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NSR database version of February 19, 2024.

Search: Author = D.Frekers

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2022BA17      Phys.Rev.Lett. 128, 232501 (2022)

V.V.Barinov, B.T.Cleveland, S.N.Danshin, H.Ejiri, S.R.Elliott, D.Frekers, V.N.Gavrin, V.V.Gorbachev, D.S.Gorbunov, W.C.Haxton, T.V.Ibragimova, I.Kim, Y.P.Kozlova, L.V.Kravchuk, V.V.Kuzminov, B.K.Lubsandorzhiev, Y.M.Malyshkin, R.Massarczyk, V.A.Matveev, I.N.Mirmov, J.S.Nico, A.L.Petelin, R.G.H.Robertson, D.Sinclair, A.A.Shikhin, V.A.Tarasov, G.V.Trubnikov, E.P.Veretenkin, J.F.Wilkerson, A.I.Zvir

Results from the Baksan Experiment on Sterile Transitions (BEST)

NUCLEAR REACTIONS 71Ga(ν, e-), E<1 MeV; measured reaction products, Eβ, Iβ; deduced the deficit of electron neutrinos observed in gallium-based radiochemical measurements with high-intensity neutrino sources, commonly referred to as the gallium anomaly. The Baksan Experiment on Sterile Transitions (BEST).

doi: 10.1103/PhysRevLett.128.232501
Citations: PlumX Metrics


2022BA21      Phys.Rev. C 105, 065502 (2022)

V.V.Barinov, S.N.Danshin, V.N.Gavrin, V.V.Gorbachev, D.S.Gorbunov, T.V.Ibragimova, Yu.P.Kozlova, L.V.Kravchuk, V.V.Kuzminov, B.K.Lubsandorzhiev, Yu.M.Malyshkin, I.N.Mirmov, A.A.Shikhin, E.P.Veretenkin, B.T.Cleveland, H.Ejiri, S.R.Elliott, I.Kim, R.Massarczyk, D.Frekers, W.C.Haxton, V.A.Matveev, G.V.Trubnikov, J.S.Nico, A.L.Petelin, V.A.Tarasov, A.I.Zvir, R.G.H.Robertson, D.Sinclair, J.F.Wilkerson

Search for electron-neutrino transitions to sterile states in the BEST experiment

NUCLEAR REACTIONS 71Ga(ν, e-), E<1 MeV; measured reaction products, Eb, Iβ; deduced 71Ge yields, deficit of electron neutrinos observed in gallium-based radiochemical measurements with high-intensity neutrino sources, commonly referred as "the gallium anomaly". The Baksan Experiment on Sterile Transitions (BEST). Neutrinos from decay of the 51Cr decay.

RADIOACTIVITY 51Cr(EC); measured Eγ, Iγ, calorimetric heat; deduced T1/2.

doi: 10.1103/PhysRevC.105.065502
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Data from this article have been entered in the XUNDL database. For more information, click here.


2020AK06      J.Phys.(London) G47, 05LT01 (2020)

H.Akimune, H.Ejiri, F.Hattori, C.Agodi, M.Alanssari, F.Cappuzzello, D.Carbone, M.Cavallaro, G.Colo, F.Diel, C.A.Douma, D.Frekers, H.Fujita, Y.Fujita, M.Fujiwara, G.Gey, M.N.Harakeh, K.Hatanaka, K.Heguri, M.Holl, A.Inoue, N.Kalantar-Nayestanaki, Y.F.Niu, P.Puppe, P.C.Ries, A.Tamii, V.Werner, K.Zuber

Spin-dipole nuclear matrix element for the double beta decay of 76Ge by the (3He, t) charge-exchange reaction

NUCLEAR REACTIONS 74,76Ge(3He, t), E=420 MeV; measured reaction products; deduced yields, σ(θ), spin-dipole nuclear matrix elements, neutrinoless double-beta decay nuclear matrix elements.

doi: 10.1088/1361-6471/ab7a87
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Data from this article have been entered in the XUNDL database. For more information, click here.


2020DO06      Eur.Phys.J. A 56, 51 (2020)

C.A.Douma, C.Agodi, H.Akimune, M.Alanssari, F.Cappuzzello, D.Carbone, M.Cavallaro, G.Colo, F.Diel, H.Ejiri, D.Frekers, H.Fujita, Y.Fujita, M.Fujiwara, G.Gey, M.N.Harakeh, K.Hatanaka, F.Hattori, K.Heguri, M.Holl, A.Inoue, N.Kalantar-Nayestanaki, Y.F.Niu, P.Puppe, P.C.Ries, A.Tamii, V.Werner, R.G.T.Zegers, K.Zuber

Gamow-Teller strength distributions of 116Sb and 122Sb using the (3He, t) charge-exchange reaction

doi: 10.1140/epja/s10050-020-00044-9
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE2658. Data from this article have been entered in the XUNDL database. For more information, click here.


2019KA15      Eur.Phys.J. A 55, 4 (2019)

D.Kahl, P.J.Woods, Y.Fujita, H.Fujita, K.Abe, T.Adachi, D.Frekers, T.Ito, N.Kikukawa, M.Nagashima, P.Puppe, D.Sera, T.Shima, Y.Shimbara, A.Tamii, J.H.Thies

s-wave resonances for the 18F(p, α)15O reaction in novae

NUCLEAR REACTIONS 18F(p, α)15O;19F(3He, t)19Ne, E=140 MeV/nucleon; measured Et, It(θ); deduced peaks of discrete excited states in 19Ne; deduced 19F, 19Ne levels, J, π, deduced ΔL=0 state at 6.13 MeV which could significantly affect 18F(p, α) astrophysical S-factor, suggested mirror pairs of states. Levels compared with published data. 18F(p, α), E(cm)=0-1 MeV; calculated astrophysical S-factor with different interference signs between L=0 states with possibility of changing temperatures (50-350 MK); deduced resonance parameters (energy, (α- and p-width, ANC)). S-factor compared with other calculations.

doi: 10.1140/epja/i2019-12682-9
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Data from this article have been entered in the XUNDL database. For more information, click here.


2018FR05      Eur.Phys.J. A 54, 177 (2018)

D.Frekers, M.Alanssari

Charge-exchange reactions and the quest for resolution

doi: 10.1140/epja/i2018-12612-5
Citations: PlumX Metrics


2018JO05      Phys.Rev. C 98, 024608 (2018)

L.Jokiniemi, H.Ejiri, D.Frekers, J.Suhonen

Neutrinoless ββ nuclear matrix elements using isovector spin-dipole Jπ = 2- data

RADIOACTIVITY 76Ge, 96Zr, 100Mo, 116Cd, 128,130Te, 136Xe(2β-); calculated nuclear matrix elements 0νββ and 2νββ decay modes using realistic two-body interactions with either Woods-Saxon bases or modified Woods-Saxon bases. Comparison with previous theoretical predictions. 76Ge, 76Se, 96Zr, 96,100Mo, 100Ru, 116Cd, 116Sn, 128,130Te, 128,130,136Xe, 136Ba; calculated neutron and proton pairing gaps, 2- isovector spin-dipole resonance and 1+ Gamow-Teller giant resonance data, isovector spin-dipole 2- strength functions.

doi: 10.1103/PhysRevC.98.024608
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2018MA51      Phys.Rev. C 98, 024617 (2018)

A.J.Mayer, M.Wieser, M.Alanssari, D.Frekers, W.Matthews, J.Dilling, R.I.Thompson

Isotope abundance measurement of the half-life of the ββ-decaying nucleus 96Zr from a 2.68 Gyr zircon sample

RADIOACTIVITY 96Zr, 96Nb(β-); 96Zr(2β-); measured Mo isotopic composition of zircon sample using Thermo Scientific Neptune multicollector inductively coupled plasma mass spectrometer (MC-ICPMS) containing nine Faraday cups, a secondary-electron multiplier, and multi-ion counting (MIC) detectors. Chemical ion-exchange separation of Mo from Zr, Fe, and other elements in zircon reference material; deduced half-life of decay of 96Zr by applying modern isotope-geochemical and chemical separation techniques; estimated lower limit of half-life for β- decay mode, using previously measured half-life for 2νββ decay mode.

doi: 10.1103/PhysRevC.98.024617
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Data from this article have been entered in the XUNDL database. For more information, click here.


2017FR02      Phys.Rev. C 95, 034619 (2017)

D.Frekers, M.Alanssari, H.Ejiri, M.Holl, A.Poves, J.Suhonen

Charge-exchange reactions on double-β decaying nuclei populating Jπ = 2- states

NUCLEAR REACTIONS 76Ge, 82Se, 96Zr, 100Mo, 128,130Te, 136Xe(3He, t), E=420 MeV; measured E(t), I(t), σ(θ) using Grand Raiden spectrometer at RCNP-Osaka. 76As, 82Br, 96Nb, 100Tc, 128,130I, 136Cs; deduced levels, L-transfers by distorted-wave (DW) analysis of σ(θ) distributions, J, π, relative M2 transition strengths. 76Ge, 82Se, 96Zr, 100Mo, 128,130Te, 136Xe; calculated shell-model occupancies near the Fermi surface for ββ-decaying nuclei using the Interacting shell model (ISM). Comparison of transition strengths with microscopic shell model, QRPA, and semimicroscopic FSQP calculations.

doi: 10.1103/PhysRevC.95.034619
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Data from this article have been entered in the XUNDL database. For more information, click here.


2017GA20      Phys.Rev. C 96, 024325 (2017)

A.T.Gallant, M.Alanssari, J.C.Bale, C.Andreoiu, B.R.Barquest, U.Chowdhury, J.Even, A.Finlay, D.Frekers, G.Gwinner, R.Klawitter, B.Kootte, A.A.Kwiatkowski, D.Lascar, K.G.Leach, E.Leistenschneider, A.Lennarz, A.J.Mayer, D.Short, R.Thompson, M.Wieser, D.Lunney, J.Dilling

Mass determination near N=20 for Al and Na isotopes

ATOMIC MASSES 31,32Na, 29,34,35Al; measured cyclotron frequencies and mass excesses by time-of-flight ion-cyclotron-resonance (TOF-ICR) technique using the TITAN Penning trap mass spectrometer at ISAC-TRIUMF; deduced S(2n). Radioactive isotopes produced via the isotope separator on-line (ISOL) technique by a 480-MeV proton beam impinging on a UCx target, followed by the separation of sodium isotopes by surface ionization, and aluminum isotopes by the TRIUMF Resonant Ionization Laser Ion Source (TRILIS). Comparison with previous experimental values and mass evaluations. Systematics of S(2n) values for N=18-25 Na, Mg, and Al isotopic chains.

doi: 10.1103/PhysRevC.96.024325
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2017WI16      Phys.Rev. C 96, 064309 (2017)

K.Win, Y.Fujita, Y.Y.Oo, H.Fujita, Y.F.Niu, T.Adachi, G.P.A.Berg, G.Colo, H.Dohmann, M.Dozono, D.Frekers, E.-W.Grewe, K.Hatanaka, D.Ishikawa, R.Kehl, N.T.Khai, Y.Kalmykov, H.Matsubara, P.von Neumann-Cosel, T.Niizeki, T.Ruhe, Y.Shimbara, K.Suda, A.Tamii, J.Thies, H.P.Yoshida

High-resolution study of Tz = +1 → 0 Gamow-Teller transitions in the 26Mg (3He, t)26Al reaction

NUCLEAR REACTIONS 26Mg(3He, t), E=140 MeV/nucleon; measured triton spectra, σ(θ) using the Grand Raiden spectrometer at RCNP, Japan. 26Al; deduced levels, L-transfers, J, π, widths, analog states, Gamow-Teller transitions, B(GT) strengths. Comparison with previous experimental data, evaluated data in the ENSDF database, and with theoretical calculations using random phase approximation. Discussed isospin symmetry of T=2 Gamow-Teller states by comparing with the results of 26Mg(d, 2He), (t, 3He)26Na reactions.

doi: 10.1103/PhysRevC.96.064309
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Data from this article have been entered in the XUNDL database. For more information, click here.


