NSR Query Results

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NSR database version of April 11, 2024.

Search: Author = R.Siemssen

Found 155 matches.

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2008WU05      Phys.Rev. C 78, 041302 (2008)

A.H.Wuosmaa, J.P.Schiffer, K.E.Rehm, J.P.Greene, D.J.Henderson, R.V.F.Janssens, C.L.Jiang, L.Jisonna, J.C.Lighthall, S.T.Marley, E.F.Moore, R.C.Pardo, N.Patel, M.Paul, D.Peterson, S.C.Pieper, G.Savard, R.E.Segel, R.H.Siemssen, X.D.Tang, R.B.Wiringa

Structure of ⁷He by proton removal from ⁸Li with the (d, ³He) reaction

NUCLEAR REACTIONS ²H(⁸Li, ³He), E=76 MeV; ²H(⁷Li, t), (⁷Li, ³He), E=81 MeV; measured charged particle spectra, (particle)(particle)-coin, angular distributions, σ, σ(θ), spectroscopic factors. ⁷He; deduced levels, J, π. Comparisons with data from ²H(⁶He, p) experiment. Comparisons with nuclear structure models and variational quantum Monte Carlo calculations.

doi: 10.1103/PhysRevC.78.041302
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1789. Data from this article have been entered in the XUNDL database. For more information, click here.

2007WU05      Eur.Phys.J. Special Topics 150, 79 (2007)

A.H.Wuosmaa, K.E.Rehm, J.P.Greene, D.J.Henderson, R.V.F.Janssens, C.L.Jiang, L.Jisonna, J.C.Lighthall, S.T.Marley, E.F.Moore, R.C.Pardo, N.Patel, M.Paul, D.Peterson, S.C.Pieper, G.Savard, J.P.Schiffer, R.E.Segal, R.H.Siemssen, S.Sinha, X.Tang, R.B.Wiringa

Nucleon transfer reactions with exotic beams at ATLAS

doi: 10.1140/epjst/e2007-00271-y
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1886.

2005SE03      Nucl.Phys. A750, 245 (2005)

J.P.Seitz, B.B.Back, M.P.Carpenter, I.Dioszegi, K.Eisenman, P.Heckman, D.J.Hofman, M.P.Kelly, T.L.Khoo, S.Mitsuoka, V.Nanal, T.Pennington, R.H.Siemssen, M.Thoennessen, R.L.Varner

Observation of the hot GDR in neutron-deficient thorium evaporation residues

NUCLEAR REACTIONS ¹⁷⁶Yb(⁴⁸Ca, X), E=206, 219, 256, 259 MeV; measured Eγ, Iγ, (evaporation residue)γ-coin, γ-ray multiplicity and sum energy, fusion and evaporation residue σ. ²²⁴Th deduced GDR parameters. Comparison with model predictions.

doi: 10.1016/j.nuclphysa.2005.01.015
Citations: PlumX Metrics

2004NA03      Nucl.Phys. A731, 153 (2004)

V.Nanal, T.L.Khoo, D.J.Hofman, B.B.Back, M.P.Carpenter, I.Dioszegi, K.Eisenman, M.L.Halbert, P.Heckman, A.M.Heinz, D.Henderson, D.Jenkins, M.P.Kelly, F.G.Kondev, T.Lauritsen, C.J.Lister, B.McClintock, S.Mitsuoka, T.Pennington, J.Seitz, R.H.Siemssen, M.Thoennessen, R.J.van Swol, R.L.Varner, P.Wilt, Y.Alhassid

Highly Selective Studies of GDR in ¹⁶⁴Er

NUCLEAR REACTIONS ¹²⁴Sn(⁴⁰Ar, xn), E=163, 187 MeV; measured Eγ, Iγ, (recoil)γ-coin. ¹⁶⁴Er deduced GDR parameters, angular momentum dependence of strength function.

doi: 10.1016/j.nuclphysa.2003.11.028
Citations: PlumX Metrics

2004RE31      Nucl.Phys. A746, 354c (2004)

K.E.Rehm, C.L.Jiang, J.P.Greene, D.Henderson, R.V.F.Janssens, E.F.Moore, G.Mukherjee, R.C.Pardo, T.Pennington, J.P.Schiffer, S.Sinha, X.D.Tang, R.H.Siemssen, L.Jisonna, R.E.Segel, A.H.Wuosmaa

First studies of the ⁸B(α, p)¹¹C reaction

NUCLEAR REACTIONS ¹H(¹¹C, α), E=98-110 MeV; measured σ(θ). ⁸B(α, p), E^*=8.7-9.8 MeV; deduced excitation function, astrophysical reaction rate.

doi: 10.1016/j.nuclphysa.2004.09.052
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1133.

2003CA14      Phys.Lett. B 560, 155 (2003)

F.Camera, A.Bracco, V.Nanal, M.P.Carpenter, F.Della Vedova, S.Leoni, B.Million, S.Mantovani, M.Pignanelli, O.Wieland, B.B.Back, A.M.Heinz, R.V.F.Janssens, D.Jenkins, T.L.Khoo, F.G.Kondev, T.Lauritsen, C.J.Lister, B.McClintock, S.Mitsuoka, E.F.Moore, D.Seweryniak, R.H.Siemssen, R.J.Van Swol, D.Hofman, M.Thoennessen, K.Eisenman, P.Heckman, J.Seitz, R.Varner, M.Halbert, I.Dioszegi, A.Lopez-Martens

Radiative fusion from very symmetric reactions: the giant dipole resonance in the ¹⁷⁹Au nucleus

NUCLEAR REACTIONS ⁸⁹Y(⁹⁰Zr, γ), (⁹⁰Zr, xnyp), E=352 MeV; measured Eγ, Iγ, (recoil)γ-coin for 0-, 1-, and 2-nucleon evaporation; deduced statistical emission. ¹⁷⁹Au deduced excited GDR width. BaF₂ detectors, recoil separator.

doi: 10.1016/S0370-2693(03)00403-9
Citations: PlumX Metrics

2003DA03      Phys.Rev. C 67, 012801 (2003)

B.Davids, A.M.van den Berg, P.Dendooven, F.Fleurot, M.Hunyadi, M.A.de Huu, K.E.Rehm, R.E.Segel, R.H.Siemssen, H.W.Wilschut, H.J.Wortche, A.H.Wuosmaa

α-decay branching ratios of near-threshold states in ¹⁹Ne and the astrophysical rate of ¹⁵O(α, γ)¹⁹Ne

NUCLEAR REACTIONS ¹H(²¹Ne, t), E=43 MeV/nucleon; measured recoil and triton spectra, (recoil)(triton)-coin before and after residual nucleus decay. ¹⁹Ne deduced α-decay branching ratios and decay widths. ¹⁵O(α, γ), E not given; calculated astrophysical reaction rates.

doi: 10.1103/PhysRevC.67.012801
Citations: PlumX Metrics

2003DA13      Phys.Rev. C 67, 065808 (2003)

B.Davids, A.M.van den Berg, P.Dendooven, F.Fleurot, M.Hunyadi, M.A.de Huu, R.H.Siemssen, H.W.Wilschut, H.J.Wortche, M.Hernanz, J.Jose, K.E.Rehm, A.H.Wuosmaa, R.E.Segel

Astrophysical rate of ¹⁵O(α, γ)¹⁹Ne via the (p, t) reaction in inverse kinematics

NUCLEAR REACTIONS ¹H(²¹Ne, t), E=43 MeV/nucleon; measured particle spectra, yields, (particle)(recoil)-coin; deduced excitation energy spectrum. ¹⁹Ne levels deduced α-decay branching widths. ¹⁵O(α, γ), E=low; deduced astrophysical reaction rates.

doi: 10.1103/PhysRevC.67.065808
Citations: PlumX Metrics

2003DA25      Nucl.Phys. A718, 605c (2003)

B.Davids, A.M.van den Berg, P.Dendooven, F.Fleurot, M.Hunyadi, M.A.de Huu, K.E.Rehm, R.E.Segel, R.H.Siemssen, H.W.Wilschut, H.J.Wortche, A.H.Wuosmaa

Alpha-decay branching ratios of near-threshold states in ¹⁹Ne and the astrophysical rate of ¹⁵O(α, γ)¹⁹Ne

NUCLEAR REACTIONS ¹H(²¹Ne, t), E=43 MeV/nucleon; measured particle spectra, (recoil)(triton)-coin; deduced excitation energy spectra. ¹⁹Ne levels deduced α-decay branching ratios.

doi: 10.1016/S0375-9474(03)00899-6
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2003DA36      Phys.Rev. C 68, 055805 (2003)

B.Davids, J.P.M.Beijers, A.M.van den Berg, P.Dendooven, S.Harmsma, M.Hunyadi, M.A.de Huu, R.H.Siemssen, H.W.Wilschut, H.J.Wortche, M.Hernanz, J.Jose

Proton-decaying states in ²²Mg and the nucleosynthesis of ²²Na in novae

NUCLEAR REACTIONS ¹H(²⁴Mg, t), E=55 MeV/nucleon; measured particle spectra, (recoil)(triton)-coin. ²²Mg deduced levels, J, π, proton-decay branching ratios. Astrophysical implications discussed.

doi: 10.1103/PhysRevC.68.055805
Citations: PlumX Metrics

2003RE16      Phys.Rev. C 67, 065809 (2003)

K.E.Rehm, A.H.Wuosmaa, C.L.Jiang, J.Caggiano, J.P.Greene, A.Heinz, D.Henderson, R.V.F.Janssens, E.F.Moore, G.Mukherjee, R.C.Pardo, T.Pennington, J.P.Schiffer, R.H.Siemssen, M.Paul, L.Jisonna, R.E.Segel

Branching ratio Γ_α/Γ_γ of the 4.033 MeV 3/2⁺ state in ¹⁹Ne

NUCLEAR REACTIONS ³He(²⁰Ne, α), E ≈ 98 MeV; measured particle spectra, yields, (particle)(recoil)-coin; deduced excitation energy spectra. ¹⁹Ne levels deduced α-decay branching widths. ¹⁵O(α, γ), E=low; deduced astrophysical reaction rates.

doi: 10.1103/PhysRevC.67.065809
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1487.

