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NSR database version of April 11, 2024.

Search: Author = M.Kempe

Found 6 matches.

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2014MA05      Phys.Rev.Lett. 112, 072501 (2014)

R.Massarczyk, R.Schwengner, F.Donau, S.Frauendorf, M.Anders, D.Bemmerer, R.Beyer, C.Bhatia, E.Birgersson, M.Butterling, Z.Elekes, A.Ferrari, M.E.Gooden, R.Hannaske, A.R.Junghans, M.Kempe, J.H.Kelley, T.Kogler, A.Matic, M.L.Menzel, S.Muller, T.P.Reinhardt, M.Roder, G.Rusev, K.D.Schilling, K.Schmidt, G.Schramm, A.P.Tonchev, W.Tornow, A.Wagner

Nuclear Deformation and Neutron Excess as Competing Effects for Dipole Strength in the Pygmy Region

NUCLEAR REACTIONS ^{124,128,132,134}Xe(γ, X), E<12 MeV; measured reaction products, Eγ, Iγ. ^{124,128,132,134}Xe; deduced photoabsorption σ, summed B(E1) strength, nuclear deformation in the region of the pygmy dipole resonance. Nuclear resonance fluorescence experiment, random-phase approximation calculations, comparison with available data.

doi: 10.1103/PhysRevLett.112.072501
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetG0042.

2014MA81      Phys.Rev. C 90, 044301 (2014)

A.Makinaga, R.Massarczyk, R.Schwengner, M.Beard, F.Donau, M.Anders, D.Bemmerer, R.Beyer, R.Hannaske, A.R.Junghans, M.Kempe, T.Kogler, M.Roder, K.Schmidt, A.Wagner

Dipole strength of ¹⁸¹Ta for the evaluation of the ¹⁸⁰Ta stellar neutron capture rate

NUCLEAR REACTIONS ¹⁸¹Ta(γ, γ'), E<10 MeV; measured Eγ, Iγ, γγ-coin, photoabsorption σ(E) using the bremsstrahlung facility γ-ELBE at the electron accelerator of Dresden-Rossendorf (HZDR) facility; deduced mean branching ratios and uncertainty range of ground-state transitions from γ-ray cascades, dipole-strength distribution. Comparison with ¹⁸¹Ta(γ, n) experimental data, and QRPA calculations.

NUCLEAR REACTIONS ^180,180m,181Ta(n, γ), E<15 MeV; calculated σ(E), Maxwellian-averaged cross sections (MACS). ¹⁸¹Ta(γ, n) at T=2-5.5 GK; ^180mTa(n, γ) at T=0.1-1 GK; calculated stellar reaction rates. Calculations using the code TALYS with various models for the input strength function. Comparison with data in KADoNiS database.

doi: 10.1103/PhysRevC.90.044301
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetM0886.

2014RO15      Eur.Phys.J. A 50, 112 (2014)

M.ROder, Z.Elekes, T.Aumann, D.Bemmerer, K.Boretzky, C.Caesar, T.E.Cowan, J.Hehner, M.Heil, M.Kempe, V.Maroussov, O.Nusair, A.V.Prokofiev, R.Reifarth, M.Sobiella, D.Stach, A.Wagner, D.Yakorev, A.Zilges, K.Zuber, for the R3B Collaboration

Efficiency determination of resistive plate chambers for fast quasi-monoenergetic neutrons

doi: 10.1140/epja/i2014-14112-0
Citations: PlumX Metrics

2013HA37      Eur.Phys.J. A 49, 137 (2013)

R.Hannaske, Z.Elekes, R.Beyer, A.Junghans, D.Bemmerer, E.Birgersson, A.Ferrari, E.Grosse, M.Kempe, T.Kogler, M.Marta, R.Massarczyk, A.Matic, G.Schramm, R.Schwengner, A.Wagner

Neutron total cross section measurements of gold and tantalum at the nELBE photoneutron source

NUCLEAR REACTIONS Ta, ¹⁹⁷Au(n, X), E≈0.1-10 MeV; measured thick target reaction products using ELBE ToF; deduced total σ, effective total σ using energy-averaged transmission using ENDF/B-VII.1; calculated total σ using TALYS 1.4. Compared with other data and evaluations.

doi: 10.1140/epja/i2013-13137-1
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 dataset23199.

2012MA31      Phys.Rev. C 86, 014319 (2012)

R.Massarczyk, R.Schwengner, F.Donau, E.Litvinova, G.Rusev, R.Beyer, R.Hannaske, A.R.Junghans, M.Kempe, J.H.Kelley, T.Kogler, K.Kosev, E.Kwan, M.Marta, A.Matic, C.Nair, R.Raut, K.D.Schilling, G.Schramm, D.Stach, A.P.Tonchev, W.Tornow, E.Trompler, A.Wagner, D.Yakorev

Electromagnetic dipole strength of ¹³⁶Ba below the neutron separation energy

NUCLEAR REACTIONS ¹³⁶Ba(γ, γ'), E at 7.0 MeV/c and 11.4 MeV/c; ¹³⁶Ba(polarized γ, γ')E=4.7, 5.1, 5.6, 6.1, 6.5, 7.0, 7.5, 8.0, 8.4, 8.7, 9.0, 9.3 MeV; measured Eγ, Iγ, integrated σ(E), photoabsorption σ as a function of excitation energy, γ(θ), γ(lin pol) using Bremsstrahlung facility at ELBE, HZDR, and HIγS facility at TUNL. ¹³⁶Ba; deduced levels, J, π, widths, pygmy dipole resonances, dipole strength in the quasicontinuum, enhancement of dipole strength. Statistical code used to simulate inelastic transitions and to determine the branching ratios of transitions to ground state. GEANT4 simulations. Comparison with previous experimental studies, and with theoretical calculations using quasiparticle random-phase approximation (QRPA) and relativistic quasiparticle time blocking approximation (RQTBA) approaches. Comparison of photoabsorption σ in ^136,138Ba and ¹³⁹La targets.

doi: 10.1103/PhysRevC.86.014319
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetL0183. Data from this article have been entered in the XUNDL database. For more information, click here.

2012SC02      Phys.Rev. C 85, 014311 (2012)

G.Schramm, R.Massarczyk, A.R.Junghans, T.Belgya, R.Beyer, E.Birgersson, E.Grosse, M.Kempe, Z.Kis, K.Kosev, M.Krticka, A.Matic, K.D.Schilling, R.Schwengner, L.Szentmiklosi, A.Wagner, J.L.Weil

Dipole strength in ⁷⁸Se below the neutron separation energy from a combined analysis of ⁷⁷Se(n, γ) and ⁷⁸Se(γ, γ') experiments

NUCLEAR REACTIONS ⁷⁷Se(n, γ), E AP 6 milli-eV, cold neutrons; ⁷⁸Se(γ, γ'), E<11.5 MeV bremsstrahlung; measured Eγ, Iγ; deduced photoabsorption cross section, level density according to constant-temperature model, dipole strength function. Comparison with simulated spectra from extreme statistical code.

doi: 10.1103/PhysRevC.85.014311
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 dataset31721.