NSR Query Results


Output year order : Descending
Format : Normal

NSR database version of April 11, 2024.

Search: Author = J.W.Hammer

Found 51 matches.

Back to query form



2013HA03      Phys.Rev. C 87, 025806 (2013)

S.Harissopulos, A.Spyrou, A.Lagoyannis, M.Axiotis, P.Demetriou, J.W.Hammer, R.Kunz, H.-W.Becker

Cross section measurements of proton capture reactions relevant to the p process: The case of 89Y(p, γ)90Zr and 121, 123Sb(p, γ)122, 124Te

NUCLEAR REACTIONS 89Y, 121,123Sb(p, γ)90Zr/122Te/124Te, E=16-3.4 MeV; measured Eγ, Iγ, γ(θ), total σ(E), primary and secondary γ; deduced astrophysical S(E) factors, reaction rates, isomeric cross section ratios. 90Zr; deduced levels, J, π. 89Y(p, γ)90Zr, E=2, 3, 4, 4.8 MeV; measured Eγ, integrated σ(E) by 4π-summing method. Comparison with TALYS code calculations, and with previous studies.

doi: 10.1103/PhysRevC.87.025806
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO2150.


2010CO12      Phys.Rev. C 82, 035802 (2010)

H.Costantini, R.J.de Boer, R.E.Azuma, M.Couder, J.Gorres, J.W.Hammer, P.J.LeBlanc, H.Y.Lee, S.O'Brien, A.Palumbo, E.C.Simpson, E.Stech, W.Tan, E.Uberseder, M.Wiescher

16O(α, γ)20Ne S factor: Measurements and R-matrix analysis

NUCLEAR REACTIONS 16O(α, γ), E=2.5 MeV; measured Eγ, Iγ, γγ-coin, Eα, Iα. 20Ne; deduced levels, J, π, resonances, width, yields, branching ratios, S factors, reaction rates. R-matrix analysis.

doi: 10.1103/PhysRevC.82.035802
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1819. Data from this article have been entered in the XUNDL database. For more information, click here.


2006AS02      Phys.Rev. C 73, 055801 (2006)

M.Assuncao, M.Fey, A.Lefebvre-Schuhl, J.Kiener, V.Tatischeff, J.W.Hammer, C.Beck, C.Boukari-Pelissie, A.Coc, J.J.Correia, S.Courtin, F.Fleurot, E.Galanopoulos, C.Grama, F.Haas, F.Hammache, F.Hannachi, S.Harissopulos, A.Korichi, R.Kunz, D.LeDu, A.Lopez-Martens, D.Malcherek, R.Meunier, Th.Paradellis, M.Rousseau, N.Rowley, G.Staudt, S.Szilner, J.P.Thibaud, J.L.Weil

E1 and E2 S factors of 12C(α, γ0)160 from γ-ray angular distributions with a 4π-detector array

NUCLEAR REACTIONS 12C(α, γ), E(cm)=1.30-2.78 MeV; measured Eγ, Iγ(θ); deduced E1 and E2 astrophysical S-factors.

doi: 10.1103/PhysRevC.73.055801
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO1420.


2005HA16      Nucl.Phys. A752, 514c (2005)

J.W.Hammer, M.Fey, R.Kunz, J.Kiener, V.Tatischeff, F.Haas, J.L.Weil, M.Assuncao, C.Beck, C.Boukari-Pelissie, A.Coc, J.J.Correia, S.Courtin, F.Fleurot, E.Galanopoulos, C.Grama, F.Hammache, S.Harissopulos, A.Korichi, E.Krmpotic, D.Le Du, A.Lopez-Martens, D.Malcherek, R.Meunier, P.Papka, T.Paradellis, M.Rousseau, N.Rowley, G.Staudt, S.Szilner

New determination of the 12C(α, γ)16O reaction rate from γ-ray angular distribution measurements

NUCLEAR REACTIONS 12C(α, γ), E(cm)=0.89-2.8 MeV; measured σ(θ), S-factors; deduced astrophysical reaction rate.

doi: 10.1016/j.nuclphysa.2005.02.056
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO1420.