2016AL03      Phys.Rev.Lett. 116, 072501 (2016)

M.Alanssari, D.Frekers, T.Eronen, L.Canete, J.Dilling, M.Haaranen, J.Hakala, M.Holl, M.Jeskovsky, A.Jokinen, A.Kankainen, J.Koponen, A.J.Mayer, I.D.Moore, D.A.Nesterenko, I.Pohjalainen, P.Povinec, J.Reinikainen, S.Rinta-Antila, P.C.Srivastava, J.Suhonen, R.I.Thompson, A.Voss, M.E.Wieser

Single and Double Beta-Decay Q Values among the Triplet96Zr, 96Nb, and 96Mo

ATOMIC MASSES 96Zr, 96Nb, 96Mo; measured time-of-flight spectra using a Ramsey excitation pattern, cyclotron-frequency ratios; deduced Q-values for β and 2β-decays. Comparison with AME2012, IGISOL-JYFLTRAP facility.

doi: 10.1103/PhysRevLett.116.072501
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2016AL30      Int.J. Mass Spectrom. 406, 1 (2016)

M.Alanssari, D.Frekers, T.Eronen, L.Canete, J.Hakala, M.Holl, A.Jokinen, A.Kankainen, J.Koponen, I.D.Moore, D.A.Nesterenko, I.Pohjalainen, J.Reinikainen, S.Rinta-Antila, A.Voss

Precision 71Ga-71Ge mass-difference measurement

ATOMIC MASSES 71Ga, 71Ge; measured frequencies, TOF; deduced Q-values, solar neutrino flux.

doi: 10.1016/j.ijms.2016.05.019
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2016EJ02      J.Phys.(London) G43, 11LT01 (2016)

H.Ejiri, D.Frekers

Spin dipole nuclear matrix elements for double beta decay nuclei by charge-exchange reactions

RADIOACTIVITY 76Ge, 82Se, 96Zr, 100Mo, 128,130Te, 136Xe(2β-); analyzed experimental data on (3He, t) charge-exchange reactions; deduced spin dipole strengths and matrix elements for double beta-decay using experimental Gamow-Teller and Fermi strengths.

doi: 10.1088/0954-3899/43/11/11LT01
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2016FR06      Phys.Rev. C 94, 014614 (2016)

D.Frekers, M.Alanssari, T.Adachi, B.T.Cleveland, M.Dozono, H.Ejiri, S.R.Elliott, H.Fujita, Y.Fujita, M.Fujiwara, K.Hatanaka, M.Holl, D.Ishikawa, H.Matsubara, H.Okamura, P.Puppe, K.Suda, A.Tamii, J.Thies, H.P.Yoshida

High energy-resolution measurement of the 82Se(3He, t)82Br reaction for double-beta decay and for solar neutrinos

NUCLEAR REACTIONS 82Se(3He, t), E=420 MeV; measured E(t), I(t), σ(θ) using Grand Raiden Spectrometer at RCNP-Osaka cyclotron facility. 82Br; deduced levels, J, π, L-transfer, IAS, 1+ states, Gamow-Teller resonance (GTR), Gamow-Teller strengths B(GT). Distorted-wave (DW) calculations to analyze σ(θ) distributions. 80Se; discussed implications for 2νββ and 0νββ decay modes, possible detector of solar neutrinos; calculated solar neutrino capture rates on 82Se as a function of excitation energy in 82Br from B(GT) values.

doi: 10.1103/PhysRevC.94.014614
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE2520. Data from this article have been entered in the XUNDL database. For more information, click here.


2015FR02      Phys.Rev. C 91, 034608 (2015); Erratum Phys.Rev. C 100, 049901 (2019)

D.Frekers, T.Adachi, H.Akimune, M.Alanssari, B.A.Brown, B.T.Cleveland, H.Ejiri, H.Fujita, Y.Fujita, M.Fujiwara, V.N.Gavrin, M.N.Harakeh, K.Hatanaka, M.Holl, C.Iwamoto, A.Lennarz, A.Okamoto, H.Okamura, T.Suzuki, A.Tamii

Precision evaluation of the 71Ga (νe, e-) solar neutrino capture rate from the (3He, t) charge-exchange reaction

NUCLEAR REACTIONS 71Ga(3He, t)71Ge, E=420 MeV; measured triton spectra, σ(θ) using Grand Raiden spectrometer at RCNP-Osaka facility. 71Ge; deduced levels, J, π, IAS, Gamow-Teller B(GT) transition strengths from analysis based on theoretical form factors and one-body transition densities from the shell-model code NUSHELLX with the GXPF1a interaction in full fp-model space. DWBA analysis of σ(θ) data. 71Ga(ν, e-); deduced solar neutrino capture rates as function of excitation energy in 71Ge from B(GT) values.

doi: 10.1103/PhysRevC.91.034608
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE2269. Data from this article have been entered in the XUNDL database. For more information, click here.


2015JE02      Nucl.Instrum.Methods Phys.Res. A795, 268 (2015)

M.Jeskovsky, D.Frekers, A.Kovacik, P.P.Povinec, P.Puppe, J.Stanicek, I.Sykora, F.Simkovic, J.H.Thies

A search for double-electron capture of 74Se to excited levels using coincidence/anticoincidence gamma-ray spectrometry

RADIOACTIVITY 74Se(2EC); measured decay products, Eγ, Iγ; deduced T1/2 limit. Comparison with available data.

doi: 10.1016/j.nima.2015.05.071
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Data from this article have been entered in the XUNDL database. For more information, click here.


2014KW01      Hyperfine Interactions 225, 143 (2014)

A.A.Kwiatkowski, C.Andreoiu, J.C.Bale, T.Brunner, A.Chaudhuri, U.Chowdhury, P.Delheij, S.Ettenauer, D.Frekers, A.T.Gallant, A.Grossheim, G.Gwinner, F.Jang, A.Lennarz, T.Ma, E.Mane, M.R.Pearson, B.E.Schultz, M.C.Simon, V.V.Simon, J.Dilling

TITAN: An ion trap facility for on-line mass measurement experiments

doi: 10.1007/s10751-013-0892-8
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2014LE02      Hyperfine Interactions 225, 157 (2014)

A.Lennarz, T.Brunner, C.Andreoiu, A.Chaudhuri, U.Chowdhury, P.Delheij, J.Dilling, S.Ettenauer, D.Frekers, A.T.Gallant, A.Grossheim, F.Jang, A.A.Kwiatkowski, T.Ma, E.Mane, M.R.Pearson, B.E.Schultz, M.C.Simon, V.V.Simon

Electron-capture branching ratio measurements of odd-odd intermediate nuclei in double-beta decay at the TITAN facility

RADIOACTIVITY 116In(β-), (EC); measured decay products, Eγ, Iγ, X-rays; deduced isomers, energy levels, J, π. Comparison with available data.

doi: 10.1007/s10751-013-0893-7
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2014LE20      Phys.Rev.Lett. 113, 082502 (2014)

A.Lennarz, A.Grossheim, K.G.Leach, M.Alanssari, T.Brunner, A.Chaudhuri, U.Chowdhury, J.R.C.Lopez-Urrutia, A.T.Gallant, M.Holl, A.A.Kwiatkowski, J.Lassen, T.D.Macdonald, B.E.Schultz, S.Seeraji, M.C.Simon, C.Andreoiu, J.Dilling, D.Frekers

In-Trap Spectroscopy of Charge-Bred Radioactive Ions

RADIOACTIVITY 124In(β-), 124Cs(EC); measured decay products, Eγ, Iγ, X-rays; deduced isomer yields, T1/2, γ-ray energies, branching ratios. Electron-beam ion trap of the TITAN facility at TRIUMF.

doi: 10.1103/PhysRevLett.113.082502
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Data from this article have been entered in the XUNDL database. For more information, click here.


2014MA21      Phys.Rev. C 89, 044318 (2014)

T.D.Macdonald, B.E.Schultz, J.C.Bale, A.Chaudhuri, U.Chowdhury, D.Frekers, A.T.Gallant, A.Grossheim, A.A.Kwiatkowski, A.Lennarz, M.C.Simon, V.V.Simon, J.Dilling

Precision Penning-trap measurement to investigate the role of the51Cr (e-, νe) 51V Q value in the gallium anomaly

ATOMIC MASSES 51Cr, 51V; measured cyclotron-frequencies, TOF-ICR resonances using TITAN system consisting of radio frequency quadrupole (RFQ) beam cooler and buncher, an electron beam ion trap (EBIT), and a Penning trap (MPET) at ISAC-TRIUMF facility; deduced Q value for EC decay of 51Cr. Comparison with AME-2012 evaluation. Relevance to solar neutrino experiments SAGE and GALLEX.