2003RE25      Nucl.Phys. A718, 151c (2003)

K.E.Rehm, A.H.Wuosmaa, C.L.Jiang, J.Greene, A.Heinz, D.Henderson, R.V.F.Janssens, L.Jisonna, E.F.Moore, G.Mukherjee, R.C.Pardo, M.Paul, T.Pennington, J.P.Schiffer, R.E.Segel, R.H.Siemssen

The Branching Ratio Γ_α/Γ_γ of the 4.033 MeV State in ¹⁹Ne

NUCLEAR REACTIONS ³He(²⁰Ne, α), E=105 MeV; measured particle spectra, (particle)(recoil)-coin. ¹⁹Ne levels deduced α-branching ratios, radiative widths. ¹⁵O(α, γ), E=low; deduced astrophysical reaction rates.

doi: 10.1016/S0375-9474(03)00706-1
Citations: PlumX Metrics

2002HA15      Phys.Rev. C65, 035803 (2002)

B.Harss, C.L.Jiang, K.E.Rehm, J.P.Schiffer, J.Caggiano, P.Collon, J.P.Greene, D.Henderson, A.Heinz, R.V.F.Janssens, J.Nolen, R.C.Pardo, T.Pennington, R.H.Siemssen, A.A.Sonzogni, J.Uusitalo, I.Wiedenhover, M.Paul, T.F.Wang, F.Borasi, R.E.Segel, J.C.Blackmon, M.Smith, A.Chen, P.Parker

Widths of Astrophysically Important Resonances in ¹⁸Ne

NUCLEAR REACTIONS ¹H(¹⁷F, p), (¹⁷F, α), E(cm)=3.07-3.94 MeV; measured σ, σ(E, θ). ¹⁷F(p, p'), E(cm) ≈ 3.5 MeV; deduced σ(θ). ¹⁴O(α, p), E=low; deduced astrophysical reaction rates. ¹⁸Ne deduced resonance parameters.

doi: 10.1103/PhysRevC.65.035803
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1119.

2002RE29      Phys.Rev.Lett. 89, 132501 (2002)

K.E.Rehm, C.L.Jiang, I.Ahmad, J.Caggiano, P.Collon, J.P.Greene, D.Henderson, A.Heinz, R.V.F.Janssens, R.C.Pardo, T.Pennington, J.P.Schiffer, R.H.Siemssen, A.H.Wuosmaa, M.Paul, P.Mohr

Large Angle Elastic Alpha Scattering on a N = Z Nucleus above A = 40

NUCLEAR REACTIONS ⁴He(⁴⁴Ti, ⁴⁴Ti), (⁴⁴Ti, ⁴⁴Ti'), (⁴⁰Ca, ⁴⁰Ca), E(cm)=21.8 MeV; measured σ(θ); deduced angle-integrated σ, optical model parameters.

doi: 10.1103/PhysRevLett.89.132501
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1652.

2002VA08      Phys.Rev.Lett. 88, 122302 (2002)

M.J.van Goethem, L.Aphecetche, J.C.S.Bacelar, H.Delagrange, J.Diaz, D.d'Enterria, M.Hoefman, R.Holzmann, H.Huisman, N.Kalantar-Nayestanaki, A.Kugler, H.Lohner, G.Martinez, J.G.Messchendorp, R.W.Ostendorf, S.Schadmand, R.H.Siemssen, R.S.Simon, Y.Schutz, R.Turrisi, M.Volkerts, V.Wagner, H.W.Wilschut

Suppression of Soft Nuclear Bremsstrahlung in Proton-Nucleus Collisions

NUCLEAR REACTIONS C, Ni, Ag, Au(p, X), E=190 MeV; measured Eγ; deduced suppression of bremsstrahlung, role of multiple scattering.

doi: 10.1103/PhysRevLett.88.122302
Citations: PlumX Metrics

2001DE05      Nucl.Phys. A681, 291c (2001)

D.G.d'Enterria, L.Aphecetche, A.Chbihi, H.Delagrange, J.Diaz, M.J.van Goethem, M.Hoefman, H.Huisman, A.Kugler, H.Loehner, G.Martinez, R.Ortega, R.Ostendorf, S.Schadmand, Y.Schutz, R.Siemssen, D.Stracener, P.Tlusty, R.Turrisi, M.Volkerts, V.Wagner, H.Wilschut, N.Yahlali

Thermal Bremsstrahlung Probing the Thermodynamical State of Multifragmenting Systems

NUCLEAR REACTIONS ¹²C, ⁵⁸Ni, ¹⁰⁷Ag, ¹⁹⁷Au(³⁶Ar, X), E=60 MeV/nucleon; ¹²⁰Sn(¹²⁹Xe, X), E=50 MeV/nucleon; measured hard-photon yields; deduced contribution from thermal bremsstrahlung.

doi: 10.1016/S0375-9474(00)00530-3
Citations: PlumX Metrics

2001DE32      Phys.Rev.Lett. 87, 022701 (2001)

D.G.d'Enterria, L.Aphecetche, A.Chbihi, H.Delagrange, J.Diaz, M.J.van Goethem, M.Hoefman, A.Kugler, H.Lohner, G.Martinez, M.J.Mora, R.Ortega, R.W.Ostendorf, S.Schadmand, Y.Schutz, R.H.Siemssen, D.Stracener, P.Tlusty, R.Turrisi, M.Volkerts, V.Wagner, H.W.Wilschut, N.Yahlali

Evidence for Thermal Equilibration in Multifragmentation Reactions Probed with Bremsstrahlung Photons

NUCLEAR REACTIONS ¹²C, ⁵⁸Ni, ¹⁰⁷Ag, ¹⁹⁷Au(³⁶Ar, X), E=60 MeV/nucleon; measured Eγ, Iγ, multiplicity, angular distribution; deduced thermal equilibration, hard photon production mechanism features.

doi: 10.1103/PhysRevLett.87.022701
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2000HO18      Phys.Rev.Lett. 85, 1404 (2000)

M.Hoefman, L.Aphecetche, J.C.S.Bacelar, H.Delagrange, P.Descouvemont, J.Diaz, D.d'Enterria, M.-J.van Goethem, R.Holzmann, H.Huisman, N.Kalantar-Nayestanaki, A.Kugler, H.Lohner, F.M.Marques, G.Martinez, J.G.Messchendorp, R.W.Ostendorf, S.Schadmand, R.H.Siemssen, R.S.Simon, Y.Schutz, R.Timmermans, R.Turrisi, M.Volkerts, mV.Wagner, H.Weller, H.W.Wilschut, E.Wulf

Coherent Bremsstrahlung in the α + p System at 50 MeV/nucleon

NUCLEAR REACTIONS ¹H(α, X), E=200 MeV; measured Eγ, Iγ, bremsstrahlung σ(Eγ), γ(particle)-coin, coherent bremsstrahlung spectrum. ⁵Li deduced resonances energies, widths, σ. Comparison with direct capture calculations.

doi: 10.1103/PhysRevLett.85.1404
Citations: PlumX Metrics

2000MA84      Eur.Phys.J. A 9, 69 (2000)

T.Matulewicz, L.Aphecetche, Y.Charbonnier, H.Delagrange, K.K.Gudima, G.Martinez, M.Ploszajczak, Y.Schutz, V.D.Toneev, M.Appenheimer, R.Averbeck, J.Diaz, A.Doppenschmidt, M.J.van Goethem, S.Hlavac, M.Hoefman, R.Holzmann, F.Lefevre, A.Kugler, H.Lohner, A.Marin, V.Metag, R.Novotny, R.W.Ostendorf, R.H.Siemssen, R.S.Simon, R.Stratmann, H.Stroher, P.Tlusty, P.H.Vogt, V.Wagner, J.Weiss, H.W.Wilschut, F.Wissmann, A.R.Wolf, M.Wolf

Observation of Δ⁺ → pπ⁰ Decay in Heavy-Ion Collisions

NUCLEAR REACTIONS Ca(⁴⁰Ar, X), E=180 MeV/nucleon; measured pion-proton invariant mass distributions; deduced Δ⁺ resonance decay features.

doi: 10.1007/s100500070057
Citations: PlumX Metrics

2000SO01      Phys.Rev.Lett. 84, 1651 (2000)

A.A.Sonzogni, K.E.Rehm, I.Ahmad, F.Borasi, D.L.Bowers, F.Brumwell, J.Caggiano, C.N.Davids, J.P.Greene, B.Harss, A.Heinz, D.Henderson, R.V.F.Janssens, C.L.Jiang, G.McMichael, J.Nolen, R.C.Pardo, M.Paul, J.P.Schiffer, R.E.Segel, D.Seweryniak, R.H.Siemssen, J.W.Truran, J.Uusitalo, I.Wiedenhover, B.Zabransky

The ⁴⁴Ti(α, p) Reaction and Its Implication on the ⁴⁴Ti Yield in Supernovae

NUCLEAR REACTIONS ⁴⁴Ti(α, p), E(cm)=5.7-9 MeV; measured σ, astrophysical reaction rate. Comparison with statistical model calculations. Effects on the production of ⁴⁴Ti in core-collapsed supernovae discussed.

doi: 10.1103/PhysRevLett.84.1651
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC0609.

1999HA14      Phys.Rev.Lett. 82, 3964 (1999); Comment Phys.Rev.Lett. 84, 1635 (2000)

B.Harss, J.P.Greene, D.Henderson, R.V.F.Janssens, C.L.Jiang, J.Nolen, R.C.Pardo, K.E.Rehm, J.P.Schiffer, R.H.Siemssen, A.A.Sonzogni, J.Uusitalo, I.Wiedenhover, M.Paul, T.F.Wang, F.Borasi, R.E.Segel, J.C.Blackmon, M.S.Smith, A.Chen, P.Parker

Stellar Reactions with Short-Lived Nuclei: ¹⁷F(p, α)¹⁴O

NUCLEAR REACTIONS ¹H(¹⁷F, ¹⁴O), E(cm)=2.2-3.8 MeV; measured particle energies, (¹⁴O)α-coin, σ(E). ¹⁸Ne deduced resonance parameters. Implications for astrophysical processes discussed.

doi: 10.1103/PhysRevLett.82.3964
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1154.