2005HA48      Nucl.Phys. A758, 363c (2005)

J.W.Hammer, M.Fey, R.Kunz, J.Kiener, V.Tatischeff, F.Haas, J.L.Weil, M.Assuncao, C.Beck, C.Boukari-Pelissie, A.Coc, J.J.Correia, S.Courtin, F.Fleurot, E.Galanopoulos, C.Grama, F.Hammache, S.Harissopulos, A.Korichi, E.Krmpotic, D.Le Du, A.Lopez-Martens, D.Malcherek, R.Meunier, P.Papka, T.Paradellis, M.Rousseau, N.Rowley, G.Staudt, S.Szilner

E1 and E2 capture cross section and astrophysical reaction rate of the key reaction 12C(α, γ)16O

NUCLEAR REACTIONS 12C(α, γ), E(cm)=0.89-2.8 MeV; measured Eγ, Iγ, angular distributions; deduced S-factors for E1 and E2 capture. Eurogam and Gandi arrays, astrophysical implications discussed.

doi: 10.1016/j.nuclphysa.2005.05.066
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO1420.


2005HA49      Nucl.Phys. A758, 505c (2005)

S.Harissopulos, A.Spyrou, A.Lagoyannis, Ch.Zarkadas, H.-W.Becker, C.Rolfs, F.Strieder, J.W.Hammer, A.Dewald, K.-O.Zell, P.von Brentano, R.Julin, P.Demetriou, S.Goriely

Systematic measurements of proton- and alpha-capture cross sections relevant to the modelling of the p process

NUCLEAR REACTIONS 92Mo(α, γ), E=9 MeV; 91Zr(α, γ), E=10.5 MeV; 118Sn(α, γ), E=11.5 MeV; measured Eγ, Iγ. 91Zr, 118Sn(α, γ), E(cm) ≈ 9-11 MeV; measured σ. Comparison with model predictions.

doi: 10.1016/j.nuclphysa.2005.05.092
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO1415.


2005HA56      J.Phys.(London) G31, S1417 (2005)

S.Harissopulos, A.Lagoyannis, A.Spyrou, Ch.Zarkadas, S.Galanopoulos, G.Perdikakis, H.-W.Becker, C.Rolfs, F.Strieder, R.Kunz, M.Fey, J.W.Hammer, A.Dewald, K.-O.Zell, P.von Brentano, R.Julin, P.Demetriou

Proton and alpha-particle capture reactions at sub-Coulomb energies relevant to the p process

NUCLEAR REACTIONS 104Pd(p, γ), E(cm)=2-8 MeV; 118Sn(α, γ), E(cm)=10-11 MeV; measured Eγ, Iγ, σ. Comparison with model predictions.

doi: 10.1088/0954-3899/31/10/006
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO1291.


2005HA69      Phys.Rev. C 72, 062801 (2005)

S.Harissopulos, H.W.Becker, J.W.Hammer, A.Lagoyannis, C.Rolfs, F.Strieder

Cross section of the 13C(α, n)16O reaction: A background for the measurement of geo-neutrinos

NUCLEAR REACTIONS 13C(α, n), E=0.8-8.0 MeV; measured σ, neutron yields.

doi: 10.1103/PhysRevC.72.062801
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetF0786.


2003FE04      Nucl.Phys. A718, 131c (2003)

M.Fey, R.Kunz, J.W.Hammer, M.Jaeger, A.Mayer, E.Krmpotic, C.Bauer, C.Meyer, S.Harissopulos, T.Paradellis, G.Staudt, F.Haas, P.Papka, K.-L.Kratz, B.Pfeiffer

The Key Reactions in Stellar Helium Burning: 12C(α, γ)16O and 22Ne(α, n)25Mg

NUCLEAR REACTIONS 12C(α, γ), E ≈ 1-2.8 MeV; measured Eγ, Iγ(θ); deduced S-factor components. 22Ne(α, n), E=0.57-1.47 MeV; measured excitation function.

doi: 10.1016/S0375-9474(03)00690-0
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO1420.


2003GA01      Phys.Rev. C 67, 015801 (2003)

S.Galanopoulos, P.Demetriou, M.Kokkoris, S.Harissopulos, R.Kunz, M.Fey, J.W.Hammer, Gy.Gyurky, Zs.Fulop, E.Somorjai, S.Goriely

The 88Sr(p, γ)89Y reaction at astrophysically relevant energies

NUCLEAR REACTIONS 88Sr(p, γ), E=1.4-5 MeV; measured Eγ, Iγ, angular distributions, total σ; deduced astrophysical S-factors, reaction rates. Comparison with model predictions.

doi: 10.1103/PhysRevC.67.015801
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO1054.