RADIOACTIVITY 51Cr(EC); measured precise Q(EC) value using TITAN system for precise mass measurements at ISAC-TRIUMF facility.

doi: 10.1103/PhysRevC.89.044318
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2013BR16      Eur.Phys.J. A 49, 142 (2013)

T.Brunner, A.Lapierre, C.Andreoiu, M.Brodeur, P.Delheij, S.Ettenauer, D.Frekers, A.T.Gallant, R.Gernhauser, A.Grossheim, R.Krucken, A.Lennarz, D.Lunney, D.Mucher, R.Ringle, M.C.Simon, V.V.Simon, S.K.L.Sjue, K.Zuber, J.Dilling

Trapped-ion decay spectroscopy towards the determination of ground-state components of double-beta decay matrix elements

RADIOACTIVITY 124,125,126Cs(EC), (β+), (IT); measured Eγ, Iγ, X-ray. Method test experiment for possible determination of 2β matrix elements.

doi: 10.1140/epja/i2013-13142-4
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2013FR13      Phys.Lett. B 722, 233 (2013)

D.Frekers, M.C.Simon, C.Andreoiu, J.C.Bale, M.Brodeur, T.Brunner, A.Chaudhuri, U.Chowdhury, J.R.C.Lopez-Urrutia, P.Delheij, H.Ejiri, S.Ettenauer, A.T.Gallant, V.Gavrin, A.Grossheim, M.N.Harakeh, F.Jang, A.A.Kwiatkowski, J.Lassen, A.Lennarz, M.Luichtl, T.Ma, T.D.Macdonald, E.Mane, D.Robertson, B.E.Schultz, V.V.Simon, A.Teigelhofer, J.Dilling

Penning-trap Q-value determination of the 71Ga(ν, e-)71Ge reaction using threshold charge breeding of on-line produced isotopes

ATOMIC MASSES 71Ga, 71Ge; measured TOF, TOF-ICR, ion cyclotron resonance spectra; deduced Q-value and its uncertainty. TITAN Penning trap at ISAC/TRIUMF, comparison with AME data.

doi: 10.1016/j.physletb.2013.04.019
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2013FR14      Nucl.Phys. A916, 219 (2013)

D.Frekers, P.Puppe, J.H.Thies, H.Ejiri

Gamow-Teller strength extraction from (3He, t) reactions

NUCLEAR REACTIONS 48Ca(3He, t), E*=6.677 MeV;76Ge(3He, t), E*=8.308 MeV;128Te(3He, t), E*=11.948 MeV; calculated σ(θ) using DWBA70, DW81 and ACCBA codes; deduced scaling factor, IAS scaling factor. 71Ga, 76Ge, 82Se, 90,92,96Zr, 100Mo, 128,130Te, 136Xe; calculated σ(q=0) for IAS excitation in (3He, t) reactions, Gamow-Teller strength B(GT). Compared with available relevant data, also for (t, 3He), (d, 2He) and (p, n) reactions.

doi: 10.1016/j.nuclphysa.2013.08.006
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2012PU02      Phys.Rev. C 86, 044603 (2012)

P.Puppe, A.Lennarz, T.Adachi, H.Akimune, H.Ejiri, D.Frekers, H.Fujita, Y.Fujita, M.Fujiwara, E.Ganioglu, E.-W.Grewe, K.Hatanaka, R.Hodak, C.Iwamoto, N.T.Khai, A.Okamoto, H.Okamura, P.P.Povinec, G.Susoy, T.Suzuki, A.Tamii, J.H.Thies, M.Yosoi

High resolution (3He, t)experiment on the double-β decaying nuclei 128Te and 130Te

NUCLEAR REACTIONS 128,130Te(3He, t), E=420 MeV; measured triton spectra, σ(θ) using Grand Raiden magnetic spectrometer at RCNP facility. 128,130I; deduced levels, J, π, IAS, B(GT). DWBA analysis. Discussed impact on ββ decay matrix elements for 128,130Te.

doi: 10.1103/PhysRevC.86.044603
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE2390. Data from this article have been entered in the XUNDL database. For more information, click here.


2012TH06      Phys.Rev. C 86, 014304 (2012)

J.H.Thies, D.Frekers, T.Adachi, M.Dozono, H.Ejiri, H.Fujita, Y.Fujita, M.Fujiwara, E.-W.Grewe, K.Hatanaka, P.Heinrichs, D.Ishikawa, N.T.Khai, A.Lennarz, H.Matsubara, H.Okamura, Y.Y.Oo, P.Puppe, T.Ruhe, K.Suda, A.Tamii, H.P.Yoshida, R.G.T.Zegers

The (3He, t) reaction on 76Ge, and the double-β-decay matrix element

NUCLEAR REACTIONS 76Ge(3He, t)76As, E=420 MeV; measured triton spectra, σ(θ) using Grand Raiden spectrometer at RCNP facility. 76As; deduced levels, L-transfers, J, π, IAS, GT resonance (GTR) and the spin-dipole resonance (SDR), B(GT) values. DWBA analysis of Σ(θ) data. Comparison of B(GT)- distributions with B(GT)+ from 76Se(d, 2He)76As reaction. Discussed impact on double-beta decay matrix elements for 76Ge decay.

RADIOACTIVITY 76Ge(2β-); analyzed double beta-decay matrix elements.

doi: 10.1103/PhysRevC.86.014304
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE2383. Data from this article have been entered in the XUNDL database. For more information, click here.


2012TH08      Phys.Rev. C 86, 044309 (2012)

J.H.Thies, T.Adachi, M.Dozono, H.Ejiri, D.Frekers, H.Fujita, Y.Fujita, M.Fujiwara, E.-W.Grewe, K.Hatanaka, P.Heinrichs, D.Ishikawa, N.T.Khai, A.Lennarz, H.Matsubara, H.Okamura, Y.Y.Oo, P.Puppe, T.Ruhe, K.Suda, A.Tamii, H.P.Yoshida, R.G.T.Zegers

High-resolution 100Mo(3He, t)100Tc charge-exchange experiment and the impact on double-β decays and neutrino charged-current reactions

NUCLEAR REACTIONS 100Mo(3He, t), E=420 MeV; measured triton spectra, σ(θ) at RCNP facility. 100Tc; deduced levels, IAS, J, π, B(GT). Discussed impact on the matrix elements for 2νββ decay. DWBA analysis.

doi: 10.1103/PhysRevC.86.044309
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2012TH12      Phys.Rev. C 86, 054323 (2012)

J.H.Thies, P.Puppe, T.Adachi, M.Dozono, H.Ejiri, D.Frekers, H.Fujita, Y.Fujita, M.Fujiwara, E.-W.Grewe, K.Hatanaka, P.Heinrichs, D.Ishikawa, N.T.Khai, A.Lennarz, H.Matsubara, H.Okamura, Y.Y.Oo, T.Ruhe, K.Suda, A.Tamii, H.P.Yoshida, R.G.T.Zegers

High-resolution 96Zr(3He, t) experiment and the matrix element for double-β decay

NUCLEAR REACTIONS 90,92,96Zr(3He, t), E=420 MeV; measured triton spectra, σ(θ) using Grand Raiden spectrometer at RCNP facility. 90,92,96Nb; deduced levels, IAS, L-transfers, J, π, B(GT), nuclear matrix element for 2νββ decay of 96Zr. 91,94Zr(3He, t), E=420 MeV; measured triton spectrum; deduced IAS in 91,94Nb. Comparison with shell model calculations, and with previous study of 96Mo(d, 2He)96Nb reaction.

doi: 10.1103/PhysRevC.86.054323
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2011BR13      Hyperfine Interactions 199, 191 (2011)

T.Brunner, M.Brodeur, P.Delheij, S.Ettenauer, D.Frekers, A.T.Gallant, R.Krucken, A.Lapierre, D.Lunney, R.Ringle, V.V.Simon, J.Dilling

In-trap decay spectroscopy for 2νββ decay experiments

RADIOACTIVITY 124,126Cs(EC); measured Eγ, Iγ, X-rays, Eβ, Iβ; deduced possibility of electron capture branching ratio measurement of $^100$Tc. Penning trap.

doi: 10.1007/s10751-011-0313-9
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2011FR08      Nucl.Phys. A860, 1 (2011)

D.Frekers, P.Puppe, J.H.Thies, P.P.Povinec, F.Simkovic, J.Stanicek, I.Sykora

Double-electron capture of 74Se and the search for neutrinoless decay

RADIOACTIVITY 74Se(2EC); measured Eγ, Iγ, γγ-coin; deduced T1/2 limit.

doi: 10.1016/j.nuclphysa.2011.05.002
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2011FR15      Phys.Lett. B 706, 134 (2011)

D.Frekers, H.Ejiri, H.Akimune, T.Adachi, B.Bilgier, B.A.Brown, B.T.Cleveland, H.Fujita, Y.Fujita, M.Fujiwara, E.Ganioglu, V.N.Gavrin, E.-W.Grewe, C.J.Guess, M.N.Harakeh, K.Hatanaka, R.Hodak, M.Holl, C.Iwamoto, N.T.Khai, H.C.Kozer, A.Lennarz, A.Okamoto, H.Okamura, P.P.Povinec, P.Puppe, F.Simkovic, G.Susoy, T.Suzuki, A.Tamii, J.H.Thies, J.Van de Walle, R.G.T.Zegers

The 71Ga(3He, t) reaction and the low-energy neutrino response

NUCLEAR REACTIONS 71Ga(3He, t), E=420 MeV; measured reaction products; deduced isobaric-analogue resonance yields, σ(θ), Gamow-Teller strength values. SAGE and GALLEX calibration implications.

doi: 10.1016/j.physletb.2011.10.061
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2011GU14      Phys.Rev. C 83, 064318 (2011)

C.J.Guess, T.Adachi, H.Akimune, A.Algora, S.M.Austin, D.Bazin, B.A.Brown, C.Caesar, J.M.Deaven, H.Ejiri, E.Estevez, D.Fang, A.Faessler, D.Frekers, H.Fujita, Y.Fujita, M.Fujiwara, G.F.Grinyer, M.N.Harakeh, K.Hatanaka, C.Herlitzius, K.Hirota, G.W.Hitt, D.Ishikawa, H.Matsubara, R.Meharchand, F.Molina, H.Okamura, H.J.Ong, G.Perdikakis, V.Rodin, B.Rubio, Y.Shimbara, G.Susoy, T.Suzuki, A.Tamii, J.H.Thies, C.Tur, N.Verhanovitz, M.Yosoi, J.Yurkon, R.G.T.Zegers, J.Zenihiro

The 150Nd(3He, t) and 150Sm(t, 3He) reactions with applications to ββ decay of 150Nd

NUCLEAR REACTIONS 150Nd(3He, t), E=140 MeV/nucleon; 150Sm(t, 3He), E=115 MeV/nucleon; measured triton and 3He spectra, excitation energy spectra, differential cross sections, σ(θ) 150Pm; deduced B(GT) strengths; isovector spin-flip giant monopole resonance (IVSGMR). Grand Raiden Spectrometer for (3He, t) and S-800 spectrometer for (t, 3He). Comparison with Quasi-Particle Random Phase Approximation (QRPA) calculations. Application to double β decay of 150Nd.