1999HO34      Nucl.Phys. (Supplement) A654, 779c (1999)

M.Hoefman, H.W.Wilschut, L.Aphecetche, J.S.Bacelar, H.Delagrange, J.Diaz, M.J.van Goethem, R.Holzmann, H.Huisman, N.Kalantar-Nayestanaki, A.Kugler, H.Lohner, G.Martinez, J.G.Messchendorp, R.W.Ostendorf, S.Schadmand, Y.Schutz, M.Seip, R.H.Siemssen, R.S.Simon, R.Turrisi, M.Volkerts, V.Wagner

Coherent Bremsstrahlung in α + p Reactions at 50 MeV/Nucleon

NUCLEAR REACTIONS ¹H(α, X), (α, α'), E=200 MeV; measured Eγ, σ(θ), (light charged particle)γ-coin. Effects of capture to ⁵Li discussed.

doi: 10.1016/S0375-9474(00)88546-2
Citations: PlumX Metrics

1999MA57      Phys.Rev.Lett. 83, 1538 (1999)

G.Martinez, Y.Charbonnier, L.Aphecetche, H.Delagrange, K.K.Gudima, T.Matulewicz, M.Ploszajczak, Y.Schutz, V.Toneev, R.Turrisi, M.Appenheimer, V.Metag, R.Novotny, H.Stroher, A.R.Wolf, M.Wolf, J.Weiss, R.Averbeck, S.Hlavac, R.Holzmann, F.Lefevre, R.S.Simon, R.Stratmann, F.Wissmann, H.Hoefman, M.J.van Goethem, H.Lohner, R.W.Ostendorf, R.H.Siemssen, P.Vogt, H.W.Wilschut, J.Diaz, A.Marin, A.Kugler, P.Tlusty, V.Wagner, A.Doppenschmidt

Deep-Subthreshold η and π⁰ Production Probing Pion Dynamics in the Reaction Ar + Ca at 180A MeV

NUCLEAR REACTIONS Ca(⁴⁰Ar, X), E=180 MeV/nucleon; measured η mesons, neutral pions transverse mass distributions, production σ. Comparison with model predictions.

doi: 10.1103/PhysRevLett.83.1538
Citations: PlumX Metrics

1999MA59      Phys.Lett. 461B, 28 (1999)

G.Martinez, L.Aphecetche, Y.Charbonnier, H.Delagrange, D.d'Enterria, T.Matulewicz, Y.Schutz, R.Turrisi, M.Appenheimer, V.Metag, R.Novotny, H.Stroher, A.R.Wolf, M.Wolf, J.Weiss, R.Averbeck, S.Hlavac, R.Holzmann, F.Lefevre, R.S.Simon, R.Stratmann, F.Wissmann, M.Hoefman, M.J.van Goethem, H.Lohner, R.W.Ostendorf, R.H.Siemssen, P.Vogt, H.W.Wilschut, J.Diaz, A.Marin, A.Kugler, P.Tlusty, V.Wagner, A.Doppenschmidt

Photon Production in Heavy-Ion Collisions Close to the Pion Threshold

NUCLEAR REACTIONS Ca(⁴⁰Ar, X), E=180 MeV/nucleon; measured Eγ, Iγ, neutral pions transverse mass distribution, hard photon multiplicity.

doi: 10.1016/S0370-2693(99)00851-5
Citations: PlumX Metrics

1998LE12      Phys.Rev. C57, 2375 (1998)

X.Ledoux, H.G.Bohlen, J.Cugnon, H.Fuchs, J.Galin, B.Gatty, B.Gebauer, D.Guerreau, D.Hilscher, D.Jacquet, U.Jahnke, M.Josset, S.Leray, B.Lott, M.Morjean, B.M.Quednau, G.Roschert, H.Rossner, A.Peghaire, L.Pienkowski, R.H.Siemssen, C.Stephan

Formation and Decay of Hot Nuclei in 475 MeV, 2 GeV Proton- and 2 GeV ³He-Induced Reactions on Ag, Bi, Au, and U

NUCLEAR REACTIONS ¹⁰⁷Ag, ¹⁹⁷Au, ²⁰⁹Bi, ²³⁸U(p, X), E=0.475, 2 GeV; ¹⁰⁷Ag, ¹⁹⁷Au, ²⁰⁹Bi, ²³⁸U(³He, X), E=2 GeV; measured neutron multiplicity distributions, light-, intermediate-charged particle energy distributions, fission fragments; deduced compound nucleus temperature, other reaction mechanism features. Comparison with two-step cascade process model.

doi: 10.1103/PhysRevC.57.2375
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1997CA49      Phys.Rev. C56, 2700 (1997)

J.M.Casandjian, R.Lichtenthaler, W.Mittig, A.Lepine-Szily, A.C.C.Villari, G.Auger, R.Beunard, L.Bianchi, M.E.Brandan, J.L.Ciffre, A.Cunsolo, A.Foti, A.Menchaca-Rocha, N.A.Orr, E.Plagnol, R.H.Siemssen, J.P.Wieleczko

Atomic Effects in Heavy-Ion Elastic Scattering

NUCLEAR REACTIONS ²⁰⁸Pb(²⁰⁸Pb, ²⁰⁸Pb), E=786.7, 1029.9 MeV; Ag(²⁰⁸Pb, ²⁰⁸Pb), E=873.4, 1029.9, 1129.7 MeV; measured σ(θ); deduced atomic effects. Monte Carlo simulation analysis.

doi: 10.1103/PhysRevC.56.2700
Citations: PlumX Metrics

1997MA56      Phys.Lett. 409B, 77 (1997)

A.Marin, J.Diaz, R.Averbeck, S.Hlavac, R.Holzmann, F.Lefevre, A.Schubert, R.S.Simon, Y.Charbonnier, G.Martinez, Y.Schutz, F.M.Marques, M.Appenheimer, F.D.Berg, V.Metag, R.Novotny, H.Stroher, J.Weiss, A.R.Wolf, M.Wolf, H.Lohner, R.W.Ostendorf, R.H.Siemssen, P.Vogt, H.W.Wilschut, A.Kugler, R.Pleskac, P.Tlusty, V.Wagner, Gy.Wolf

Exclusive π⁰- and η-Meson Production in ⁴⁰Ar + (nat)Ca at 800A MeV

NUCLEAR REACTIONS Ca(⁴⁰Ar, X), E=800 MeV/nucleon; measured π⁰, η production σ, multiplicities, transverse mass distributions; deduced reaction mechanism features. Model comparisons.

doi: 10.1016/S0370-2693(97)00937-4
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1997SC29      Nucl.Phys. A622, 404 (1997)

Y.Schutz, G.Martinez, F.M.Marques, A.Marin, T.Matulewicz, R.W.Ostendorf, P.Bozek, H.Delagrange, J.Diaz, M.Franke, K.K.Gudima, S.Hlavac, R.Holzmann, P.Lautridou, F.Lefevre, H.Lohner, W.Mittig, M.Ploszajczak, J.H.G.van Pol, J.Quebert, P.Roussel-Chomaz, A.Schubert, R.H.Siemssen, R.S.Simon, Z.Sujkowski, V.D.Toneev, V.Wagner, H.W.Wilschut, Gy.Wolf

Hard Photons and Neutral Pions as Probes of Hot and Dense Nuclear Matter

NUCLEAR REACTIONS ⁵⁸Ni(⁸⁶Kr, X), E=60 MeV/nucleon; ¹⁹⁷Au(¹⁸¹Ta, X), E=40 MeV/nucleon; ¹⁹⁷Au(²⁰⁸Pb, X), E=30 MeV/nucleon; measured photon production spectra, correlations, other aspects; deduced high energy tail reaction mechanism.

doi: 10.1016/S0375-9474(97)00191-7
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1996GU07      Phys.Rev.Lett. 76, 2412 (1996)

K.K.Gudima, T.Matulewicz, H.Delagrange, F.M.Marques, G.Martinez, R.W.Ostendorf, M.Ploszajczak, Y.Schutz, V.D.Toneev, P.Bozek, S.Hlavac, R.Holzmann, A.Schubert, R.S.Simon, V.Wagner, H.Lohner, J.H.G.van Pol, R.H.Siemssen, H.W.Wilschut, J.Diaz, A.Marin

Subthreshold Pion Dynamics as a Source for Hard Photons Beyond Proton-Neutron Bremsstrahlung in Heavy-Ion Collisions

NUCLEAR REACTIONS Ni(⁸⁶Kr, X), E=60 MeV/nucleon; ¹⁹⁷Au(¹⁸¹Ta, X), E=40 MeV/nucleon; measured hard photon spectra; deduced π+N → N+γ channel dominance evidence. Dubna cascade model.

doi: 10.1103/PhysRevLett.76.2412
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1996HO07      Phys.Lett. 366B, 63 (1996)

R.Holzmann, A.Schubert, S.Hlavac, R.Kulessa, W.Niebur, R.S.Simon, P.Lautridou, F.Lefevre, M.Marques, T.Matulewicz, W.Mittig, R.W.Ostendorf, P.Roussel-Chomaz, Y.Schutz, H.Lohner, J.H.G.van Pol, R.H.Siemssen, H.W.Wilschut, F.Ballester, J.Diaz, A.Marin, G.Martinez, V.Metag, R.Novotny, V.Wagner, J.Quebert

Pion Reabsorption in Heavy-Ion Collisions Interpreted in Terms of the Δ Capture Process

NUCLEAR REACTIONS ¹⁹⁷Au(³⁶Ar, X), E=95 MeV/nucleon; measured π⁰ production associated energy differential σ; deduced detailed balance principle extension to broad-width resonances.

doi: 10.1016/0370-2693(95)01342-3
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1996QU01      Nucl.Phys. A606, 538 (1996)

B.M.Quednau, E.Crema, J.Galin, B.Gebauer, D.Hilscher, D.Jacquet, U.Jahnke, X.Ledoux, A.Lepine-Szily, S.Leray, B.Lott, M.Morjean, A.Peghaire, L.Pienkowski, S.Proschitzki, G.Roschert, H.Rossner, R.H.Siemssen, C.Stephan

Decay Patterns of Target-Like and Projectile-Like Nuclei Produced in ⁸⁴Kr + ¹⁹⁷Au, (nat)U Reactions at E/A = 150 MeV

NUCLEAR REACTIONS U, ¹⁹⁷Au(⁸⁴Kr, X), E=150 MeV/nucleon; measured neutron multiplicities, energy dissipation; deduced fission probabilities.

doi: 10.1016/0375-9474(96)00185-6
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1996VA09      Phys.Rev.Lett. 76, 1425 (1996)

J.H.G.van Pol, H.W.Wilschut, H.Lohner, R.H.Siemssen, P.Lautridou, F.Lefevre, T.Matulewicz, M.Marques, W.Mittig, R.W.Ostendorf, P.Roussel-Chomaz, Y.Schutz, S.Hlavac, R.Holzmann, A.Schubert, R.S.Simon, V.Wagner, M.Franke, W.Kuhn, M.Notheisen, R.Novotny, F.Ballester, J.Diaz, A.Marin, G.Martinez, A.Kugler

Importance of One- Two-Body Dissipation at Intermediate Energies Studied by Hard Photons

NUCLEAR REACTIONS ¹⁵⁹Tb(³⁶Ar, X), E=44 MeV/nucleon; measured hard (photon)(fragment)-coin; deduced one-, two-body dissipation role.

doi: 10.1103/PhysRevLett.76.1425
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1996WI12      Acta Phys.Pol. B27, 517 (1996)

J.Wilczynski, K.Siwek-Wilczynska, R.H.Siemssen, H.W.Wilschut

Neutron Clock as a Friction-Meter

NUCLEAR REACTIONS ²³⁸U(⁴⁰Ar, F), E=249; ¹⁹⁷Au, ²⁰⁸Pb, ²³⁸U(⁶⁴Ni, F), E=418 MeV; analyzed prescission neutron multiplicities data; deduced friction coefficients, need to change energy dissipation.