2003HA32      Nucl.Phys. A719, 115c (2003)

S.Harissopulos, S.Galanopoulos, P.Demetriou, A.Spyrou, G.Kriembardis, M.Kokkoris, A.G.Karydas, Ch.Zarkadas, R.Kunz, M.Fey, J.W.Hammer, G.Gyurky, Zs.Fulop, E.Somorjai, A.Dewald, K.O.Zell, P.von Brentano, R.Julin, S.Goriely

A systematic study of proton capture reactions in the Se-Sb region at energies relevant to the p process

NUCLEAR REACTIONS 80Se, 86Sr, 93Nb, 103Rh(p, γ), E(cm) ≈ 1.5-4.5 MeV; measured Eγ, σ; deduced astrophysical S-factors.

doi: 10.1016/S0375-9474(03)00978-3
Citations: PlumX Metrics


2002KU16      Astrophys.J. 567, 643 (2002)

R.Kunz, M.Fey, M.Jaeger, A.Mayer, J.W.Hammer, G.Staudt, S.Harissopulos, T.Paradellis

Astrophysical Reaction Rate of 12C(α, γ)16O

NUCLEAR REACTIONS 12C(α, γ), E(cm) < 10 MeV; calculated S-factors, astrophysical reaction rates.

doi: 10.1086/338384
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetA0428.


2002WI18      Phys.Rev. C 66, 065802 (2002)

S.Wilmes, V.Wilmes, G.Staudt, P.Mohr, J.W.Hammer

The 15N(α, γ)19F reaction and nucleosynthesis of 19F

NUCLEAR REACTIONS 15N(α, γ), E=461-2642 keV; measured Eγ, Iγ; deduced resonance energies, strengths, widths, and branching ratios, astrophysical reaction rates. 19F deduced levels.

doi: 10.1103/PhysRevC.66.065802
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetF0748.


2001HA31      Prog.Part.Nucl.Phys. 46, 43 (2001)

J.W.Hammer

Key Reactions in the Helium Burning Phase of Stars

NUCLEAR REACTIONS 12C(α, γ), E(cm)=0.95-2.78 MeV; measured σ(θ); deduced S-factors. 22Ne(α, n), E=570-1400 keV; measured σ; deduced resonance parameters.

doi: 10.1016/S0146-6410(01)00106-5
Citations: PlumX Metrics


2001HA38      Nucl.Phys. A688, 421c (2001)

S.Harissopulos, S.Galanopoulos, P.Tsagari, P.Demetriou, G.Kuburas, T.Paradellis, R.Kunz, J.W.Hammer, G.Gyurky, E.Somorjai, S.Goriely, S.Kasemann, A.Dewald, K.O.Zell

Cross Sections of (p, γ) Reactions of N = 50 Nuclei Relevant to p-Process

NUCLEAR REACTIONS 88Sr, 89Y(p, γ), E=1.5-3.5 MeV; measured Eγ, σ. Comparison with Statistical Model calculations and with neighboring nuclei.

doi: 10.1016/S0375-9474(01)00743-6
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO2150.


2001HA60      Phys.Rev. C64, 055804 (2001)

S.Harissopulos, E.Skreti, P.Tsagari, G.Souliotis, P.Demetriou, T.Paradellis, J.W.Hammer, R.Kunz, C.Angulo, S.Goriely, T.Rauscher

Cross Section Measurements of the 93Nb(p, γ)94Mo Reaction at Ep = 1.4-4.9 MeV Relevant to the Nucleosynthetic p Process

NUCLEAR REACTIONS 93Nb(p, γ), E=1.4-4.9 MeV; measured Eγ, Iγ, total σ; deduced astrophysical reaction rates. Comparison with model predictions.

doi: 10.1103/PhysRevC.64.055804
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO0918.


2001JA15      Phys.Rev.Lett. 87, 202501 (2001)

M.Jaeger, R.Kunz, A.Mayer, J.W.Hammer, G.Staudt, K.L.Kratz, B.Pfeiffer

22Ne(α, n)25Mg: The key neutron source in massive stars

NUCLEAR REACTIONS 22Ne(α, n), E=570-1450 keV; measured σ; deduced resonance parameters, astrophysical reaction rates.

doi: 10.1103/PhysRevLett.87.202501
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetA0444.


