

doi: 10.1103/PhysRevC.81.054606
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2010NY01      Phys.Rev. C 81, 024325 (2010); Erratum Phys.Rev. C 82, 029909 (2010)

H.T.Nyhus, S.Siem, M.Guttormsen, A.C.Larsen, A.Burger, N.U.H.Syed, G.M.Tveten, A.Voinov

Radiative strength functions in 163, 164Dy

NUCLEAR REACTIONS 164Dy(3He, 3He'), (3He, α), E=38 MeV; measured continuum γ spectra, particle spectra, and (particle)γ-coin; deduced level density, radiative strength functions, contributions from giant dipole resonances, and integrated B(M1) strength of pygmy resonances.

doi: 10.1103/PhysRevC.81.024325
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2010TO06      Phys.Rev. C 81, 064311 (2010)

H.K.Toft, A.C.Larsen, U.Agvaanluvsan, A.Burger, M.Guttormsen, G.E.Mitchell, H.T.Nyhus, A.Schiller, S.Siem, N.U.H.Syed, A.Voinov

Level densities and γ-ray strength functions in Sn isotopes

NUCLEAR REACTIONS 119Sn(3He, 3He), (3He, α), E=38 MeV; measured Eγ, particle-γ coin. 118,119Sn; deduced γ-ray strength functions, level densities, parity asymmetry functions, collective enhancement factors, and spin distributions. Oslo method. Combinatorial BCS model.

doi: 10.1103/PhysRevC.81.064311
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO1852.


2009NY01      Acta Phys.Pol. B40, 593 (2009)

H.T.Nyhus, S.Siem, M.Guttormsen, A.C.Larsen, A.Burger, N.U.H.Syed, H.K.Toft, G.M.Tveten, A.Voinov

Level Densities, Thermodynamics and γ-Ray Strength Functions in 163, 164Dy

NUCLEAR REACTIONS 163,164Dy(3He, α), (3He, 3He'), E not given;measured Eγ, Iγ, Eα, Iα; deduced level densities, γ-ray strength functions, pygmy resonance.


2009SY02      Phys.Rev. C 80, 044309 (2009)

N.U.H.Syed, A.C.Larsen, A.Burger, M.Guttormsen, S.Harissopulos, M.Kmiecik, T.Konstantinopoulos, M.Krticka, A.Lagoyannis, T.Lonnroth, K.Mazurek, M.Norby, H.T.Nyhus, G.Perdikakis, S.Siem, A.Spyrou

Extraction of thermal and electromagnetic properties in 45Ti

NUCLEAR REACTIONS 46Ti(p, d), E=32 MeV; measured Eγ, (particle)γ-coin; deduced level densities, γ-ray strength function, entropy, temperature, and spin distributions using Oslo method. Comparison of measured level densities with combinatorial BCS model calculations using Nilsson orbitals, and measured γ-ray strength functions with generalized Lorentzian model calculations.

doi: 10.1103/PhysRevC.80.044309
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2008HA12      Phys.Rev. C 77, 047305 (2008); Erratum Phys.Rev. C 79, 019902 (2009)

K.Hauschild, A.Lopez-Martens, A.V.Yeremin, O.Dorvaux, A.V.Belozerov, M.L.Chelnokov, V.I.Chepigin, B.Gall, V.A.Gorshkov, M.Guttormsen, P.Jones, A.P.Kabachenko, A.Khouaja, A.C.Larsen, O.N.Malyshev, A.Minkova, H.T.Nyhus, Yu.Ts.Oganessian, D.Pantelica, A.G.Popeko, F.Rotaru, S.Saro, A.V.Shutov, S.Siem, A.I.Svirikhin, N.U.H.Syed

Half-life and excitation energy of the Iπ = 13/2+ isomer in 209Ra

NUCLEAR REACTIONS 174Yb(40Ar, 5n), E=192 MeV; measured half-life, α-spectra, Eγ, Iγ, γγ-, γα-coin, conversion electrons. 209Ra; deduced levels, J, π, configurations. 205,207Po, 207,209Rn, 211Ra; systematics.

doi: 10.1103/PhysRevC.77.047305
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