1995GH03      Nucl.Phys. A583, 401c (1995)

C.Ghisalberti, C.Lebrun, L.Sezac, D.Ardouin, A.Chbihi, H.Dabrowski, B.Erazmus, P.Eudes, J.Galin, D.Guerreau, F.Guilbault, P.Lautridou, R.Lednicky, M.Morjean, A.Peghaire, J.Pluta, J.Quebert, A.Rahmani, T.Reposeur, R.Siemssen

Interferometry Measurements Selected by Neutron Calorimetry

NUCLEAR REACTIONS ⁹³Nb(²⁰⁸Pb, X), E=29 MeV/nucleon; measured pp-correlation; deduced equilibrium, preequilibrium emission evidence.

doi: 10.1016/0375-9474(94)00694-I
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1995LE06      Nucl.Phys. A583, 263c (1995)

A.Lepine-Szily, J.M.Casandjian, W.Mittig, A.C.C.Villari, R.Lichtenthaler Filho, G.Auger, L.Bianchi, R.Beunard, M.E.Brandan, J.L.Ciffre, A.Cunsolo, A.Foti, L.Gaudard, A.Menchaca-Rocha, N.A.Orr, E.Plagnol, Y.Schutz, R.H.Siemssen, J.P.Wieleczko

The High Precision Measurement of ²⁰⁸Pb + ²⁰⁸Pb Mott Scattering at Energies Under the Coulomb Barrier: The observation of new atomic effects

NUCLEAR REACTIONS ²⁰⁸Pb, ²³⁸U(²⁰⁸Pb, ²⁰⁸Pb), E ≈ 5 MeV/nucleon; measured Mott, elastic scattering; deduced new atomic effects related features.

doi: 10.1016/0375-9474(94)00670-I
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1995MA29      Phys.Lett. 349B, 23 (1995)

G.Martinez, M.Marques, Y.Schutz, Gy.Wolf, J.Diaz, M.Franke, S.Hlavac, R.Holzmann, P.Lautridou, F.Lefevre, H.Lohner, A.Marin, T.Matulewicz, W.Mittig, R.W.Ostendorf, J.H.G.van Pol, J.Quebert, P.Roussel-Chomaz, A.Schubert, R.H.Siemssen, R.S.Simon, Z.Sujkowski, V.Wagner, H.W.Wilschut

Bremsstrahlung Photons as a Probe of Hot Nuclei

NUCLEAR REACTIONS Ni(⁸⁶Kr, X), E=60 MeV/nucleon; ¹⁹⁷Au(¹⁸¹Ta, X), E=39.5 MeV/nucleon; ¹⁹⁷Au(²⁰⁸Pb, X), E=20.5 MeV/nucleon; measured hard photon spectra; deduced bremsstrahlung produced thermal hard photon production, nuclear matter incompressibility correlation. BUU theory.

doi: 10.1016/0370-2693(95)00236-E
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1995MA30      Phys.Lett. 349B, 30 (1995)

F.M.Marques, G.Martinez, Y.Schutz, J.Diaz, M.Franke, S.Hlavac, R.Holzmann, P.Lautridou, F.Lefevre, H.Lohner, A.Marin, T.Matulewicz, W.Mittig, R.W.Ostendorf, J.H.G.van Pol, J.Quebert, P.Roussel-Chomaz, A.Schubert, R.H.Siemssen, R.S.Simon, Z.Sujkowski, V.Wagner, H.W.Wilschut, Gy.Wolf

Density Oscillations in Systems of Colliding Heavy Ions Observed via Hard-Photo Interferometry Measurements

NUCLEAR REACTIONS Ni(⁸⁶Kr, X), E=60 MeV/nucleon; ¹⁹⁷Au(¹⁸¹Ta, X), E=39.5 MeV/nucleon; analyzed hard photon production data; deduced incomlete fusion produced nuclear matter density oscillations role.

doi: 10.1016/0370-2693(95)00237-F
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1995MO31      Nucl.Phys. A591, 371 (1995)

M.Morjean, C.Lebrun, D.Ardouin, A.Chbihi, H.Dabrowski, B.Erazmus, P.Eudes, J.Galin, D.Guerreau, F.Guilbault, C.Ghisalberti, D.Jacquet, P.Lautridou, R.Lednicky, A.Peghaire, Y.Perier, J.Pluta, J.Quebert, A.Rahmani, T.Reposeur, L.Sezac, R.H.Siemssen

Temperature and Excitation Energy Determination in ²⁰⁸Pb + ¹⁹⁷Au Reactions at 29 MeV/u

NUCLEAR REACTIONS ¹⁹⁷Au(²⁰⁸Pb, X), E=6032 MeV; measured Eα, neutron multiplicity; deduced projectile-like fragments excitation energy, temperature. Model comparison.

doi: 10.1016/0375-9474(95)00200-K
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1995SC06      Nucl.Phys. A583, 385c (1995)

A.Schubert, R.Holzmann, S.Hlavac, R.Kulessa, R.S.Simon, V.Wagner, P.Lautridou, F.Lefevre, M.Marques, T.Matulewicz, W.Mittig, R.W.Ostendorf, P.Roussel-Chomaz, Y.Schutz, H.Lohner, J.H.G.van Pol, R.H.Siemssen, H.W.Wilschut, F.Ballester, J.Diaz, A.Marin, G.Martinez, V.Metag, R.Novotny, J.Quebert

A Systematic Study of Neutral Pion Squeeze-Out at Intermediate Energies

NUCLEAR REACTIONS ¹⁹⁷Au(³⁶Ar, X), E=95 MeV/nucleon; measured projectile-like fragment mass vs charge distribution, π⁰ multiplicity vs projectile-like fragment charge, σ(π⁰(φ)); deduced dynamical effects related features.

doi: 10.1016/0375-9474(94)00691-F
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1995SH14      Phys.Lett. 348B, 29 (1995)

S.Shimoura, T.Nakamura, M.Ishihara, N.Inabe, T.Kobayashi, T.Kubo, R.H.Siemssen, I.Tanihata, Y.Watanabe

Coulomb Dissociation Reaction and Correlations of Two Halo Neutrons in ¹¹Li

NUCLEAR REACTIONS Pb(¹¹Li, 2n⁹Li), E=43 MeV/nucleon; measured particle spectra following projectile breakup, E(n(relative)); deduced ¹¹Li excitation spectrum, mechanism. Di-neutron model.

doi: 10.1016/0370-2693(95)00131-4
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1995SI06      Phys.Rev. C51, 2054 (1995)

K.Siwek-Wilczynska, J.Wilczynski, R.H.Siemssen, H.W.Wilschut

Role of Nuclear Dynamics in Deducing the Fusion-Fission Time Scales from Prescission Neutron Multiplicities

NUCLEAR REACTIONS ²³⁸U, ¹⁹⁷Au, ¹⁶⁹Tm, ^154,144Sm, ¹²⁴Sn(¹⁸O, X), (¹⁸O, F), E=158.8 MeV; ²³⁸U, ²⁰⁸Pb, ¹⁹⁷Au, ¹⁸⁴W, ¹⁵⁴Sm, ¹⁰⁹Ag(¹⁶O, X), (¹⁶O, F), E=288 MeV; ²³⁸U, ²⁰⁸Pb, ¹⁹⁷Au, ¹⁸¹Ta, ¹⁶⁹Tm, ¹⁶⁵Ho, ¹⁴¹Pr(⁴⁰Ar, F), (⁴⁰Ar, X), E=249 MeV; ²³⁸U, ¹⁹⁷Au, ¹⁷⁵Lu, ¹⁵⁴Sm(⁶⁴Ni, X), (⁶⁴Ni, F), E=417.7 MeV; analyzed data; deduced fusion-fission time scale. Time-dependent statistical cascade plus Feldmeier's collision dynamics model.

doi: 10.1103/PhysRevC.51.2054
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1995SI07      Nucl.Phys. A583, 141c (1995)

K.Siwek-Wilczynska, J.Wilczynski, R.H.Siemssen, H.W.Wilschut

Time Scales of Fusion-Fission Reactions Calculated from Prescission Neutron Multiplicities

doi: 10.1016/0375-9474(94)00648-7
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1995VA06      Nucl.Phys. A583, 373c (1995)

J.H.G.van Pol, F.Ballester, J.Diaz, M.Franke, S.Hlavac, R.Holzmann, W.Kuhn, A.Kugler, P.Lautridou, F.Lefevre, H.Lohner, A.Marin, M.Marques, G.Martinez, T.Matulewicz, W.Mittig, M.Notheisen, R.Novotny, R.W.Ostendorf, P.Roussel-Chomaz, R.H.Siemssen, A.Schubert, Y.Schutz, R.S.Simon, V.Wagner, H.W.Wilschut

Hard Photons as a Probe to Study Dissipation Mechanisms

NUCLEAR REACTIONS ¹⁵⁹Tb(³⁶Ar, X), E=44 MeV/nucleon; measured bremsstrahlung probability vs projectile-like fragment mass.

doi: 10.1016/0375-9474(94)00689-K
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1995WI07      Nucl.Phys. A584, 573 (1995)