2001KU09      Phys.Rev.Lett. 86, 3244 (2001)

R.Kunz, M.Jaeger, A.Mayer, J.W.Hammer, G.Staudt, S.Harissopulos, T.Paradellis

12C(α, γ)16O: The key reaction in stellar nucleosynthesis

NUCLEAR REACTIONS 12C(α, γ), E(cm)=0.95-2.8 MeV; measured Eγ, Iγ(θ); deduced astrophysical S-factors.

doi: 10.1103/PhysRevLett.86.3244
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetA0428.


2000JA08      Trans.Bulg.Nucl.Soc. 5, 183 (2000)

M.Jaeger, R.Kunz, I.Busching, A.Mayer, J.W.Hammer

The Reaction 22Ne(α, n)25Mg as a Neutron Source for the Astrophysical s-Process

NUCLEAR REACTIONS 22Ne(α, n), E=0.59-1.5 MeV; measured σ, resonance features.


2000TS05      Trans.Bulg.Nucl.Soc. 5, 195 (2000)

P.Tsagari, E.Skreti, G.A.Souliotis, P.Demetriou, S.Harissopulos, T.Paradellis, J.W.Hammer, R.Kunz, C.Angulo, S.Goriely, T.Rauscher

Cross Section Measurements of the 89Y(p, γ)90Zr Reaction in the Energy Range Ep = 1.6-2.4 MeV

NUCLEAR REACTIONS 89Y(p, γ), E=1.6-2.4 MeV; measured Eγ, Iγ, total σ. 90Zr deduced levels, J, π. Comparison with statistical model.


1999AN35      Nucl.Phys. A656, 3 (1999)

C.Angulo, M.Arnould, M.Rayet, P.Descouvemont, D.Baye, C.Leclercq-Willain, A.Coc, S.Barhoumi, P.Aguer, C.Rolfs, R.Kunz, J.W.Hammer, A.Mayer, T.Paradellis, S.Kossionides, C.Chronidou, K.Spyrou, S.Degl'Innocenti, G.Fiorentini, B.Ricci, S.Zavatarelli, C.Providencia, H.Wolters, J.Soares, C.Grama, J.Rahighi, A.Shotter, M.Lamehi-Rachti

A Compilation of Charged-Particle Induced Thermonuclear Reaction Rates

COMPILATION 1H(p, e+ν), 2H, 6,7Li, 7,9Be, 10,11B, 12,13C, 13,14,15N, 16,17,18O, 19F, 20,21,22Ne, 22,23Na, 24,25,26Mg, 26,27Al, 28Si(p, γ), 2H(d, γ), (d, p), 2,3H(d, n), 2,3H, 3He, 7Li, 7Be, 12C, 14,15N, 16,18O, 20,22Ne(α, γ), 3He(3He, 2p), 6,7Li, 9Be, 10,11B, 14,15N, 17,18O, 19F, 20Ne, 23Na, 24Mg, 27Al(p, α), 7Li, 9Be, 13C, 14N, 17,18O, 21,22Ne, 23Na, 25,26Mg, 27Al(α, n), 9Be, 11B, 13C, 14,15N, 19F, 23Na(p, n), 9Be(p, d), E < 10 MeV; compiled, analyzed σ, S-factors; calculated astrophysical reaction rates vs T9. Analytical approximations.

doi: 10.1016/S0375-9474(99)00030-5
Citations: PlumX Metrics


1999KO34      Nucl.Instrum.Methods Phys.Res. A431, 160 (1999)

V.Kolle, U.Kolle, S.E.Braitmayer, P.Mohr, S.Wilmes, G.Staudt, J.W.Hammer, M.Jaeger, H.Knee, R.Kunz, A.Mayer

Capture Reactions at Astrophysically Relevant Energies: Extended gas target experiments and GEANT simulations

NUCLEAR REACTIONS 20Ne(α, γ), E=0.45-3.50 MeV; measured Eγ, Iγ, yield curves; deduced resonant capture features, gas target density effects. GEANT simulations.

doi: 10.1016/S0168-9002(99)00247-8
Citations: PlumX Metrics


1998BU13      Phys.Rev. C58, R10 (1998)

Y.M.Butt, J.W.Hammer, M.Jaeger, R.Kunz, A.Mayer, P.D.Parker, R.Schreiter, G.Staudt

Measurement of the Properties of the Astrophysically Interesting 3/2+ State at 7.101 MeV in 19F

NUCLEAR REACTIONS 15N(α, γ), E=2.60-3.93 MeV; measured Eγ, Iγ. 19F deduced resonance E, Γ, ωγ. Astrophysical implications.

