NSR Query Results


Output year order : Descending
Format : Normal

NSR database version of April 11, 2024.

Search: Author = F.Heim

Found 11 matches.

Back to query form



2023MU07      Phys.Rev. C 107, 035804 (2023)

M.Muller, F.Heim, Y.Wang, S.Wilden, A.Zilges

Determination of 170, 172Yb(α, n)173, 175Hf reaction cross sections in a stacked-target experiment

NUCLEAR REACTIONS 170Yb(α, n), E=14.5 MeV; 172Yb(α, n), E=17 MeV; measured Eγ, Iγ; deduced σ(E). Activation technique. Comparison with TALYS-1.95 calculations with various α optical model potentials (OMP) and other experimental data. Investigated the evolution of the α-OMP with the neutron-to-proton ratio. Cologne Clover Counting setup consisting of two clover-type high-purity germanium detectors in a face-to-face geometry. Irradiation of stacked targets at10 MV FN tandem accelerator (University of Cologne).

doi: 10.1103/PhysRevC.107.035804
Citations: PlumX Metrics


2022PR02      Phys.Rev. C 105, 034319 (2022)

S.Prill, A.Bohn, V.Everwyn, G.Hafner, F.Heim, M.Spieker, M.Weinert, J.Wilhelmy, A.Zilges

Lifetime analysis of 128, 130Te via the Doppler-shift attenuation method

NUCLEAR REACTIONS 128Te(p, p'γ), E=8.8 MeV; 130Te(p, p'γ), E=10 MeV; measured Ep, Ip, Eγ, Iγ, pγ-coin. 128,130Te; deduced levels, J, π, T1/2 of excited states, B(E2), B(M1). p-γ-coincidence DSA technique for half-life determination. Comparison to shell-model calculations performed with NuShellX in the jj55pn model space. Combined SONIC (Si-detectors) and HORUS (HPGe-detectors) arrays.

doi: 10.1103/PhysRevC.105.034319
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2021HE07      Phys.Rev. C 103, 025805 (2021)

F.Heim, J.Mayer, M.Muller, P.Scholz, A.Zilges

Deducing primary γ-ray intensities and the dipole strength function in 94Mo via radiative proton capture

NUCLEAR REACTIONS 93Nb(p, γ)94Mo, E=3.0, 3.5 MeV; 94Mo(p, p')94Mo, E=13.5 MeV; measured Eγ, Iγ, pγ- and γγ-coin using HORUS γ-ray spectrometer for γ detection and SONIC array for scattered protons at the FN-Tandem accelerator of University of Cologne. 94Mo; deduced levels, J, π, γ-branching ratios, primary γ rays from two-step cascade (TSC) spectra, partial cross-sections at E(p)=3.0 and 3.5 MeV, E1 and M1 strength functions, absolute γ-strength function (γSF). Systematics of γ strength functions in 92Mo, 94Mo and 96Mo. Comparison of γ strength functions with experimental results using the Oslo method and photoinduced experiments as well as with recent theoretical quasiparticle random-phase approximation (QRPA) calculations. Relevance to nucleosynthesis of heavy nuclei in the slow and rapid neutron capture processes.

doi: 10.1103/PhysRevC.103.025805
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO2539. Data from this article have been entered in the XUNDL database. For more information, click here.


2021HE16      Phys.Rev. C 103, 054613 (2021)

F.Heim, M.Muller, S.Wilden, A.Zilges

Absolute 96Mo(p, n)96m+gTc cross sections and a new branching for the 96mTc decay

NUCLEAR REACTIONS 96Mo(p, n)96Tc/96mTc, E=3.9-5.4 MeV; measured Eγ, Iγ; deduced production σ(E) for 96Tc g.s. and 96mTc, total σ(E) using activation method, branching ratio for 96mTc decay to 96Tc g.s. Comparison with previous experimental results, and with statistical model calculations using Hauser-Feshbach TALYS code v1.95.

RADIOACTIVITY 96mTc(EC)[from 96Mo(p, n), E=3.9-5.4 MeV]; measured Eγ, Iγ, branching ratio for the ϵ decay mode. Comparison with literature data.

doi: 10.1103/PhysRevC.103.054613
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO2542. Data from this article have been entered in the XUNDL database. For more information, click here.


2021HE17      Phys.Rev. C 103, 055803 (2021)

F.Heim, J.Mayer, M.Muller, P.Scholz, A.Zilges

Investigating the 109Ag(p, γ)110Cd reaction and its underlying nuclear physics

NUCLEAR REACTIONS 109Ag(p, γ)110Cd, E=2.5-5.0 MeV from the FN-Tandem accelerator of the University of Cologne; measured Eγ, Iγ, γ(θ) using HORUS array of 14 HPGe detectors; deduced total σ(E). Comparison with previous experimental results and Hauser-Feshbach calculations. 106,108,110,112Cd; analyzed dipole components of the γ-ray strength functions and nuclear level density (NLD) using D1M+QRPA+0lim γ-SF model and microscopic NLD model.

doi: 10.1103/PhysRevC.103.055803
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO2543. Data from this article have been entered in the XUNDL database. For more information, click here.