RADIOACTIVITY 150Nd(2β-); calculated matrix elements for 0νββ and 2νββ decay modes using QRPA calculations. Comparison with experimental data.

doi: 10.1103/PhysRevC.83.064318
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2011KR07      Nucl.Phys. A859, 140 (2011)

M.I.Krivoruchenko, F.Simkovic, D.Frekers, A.Faessler

Resonance enhancement of neutrinoless double electron capture

RADIOACTIVITY 96Ru, 106Cd, 124Xe, 136Ce, 152Gd, 156Dy, 154Er, 168Yb, 180W, 184Os, 190Pt(2β+); 78Kr, 96Ru, 106Cd, 112Sn, 130Ba, 162Er, 184Os(2EC); calculated T1/2 limits, nuclear matrix elements; deduced ν mass limits.

doi: 10.1016/j.nuclphysa.2011.04.009
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2011PU06      Phys.Rev. C 84, 051305 (2011)

P.Puppe, D.Frekers, T.Adachi, H.Akimune, N.Aoi, B.Bilgier, H.Ejiri, H.Fujita, Y.Fujita, M.Fujiwara, E.Ganioglu, M.N.Harakeh, K.Hatanaka, M.Holl, H.C.Kozer, J.Lee, A.Lennarz, H.Matsubara, K.Miki, S.E.A.Orrigo, T.Suzuki, A.Tamii, J.H.Thies

High-resolution (3He, t) reaction on the double-β decaying nucleus 136Xe

NUCLEAR REACTIONS 136Xe(3He, t), E=420 MeV; measured E(t), I(t), σ(θ) using Grand-Raiden spectrometer. 136Cs; deduced levels, J, π, l-values, Gamow-Teller (GT) transition strengths. DWBA analysis. Relevance to double beta decay matrix elements for 136Xe.

doi: 10.1103/PhysRevC.84.051305
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2010FR01      Prog.Part.Nucl.Phys. 64, 281 (2010)

D.Frekers

Nuclear reactions and the double beta decay

NUCLEAR REACTIONS 76Se(d, 2p), 100Mo(3He, t), E not given; analyzed charge-exchange reaction data; deduced nuclear matrix elements for 2β-decay.

doi: 10.1016/j.ppnp.2009.12.029
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2009PO07      Phys.Rev. C 79, 064312 (2009)

L.Popescu, T.Adachi, G.P.A.Berg, P.von Brentano, D.Frekers, D.De Frenne, K.Fujita, Y.Fujita, E.-W.Grewe, M.N.Harakeh, K.Hatanaka, E.Jacobs, K.Nakanishi, A.Negret, Y.Sakemi, Y.Shimbara, Y.Shimizu, Y.Tameshige, A.Tamii, M.Uchida, H.J.Wortche, M.Yosoi

Gamow-Teller transitions studied in the high-resolution 64Ni(3He, t)64Cu reaction

NUCLEAR REACTIONS 64Ni(3He, t), E=140 MeV/nucleon; measured triton spectra, σ, σ(θ), L. 64Cu; deduced levels, J, π, Gamow-Teller strengths, and Gamow-Teller Giant resonance. Comparison with Ikeda sum rule predictions.

doi: 10.1103/PhysRevC.79.064312
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2009YA07      Phys.Rev.Lett. 103, 012503 (2009)

K.Yako, M.Sasano, K.Miki, H.Sakai, M.Dozono, D.Frekers, M.B.Greenfield, K.Hatanaka, E.Ihara, M.Kato, T.Kawabata, H.Kuboki, Y.Maeda, H.Matsubara, K.Muto, S.Noji, H.Okamura, T.H.Okabe, S.Sakaguchi, Y.Sakemi, Y.Sasamoto, K.Sekiguchi, Y.Shimizu, K.Suda, Y.Tameshige, A.Tamii, T.Uesaka, T.Wakasa, H.Zheng

Gamow-Teller Strength Distributions in 48Sc by the 48Ca(p, n) and 48Ti(n, p) Reactions and Two-Neutrino Double-β Decay Nuclear Matrix Elements

NUCLEAR REACTIONS 48Ca(p, n), 48Ti(n, p), E=300 MeV; measured Ep, Ip, En, In; deduced σ(E, θ), Gamow-Teller strengths. Comparison with GXPF1A shell model.

doi: 10.1103/PhysRevLett.103.012503
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2008DO23      Phys.Rev. C 78, 041602 (2008)

H.Dohmann, C.Baumer, D.Frekers, E.-W.Grewe, M.N.Harakeh, S.Hollstein, H.Johansson, L.Popescu, S.Rakers, D.Savran, H.Simon, J.H.Thies, A.M.van den Berg, H.J.Wortche, A.Zilges

The (d, 2He) reaction on 96Mo and the double-β decay matrix elements for 96Zr

NUCLEAR REACTIONS 96Mo(d, 2He), E=183.5 MeV; measured charged particle spectra, σ(θ). 96Nb; deduced levels, J, π, B(GT).

RADIOACTIVITY 96Zr(2β-); analyzed nuclear matrix elements for 2νββ and 0νββ decay modes.

doi: 10.1103/PhysRevC.78.041602
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2008GR10      Phys.Rev. C 77, 064303 (2008)

E.-W.Grewe, C.Baumer, H.Dohmann, D.Frekers, M.N.Harakeh, S.Hollstein, H.Johansson, K.Langanke, G.Martinez-Pinedo, F.Nowacki, I.Petermann, L.Popescu, S.Rakers, D.Savran, K.Sieja, H.Simon, J.H.Thies, A.M.van den Berg, H.J.Wortche, A.Zilges

Studies on the double-β decay nucleus 64Zn using the (d, 2He) reaction

NUCLEAR REACTIONS 64Zn(d, 2He), E=183 MeV; measured charged particle energies, angular distributions, σ(θ). 64Cu; deduced levels, J, π, Gamow-Teller strengths. 64Ni(3He, t); analyzed Gamow-Teller strength distribution. Comparison with shell model calculations.

doi: 10.1103/PhysRevC.77.064303
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2008GR19      Phys.Rev. C 78, 044301 (2008)

E.-W.Grewe, C.Baumer, H.Dohmann, D.Frekers, M.N.Harakeh, S.Hollstein, H.Johansson, L.Popescu, S.Rakers, D.Savran, H.Simon, J.H.Thies, A.M.van den Berg, H.J.Wortche, A.Zilges

The (d, 2He) reaction on 76Se and the double-β-decay matrix elements for A = 76

NUCLEAR REACTIONS 76Se(d, 2He), E=183 MeV; measured particle spectra, σ(θ). 76As; deduced levels, J, π, B(GT), DWBA analysis. Comparison with 76Se(n, p), 76Ge(p, n) reactions.

doi: 10.1103/PhysRevC.78.044301
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2008VO01      J.Phys.(London) G35, 014034 (2008)

C.Vockenhuber, C.O.Ouellet, L.-S.The, L.Buchmann, J.Caggiano, A.A.Chen, J.M.D'Auria, B.Davids, L.Fogarty, D.Frekers, A.Hussein, D.A.Hutcheon, W.Kutschera, D.Ottewell, M.Paul, M.M.Pavan, J.Pearson, C.Ruiz, G.Ruprecht, M.Trinczek, A.Wallner

40Ca(α, γ)44Ti and the production of 44Ti in supernovae

NUCLEAR REACTIONS 4He(40Ca, γ), E=600-1150 keV/nucleon; measured Eγ, γγ-, (recoil)γ-coin, excitation function.

doi: 10.1088/0954-3899/35/1/014034
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2007BE18      Phys.Lett. B 645, 128 (2007); Erratum Phys.Lett. B 671, 496 (2009)

F.Beck, D.Frekers, P.von Neumann-Cosel, A.Richter, N.Ryezayeva, I.J.Thompson

Spectroscopic factor of the 7He ground state

NUCLEAR REACTIONS 7Li(d, 2p), E=171 MeV; analysed σ(E, θ); deduced resonance width, spectroscopic factor. R-matrix analysis.

doi: 10.1016/j.physletb.2006.12.036
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2007FR09      Can.J.Phys. 85, 57 (2007)

D.Frekers, J.Dilling, I.Tanihata

Electron capture branching ratios for the odd-odd intermediate nuclei in double-beta decay using the TITAN ion trap facility

NUCLEAR STRUCTURE 76As, 82mBr, 100Tc, 110Ag, 114In, 116In, 128I; analyzed electron-capture and charge-exchange reaction data for the odd-odd intermediate nuclei in 2β-decay.

doi: 10.1139//P07-009
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2007GR22      Phys.Rev. C 76, 054307 (2007)

E.-W.Grewe, D.Frekers, S.Rakers, T.Adachi, C.Baumer, N.T.Botha, H.Dohmann, H.Fujita, Y.Fujita, K.Hatanaka, K.Nakanishi, A.Negret, R.Neveling, L.Popescu, Y.Sakemi, Y.Shimbara, Y.Shimizu, F.D.Smit, Y.Tameshige, A.Tamii, J.Thies, P.von Brentano, M.Yosoi, R.G.T.Zegers

(3He, t) reaction on the double β decay nucleus 48Ca and the importance of nuclear matrix elements

NUCLEAR REACTIONS 48Ca(3He, t), E=420 MeV; measured charged particles, angular distributions; calculated Gamow-Teller strengths. 48Sc; deduced levels, J, π. Compared with 48Ca(p, n), E=134 MeV and 48Ca(d, 2He), E=183 MeV reactions. 48Ca; implications for 2β decay.

doi: 10.1103/PhysRevC.76.054307
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2007HO13      Phys.Rev. C 76, 014314 (2007)

F.Hofmann, C.Baumer, A.M.van den Berg, D.Frekers, V.M.Hannen, M.N.Harakeh, M.de Huu, Y.Kalmykov, P.von Neumann-Cosel, V.Yu.Ponomarev, S.Rakers, B.Reitz, A.Richter, K.Schweda, A.Shevchenko, J.Wambach, H.J.Wortche

Proton scattering at intermediate energies on 58Ni: How well is it understood?

NUCLEAR REACTIONS 58Ni(p, p'), E=172 MeV; measured cross sections, spin flip cross sections and spin-flip probabilities. Compared results to model calculations.

doi: 10.1103/PhysRevC.76.014314
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2007PO06      Phys.Rev. C 75, 054312 (2007)

L.Popescu, C.Baumer, A.M.van den Berg, D.Frekers, D.De Frenne, Y.Fujita, E.W.Grewe, P.Haefner, M.N.Harakeh, M.Hunyadi, M.A.de Huu, E.Jacobs, H.Johansson, A.Korff, A.Negret, P.von Neumann-Cosel, S.Rakers, A.Richter, N.Ryezayeva, A.Shevchenko, H.Simon, H.J.Wortche

Low-lying GT+ strength in 64Co studied via the 64Ni(d, 2He)64Co reaction

NUCLEAR REACTIONS 64Ni(d, 2p), E=171 MeV; measured σ and angular distributions. Deduced GT strength to low lying states.

doi: 10.1103/PhysRevC.75.054312
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2007SA47      Nucl.Phys. A788, 76c (2007)

M.Sasano, H.Sakai, K.Yako, H.Kuboki, K.Miki, S.Noji, T.Wakasa, M.Dozono, K.Sekiguchi, T.Uesaka, T.Kawabata, Y.Maeda, S.Sakaguchi, Y.Sasamoto, K.Suda, K.Itoh, K.Hatanaka, H.Okamura, A.Tamii, K.Muto, D.Frekers, M.B.Greenfield

Determination of the Gamow-Teller transition strength to 116In(g.s.) by the 116Cd(p, n) reaction at 300 MeV for the study of the nuclear matrix element of the two-neutrino double beta decay