doi: 10.1103/PhysRevC.58.R10
Citations: PlumX Metrics


1997KU18      Nucl.Phys. A621, 149c (1997)

R.Kunz, A.Mayer, K.-D.Joos, H.Knee, A.Muller, J.Nickel, Ch.Plettner, J.W.Hammer, D.Baye, P.Descouvemont, M.Jaeger, V.Kolle, S.Wilmes, G.Staudt, P.Mohr, Ch.Chronidou, S.Harissopulos, K.Spyrou, Th.Paradellis

Capture Reactions in the Helium Burning of Stars

NUCLEAR REACTIONS, ICPND 12C(α, γ), E(cm)=0.9-3 MeV; measured Iγ(θ), preliminary results; analyzed astrophysical S-factors vs E, reaction rates vs T9. 16O(α, γ), E not given; analyzed Eγ, Iγ. Astrophysical implications.

doi: 10.1016/S0375-9474(97)00228-5
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetF0808.


1997MO27      Phys.Rev.Lett. 79, 3837 (1997)

R.Morlock, R.Kunz, A.Mayer, M.Jaeger, A.Muller, J.W.Hammer, P.Mohr, H.Oberhummer, G.Staudt, V.Kolle

Halo Properties of the First (1/2)+ State in 17F from the 16O(p, γ)17F Reaction

NUCLEAR REACTIONS, ICPND 16O(p, p), (p, γ), E(cm)=200-3750 keV; measured Eγ, Iγ, elastic, capture σ(E). 17F deduced halo state properties. Direct capture model.

doi: 10.1103/PhysRevLett.79.3837
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetF1059.


1997WI12      Nucl.Phys. A621, 145c (1997)

S.Wilmes, V.Kolle, U.Kolle, G.Staudt, P.Mohr, J.W.Hammer, A.Mayer

The Capture Reactions 15N(α, γ)19F and 20Ne(α, γ)24Mg at Astrophysically Relevant Energies

NUCLEAR REACTIONS 15N(α, γ), E=0.65-2.65 MeV; measured Eγ, Iγ; deduced resonance strengths. 20Ne(α, γ), E=1.64-2.65 MeV; measured Eγ, Iγ; deduced primary transitions yield vs E.

doi: 10.1016/S0375-9474(97)00227-3
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetF0516.


1996KU07      Phys.Rev. C53, 2486 (1996)

R.Kunz, S.Barth, A.Denker, H.W.Drotleff, J.W.Hammer, H.Knee, A.Mayer

Determination of the 9Be(α, n)12C Reaction Rate

NUCLEAR REACTIONS, ICPND 9Be(α, n), E=0.5-3.5 MeV; measured yield, σ(E); deduced astrophysical S-factor vs E, reaction rate. 13C deduced resonances, Γ.

doi: 10.1103/PhysRevC.53.2486
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetA0443.


1995WI26      Phys.Rev. C52, R2823 (1995)

S.Wilmes, P.Mohr, U.Atzrott, V.Kolle, G.Staudt, A.Mayer, J.W.Hammer

Low Energy Resonances in 15N(α, γ)19F and 15O(α, γ)19Ne

NUCLEAR REACTIONS 15N(α, γ), E=0.67-0.69 MeV; measured Eγ, Iγ; deduced resonance strength. 19Ne, 19F deduced resonance parameters. Gas target, hyperpure Ge detector. Realistic folding potential model. Other data input.

doi: 10.1103/PhysRevC.52.R2823
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetF0741.


1994MO17      Phys.Rev. C50, 1543 (1994)

P.Mohr, V.Kolle, S.Wilmes, U.Atzrott, G.Staudt, J.W.Hammer, H.Krauss, H.Oberhummer

Direct Capture in the 3+ Resonance of 2H(α, γ)6Li

NUCLEAR REACTIONS, ICPND 2H(α, γ), E=2-2.5 MeV; measured Eγ, Iγ; deduced σ(E), folding potential parameters.

doi: 10.1103/PhysRevC.50.1543
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetA0540.


1993DR08      Astrophys.J. 414, 735 (1993)

H.W.Drotleff, A.Denker, H.Knee, M.Soine, G.Wolf, J.W.Hammer, U.Greife, C.Rolfs, H.P.Trautvetter

Reaction Rates of the s-Process Neutron Sources 22Ne(α, n)25Mg and 13C(α, n)16O

NUCLEAR REACTIONS, ICPND 13C(α, n), E(cm) ≈ 275-1075 keV; 22Ne(α, n), E=0.57-2.3 MeV; measured σ(E); deduced astrophysical S-factor, reaction rates at helium burning temperatures.

doi: 10.1086/173119
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetA0613.