A.Wieloch, J.Brzychczyk, K.Grotowski, H.K.W.Leegte, S.Micek, P.Pawlowski, R.Planeta, R.H.Siemssen, Z.Sosin, H.W.Wilschut, K.Siwek-Wilczynska, J.Wilczynski

Missing Momentum Vector in the ¹⁹⁷Au(²⁰Ne;F₁, F₂, PLF) Reaction at 15 MeV/u

NUCLEAR REACTIONS ¹⁹⁷Au(²⁰Ne, F), E=294 MeV; measured fission, (fragment)(fragment)-coin, σ(Z, E, θ) of projectile-like fragments; deduced fission probabilities.

doi: 10.1016/0375-9474(94)00528-U
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1994BA45      Nucl.Phys. A575, 348 (1994)

A.Balanda, J.C.S.Bacelar, E.Betak, J.A.Bordewijk, A.Krasznahorkay, H.van der Ploeg, R.H.Siemssen, H.W.Wilschut, A.van der Woude

Photons in the Proton-Induced Reaction with In at E(p) = 50 MeV

NUCLEAR REACTIONS, ICPND ¹¹⁵In(p, γ), E-50 MeV; measured inclusive γ spectra, γ-yield; deduced hard γ-emission probability per pn-collision. ¹¹⁶Sn deduced GDR parameters. Compound, preequilibrium model analysis.

doi: 10.1016/0375-9474(94)90194-5
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1994MA43      Phys.Rev.Lett. 73, 34 (1994)

M.Marques, R.W.Ostendorf, P.Lautridou, F.Lefevre, T.Matulewicz, W.Mittig, P.Roussel-Chomaz, Y.Schutz, J.Quebert, J.Diaz, A.Marin, G.Martinez, R.Holzmann, S.Hlavac, A.Schubert, R.S.Simon, V.Wagner, H.Lohner, J.H.G.van Pol, R.H.Siemssen, H.W.Wilschut, M.Franke, Z.Sujkowski

Hard Photon Intensity Interferometry in Heavy Ion Reactions

NUCLEAR REACTIONS Ni(⁸⁶Kr, X), E=60 MeV/nucleon; measured hard γγ-correlation function; deduced Hanbury-Brown-Twiss effect evidence.

doi: 10.1103/PhysRevLett.73.34
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1994MA45      Phys.Lett. 334B, 23 (1994)

G.Martinez, J.Diaz, M.Franke, S.Hlavac, R.Holzmann, P.Lautridou, F.Lefevre, H.Lohner, A.Marin, M.Marques, T.Matulewicz, W.Mittig, R.W.Ostendorf, J.H.G.van Pol, J.Quebert, P.Roussel-Chomaz, Y.Schutz, A.Schubert, R.H.Siemssen, R.S.Simon, Z.Sujkowski, V.Wagner, H.W.Wilschut

Impact Parameter Dependence of Hard Photon Production in Intermediate Energy Heavy-Ion Collisions

NUCLEAR REACTIONS Ni(⁸⁶Kr, X), E=60 MeV/nucleon; measured γ-multiplicity vs fragment mass, charged particle multiplicity; deduced hard photon production impact parameter dependence.

doi: 10.1016/0370-2693(94)90586-X
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1994PI06      Acta Phys.Pol. B25, 737 (1994)

L.Pienkowski, S.Leray, J.Galin, D.Guerreau, X.Ledoux, B.Lott, M.Morjean, A.Peghaire, H.-G.Bohlen, H.Fuchs, B.Gebauer, D.Hilscher, U.Jahnke, G.Roschert, H.Rossner, B.Gatty, D.Jacquet, C.Stephan, R.Siemssen, J.Cugnon

Thermal Excitation Energy Distribution of 475 MeV and 2 GeV Proton and ³He Induced Reactions in Heavy Nuclei

NUCLEAR REACTIONS U, ²⁰⁹Bi, ¹⁹⁷Au, Ag(p, xn), E=0.475, 2 GeV; Ag, ¹⁹⁷Au, ²⁰⁹Bi, U(³He, xn), E=2 GeV; measured neutron multiplicity distributions; deduced thermal excitation energy distribution. Intra-nuclear cascade model analysis.

1994PI08      Phys.Lett. 336B, 147 (1994)

L.Pienkowski, H.G.Bohlen, J.Cugnon, H.Fuchs, J.Galin, B.Gatty, B.Gebauer, D.Guerreau, D.Hilscher, D.Jacquet, U.Jahnke, M.Josset, X.Ledoux, S.Leray, B.Lott, M.Morjean, A.Peghaire, G.Roschert, H.Rossner, R.H.Siemssen, C.Stephan

Hot Nuclei in Reactions Induced by 475 MeV, 2 GeV ¹H and 2 GeV ³He

NUCLEAR REACTIONS Ag, ¹⁹⁷Au, ²⁰⁹Bi, U(p, nX), E=0.475, 2 GeV; Ag, ¹⁹⁷Au, ²⁰⁹Bi, U(³He, nX), E=2 GeV; measured inclusive neutron multiplicity distributions. Intranuclear cascade analysis.

doi: 10.1016/0370-2693(94)00910-4
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1994SC16      Phys.Rev.Lett. 72, 1608 (1994)

A.Schubert, R.Holzmann, S.Hlavac, R.Kulessa, W.Niebur, R.S.Simon, P.Lautridou, F.Lefevre, M.Marques, T.Matulewicz, W.Mittig, R.W.Ostendorf, P.Roussel-Chomaz, Y.Schutz, H.Lohner, J.H.G.van Pol, R.H.Siemssen, H.W.Wilschut, F.Ballester, J.Diaz, A.Marin, G.Martinez, V.Metag, R.Novotny, V.Wagner, J.Quebert

Evidence for Stopping in Heavy-Ion Collisions from a Study of Hard-Photon Source Velocities

NUCLEAR REACTIONS ¹²C, ¹⁹⁷Au(³⁶Ar, X), E=95 MeV/nucleon; measured hard Eγ; deduced photon source velocity vs system size, impact parameter, Eγ; deduced photon emission mechanism.

doi: 10.1103/PhysRevLett.72.1608
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1994SC18      Phys.Lett. 328B, 10 (1994)

A.Schubert, R.Holzmann, S.Hlavac, R.Kulessa, W.Niebur, R.S.Simon, P.Lautridou, F.Lefevre, M.Marques, T.Matulewicz, W.Mittig, R.W.Ostendorf, P.Roussel-Chomaz, Y.Schutz, H.Lohner, J.H.G.van Pol, R.H.Siemssen, H.W.Wilschut, F.Ballester, J.Diaz, A.Marin, G.Martinez, V.Metag, R.Novotny, V.Wagner, J.Quebert

Investigation of Polar and Azimuthal Distributions of Subthreshold Pions at Intermediate Energies

NUCLEAR REACTIONS ¹⁹⁷Au, ¹²C(³⁶Ar, X), E=95 MeV/nucleon; measured projectile-like fragment mass vs Z, π⁰ multiplicity versus fragment charge, σ(θ(π)), σ(φ(π)); deduced nucleon-nucleon collision features probing possibility.

doi: 10.1016/0370-2693(94)90420-0
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1994SO09      Nucl.Phys. A574, 474 (1994)

Z.Sosin, J.Brzychczyk, K.Grotowski, J.D.Hinnefeld, E.E.Koldenhof, T.Kozik, H.K.W.Leegte, J.Lukasik, S.Micek, R.Planeta, R.H.Siemssen, A.Wieloch, H.W.Wilschut

Intermediate-Mass Fragments in ¹⁴N + ¹⁵⁹Tb/(nat)Ag/(nat)Cu Reactions at 22 MeV/u

NUCLEAR REACTIONS ¹⁵⁹Tb, Ag, Cu(¹⁴N, X), E=22 MeV/nucleon; measured intermediate mass fragment σ(Z, E, θ), three components identified in σ(E), σ(θ). Phenomenological mass, momentum transfer, random-walk model analysis.

doi: 10.1016/0375-9474(94)90241-0
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1993CA37      Nucl.Instrum.Methods Phys.Res. A334, 301 (1993)

J.M.Casandjian, W.Mittig, R.Beunard, L.Gaudard, A.Lepine-Szily, A.C.C.Villari, G.Auger, L.Bianchi, A.Cunsolo, A.Foti, R.Lichtenthaler Filho, E.Plagnol, Y.Schutz, R.H.Siemssen, J.P.Wieleczko

Absolute Measurement of the GANIL Beam Energy

NUCLEAR REACTIONS ²⁰⁸Pb(²⁰⁸Pb, ²⁰⁸Pb), E ≈ 1 GeV; measured ²⁰⁸Pb particle time of flight; deduced cyclotrom beam energy.

doi: 10.1016/0168-9002(93)90789-K
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1993SI07      Phys.Rev. C48, 228 (1993)

K.Siwek-Wilczynska, J.Wilczynski, H.K.W.Leegte, R.H.Siemssen, H.W.Wilschut, K.Grotowski, A.Panasiewicz, Z.Sosin, A.Wieloch

Symmetric and Asymmetric Ternary Fission of Hot Nuclei

NUCLEAR REACTIONS ²³²Th(⁴⁰Ar, X), (⁴⁰Ar, F), E=365 MeV; measured σ(Eα, θα), fission (fragment)(fragment)α-coin following fusion-fission; deduced hot nuclei fission characteristics.

doi: 10.1103/PhysRevC.48.228
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1993VI06      Phys.Rev.Lett. 71, 2551 (1993)

A.C.C.Villari, W.Mittig, A.Lepine-Szily, R.Lichtenthaler Filho, G.Auger, L.Bianchi, R.Beunard, J.M.Casandjian, J.L.Ciffre, A.Cunsolo, A.Foti, L.Gaudard, C.L.Lima, E.Plagnol, Y.Schutz, R.H.Siemssen, J.P.Wieleczko

Search for Color van der Waals Force in ²⁰⁸Pb + ²⁰⁸Pb Mott Scattering

NUCLEAR REACTIONS ²⁰⁸Pb(²⁰⁸Pb, ²⁰⁸Pb), E=873.4, 1129.74 MeV; measured Mott scattering σ(θ); deduced color van der Waals force strength.

doi: 10.1103/PhysRevLett.71.2551
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1992LE13      Phys.Rev. C46, 991 (1992)

H.K.W.Leegte, A.L.Boonstra, J.D.Hinnefeld, E.E.Koldenhof, R.H.Siemssen, K.Siwek-Wilczynska, Z.Sosin, J.Wilczynski, H.W.Wilschut