NUCLEAR REACTIONS 116Cd(p, n), E=300 MeV; measured excitation energy spectrum. 116In deduced Gamow-Teller strength distribution, nuclear matrix elements. Comparison with other data.

doi: 10.1016/j.nuclphysa.2007.01.051
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2007VO03      Nucl.Instrum.Methods Phys.Res. B259, 688 (2007)

C.Vockenhuber, C.O.Ouellet, L.Buchmann, J.Caggiano, A.A.Chen, J.M.D'Auria, D.Frekers, A.Hussein, D.A.Hutcheon, W.Kutschera, K.Jayamanna, D.Ottewell, M.Paul, J.Pearson, C.Ruiz, G.Ruprecht, M.Trinczek, A.Wallner

The 40Ca(α, γ)44Ti reaction at DRAGON

NUCLEAR REACTIONS 4He(40Ca, γ)44Ti, E=1.135 MeV/nucleon; measured yield and resonance strength at DRAGON recoil mass spectrometer.

doi: 10.1016/j.nimb.2007.01.222
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2007VO06      Phys.Rev. C 76, 035801 (2007)

C.Vockenhuber, C.O.Ouellet, L.-S.The, L.Buchmann, J.Caggiano, A.A.Chen, H.Crawford, J.M.D'Auria, B.Davids, L.Fogarty, D.Frekers, A.Hussein, D.A.Hutcheon, W.Kutschera, A.M.Laird, R.Lewis, E.O'Connor, D.Ottewell, M.Paul, M.M.Pavan, J.Pearson, C.Ruiz, G.Ruprecht, M.Trinczek, B.Wales, A.Wallner

Measurement of the 40Ca(α, γ)44Ti reaction relevant for supernova nucleosynthesis

NUCLEAR REACTIONS 4He(40Ca, γ)44Ti, E=0.60-1.15 MeV/nucleon; measured recoil energies, yields, and cross section.

doi: 10.1103/PhysRevC.76.035801
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2006BA40      Phys.Rev. C 74, 015802 (2006)

A.Bartlett, J.Gorres, G.J.Mathews, K.Otsuki, M.Wiescher, D.Frekers, A.Mengoni, J.Tostevin

Two-neutron capture reactions and the r process

NUCLEAR REACTIONS 4He(2n, γ), 6He(α, n), E(cm)=0-4 MeV; calculated σ, astrophysical reaction rates. Implications for r-process nucleosynthesis discussed.

doi: 10.1103/PhysRevC.74.015802
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2006FR03      Prog.Part.Nucl.Phys. 57, 217 (2006)

D.Frekers

Facets of charge-exchange reactions - from astrophysics to double beta decay

NUCLEAR REACTIONS 61Ni, 57Fe, 48Ti(d, 2p), E=183 MeV; 48Ca(3He, t), E=420 MeV; analyzed σ(E, θ), Gamow-Teller strength distributions.

RADIOACTIVITY 48Ca(2β-); calculated 2νββ-decay T1/2.

doi: 10.1016/j.ppnp.2005.11.019
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2006GR08      Prog.Part.Nucl.Phys. 57, 260 (2006)

E.-W.Grewe, D.Frekers

Measurements of 2νββ decay-matrix elements for mass A = 64, 76 and A = 96 through charge-exchange reactions

NUCLEAR REACTIONS 64Zn, 76Se, 96Mo(d, 2p), E not given; 64Ni(3He, t), E not given; analyzed σ(E, θ); deduced Gamow-Teller strength distributions, 2β-decay matrix elements.

doi: 10.1016/j.ppnp.2005.12.007
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2006GU02      Phys.Rev. C 73, 014616 (2006)

J.Guillot, S.Gales, D.Beaumel, S.Fortier, E.Rich, N.Van Giai, G.Colo, A.M.van den Berg, S.Brandenburg, B.Davids, M.N.Harakeh, M.Hunyadi, M.de Huu, S.Y.van der Werf, H.J.Wortche, C.Baumer, D.Frekers, E.-W.Grewe, P.Haefner, B.C.Junk, M.Fujiwara

The (t, 3He) reaction at 43 MeV/nucleon on 48Ca and 58Ni: Results and microscopic interpretation

NUCLEAR REACTIONS 12C, 48Ca, 58Ni(t, 3He), E=43 MeV/nucleon; measured excitation energy spectra, σ(E, θ). 48K, 58Co deduced giant resonance features.

doi: 10.1103/PhysRevC.73.014616
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2006MA95      Nucl.Phys. A777, 395 (2006)

G.Martinez-Pinedo, M.Liebendorfer, D.Frekers

Nuclear input for core-collapse models

doi: 10.1016/j.nuclphysa.2006.02.014
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2006NE06      Phys.Rev.Lett. 97, 062502 (2006)

A.Negret, T.Adachi, B.R.Barrett, C.Baumer, A.M.van den Berg, G.P.A.Berg, P.von Brentano, D.Frekers, D.De Frenne, H.Fujita, K.Fujita, Y.Fujita, E.-W.Grewe, P.Haefner, M.N.Harakeh, K.Hatanaka, K.Heyde, M.Hunyadi, E.Jacobs, Y.Kalmykov, A.Korff, K.Nakanishi, P.Navratil, P.von Neumann-Cosel, L.Popescu, S.Rakers, A.Richter, N.Ryezayeva, Y.Sakemi, A.Shevchenko, Y.Shimbara, Y.Shimizu, Y.Tameshige, A.Tamii, M.Uchida, J.Vary, H.J.Wortche, M.Yosoi, L.Zamick

Gamow-Teller Strengths in the A = 14 Multiplet: A Challenge to the Shell Model

NUCLEAR REACTIONS 14N(d, 2p), E=175 MeV; 14N(3He, t), E=420 MeV; measured excitation energy spectra, σ(E, θ); deduced Gamow-Teller strength distributions. Comparison with no-core shell model predictions.

doi: 10.1103/PhysRevLett.97.062502
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2006RU09      Phys.Rev.Lett. 96, 252501 (2006)

C.Ruiz, A.Parikh, J.Jose, L.Buchmann, J.A.Caggiano, A.A.Chen, J.A.Clark, H.Crawford, B.Davids, J.M.D'Auria, C.Davis, C.Deibel, L.Erikson, L.Fogarty, D.Frekers, U.Greife, A.Hussein, D.A.Hutcheon, M.Huyse, C.Jewett, A.M.Laird, R.Lewis, P.Mumby-Croft, A.Olin, D.F.Ottewell, C.V.Ouellet, P.Parker, J.Pearson, G.Ruprecht, M.Trinczek, C.Vockenhuber, C.Wrede

Measurement of the Ec.m. = 184 keV Resonance Strength in the 26gAl(p, γ)27Si Reaction

NUCLEAR REACTIONS 1H(26Al, γ), E=5.122, 5.226, 5.850 MeV; measured Eγ, (recoil)γ-coin. 26Al(p, γ), E(cm) ≈ 184 keV; deduced resonance strength. Astrophysical implications discussed.

doi: 10.1103/PhysRevLett.96.252501
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2006RY03      Phys.Lett. B 639, 623 (2006)

N.Ryezayeva, C.Baumer, A.M.van den Berg, L.V.Chulkov, D.Frekers, D.De Frenne, E.-W.Grewe, P.Haefner, E.Jacobs, H.Johanson, Y.Kalmykov, A.Negret, P.von Neumann-Cosel, L.Popescu, S.Rakers, A.Richter, G.Schrieder, A.Shevchenko, H.Simon, H.J.Wortche

Search for a low-energy resonance in 7He with the 7Li(d, 2He) reaction

NUCLEAR REACTIONS 6,7Li(d, 2p), E=171 MeV; analysed σ(θ, E'); deduced B(GT). DWBA analysis.

doi: 10.1016/j.physletb.2006.06.081
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2005BA14      Phys.Rev. C 71, 024603 (2005); Erratum Phys.Rev. C 71, 029903 (2005)

C.Baumer, A.M.van den Berg, B.Davids, D.Frekers, D.De Frenne, E.-W.Grewe, P.Haefner, M.N.Harakeh, F.Hofmann, S.Hollstein, M.Hunyadi, M.A.de Huu, E.Jacobs, B.C.Junk, A.Korff, K.Langanke, G.Martinez-Pinedo, A.Negret, P.von Neumann-Cosel, L.Popescu, S.Rakers, A.Richter, H.J.Wortche

Determination of the Gamow-Teller strength distribution from the odd-odd nucleus 50V measured through 50V(d, 2He)50Ti and astrophysical implications

NUCLEAR REACTIONS 50V(d, 2p), E=171 MeV; measured Ep, pp-coin, σ(E, θ). 50V deduced Gamow-Teller strength distribution. Comparison with model predictions.

doi: 10.1103/PhysRevC.71.024603
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2005BA43      Phys.Rev. C 71, 044003 (2005)

C.Baumer, D.Frekers, E.-W.Grewe, P.Haefner, S.Hollstein, B.C.Junk, A.Korff, S.Rakers, R.Schmidt, A.M.van den Berg, B.Davids, M.N.Harakeh, M.Hunyadi, M.A.de Huu, H.J.Wortche, N.Blasi, D.De Frenne, E.Jacobs, A.Negret, L.Popescu, R.De Leo, F.Hofmann, P.von Neumann-Cosel, A.Richter

Measurement of the 2H(d, 2He)2n reaction at Ed = 171 MeV and implications for the neutron-neutron scattering length

NUCLEAR REACTIONS 2H(d, 2p), E=171 MeV; measured Ep, pp-coin, σ(θ); deduced neutron-neutron scattering length.

doi: 10.1103/PhysRevC.71.044003
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2005FR11      Nucl.Phys. A752, 580c (2005)

D.Frekers

Weak interaction processes in supernovae: New probes using charge exchange reaction at intermediate energies

NUCLEAR REACTIONS 61Ni, 57Fe(d, 2p), E=183 MeV; 56Fe(d, 2p), E=172 MeV; 50V(d, 2p), E not given; analyzed particle spectra, Gamow-Teller strength distributions.

doi: 10.1016/j.nuclphysa.2005.02.134
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2005GU11      Nucl.Phys. A752, 349c (2005)

J.Guillot, C.Baumer, D.Beaumel, A.M.van den Berg, S.Brandenburg, G.Colo, B.Davids, S.Fortier, D.Frekers, E.-W.Grewe, M.Fujiwara, S.Gales, P.Haefner, M.N.Harakeh, M.Hunyadi, M.de Huu, B.C.Junk, E.Rich, N.Van Giai, S.Y.van der Werf, H.J.Wortche

Investigation of Isovector Excitations via the (t, 3He) reaction at Et=43 MeV/u on 58Ni and 48Ca targets: microscopic interpretation

NUCLEAR REACTIONS 48Ca, 58Ni(t, 3He), E=130 MeV; analyzed particle spectra, σ(θ); deduced resonance features.