1993MO11      Phys.Rev. C48, 1420 (1993)

P.Mohr, H.Abele, R.Zwiebel, G.Staudt, H.Krauss, H.Oberhummer, A.Denker, J.W.Hammer, G.Wolf

Alpha Scattering and Capture Reactions in the A = 7 System at Low Energies

NUCLEAR REACTIONS, ICPND 4He(3He, 3He), E=1.2-3 MeV; measured σ(θ). 4He(3He, 3He), (t, t), E ≤ 10 MeV; analyzed phase shifts data. 3H, 3He(α, γ), E(cm) ≤ 1 MeV; calculated astrophysical S-factor vs E; deduced multipole contributions.

doi: 10.1103/PhysRevC.48.1420
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD0147.


1991DR01      Z.Phys. A338, 367 (1991)

H.W.Drotleff, A.Denker, J.W.Hammer, H.Knee, S.Kuchler, D.Streit, C.Rolfs, H.P.Trautvetter

New 22Ne(α, n)25Mg-Resonances at Very Low Energies Relevant for the Astrophysical s-Process

NUCLEAR REACTIONS, ICPND 22Ne(α, n), E ≈ 550-2100 keV; measured σ(E); deduced resonance structure relevant to s-process. Windowless gas target system, 4π neutron detector.

doi: 10.1007/BF01288203
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO0967.


1990WE10      Nucl.Instrum.Methods Phys.Res. A292, 359 (1990)

W.Weiss, W.Grum, J.W.Hammer, M.Koch, G.Schreder

Polarization Measurement of Fast Neutrons from the 9Be(α, n)12C and the 13C(α, n)16O Reaction using a High-Pressure 4He-Polarimeter in a New Design

NUCLEAR REACTIONS 9Be(α, n), E=1.9-3.1 MeV; 13C(α, n), E=2.406-3.308 MeV; measured σ(θ), polarization. New design high pressure 4He-polarimeter.

doi: 10.1016/0168-9002(90)90392-J
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetF0699.


1989DA07      Phys.Rev. C39, 1768 (1989)

G.Dagge, W.Grum, J.W.Hammer, K.-W.Hoffmann, G.Schreder

Optical Model Analysis of Polarized Neutron Scattering from Aluminum, Copper, and Chromium

NUCLEAR REACTIONS 27Al(polarized n, n), (polarized n, n'), E=7.62 MeV; Cr, Cu(polarized n, n), (polarized n, n'), E=7.75 MeV; measured σ(θ), analyzing power vs θ; deduced optical model parameters, spin orbit parameters. Coupled channels, optical model, weak-coupling model analyses.

doi: 10.1103/PhysRevC.39.1768
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset22532.


1989SC07      Phys.Rev. C39, 1774 (1989)

G.Schreder, W.Grum, J.W.Hammer, K.-W.Hoffmann, G.Schleussner

Optical Model Analysis of Polarized Neutron Scattering from Yttrium, Lanthanum, and Thulium

NUCLEAR REACTIONS 89Y, 139La, 169Tm(polarized n, n), E=7.75 MeV; measured σ(θ), analyzing power vs θ; deduced optical model parameters, spin-orbit parameters.

doi: 10.1103/PhysRevC.39.1774
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset22121.


1989WO09      Z.Phys. A334, 491 (1989)

K.Wolke, V.Harms, H.W.Becker, J.W.Hammer, K.L.Kratz, C.Rolfs, U.Schroder, H.P.Trautvetter, M.Wiescher, A.Wohr

Helium Buring of 22Ne

NUCLEAR REACTIONS, ICPND 22Ne(α, γ), (α, nγ), E=0.71-2.25 MeV; measured σ(Eγ, E), γ yields, σ(En); deduced reaction rates. 26Mg deduced resonances, γ-branching ratios, J, π, transition strengths. Enriched gas target.

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO1122.


1988HI06      Z.Phys. A329, 243 (1988)

M.Hilgemeier, H.W.Becker, C.Rolfs, H.P.Trautvetter, J.W.Hammer

Absolute Cross Section of the 3He(α, γ)7Be Reaction

NUCLEAR REACTIONS, ICPND 3He(α, γ), E(cm)=195-686 keV; measured σ(E); deduced astrophysical S(E) factor. Windowless gas targets, beam calorimeter, Ge detectors.