Fusionlike Processes in the ¹⁴N + ²³²Th Reaction at 30 MeV/Nucleon

NUCLEAR REACTIONS ²³²Th(¹⁴N, F), E=420 MeV; measured fission (fragment)(nonequilibrium charged particle)-coin; deduced complex particle production mechanism, σ partition.

doi: 10.1103/PhysRevC.46.991
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1991KO08      Nucl.Phys. A526, 303 (1991)

B.Kotlinski, H.W.Wilschut, P.C.N.Crouzen, H.Kaper, E.E.Koldenhof, H.K.W.Leegte, R.H.Siemssen, Y.X.Xie

The ²⁰Ne + ¹⁵⁹Tb Reaction Studied with the K X-Ray Method at 15 MeV/Nucleon

NUCLEAR REACTIONS ¹⁵⁹Tb(²⁰Ne, X), E=294 MeV; measured (fragment)(X-ray)-coin; deduced partial σ, quasielastic, deep-inelastic components. Statistical model analysis.

doi: 10.1016/0375-9474(91)90289-I
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1990RY05      Nucl.Phys. A517, 159 (1990)

P.Rymuza, D.Chmielewska, Z.Sujkowski, G.J.Balster, B.Kotlinski, R.H.Siemssen, H.W.Wilschut

K-Shell Ionization Induced by 4.5 MeV/u ⁴⁰Ar Ions Undergoing Fusion Reactions

NUCLEAR REACTIONS ⁵¹V, ⁵⁹Co, ⁶²Ni(⁴⁰Ar, xnypzα), E=180 MeV; measured E (X-ray), I(X-ray), (X-ray)γ-, (X-ray)p-, (X-ray)α-coin; deduced projectile induced K-shell ionization probability, Doppler, multiple ionization energy shifts.

ATOMIC PHYSICS ⁵¹V, ⁵⁹Co, ⁶²Ni(⁴⁰Ar, xnypzα), E=180 MeV; measured E (X-ray), I (X-ray), (X-ray)γ-, (X-ray)p-, (X-ray)α-coin; deduced projectile induced K-shell ionization probability, Doppler, multiple ionization energy shifts.

doi: 10.1016/0375-9474(90)90266-O
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1989HI09      Phys.Lett. 225B, 308 (1989)

J.D.Hinnefeld, E.E.Koldenhof, H.K.W.Leegte, R.H.Siemssen, Z.Sosin, H.W.Wilschut, Z.Zhang

An Explicit Partition of the Fusion-Like Cross Section

NUCLEAR REACTIONS ¹⁵⁹Tb(¹⁴N, X), E=309 MeV; measured σ(evaporation residue θ) vs velocity; deduced incomplete momentum transfer description. Explicit partition techniques.

doi: 10.1016/0370-2693(89)90573-X
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1989KO43      Phys.Lett. 233B, 277 (1989)

B.Kotlinski, H.W.Wilschut, P.C.N.Crouzen, H.J.Kaper, E.E.Koldenhof, H.K.W.Leegte, R.H.Siemssen, Y.X.Xie

Quasi-Elastic and Deep-Inelastic Primary Cross Sections in the ²⁰Ne + ¹⁵⁹Tb Reaction at 15 MeV/U

NUCLEAR REACTIONS ¹⁵⁹Tb(²⁰Ne, X), E=294 MeV; measured K X-ray spectra; deduced σ(fragment θ) vs missing charge.

doi: 10.1016/0370-2693(89)91309-9
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1989WI08      Phys.Lett. 220B, 497 (1989)

J.Wilczynski, J.D.Hinnefeld, E.E.Koldenhof, H.K.W.Leegte, R.H.Siemssen, H.W.Wilschut, Y.X.Xie

Generation and Division of Excitation Energy in Heavy-Ion Collisions Studied by Measuring Charged-Particle Survival Fractions

NUCLEAR REACTIONS ¹⁹⁷Au(⁴⁰Ar, X), E=450 MeV; measured projectile-like fragment energy spectra; deduced particle survival fractions.

doi: 10.1016/0370-2693(89)90775-2
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1988ZH12      Nucl.Phys. A488, 409c (1988)

Y.-T.Zhu, W.-Q.Shen, X.-Q.Hu, Y.-X.Xie, W.-L.Zhan, X.Zhu, S.-L.Li, P.C.N.Crouzen, E.E.Koldenhof, B.Kotlinski, R.H.Siemssen, H.W.Wilschut

Search for Incomplete Deep Inelastic Collision

NUCLEAR REACTIONS ²⁷Al(²⁰Ne, αX), E=10.8 MeV/nucleon; measured invariant σ(Eα, θα); deduced reaction mechanism.

doi: 10.1016/0375-9474(88)90278-3
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1987BA38      Nucl.Phys. A468, 93 (1987)

G.J.Balster, P.C.N.Crouzen, P.B.Goldhoorn, R.H.Siemssen, H.W.Wilschut

Systematics of the ¹⁴N + ¹⁵⁹Tb Reaction between 6 and 22 MeV/u: I. Inclusive Data

NUCLEAR REACTIONS ¹⁵⁹Tb(¹⁴N, ¹⁴N), (¹⁴N, X), E=92, 112, 140, 168, 236, 309 MeV; measured elastic σ(fragment Z, A, E, θ) for fragment Z ≤ 9; deduced global reaction systematics. Natural target.

doi: 10.1016/0375-9474(87)90320-4
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1987BA39      Nucl.Phys. A468, 131 (1987)

G.J.Balster, H.W.Wilschut, R.H.Siemssen, P.C.N.Crouzen, P.B.Goldhoorn, Z.Sujkowski

Systematics of the ¹⁴N + ¹⁵⁹Tb Reaction between 6 and 22 MeV/u (II). The Cross Section Balance Obtained with KX-ray Method

NUCLEAR REACTIONS ¹⁵⁹Tb(¹⁴N, X), E=115, 140, 168, 236, 309 MeV; measured (fragment)(K X-ray)-coin, σ(fragment Z, E) vs mass, E(K X-ray) for fragment Z ≤ 8, γ-multiplicity; deduced σ(fragment Z, mass) vs Z of residual nucleus, sequential decay probabilities, primary σ, (Q(GG)) dependence. Natural target.

doi: 10.1016/0375-9474(87)90321-6
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1987BA51      Nucl.Phys. A471, 635 (1987)

G.J.Balster, R.H.Siemssen, H.W.Wilschut

Systematics of the ¹⁴N + ¹⁵⁹Tb Reaction between 6 and 22 MeV/u: The origin of fast α-particles

NUCLEAR REACTIONS, ICPND ¹⁵⁹Tb(¹⁴N, αX), E=92, 112, 115, 140, 168, 236, 309 MeV; measured (fragment)(K X-ray)coin; deduced σ(E), σ(α)(Z(res)) decomposition.

doi: 10.1016/0375-9474(87)90104-7
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1987KE04      Phys.Rev. C36, 1364 (1987)

J.G.Keller, B.B.Back, B.G.Glagola, D.Henderson, S.B.Kaufman, S.J.Sanders, R.H.Siemssen, F.Videbaek, B.D.Wilkins, A.Worsham

Distribution of Reaction Strength in ³²S + ¹⁸²W Collisions

NUCLEAR REACTIONS ¹⁸²W(³²S, ³²S), (³²S, X), E=166, 177, 222, 260 MeV; measured σ(θ); deduced reaction, deep inelastic, fission σ(E), fission product mass, reaction strength distributions.

doi: 10.1103/PhysRevC.36.1364
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1987SU14      Phys.Lett. 196B, 122 (1987)

Z.Sujkowski, D.Chmielewska, P.Rymuza, G.J.Balster, B.Kotlinski, R.H.Siemssen, H.W.Wilschut

Direct Inner Shell Ionization accompanying Nuclear Fusion Reactions with Heavy Ions

NUCLEAR REACTIONS ⁵¹V, ⁵⁹Co, ⁶²Ni(⁴⁰Ar, X), E=4.5 MeV/nucleon; measured fusion evaporation residue K X-ray spectra, yields; deduced prior fusion K-shell ionization.

doi: 10.1016/0370-2693(87)90590-9
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1985SA24      Nucl.Phys. A441, 640 (1985)

H.Sakai, R.K.Bhowmik, S.Brandenburg, J.H.Van Dijk, A.G.Drentje, M.N.Harakeh, Y.Iwasaki, R.H.Siemssen, S.Y.Van Der Werf, A.Van Der Woude

γ-Decay of the Deeply-Bound Hole States in ¹⁰¹Pd, ¹⁰⁵Pd, ¹⁰⁷Pd, ¹¹¹Sn, ¹¹⁷Sn Observed in the (³He, αγ) Reaction at 70 MeV

NUCLEAR STRUCTURE ^101,105,107Pd; calculated levels, δ, γ-branching. Quasiparticle-plus-rotor model.