doi: 10.1016/j.nuclphysa.2005.02.044
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2005HA03      Phys.Rev. C 71, 014606 (2005)

M.Hagemann, C.Baumer, A.M.van den Berg, D.De Frenne, D.Frekers, V.M.Hannen, M.N.Harakeh, J.Heyse, M.A.de Huu, E.Jacobs, K.Langanke, G.Martinez-Pinedo, A.Negret, L.Popescu, S.Rakers, R.Schmidt, H.J.Wortche

Spin-isospin excitations in the medium-mass nucleus 58Co investigated with the (d, 2He) reaction

NUCLEAR REACTIONS 58Ni(d, 2p), E=170 MeV; measured Ep, pp-coin, σ(E, θ). 58Co deduced levels, Gamow-Teller strengths, related features. 58Ni, 58Co deduced analog states Coulomb displacement energy. Comparison with large-scale shell model calculations.

doi: 10.1103/PhysRevC.71.014606
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2005HO10      Phys.Lett. B 612, 165 (2005)

F.Hofmann, C.Baumer, A.M.van den Berg, D.Frekers, V.M.Hannen, M.N.Harakeh, M.A.de Huu, Y.Kalmykov, P.von Neumann-Cosel, V.Yu.Ponomarev, S.Rakers, B.Reitz, A.Richter, A.Shevchenko, K.Schweda, J.Wambach, H.J.Wortche

Polarized proton scattering on 58Ni at small momentum transfer: A test of the microscopic optical model and effective interactions

NUCLEAR REACTIONS 58Ni(polarized p, p'), (polarized p, p), E=172 MeV; measured elastic and inelastic σ(E, θ), analyzing powers. Comparison with model predictions.

doi: 10.1016/j.physletb.2005.03.020
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2005NE14      J.Phys.(London) G31, S1931 (2005)

A.Negret, T.Adachi, C.Baumer, A.M.van den Berg, G.P.A.Berg, P.von Brentano, D.Frekers, D.De Frenne, K.Fujita, Y.Fujita, E.-W.Grewe, P.Haefner, K.Hatanaka, M.Hunyadi, E.Jacobs, A.Korff, K.Nakanishi, L.Popescu, S.Rakers, Y.Sakemi, Y.Shimbara, Y.Shimizu, Y.Tameshige, A.Tamii, M.Uchida, H.J.Wortche, M.Yosoi

High resolution study of the Gamow-Teller strength distribution starting from the ground state of 14N in the β- and β+ directions

NUCLEAR REACTIONS 14N(d, 2p), E=170 MeV; 14N(3He, t), E=420 MeV; measured excitation energy spectra; deduced isospin symmetry features.

doi: 10.1088/0954-3899/31/10/104
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2005RA13      Phys.Rev. C 71, 054313 (2005)

S.Rakers, C.Baumer, A.M.van den Berg, B.Davids, D.Frekers, D.De Frenne, E.-W.Grewe, P.Haefner, M.N.Harakeh, S.Hollstein, M.Hunyadi, E.Jacobs, B.C.Junk, A.Korff, A.Negret, L.Popescu, H.J.Wortche

Low-lying GT+ strength in 116In from a (d, 2He) reaction experiment and its implications for 116Cd double β decay

NUCLEAR REACTIONS 116Sn(d, 2p), E=183 MeV; measured Ep, σ(E, θ). 116In levels deduced Gamow-Teller strength distribution. 116Cd deduced 2β-decay matrix elements.

doi: 10.1103/PhysRevC.71.054313
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2004FR09      Nucl.Phys. A731, 76 (2004)

D.Frekers

Facets of (d, 2He) Charge-Exchange Reactions at Intermediate Energies

doi: 10.1016/j.nuclphysa.2003.11.020
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2004GR18      Phys.Rev. C 69, 064325 (2004)

E.W.Grewe, C.Baumer, A.M.van den Berg, N.Blasi, B.Davids, D.De Frenne, D.Frekers, P.Haefner, M.N.Harakeh, M.Hunyadi, E.Jacobs, B.Junk, A.Korff, A.Negret, P.von Neumann-Cosel, L.Popescu, S.Rakers, H.J.Wortche

Gamow-Teller transitions to 32P studied through the 32S(d, 2He) reaction at Ed = 170 MeV

NUCLEAR REACTIONS 32S(d, 2p), E=170 MeV; measured Ep, pp-coin, σ(θ). 32P levels deduced B(GT), analog states. Comparison with previous results, shell-model calculations.

doi: 10.1103/PhysRevC.69.064325
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2004HA12      J.Phys.(London) G30, 481 (2004)

S.Hamieh, H.J.Wortche, C.Baumer, A.M.van den Berg, D.Frekers, M.N.Harakeh, J.Heyse, M.Hunyadi, M.A.de Huu, C.Polachic, S.Rakers, C.Rangacharyulu

Testing quantum correlations with nuclear probes

NUCLEAR REACTIONS 1H, 12C(d, 2p), E=172 MeV; measured proton spectra, pp-coin, spin correlations. Application to quantum communication technology discussed.

doi: 10.1088/0954-3899/30/4/007
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2004KO64      Phys.Rev. C 70, 067601 (2004)

A.Korff, P.Haefner, C.Baumer, A.M.van den Berg, N.Blasi, B.Davids, D.De Frenne, R.de Leo, D.Frekers, E.-W.Grewe, M.N.Harakeh, F.Hofmann, M.Hunyadi, E.Jacobs, B.C.Junk, A.Negret, P.von Neumann-Cosel, L.Popescu, S.Rakers, A.Richter, H.J.Wortche

Deuteron elastic and inelastic scattering at intermediate energies from nuclei in the mass range 6 ≤ A ≤ 116

NUCLEAR REACTIONS 6Li, 16O, 32S, 50,51V, 70,72Ge(d, d), (d, d'), E=171 MeV; 90Zr, 116Sn(d, d), (d, d'), E=183 MeV; measured σ(θ); deduced optical model parameters.

doi: 10.1103/PhysRevC.70.067601
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2004PO03      Phys.Lett. A 323, 176 (2004)

C.Polachic, C.Rangacharyulu, A.M.van den Berg, S.Hamieh, M.N.Harakeh, M.Hunyadi, M.A.de Huu, H.J.Wortche, J.Heyse, C.Baumer, D.Frekers, S.Rakers, J.A.Brooke, P.Busch

Polarization correlations of 1S0 proton pairs as tests of hidden-variable theories

NUCLEAR REACTIONS 1H, 12C(d, 2p), E=172 MeV; measured proton pair polarization correlations. Comparison with Bell and Wigner-Belinfante inequalities.

doi: 10.1016/j.physleta.2004.01.073
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2004RA26      Phys.Rev. C 70, 054302 (2004)

S.Rakers, C.Baumer, A.M.van den Berg, B.Davids, D.Frekers, D.De Frenne, Y.Fujita, E.-W.Grewe, P.Haefner, M.N.Harakeh, M.Hunyadi, E.Jacobs, H.Johansson, B.C.Junk, A.Korff, A.Negret, L.Popescu, H.Simon, H.J.Wortche

Nuclear matrix elements for the 48Ca two-neutrino double-β decay from high-resolution charge-exchange reactions

NUCLEAR REACTIONS 48Ti(d, 2p), E=183 MeV; measured Ep, σ(E, θ); 48Ca(p, n), E=134 MeV; analyzed data; deduced Gamow-Teller transition matrix elements. 48Ca deduced 2ν-accompanied 2β-decay T1/2.

doi: 10.1103/PhysRevC.70.054302
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2003AB02      Phys.Lett. B 553, 31 (2003)

S.Abdel-Samad, J.Bojowald, A.Budzanowski, A.Chatterjee, J.Ernst, D.Frekers, P.Hawranek, J.Ilieva, L.Jarczyk, K.Kilian, S.Kliczewski, W.Klimala, D.Kolev, M.Kravcikova, T.Kutsarova, J.Lieb, H.Machner, A.Magiera, G.Martinska, H.Nann, L.Pentchev, D.Protic, P.von Rossen, B.J.Roy, R.Siudak, A.Strzalkowski, R.Tsenov, M.Ulicny, J.Urban, K.Zwoll

Isospin symmetry breaking and scaling observed in pion production in p+d reactions

NUCLEAR REACTIONS 2H(p, π0), (p, π+), E at 900-1050 MeV/c; measured σ, σ(θ), σ(E); deduced scale parameter, isospin symmetry breaking, related features.

doi: 10.1016/S0370-2693(02)03166-0
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2003AB16      Phys.Scr. T104, 88 (2003)

S.Abdel-Samad, J.Bojowald, A.Budzanowski, A.Chatterjee, J.Ernst, D.Frekers, P.Hawranek, J.Ilieva, L.Jarczyk, K.Kilian, S.Kliczewski, W.Klimala, D.Kolev, M.Kravcikova, T.Kutsarova, J.Lieb, H.Machner, A.Magiera, G.Martinska, H.Nann, L.Pentchev, D.Protic, P.von Rossen, B.J.Roy, R.Siudak, M.Ulicny, A.Strzakowski, R.Tsenov, J.Urban, K.Zwoll

Simultaneous Measurements of p + d → 3He + π0 and p + d → 3H + π+ Reactions with the GEM detector

NUCLEAR REACTIONS 2H(p, π0), (p, π+), E at 750-1050 MeV/c; measured σ(θ); deduced slope parameters.

doi: 10.1238/Physica.Topical.104a00088
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2003AB30      Eur.Phys.J. A 18, 367 (2003)

S.Abdel-Samad, J.Bojowald, A.Budzanowski, A.Chatterjee, J.Ernst, D.Frekers, P.Hawranek, J.Ilieva, L.Jarczyk, K.Kilian, S.Kliczewski, W.Klimala, D.Kolev, M.Kravcikova, T.Kutsarova, J.Lieb, H.Machner, A.Magiera, G.Martinska, H.Nann, L.Pentchev, D.Protic, P.von Rossen, B.J.Roy, R.Siudak, A.Strzalkowski, R.Tsenov, M.Ulicny, J.Urban, K.Zwoll

Study of p + d → 3A + π reactions in the Δ-resonance region

NUCLEAR REACTIONS 2H(p, π0), (p, π+), E at 900-1050 MeV/c; measured σ, σ(θ); deduced slope parameters, reaction mechanism features.

doi: 10.1140/epja/i2002-10286-2
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2003BA77      Phys.Rev. C 68, 031303 (2003)

C.Baumer, A.M.van den Berg, B.Davids, D.Frekers, D.De Frenne, E.-W.Grewe, P.Haefner, M.N.Harakeh, F.Hofmann, M.Hunyadi, E.Jacobs, B.C.Junk, A.Korff, K.Langanke, G.Martinez-Pinedo, A.Negret, P.von Neumann-Cosel, L.Popescu, S.Rakers, A.Richter, H.J.Wortche