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetA1289.


1987RE02      Nucl.Phys. A462, 385 (1987)

A.Redder, H.W.Becker, C.Rolfs, H.P.Trautvetter, T.R.Donoghue, T.C.Rinckel, J.W.Hammer, K.Langanke

The 12C(α, γ)16O Cross Section at Stellar Energies

NUCLEAR REACTIONS, ICPND 12C(α, γ), E=0.94-2.84 MeV; measured Eγ, Iγ, σ(E), σ(E, E(γ), θ); deduced astrophysical S-factor. Implanted 12C targets, NaI(Tl), Ge detectors.

doi: 10.1016/0375-9474(87)90555-0
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetF0580.


1986HA25      Nucl.Instrum.Methods Phys.Res. A244, 455 (1986)

J.W.Hammer, G.Bulski, W.Grum, W.Kratschmer, H.Postner, G.Schleussner

SCORPION, The Stuttgart Scattering Facility for Fast Polarized Neutrons

NUCLEAR REACTIONS 12C(n, n), (polarized n, n), E=7.55-8.8 MeV; measured σ(θ), analyzing power vs θ.

doi: 10.1016/0168-9002(86)91069-7
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset23737.


1985RE09      Phys.Rev.Lett. 55, 1262 (1985)

A.Redder, H.W.Becker, J.Gorres, M.Hilgemeier, A.Krauss, C.Rolfs, U.Schroder, H.P.Trautvetter, K.Wolke, T.R.Donoghue, T.C.Rinckel, J.W.Hammer

Capture Amplitudes in the Reaction 12C(α, γ)16O at Stellar Energies

NUCLEAR REACTIONS 12C(α, γ), E(cm)=1.7-2.8 MeV; measured Eγ, Iγ, γ(θ); deduced nonnegligible E2 contribution to reaction rate at stellar energies, capture σ(E1)/σ(E2).

doi: 10.1103/PhysRevLett.55.1262
Citations: PlumX Metrics


1983GO21      Nucl.Phys. A408, 372 (1983)

J.Gorres, H.W.Becker, L.Buchmann, C.Rolfs, P.Schmalbrock, H.P.Trautvetter, A.Vlieks, J.W.Hammer, T.R.Donoghue

Proton-Induced Direct Capture on 21Ne and 22Ne

NUCLEAR REACTIONS, ICPND 22Ne(p, p), E=0.6-1.6 MeV; measured σ(θ=145°)/σ(Rutherford) vs E. 21,22Ne(p, γ), E=0.3-1.6 MeV; measured Eγ, Iγ, σ(E, θγ); deduced direct capture σ, astrophysical reaction rates. 22Na resonances deduced γ transition strength. 23Na levels deduced spectroscopic factors, γ transition strength. Extended quasipoint jet gas targets, Ge(Li) detectors.

doi: 10.1016/0375-9474(83)90588-2
Citations: PlumX Metrics


1983SC17      Nucl.Phys. A398, 279 (1983)

P.Schmalbrock, H.W.Becker, L.Buchmann, J.Gorres, K.U.Kettner, W.E.Kieser, H.Krawinkel, C.Rolfs, H.P.Trautvetter, J.W.Hammer, R.E.Azuma

Stellar Reaction Rate of 20Ne(α, γ)24Mg

NUCLEAR REACTIONS, ICPND 20Ne(α, γ), E=0.55-3.2 MeV; measured Eγ, Iγ(E, θ); deduced astrophysical reaction rate, S-factor of capture σ. 24Mg deduced levels, absolute γ-transition strengths, Γ, J, π, T, δ, γ-branching ratios. Windowless gas targets of the extended and jet type, enriched 20Ne gas, Ge(Li) detectors.

doi: 10.1016/0375-9474(83)90488-8
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetF0513.


1982KR05      Z.Phys. A304, 307 (1982)

H.Krawinkel, H.W.Becker, L.Buchmann, J.Gorres, K.U.Kettner, W.E.Kieser, R.Santo, P.Schmalbrock, H.P.Trautvetter, A.Vlieks, C.Rolfs, J.W.Hammer, R.E.Azuma, W.S.Rodney

The 3He(α, γ)7Be Reaction and the Solar Neutrino Problem

NUCLEAR REACTIONS 3He(α, γ), E(cm)=107-1266 keV; measured σ(E, Eγ, θγ), σ(absolute). 3He(α, α), E=0.2-3 MeV; measured yield vs E; deduced astrophysical S-factor vs E. Ge(Li) detectors, extended, quasipoint jet gas targets.