NUCLEAR REACTIONS ^102,106,108Pd, ^112,118Sn(³He, αγ), E=70 MeV; measured αγ-coin, Iγ(θ). ^101,105,107Pd, ^111,117Sn levels deduced C²S, mixing ratio. DWBA analysis. Enriched targets, magnetic spectrometer. NaI, Ge detectors.

doi: 10.1016/0375-9474(85)90442-7
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1985SI20      Phys.Lett. 161B, 261 (1985)

R.H.Siemssen, G.J.Balster, H.W.Wilschut, P.D.Bond, P.C.N.Crouzen, P.B.Goldhoorn, Han Shukui, Z.Sujkowski

Cross Section Balance in the ¹⁴N + ¹⁵⁹Tb Reaction and the Origin of Fast Alpha Particles

NUCLEAR REACTIONS ¹⁵⁹Tb(¹⁴N, ⁷Li), (¹⁴N, ⁹Be), (¹⁴N, ¹¹B), (¹⁴N, ¹²C), (¹⁴N, α), E=236 MeV; measured (particle)(X-ray)-coin; deduced exclusive σ(θ), primary fragment σ(θ), α-multiplicities, α-production mechanism.

doi: 10.1016/0370-2693(85)90757-9
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1984BA43      Phys.Lett. 143B, 79 (1984)

G.J.Balster, R.K.Bhowmik, P.B.Goldhoorn, R.H.Siemssen, Z.Sujkowski, H.W.Wilschut

Probabilities for Sequential Decay of Projectile-Like Fragments in Reactions with Light Heavy Ions

NUCLEAR REACTIONS ¹⁵⁹Tb(¹⁴N, X), E=115, 168 MeV; measured (projectile like fragment)X-ray-coin; deduced fragment sequential decay probabilities.

doi: 10.1016/0370-2693(84)90808-6
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1984GO08      Phys.Lett. 142B, 14 (1984)

P.B.Goldhoorn, G.J.Balster, H.J.Koeslag, R.J.de Meijer, R.H.Siemssen, Z.Sujkowski, H.W.Wilschut

The Importance of Sequential Ejectible Decay in the ¹⁴N + ⁵⁸Ni Reaction at 148 MeV

NUCLEAR REACTIONS ⁵⁸Ni(¹⁴N, αX), E=148 MeV; calculated (fragment)(α)-coin, σ(θ(α), fragment θ) vs relative energy for X=^6,7Li, ^7,9Be, ^10,11B, ^11,12,13C, ^13,14,15N; deduced primary fragment decay mechanism.

doi: 10.1016/0370-2693(84)91126-2
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1984VA13      Nucl.Phys. A422, 45 (1984)

A.M.Van Den Berg, N.Blasi, R.H.Siemssen, W.A.Sterrenburg, Z.Sujkowski

High-Resolution Study of the ^230,232Th(d, ⁶Li)^226,228Ra Reaction at E(d) = 45 MeV

NUCLEAR REACTIONS ^232,230Th(d, ⁶Li), E=45 MeV; measured σ(θ). ^228,226Ra deduced levels Sα, reduced widths, reduced hindrance factors. Finite-range DWBA. Enriched targets, magnetic spectrograph.

doi: 10.1016/0375-9474(84)90430-5
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1984VA14      Nucl.Phys. A422, 61 (1984)

A.M.Van Den Berg, R.Bijker, N.Blasi, M.Sambataro, R.H.Siemssen, W.A.Sterrenburg

Study of ^96,98,100Mo with the Ru(d, ⁶Li)Mo Reaction at E(d) = 45 MeV

NUCLEAR REACTIONS ^100,102,104Ru(d, ⁶Li), E=45 MeV; measured σ(E(⁶Li), θ). ^96,98,100Mo levels deduced Sα, J, π. DWBA analysis, interacting boson approximation calculations, shell model wave functions. Magnetic spectrograph, enriched targets.

doi: 10.1016/0375-9474(84)90431-7
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1984VA23      Nuovo Cim. 81A, 318 (1984)

A.M.Van Den Berg, R.H.Siemssen

Some Recent Results on α Pick-Up from (d, ⁶Li) Reactions

NUCLEAR REACTIONS ^232,230Th(d, ⁶Li), E=45 MeV; measured σ(θ), σ(E(⁶Li)). ^226,228Ra levels deduced α-decay reduced hindrance factors. Finite-range DWBA analysis.

doi: 10.1007/BF02724172
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1984VA31      Nucl.Phys. A429, 1 (1984); Erratum Nucl.Phys. A441, 757 (1985)

A.M.Van Den Berg, A.Saha, G.D.Jones, L.W.Put, R.H.Siemssen

Study of Even-A Zirconium and Strontium Isotopes with the (d, ⁶Li) Reaction

NUCLEAR REACTIONS ^90,92Zr, ^{92,94,96,98,100}Mo(d, ⁶Li), E=45 MeV; measured σ(E(⁶Li), θ). ^86,88Sr, ^{88,90,92,94,96}Zr levels deduced S(α), J, π. DWBA analysis, shell model wave functions. Enriched targets, magnetic spectograph.

doi: 10.1016/0375-9474(84)90147-7
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1984WI07      Phys.Lett. 138B, 43 (1984)

H.W.Wilschut, G.J.Balster, P.B.Goldhoorn, R.H.Siemssen, Z.Sujkowski

Angular Momentum Dependence of Incomplete Fusion Reactions

NUCLEAR REACTIONS ¹⁹⁷Au(¹⁴N, X), E=115, 168 MeV; measured (fragment)(K X-ray)-coin, γ-multiplicity; deduced incomplete fusion angular momentum dependence.

doi: 10.1016/0370-2693(84)91869-0
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1983SI13      Nucl.Phys. A405, 205 (1983)

R.H.Siemssen, C.C.Foster, W.W.Jacobs, W.P.Jones, D.W.Miller, M.Saber, F.Soga

Vector Analyzing Powers for Valence and Inner Shell Pickup in the ¹¹⁶Sn(d(pol), t)¹¹⁵Sn and ¹¹⁶Sn(d(pol), ³He)¹¹⁵In Reactions

NUCLEAR REACTIONS ¹¹⁶Sn(polarized d, t), (polarized d, ³He), E=50 MeV; measured σ(E, θ), A(E, θ). ¹¹⁵Sn deduced valence, deeply bound hole states. ¹¹⁵In levels deduced J, π. DWBA analysis. Enriched targets, vector polarized beams.

doi: 10.1016/0375-9474(83)90568-7
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1983VA11      Phys.Rev. C27, 2377 (1983)

A.M.van den Berg, N.Blasi, R.H.Siemssen, W.A.Sterrenburg

Coupled Channel Effects in the Ru(d, ⁶Li)Mo Reaction

NUCLEAR REACTIONS ^100,102,104Ru(d, ⁶Li), E=45 MeV; measured σ(θ); deduced optical model parameters. ^96,98,100Mo levels deduced strong, systematic anomalies. Enriched targets, magnetic spectrograph, DWBA, CCBA analyses.

doi: 10.1103/PhysRevC.27.2377
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1983VA18      Nucl.Phys. A403, 57 (1983)

A.M.Van Den Berg, N.Blasi, R.H.Siemssen, W.A.Sterrenburg

Investigation of Pairing Vibration States in ⁸⁸Sr and ⁹⁰Zr via the (d, ⁶Li) Reaction and Search for α-Vibration States

NUCLEAR REACTIONS ⁹²Zr, ⁹⁴Mo(d, ⁶Li), E=45 MeV; measured σ(E(⁶Li)), σ(θ). ⁸⁸Sr, ⁹⁰Zr levels deduced relative excitation strengths, nonvibrational character. Enriched targets, magnetic spectrograph. DWBA analysis.

doi: 10.1016/0375-9474(83)90187-2
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1983WI03      Phys.Lett. 123B, 173 (1983)

H.W.Wilschut, R.K.Bhowmik, P.B.Goldhoorn, J.F.W.Jansen, R.H.Siemssen, K.Siwek-Wilczynska, Z.Sujkowski, J.Wilczynski

Selection of Heavy Ion Reaction Channels via Particle K X-Ray Coincidences

NUCLEAR REACTIONS ¹⁹⁷Au(¹⁴N, α), (¹⁴N, ⁷Li), (¹⁴N, ⁹Be), (¹⁴N, ¹⁰Be), (¹⁴N, ¹⁰B), (¹⁴N, ¹¹B), (¹⁴N, ¹²B), (¹⁴N, ¹³C), (¹⁴N, ¹⁵N), E=140 MeV; measured E(X-ray), I(X-ray), (particle)(X-ray)-, (particle)(X-ray)(X-ray)-coin; deduced inclusive, exclusive σ(θ).

doi: 10.1016/0370-2693(83)90416-1
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1982BH05      Nucl.Phys. A390, 117 (1982)

R.K.Bhowmik, J.Van Driel, R.H.Siemssen, G.J.Balster, P.B.Goldhoorn, S.Gonggrijp, Y.Iwasaki, R.V.F.Janssens, H.Sakai, K.Siwek-Wilczynska, W.A.Sterrenburg, J.Wilczynski

Particle-Particle Correlation Studies for the System ¹⁴N + ¹⁵⁹Tb at 10 and 12 MeV/A

NUCLEAR REACTIONS ¹⁵⁹Tb(¹⁴N, αX), E=140, 168 MeV; measured αX-, Xp-, Xn-coin, αX(θ), Xp(θ), Xn(θ), σ(fragment θ, E).

doi: 10.1016/0375-9474(82)90608-X
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1982RI08      Phys.Lett. 118B, 287 (1982)

H.J.Riezebos, R.De Leo, P.B.Goldhoorn, M.N.Harakeh, L.W.Put, H.Sakai, R.H.Siemssen

Multipole Strength Distribution in ¹⁵⁶Gd from the (p, t) Reaction at E(p) = 40 MeV

NUCLEAR REACTIONS ¹⁵⁸Gd(p, t), E=40 MeV; measured σ(Et), σ(θ); deduced optical model parameters. ¹⁵⁶Gd levels deduced integrated spectroscopic factors, multipole strength distribution. DWBA analysis, dineutron cluster form factor.

doi: 10.1016/0370-2693(82)90186-1
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1982VA08      Nucl.Phys. A379, 239 (1982)

A.M.Van Den Berg, R.V.F.Janssens, G.T.Emery, A.Saha, R.H.Siemssen

First Excited 0⁺ States in the Germanium Isotopes Via the Se(d, ⁶Li) Reaction

NUCLEAR REACTIONS ^{74,76,78,80,82}Se(d, ⁶Li), E=45 MeV, measured σ(E(⁶Li), θ). ^{70,72,74,76,78}Ge levels deduced Sα, L, J, π. Magnetic spectrograph, enriched targets.

doi: 10.1016/0375-9474(82)90392-X
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1982WI02      Nucl.Phys. A373, 109 (1982)

J.Wilczynski, K.Siwek-Wilczynska, J.Van Driel, S.Gonggrijp, D.C.J.M.Hageman, R.V.F.Janssens, J.Lukasiak, R.H.Siemssen, S.Y.Van Der Werf

Binary l-Matched Reactions in ¹⁴N + ¹⁵⁹Tb Collisions

NUCLEAR REACTIONS ¹⁵⁹Tb(¹⁴N, X), E=140 MeV; measured γγ-coin, γ-multiplicity, production σ(θ) for ^4,6He, ^6,7Li, ^7,9,10Be, ^10,11,12B, ^11,12,13,14C, ^15,16O fragments; deduced reaction mechanism. Sum rule model, few-nucleon capture, complete, incomplete fusion.

doi: 10.1016/0375-9474(82)90183-X
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1981IW01      Phys.Rev. C23, 1477 (1981)