High-resolution study of the Gamow-Teller strength distribution in 51Ti measured through 51V(d, 2He)51Ti

NUCLEAR REACTIONS 51V(d, 2p), E=171 MeV; measured Ep, pp-coin. 51Ti deduced levels, Gamow-Teller strength distribution. Comparison with large-scale shell model predictions.

doi: 10.1103/PhysRevC.68.031303
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2003HA11      Phys.Rev. C 67, 054320 (2003)

V.M.Hannen, K.Amos, A.M.van den Berg, R.K.Bieber, P.K.Deb, F.Ellinghaus, D.Frekers, M.Hagemann, M.N.Harakeh, J.Heyse, M.A.de Huu, B.A.M.Krusemann, S.Rakers, R.Schmidt, S.Y.van der Werf, H.J.Wortche

Measurement and microscopic analysis of the 11B(p(pol), p(pol)) reaction at Ep = 150 MeV. I. Inelastic scattering

NUCLEAR REACTIONS 11B(polarized p, p'), E=150 MeV; measured σ(E, θ), analyzing powers, spin-flip probabilities. 11B deduced transitions B(M1), B(E2). Comparison with model predictions.

doi: 10.1103/PhysRevC.67.054320
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2003HA12      Phys.Rev. C 67, 054321 (2003)

V.M.Hannen, K.Amos, A.M.van den Berg, R.K.Bieber, P.K.Deb, F.Ellinghaus, D.Frekers, M.Hagemann, M.N.Harakeh, J.Heyse, M.A.de Huu, B.A.M.Krusemann, S.Rakers, R.Schmidt, S.Y.van der Werf, H.J.Wortche

Measurement and microscopic analysis of the 11B(p(pol), p(pol)) reaction at Ep = 150 MeV. II. Depolarization in elastic scattering from odd-A nuclei

NUCLEAR REACTIONS 11B, 12C(polarized p, p), E=150 MeV; measured σ(θ), polarization transfer coefficient. Comparison with model predictions.

doi: 10.1103/PhysRevC.67.054321
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2003WO10      Nucl.Phys. A719, 131c (2003)

H.J.Wortche, A.M.van den Berg, V.M.Hannen, M.N.Harakeh, M.A.de Huu, D.De Frenne, M.Hagemann, J.Heyse, E.Jacobs, C.Baumer, D.Frekers, S.Rakers, R.Schmidt

High resolution studies of low lying GT strength using the (d, 2He) reaction and its impact on electron-capture rates in stellar environments

NUCLEAR REACTIONS 58Ni(d, 2p), E=170 MeV; measured Ep, pp-coin, σ(E, θ); deduced Gamow-Teller strength distributions. 58Ni deduced astrophysical electron capture rates.

doi: 10.1016/S0375-9474(03)00982-5
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2002BE46      Phys.Rev. C65, 064001 (2002)

M.Betigeri, J.Bojowald, A.Budzanowski, A.Chatterjee, J.Ernst, L.Freindl, D.Frekers, W.Garske, K.Grewer, A.Hamacher, J.Ilieva, L.Jarczyk, K.Kilian, S.Kliczewski, W.Klimala, D.Kolev, T.Kutsarova, J.Lieb, H.Machner, A.Magiera, R.Maier, H.Nann, J.Niskanen, D.Prasuhn, L.Pentchev, D.Protic, B.Razen, P.von Rossen, B.J.Roy, R.Siudak, A.Strzalkowski, R.Tsenov, K.Zwoll

Measurement of the pp → ppπ0 Reaction at 850 MeV/c and Partial Wave Cross Sections

NUCLEAR REACTIONS 1H(p, pπ0), E at 850 MeV/c; measured missing mass, σ(E); deduced σ. Comparison with previous results, model predictions.

doi: 10.1103/PhysRevC.65.064001
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2002RA12      Phys.Rev. C65, 044323 (2002)

S.Rakers, C.Baumer, D.Frekers, R.Schmidt, A.M.van den Berg, V.M.Hannen, M.N.Harakeh, M.A.de Huu, H.J.Wortche, D.De Frenne, M.Hagemann, J.Heyse, E.Jacobs, Y.Fujita

Gamow-Teller Matrix Elements from the 12C(d, 2He) and 24Mg(d, 2He) Reactions at 170 MeV

NUCLEAR REACTIONS 12C, 24Mg(d, 2p), E=170 MeV; measured Ep, pp-coin, σ(E, θ), angular correlations. 12C, 24Mg deduced Gamow-Teller matrix elements. DWBA analysis.

doi: 10.1103/PhysRevC.65.044323
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2002RA15      Nucl.Instrum.Methods Phys.Res. A481, 253 (2002)

S.Rakers, F.Ellinghaus, R.Bassini, C.Baumer, A.M.van den Berg, D.Frekers, D.De Frenne, M.Hagemann, V.M.Hannen, M.N.Harakeh, M.Hartig, R.Henderson, J.Heyse, M.A.de Huu, E.Jacobs, M.Mielke, J.M.Schippers, R.Schmidt, S.Y.van der Werf, H.J.Wortche

Measuring the (d, 2He) Reaction with the Focal-Plane Detection System of the BBS Magnetic Spectrometer at AGOR

NUCLEAR REACTIONS 12C, 24Mg(d, 2p), E=170 MeV; measured proton spectra, correlations. 12B, 24Na deduced levels, J, π.

doi: 10.1016/S0168-9002(01)01365-1
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2002RE15      Phys.Lett. 532B, 179 (2002)

B.Reitz, A.M.van den Berg, D.Frekers, F.Hofmann, M.de Huu, Y.Kalmykov, H.Lenske, P.von Neumann-Cosel, V.Yu.Ponomarev, S.Rakers, A.Richter, G.Schrieder, K.Schweda, J.Wambach, H.J.Wortche

Direct Evidence for an Orbital Magnetic Quadrupole Twist Mode in Nuclei

NUCLEAR REACTIONS 58Ni(e, e'), E=65.4 MeV; 58Ni(p, p'), E=172 MeV; measured particle spectra, σ(E, θ). 58Ni deduced orbital M2 twist mode. Quasiparticle-phonon model, hydrodynamical model calculations.

doi: 10.1016/S0370-2693(02)01485-5
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2001BA18      Phys.Rev. C63, 037601 (2001)

C.Baumer, R.Bassini, A.M.van den Berg, D.De Frenne, D.Frekers, M.Hagemann, V.M.Hannen, M.N.Harakeh, J.Heyse, M.A.de Huu, E.Jacobs, M.Mielke, S.Rakers, R.Schmidt, H.Sohlbach, H.J.Wortche

Deuteron Elastic and Inelastic Scattering from 12C, 24Mg, and 58Ni at 170 MeV

NUCLEAR REACTIONS 12C, 24Mg, 58Ni(d, d), (d, d'), E=170 MeV; measured σ(E, θ); deduced optical model parameters.

doi: 10.1103/PhysRevC.63.037601
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2001BE13      Phys.Rev. C63, 044011 (2001)

M.Betigeri, J.Bojowald, A.Budzanowski, A.Chatterjee, J.Ernst, L.Freindl, D.Frekers, W.Garske, K.Grewer, A.Hamacher, J.Ilieva, L.Jarczyk, K.Kilian, S.Kliczewski, W.Klimala, D.Kolev, T.Kutsarova, J.Lieb, H.Machner, A.Magiera, H.Nann, L.Pentchev, D.Protic, B.Razen, P.von Rossen, B.J.Roy, R.Siudak, A.Strzalkowski, R.Tsenov, K.Zwoll

Differential Cross Sections Measurement for the pp → dπ+ Reaction at 850 MeV/c

NUCLEAR REACTIONS 1H(p, π+), E at 850 MeV/c; measured missing mass spectra, σ, σ(q), anisotropy. Comparison with earlier data and with phase-shift calculations.

doi: 10.1103/PhysRevC.63.044011
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2001BE35      Nucl.Phys. A690, 473 (2001)

M.Betigeri, J.Bojowald, A.Budzanowski, A.Chatterjee, J.Ernst, L.Freindl, D.Frekers, W.Garske, K.Grewer, A.Hamacher, J.Ilieva, L.Jarczyk, K.Kilian, S.Kliczewski, W.Klimala, D.Kolev, T.Kutsarova, J.Lieb, H.Machner, A.Magiera, H.Nann, L.Pentchev, H.S.Plendl, D.Protic, B.Razen, P.von Rossen, B.J.Roy, R.Siudak, J.Smyrski, R.V.Srikantiah, A.Strzalkowski, R.Tsenov, K.Zwoll, and the GEM Collaboration

Simultaneous Measurements of the p + d → (A = 3) + π Reactions

NUCLEAR REACTIONS 2H(p, π+), (p, π0), E at 750, 800, 850 MeV/c; measured pion missing mass distributions, σ(θ), total σ; deduced isospin symmetry conservation features. Simultaneous measurement, comparisons with previous results and model predictions.

doi: 10.1016/S0375-9474(00)00699-0
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2001BE37      Nucl.Phys. A689, 398c (2001)

M.Betigeri, J.Bojowald, A.Budzanowski, A.Chatterjee, J.Ernst, L.Freindl, D.Frekers, W.Garske, K.Grewer, A.Hamacher, J.Ilieva, L.Jarczyk, K.Kilian, S.Kliczewski, W.Klimala, D.Kolev, T.Kutsarova, J.Lieb, H.Machner, A.Magiera, H.Nann, L.Pentchev, H.S.Plendl, D.Protic, B.Razen, P.von Rossen, B.J.Roy, R.Siudak, A.Strzalkowski, R.Tsenov, K.Zwoll, and the GEM Collaboration

Meson Production in p + d Reactions

NUCLEAR REACTIONS 2H(p, X)3He, E not given; measured η meson production σ(θ). 2H(p, π0), E at 850, 1050 MeV/c; measured σ(θ). Comparisons with model predictions.

doi: 10.1016/S0375-9474(01)00864-8
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2000BE15      Nucl.Phys. A663-664, 963c (2000)

M.Betigeri, J.Bojowald, A.Budzanowski, A.Chatterjee, J.Ernst, L.Freindl, D.Frekers, W.Garske, K.Grewer, A.Hamacher, J.Ilieva, L.Jarczyk, K.Kilian, S.Kliczewski, W.Klimala, D.Kolev, T.Kutsarova, J.Lieb, H.Machner, A.Magiera, H.Nann, L.Pentchev, H.S.Plendl, D.Protic, B.Razen, P.von Rossen, B.J.Roy, R.Siudak, A.Strazalkowski, R.Tsenov, K.Zwoll, and the GEM Collaboration

Test of Charge Independence in p + d → (A = 3) + Pion Reactions

NUCLEAR REACTIONS 2H(p, π+), (p, π0), E at 850 MeV/c; measured σ(θ); deduced ratio. Simultaneous measurement.

doi: 10.1016/S0375-9474(99)00808-8
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1999BE35      Nucl.Instrum.Methods Phys.Res. A426, 249 (1999)