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetA1205.


1980WI17      Nucl.Phys. A349, 165 (1980)

M.Wiescher, H.W.Becker, J.Gorres, K.-U.Kettner, H.P.Trautvetter, W.E.Kieser, C.Rolfs, R.E.Azuma, K.P.Jackson, J.W.Hammer

Nuclear and Astrophysical Aspects of 18O(p, γ)19F

NUCLEAR REACTIONS 18O(p, γ), E=80-2200 keV; measured Ep, Eγ, Iγ(E, θ). 19F deduced levels, absolute γ-transition strength, Γ, J, π, δ, γ-branching ratios, S, astrophysical reaction rate. Enriched target, Ge(Li) detectors.

doi: 10.1016/0375-9474(80)90451-0
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1916.


1978TR05      Nucl.Phys. A297, 489 (1978)

H.P.Trautvetter, M.Wiescher, K.-U.Kettner, C.Rolfs, J.W.Hammer

Helium Burning of 18O

NUCLEAR REACTIONS 18O(α, γ), E=0.6-2.3 MeV; measured Eγ, Iγ, Iγ(θ), Iγ(E); deduced astrophysical reaction rate. 22Ne deduced resonances, resonance strength, Γ, J, π, δ, γ-ray branching ratios. Enriched 18O targets. Ge(Li) detector.

doi: 10.1016/0375-9474(78)90156-2
Citations: PlumX Metrics


1976HA36      Z.Phys. A278, 183 (1976)

W.Hartl, J.W.Hammer

Die K-Elektroneneinfangwahrscheinlichkeit P(k) beim Zerfall von 139Ce

RADIOACTIVITY 139Ce; measured K-shell EC probability.

doi: 10.1007/BF01437774
Citations: PlumX Metrics


1976HA61      Z.Phys. A279, 135 (1976)

W.Hartl, J.W.Hammer

The K-Fluorescence Yield of Germanium

RADIOACTIVITY 74As; measured γγ-coin, T1/2, K X-rays; deduced EC, β-branching. 74Ge deduced K-fluorescence yield P(K)w(K).

doi: 10.1007/BF01437868
Citations: PlumX Metrics


1975AL23      Z.Phys. A273, 405 (1975)

G.Albrecht, J.W.Hammer

Die K-Fluoreszenzausbeute von Titan und der Zerfall des 48Vanadium

RADIOACTIVITY 48V; measured T1/2, I X-ray, Iγ, γ(X-ray)-coin; deduced branching. 48Ti deduced K-fluorescence yield.

doi: 10.1007/BF01435584
Citations: PlumX Metrics


1971GE10      Z.Phys. 246, 376 (1971)

V.Gehrling, J.W.Hammer, K.-W.Hoffmann

Der Zerfall des 84Rb und die Fluoreszenzausbeute von Krypton

RADIOACTIVITY 84Rb; measured T1/2, Eγ, Iγ, Xγ-coin, γγγ-triple coin; deduced branching ratios. Kr deduced K-shell fluorescence yield.

doi: 10.1007/BF02115802
Citations: PlumX Metrics


1969GR12      Z.Physik 225, 293 (1969)

H.-H.Grotheer, J.W.Hammer, K.-W.Hoffmann

Experimentelle Untersuchungen am Elektroneneinfang des 85Strontium und 88Yttrium

RADIOACTIVITY 85Sr; measured X(K)γ-coin; deduced K-capture rate. 85Rb level deduced T1/2. 88Y; measured X(K)γ-coin; deduced EC/β+ branching ratio.

ATOMIC PHYSICS Rb, Sr; deduced K-fluorescence yield.

doi: 10.1007/BF01395011
Citations: PlumX Metrics


1968HA47      Z.Physik 216, 355 (1968)

J.W.Hammer

Experimentelle Untersuchungen am Elektroneneinfang des Mangan 54 und Zink 65

RADIOACTIVITY 54Mn, 65Zn; measured T1/2, Eγ, Xγ-coin; deduced electron subshell capture rates, γ/β. Ge(Li) detector.

doi: 10.1007/BF01391530
Citations: PlumX Metrics


Back to query form