2020HE08      Phys.Rev. C 101, 035805 (2020)

F.Heim, P.Scholz, M.Korschgen, J.Mayer, M.Muller, A.Zilges

Insights into the statistical γ-decay behavior of 108Cd via radiative proton capture

NUCLEAR REACTIONS 107Ag(p, γ)108Cd, E=2.0, 2.7, 3.5, 4, 4.5, 5.0 MeV; measured Eγ, Iγ, γγ-coin, γ(θ) using the HORUS spectrometer at the Institute for Nuclear Physics, Cologne. 108Cd; deduced levels, resonances, J, π, partial and total σ(E) in the astrophysical energy region, E1 γ-strength function (γ-SF), total γ-decay width, nuclear level density (NLD). Comparison with previous experimental data, and with statistical model calculations based on Gogny D1M HFB+QRPA interaction. Relevance to mechanism of the p process.

doi: 10.1103/PhysRevC.101.035805
Citations: PlumX Metrics


2020HE09      Phys.Rev. C 101, 035807 (2020)

F.Heim, P.Scholz, J.Mayer, M.Muller, A.Zilges

Constraining nuclear properties in 94Mo via a 93Nb(p, γ)94Mo total cross section measurement

NUCLEAR REACTIONS 93Nb(p, γ), E=1.96-4.98 MeV; measured Eγ, Iγ, γγ-coin, γ(θ) using the HORUS spectrometer at the Institute for Nuclear Physics, Cologne. 94Mo; deduced levels, J, π, nuclear level density (NLD), E1, M1 and E1+M1 g-strength functions (γ-SF), partial and total σ(E). 94Mo(γ, p), (γ, n), T=2.0-3.5 GK; deduced reaction rates, and compared with data in REACLIB and STARLIB libraries. Comparison with previous experimental data, and with statistical model calculations based on Gogny D1M HFB+QRPA interaction. Relevance to mechanism of the p process.

doi: 10.1103/PhysRevC.101.035807
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO2516. Data from this article have been entered in the XUNDL database. For more information, click here.


2020SC04      Phys.Rev. C 101, 045806 (2020)

P.Scholz, M.Guttormsen, F.Heim, A.C.Larsen, J.Mayer, D.Savran, M.Spieker, G.M.Tveten, A.V.Voinov, J.Wilhelmy, F.Zeiser, A.Zilges

Primary γ-ray intensities and γ-strength functions from discrete two-step γ-ray cascades in radiative proton-capture experiments

NUCLEAR REACTIONS 63,65Cu(p, γ), E=2.0, 3.5 MeV; measured Eγ, Iγ, γγ-coin, primary γ rays, two-step γ-ray cascades (TSCs) using the HORUS array of 14 HPGe detectors at the Institute for Nuclear Physics, University of Cologne. 64,66Zn; deduced levels, J, π, primary γ-ray intensities, dipole strength functions, and absolute γ-ray strength functions. Comparison with theoretical predictions, generalized Brink-Axel hypothesis, and other experimental results. Relevance of reaction rates of radiative capture reactions to nucleosynthesis of heavy nuclei in explosive stellar environments.

doi: 10.1103/PhysRevC.101.045806
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2020SC12      Phys.Rev. C 102, 045811 (2020)

P.Scholz, H.Wilsenach, H.W.Becker, A.Blazhev, F.Heim, V.Foteinou, U.Giesen, C.Munker, D.Rogalla, P.Sprung, A.Zilges, K.Zuber

New measurement of the 144Sm(α, γ)148Gd reaction rate for the γ process

NUCLEAR REACTIONS 144Sm(α, γ)148Gd, E=10.66-12.66 MeV; measured Eα, Iα from α decay of 148Gd at , σ(E) using activation method by irradiating the 144Sm targets at the cyclotron of PTB-Braunschweig, and α counting at TU-Dresden; deduced astrophysical reaction rates from 1.5-4.5 GK. Comparison with earlier experimental results, and with statistical-model using the TALYS code and the latest parametrizations of α+ nucleus optical model potentials (OMPs). Reaction rates compared with data in Reaclib database.

doi: 10.1103/PhysRevC.102.045811
Citations: PlumX Metrics


2017PI13      Nucl.Instrum.Methods Phys.Res. A875, 104 (2017)

S.G.Pickstone, M.Weinert, M.Farber, F.Heim, E.Hoemann, J.Mayer, M.Muscher, S.Prill, P.Scholz, M.Spieker, V.Vielmetter, Ju.Wilhelmy, A.Zilges

Combining α-ray and particle spectroscopy with SONICatHORUS

NUCLEAR REACTIONS 92Mo(p, pγ), E=10.5 MeV; 119Sn(d, pγ), E=10 MeV; 60Ni(p, pγ), E=15 MeV; 94Mo(p, pγ), E=13.5 MeV; measured reaction products, Eγ, Iγ; deduced γ-ray energies, J, π, branching ratios.

doi: 10.1016/j.nima.2017.09.016
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2016SC12      Phys.Lett. B 761, 247 (2016)

P.Scholz, F.Heim, J.Mayer, C.Munker, L.Netterdon, F.Wombacher, A.Zilges

Constraints on the α + nucleus optical-model potential via α-induced reaction studies on 108Cd

NUCLEAR REACTIONS 108Cd(α, γ), (α, n), E=12-13.5 MeV; measured reaction products, Eγ, Iγ; deduced σ, optical model potential parameters.

doi: 10.1016/j.physletb.2016.08.040
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO2318.


Back to query form