M.G.Betigeri, J.Bojowald, A.Budzanowski, A.Chatterjee, M.Drochner, J.Ernst, S.Fortsch, L.Freindl, D.Frekers, W.Garske, K.Grewer, A.Hamacher, M.Hawash, S.Igel, I.Ilieva, R.Jahn, L.Jarczyk, G.Kemmerling, K.Kilian, S.Kliczewski, W.Klimala, D.Kolev, T.Kutsarova, B.J.Lieb, G.Lippert, H.Machner, A.Magiera, R.Maier, H.Nann, H.S.Plendl, D.Protic, B.Razen, P.von Rossen, B.Roy, R.Siudak, J.Smyrski, A.Strzalkowski, R.Tsenov, P.A.Zolnierczuk, K.Zwoll, and the GEM Collaboration

Precise Momentum Determination of the External COSY Proton Beam Near 1930 MeV/c

NUCLEAR REACTIONS 1H(p, π+), E at 1930.5 MeV/c; measured pion, deuteron momenta; deduced absolute beam momentum.

doi: 10.1016/S0168-9002(99)00014-5
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1998LO12      Phys.Rev. C57, 3191 (1998)

S.A.Long, B.M.Spicer, K.J.Raywood, R.Abegg, W.P.Alford, A.Celler, D.Frekers, P.E.Green, O.Hausser, R.L.Helmer, R.S.Henderson, K.H.Hicks, K.P.Jackson, R.G.Jeppesen, N.S.P.King, C.A.Miller, M.A.Moinester, V.C.Officer, G.G.Shute, A.Trudel, M.C.Vetterli, A.I.Yavin, S.Yen

Spin-Isovector Giant Resonances Induced by (n, p) Reactions on Heavy Nuclei

NUCLEAR REACTIONS 120Sn, 181Ta(n, p), E=298 MeV; 238U(n, p), E=318 MeV; measured σ(Ep, θ). 90Zr, 208Pb(n, p), E=198 MeV; analyzed σ(Ep, θ). 90Y, 120In, 181Hf, 208Tl, 238Pa deduced L=0, 1, 2, 3 giant resonances energy distributions, quasi-free contributions, comparison with sum rules for L=1, 3. Multipole decomposition procedure.

doi: 10.1103/PhysRevC.57.3191
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset13970.


1998MI09      Phys.Rev. C57, 1756 (1998)

C.A.Miller, K.H.Hicks, R.Abegg, M.Ahmad, N.S.Chant, D.Frekers, P.W.Green, L.G.Greeniaus, D.A.Hutcheon, P.Kitching, D.J.Mack, W.J.McDonald, W.C.Olsen, R.Schubank, P.G.Roos, Y.Ye

Spin-Dependent Scattering of Deeply Bound Nucleons

NUCLEAR REACTIONS 16O(polarized p, 2p), E=504 MeV; measured σ(θ), A(y)(θ, E), spin transfer observables; deduced NN interaction medium effects. DWIA analysis.

doi: 10.1103/PhysRevC.57.1756
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1997HE06      Phys.Rev. C55, 2802 (1997)

R.L.Helmer, M.A.Punyasena, R.Abegg, W.P.Alford, A.Celler, S.El-Kateb, J.Engel, D.Frekers, R.S.Henderson, K.P.Jackson, S.Long, C.A.Miller, W.C.Olsen, B.M.Spicer, A.Trudel, M.C.Vetterli

Gamow-Teller Strength from the 76Se(n, p)76As Reaction: Implications for the double β decay of 76Ge

NUCLEAR REACTIONS 76Se(n, p), E=198 MeV; measured σ(θ). 76As deduced Gamow-Teller strength distribution. 76Ge deduced 2ν-accompanied 2β-decay T1/2. Quasi-particle RPA comparison, other data analyzed.

doi: 10.1103/PhysRevC.55.2802
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset13975.


1997IG02      Nucl.Phys. A626, 447c (1997)

S.Igel, A.Budzanowski, M.Drochner, D.Frekers, W.Garske, K.Grewer, A.Hamacher, G.Kemmerling, K.Kilian, S.Kliczewski, H.Machner, H.Plendl, D.Protic, B.Razen, R.V.Srikantiah, K.Zwoll

A Solid-State Spectrometer for Cooled Beams with High Acceptance and Resolution in Space and Energy

doi: 10.1016/S0375-9474(97)00568-X
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1997RA33      Nucl.Phys. A626, 63c (1997)

B.Razen, M.Drochner, J.Ernst, S.Fortsch, L.Freindl, D.Frekers, W.Garske, K.Grewer, S.Igel, R.Jahn, L.Jarczyk, G.Kemmerling, K.Kilian, S.Kliczewski, W.Klimala, D.Kolev, T.Kutsarova, G.Lippert, H.Machner, R.Maier, Ch.Nake, P.von Rossen, K.Scho, R.Siudak, J.Smyrski, A.Strzalkowski, R.Tsenov, P.A.Zolnierczuk, K.Zwoll

pp → dπ+ Precise Angular Distributions Close to Threshold from 0.3 to 5 MeV

NUCLEAR REACTIONS 1H(p, dπ+), E at 789.9-800.5 MeV/c; measured σ, σ(θ), anisotropies.

doi: 10.1016/S0375-9474(97)00521-6
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetA0645.


1996LA09      Phys.Rev. C53, 1774 (1996)

B.Larson, K.Hicks, O.Hausser, R.Abegg, W.Alford, A.Celler, D.Frekers, R.Helmer, R.Henderson, K.P.Jackson, R.Jeppesen, J.Mildenberger, C.A.Miller, B.Pointon, R.Schubank, M.Vetterli, S.Yen

Polarization Transfer in Inelastic Proton Scattering from 4- States in 16O at 350 MeV

NUCLEAR REACTIONS 16O(polarized p, p'), E=350 MeV; measured σ(θ), analyzing powers, spin observables. DWIA analysis.

doi: 10.1103/PhysRevC.53.1774
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1994EL05      Phys.Rev. C49, 3128 (1994)

S.El-Kateb, K.P.Jackson, W.P.Alford, R.Abegg, R.E.Azuma, B.A.Brown, A.Celler, D.Frekers, O.Hausser, R.Helmer, R.S.Henderson, K.H.Hicks, R.Jeppesen, J.D.King, K.Raywood, G.G.Shute, B.M.Spicer, A.Trudel, M.Vetterli, S.Yen

Spin-Isospin Strength Distributions for fp Shell Nuclei: Results for the 55Mn(n, p), 56Fe(n, p), and 58Ni(n, p) reactions at 198 MeV

NUCLEAR REACTIONS 55Mn, 56Fe, 58Ni(n, p), E=198 MeV; measured σ(θ, Ep). 55Mn, 56Fe, 58Ni deduced Gamow-Teller transition strength distribution.

doi: 10.1103/PhysRevC.49.3128
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset13593.


1993AL21      Phys.Rev. C48, 2818 (1993)

W.P.Alford, B.A.Brown, S.Burzynski, A.Celler, D.Frekers, R.Helmer, R.Henderson, K.P.Jackson, K.Lee, A.Rahav, A.Trudel, M.C.Vetterli

Spin-Isospin Strength Distributions in f-p Shell Nuclei: A study of the 51V(n, p) and 59Co(n, p) reactions at 198 MeV

NUCLEAR REACTIONS 51V, 59Co(n, p), E=198 MeV; measured σ(θ, Ep). 51Ti, 59Fe deduced Gamow-Teller, spin-dipole strength distribution. Multipole analysis, model comparison.

doi: 10.1103/PhysRevC.48.2818
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset13592.


1993CE03      Phys.Rev. C47, 1563 (1993)

A.Celler, S.Yen, W.P.Alford, R.Abegg, B.A.Brown, S.Burzynski, D.Frekers, O.Hausser, R.Helmer, R.S.Henderson, K.Hicks, K.P.Jackson, R.Jeppesen, C.A.Miller, M.A.Moinester, B.W.Pointon, A.Trudel, M.C.Vetterli

Search for Gamow-Teller Strength in the Continuum via the 3He(n, p)3H Reaction at 288 MeV

NUCLEAR REACTIONS 3He(n, p), E=288 MeV; measured σ(θ), σ(θ, E); deduced model parameters, continuum Gamow-Teller transition strength upper limit.

doi: 10.1103/PhysRevC.47.1563
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset13950.


1993MA60      Acta Phys.Pol. B24, 1555 (1993)

H.Machner, A.Budzanowski, P.Cloth, H.Dabrowski, A.Djaloeis, M.Drochner, V.Druke, J.Ernst, W.Erven, D.Filges, D.Frekers, D.Grzonka, J.Holzer, St.Igel, R.Jahn, L.Jarczyk, K.Kilian, J.Konin, T.Kutsarova, M.Kystrin, B.J.Lieb, W.Meiling, H.P.Morsch, Ch.Nake, H.S.Plendl, D.Protic, G.Riepe, E.Roderburg, P.von Rossen, R.Schwierz, J.Smyrski, A.Strzalkowski, P.Turek, K.H.Watzlawik, K.Zwoll, and the GEM Collaboration

Meson Production Studied with the GEM Detector

NUCLEAR REACTIONS 2H(p, π0), (p, X), E not given; compiled, reviewed π0, eta production σ data, analyses. 2H(p, X), E=903.4, 1091.6 MeV; measured missing mass spectra. Ge wall plus magnetic spectrometer. Other aspects discussed.


1993PO05      Phys.Rev. C47, 2751 (1993)

R.Pourang, J.W.Watson, R.Abegg, M.Ahmad, W.P.Alford, B.D.Anderson, A.R.Baldwin, A.Celler, D.Frekers, O.Hausser, R.Helmer, R.Henderson, K.Hicks, R.Jeppesen, K.P.Jackson, N.S.P.King, R.Madey, C.A.Miller, M.Moinester, M.C.Vetterli, S.Yen

High-Spin Stretched States Excited in (n, p) Reactions at 300 MeV

NUCLEAR REACTIONS 12C, 28Si, 120Sn(n, p), E=300 MeV; measured spectra, σ(θ). 12B, 28Al, 120In deduced stretched states normalizations. DWIA analysis.

doi: 10.1103/PhysRevC.47.2751
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset13962.


1992VE01      Phys.Rev. C45, 997 (1992)

M.C.Vetterli, K.P.Jackson, A.Celler, J.Engel, D.Frekers, O.Hausser, R.Helmer, R.Henderson, K.H.Hicks, R.G.Jeppesen, B.Larson, B.Pointon, A.Trudel, S.Yen

70,72Ge(n, p)70,72Ga Reactions: Suppression of Gamow-Teller strength near N = 40

NUCLEAR REACTIONS 70,72Ge(n, p), E=200 MeV; measured σ(θ, E). 70,72Ga deduced Gamow-Teller transition strength quenching.

doi: 10.1103/PhysRevC.45.997
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset13976.


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