Y.Iwasaki, E.H.L.Aarts, M.N.Harakeh, R.H.Siemssen, S.Y.van der Werf

¹⁹⁴Pt(d, ³He)¹⁹³Ir Reaction: Spectroscopic factors and supersymmetry predictions

NUCLEAR REACTIONS ¹⁹⁴Pt(d, ³He), E=50 MeV; measured σ(θ). ¹⁹³Ir levels deduced L, S, supersymmetry model validation. DWBA analysis.

doi: 10.1103/PhysRevC.23.1477
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1981LE21      Nucl.Phys. A371, 111 (1981)

I.S.Lee, W.J.Jordan, J.V.Maher, R.Kamermans, J.W.Smits, R.H.Siemssen

Proton Hole States in the Shape Transitional Region via the Sm(d, ³He)Pm Reaction at E(d) = 50 MeV

NUCLEAR REACTIONS ^{148,150,152,154}Sm(d, ³He), E=50 MeV; measured σ(θ). ^{147,149,151,153}Pm deduced levels, J, π, L, S. Enriched targets, counter telescopes.

doi: 10.1016/0375-9474(81)90748-X
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1981SA21      Phys.Lett. 103B, 309 (1981)

H.Sakai, R.K.Bhowmik, K.van Dijk, A.G.Drentje, M.N.Harakeh, Y.Iwasaki, R.H.Siemssen, S.Y.van der Werf, A.van der Woude

Gamma-Decay of the Deeply-Bound Hole States Populated in the ¹⁰²Pd(³He, α)¹⁰¹Pd Reaction at 70 MeV

NUCLEAR REACTIONS ¹⁰²Pd(³He, α), E=70 MeV; measured αγ(θ), Eα. ¹⁰¹Pd deduced g_9/2 hole strength, δ(M1/E2) for 9/2⁺ to 7/2⁺ transition, B(E2). High purity Ge, NaI(Tl) detectors, QMG/2 magnetic spectrograph.

doi: 10.1016/0370-2693(81)90230-6
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1981SI07      Phys.Lett. 103B, 323 (1981)

R.H.Siemssen, W.P.Jones, W.W.Jacobs, C.C.Foster, D.W.Miller, M.Saber, F.Soga

On the 'Missing' Deep-Hole Strength in ¹¹⁵Sn

NUCLEAR REACTIONS ¹¹⁶Sn(d, t), E=50 MeV; measured σ(Et, θ). ¹¹⁵Sn deduced gross structure peaks, ΣC²S, L, 1g_9/2, 2p_1/2, 2p_3/2, 1f_5/2 subshell strength. Enriched target. DWBA calculations.

doi: 10.1016/0370-2693(81)90234-3
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1981VA04      Phys.Lett. 98B, 351 (1981)

J.Van Driel, S.Gonggrijp, R.V.F.Janssens, R.H.Siemssen, K.Siwek-Wilczynska, J.Wilczynski

Sequential Ejectile Decays and Uncorrelated Breakup Processes in the ¹⁴N + ¹⁵⁹Tb Reaction

NUCLEAR REACTIONS ¹⁵⁹Tb(¹⁴N, αX), E=112, 140, 168 MeV; measured σ(θα, fragment θ), αX-coin. ¹⁴N deduced relative importance of sequential decay, breakup processes.

doi: 10.1016/0370-2693(81)90923-0
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1981VE05      Nucl.Phys. A362, 189 (1981)

J.C.Vermeulen, A.G.Drentje, H.T.Fortune, L.W.Put, R.R.De Ruyter Van Steveninck, R.H.Siemssen, J.F.A.Van Hienen, H.Hasper

High-Resolution Study of Four-Nucleon Pickup Via the (d, ⁶Li) Reaction at Ed = 55 MeV on sd Shell Nuclei (I) . Even-A Nuclei

NUCLEAR REACTIONS ^24,26Mg, ²⁸Si(d, ⁶Li), E=55 MeV; measured σ(E(⁶Li), θ). ^20,22Ne, ²⁴Mg deduced levels, Sα, L, J, π. Magnetic spectrograph, enriched targets.

doi: 10.1016/0375-9474(81)90677-1
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO1821.

1980HA33      Nucl.Phys. A344, 15 (1980)

M.N.Harakeh, J. Van Popta, A.Saha, R.H.Siemssen

Strong Coupled-Channels Effects in the ⁹Be(α, t)¹⁰B Reaction

NUCLEAR REACTIONS ⁹Be(α, α'), (α, t), (α, ³He), E=65 MeV; measured σ(Eα, θ), σ(Et, θ), σ(E(³He), θ); deduced optical-model parameters; ⁹Be levels deduced β₂. ¹⁰B, ¹⁰Be levels deduced L, S. DWBA, coupled-channel analyses.

doi: 10.1016/0375-9474(80)90429-7
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1980OL02      Phys.Rev. C21, 254 (1980)

C.Olmer, D.F.Geesaman, B.Zeidman, S.Chakravarti, T.-S.H.Lee, R.L.Boudrie, R.H.Siemssen, J.F.Amann, C.L.Morris, H.A.Thiessen, G.R.Burleson, M.J.Devereux, R.E.Segel, L.W.Swenson

Elastic and Inelastic Scattering of 162 MeV Pions by ²⁸Si, ⁵⁸Ni, and ²⁰⁸Pb

NUCLEAR REACTIONS ²⁸Si, ⁵⁸Ni, ²⁰⁸Pb(π⁺, π⁺'), (π^-, π^-'), E=162 MeV; measured σ(θ). Optical model, DWIA collective model analyses.

doi: 10.1103/PhysRevC.21.254
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1980SC23      Nucl.Phys. A348, 301 (1980)

O.Scholten, M.N.Harakeh, J.Van Der Plicht, L.W.Put, R.H.Siemssen, S.Y.Van Der Werf, M.Sekiguchi

Neutron Pickup Reactions on the Even Palladium Isotopes and the Deeply Bound Hole-State Excitation

NUCLEAR REACTIONS ^{102,104,106,108,110}Pd(d, t), E=50 MeV; measured σ(Et, θ). ^101,103Pd levels deduced L, J, π, C²S. ^{102,104,106,108,110}Pd; deduced deeply bound hole states, spectroscopic strength distributions. DWBA analysis. ^{102,104,106,108,110}Pd(³He, α), E=70 MeV; measured σ(Eα); deduced deeply bound hole states.

doi: 10.1016/0375-9474(80)90339-5
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1980WI04      Nucl.Phys. A334, 317 (1980)

J.Wilczynski, K.van der Borg, H.T.Fortune, J.van Popta, R.H.Siemssen, K.Siwek-Wilczynska, S.Y.van der Werf, A.van der Woude

Symmetric Fission of ²⁴Mg Induced by Inelastic Scattering of 120 MeV α-Particles

NUCLEAR REACTIONS ²⁴Mg(α, α¹²C), E=120 MeV; measured σ(Eα, θα, θ(¹²C)), α¹²C-coin, σ(Eα, θα). ²⁴Mg resonances deduced lower, upper limits of < Γ(¹²C)/Γ > . Enriched target. Solid-state particle telescopes, ionization chamber.

doi: 10.1016/0375-9474(80)90071-8
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1980WI10      Phys.Rev.Lett. 45, 606 (1980)

J.Wilczynski, K.Siwek-Wilczynska, J.van Driel, S.Gonggrijp, D.C.J.M.Hageman, R.V.F.Janssens, J.Lukasiak, R.H.Siemssen

Incomplete-Fusion Reactions in the ¹⁴N+¹⁵⁹Tb System and a Sum-Rule Model for Fusion and Incomplete-Fusion Reactions

NUCLEAR REACTIONS ¹⁵⁹Tb(¹⁴N, α), (¹⁴N, ⁶He), (¹⁴N, ⁶Li), (¹⁴N, ⁷Li), (¹⁴N, ⁷Be), (¹⁴N, ⁸Be), (¹⁴N, ⁹Be), (¹⁴N, ¹⁰Be), (¹⁴N, ¹⁰B), (¹⁴N, ¹¹B), (¹⁴N, ¹²B), (¹⁴N, ¹¹C), (¹⁴N, ¹²C), (¹⁴N, ¹³C), E=140 MeV; measured (particle)γ-coin; deduced absolute σ. Sum rule model, complete, incomplete fusion reactions.

doi: 10.1103/PhysRevLett.45.606
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1979FO13      Phys.Rev. C20, 648 (1979)

H.T.Fortune, A.Richter, R.H.Siemssen, J.L.Yntema

¹⁶O Scattering from the Even-A Mg and Si Isotopes

NUCLEAR REACTIONS ^24,26Mg, ^28,30Si(¹⁶O, ¹⁶O), E(cm)=26-35 MeV; measured σ(θ). Optical model analysis.

doi: 10.1103/PhysRevC.20.648
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1979SA12      Phys.Lett. 82B, 208 (1979)

A.Saha, G.D.Jones, L.W.Put, R.H.Siemssen

Unusually Strong Excitation of the 1.59 MeV 0⁺ State in the ¹⁰⁰Mo(d, ⁶Li)⁹⁶Zr Reaction

NUCLEAR REACTIONS ^94,96,98,100Mo(d, ⁶Li), E=45 MeV; measured σ(E(⁶Li)), σ(θ). ^90,92,94,96Zr deduced change in proton configuration with neutron number. DWBA analysis. Enriched targets.

doi: 10.1016/0370-2693(79)90737-8
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1979SI09      Phys.Rev.Lett. 42, 1599 (1979)

K.Siwek-Wilczynska, E.H.du Marchie van Voorthuysen, J.van Popta, R.H.Siemssen, J.Wilczynski

Incomplete Fusion in ¹²C + ¹⁶⁰Gd Collisions Interpreted in Terms of a Generalized Concept of Critical Angular Momentum

NUCLEAR REACTIONS ¹⁶⁰Gd(¹²C, α), (¹²C, 2α), E=7.5-16.7 MeV/nucleon; measured αγ-coin, σ(E); deduced reaction mechanism, critical angular momentum.

doi: 10.1103/PhysRevLett.42.1599
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1979SI15      Nucl.Phys. A330, 150 (1979)

K.Siwek-Wilczynska, E.H.du Marchie van Voorthuysen, J.van Popta, R.H.Siemssen, J.Wilczynski

Incomplete Fusion in ¹²C + ¹⁶⁰Gd Collisions

NUCLEAR REACTIONS ¹⁶⁰Gd(¹²C, xnyαγ), E=90, 120, 160, 200 MeV; inclusive σ(E, Eα, θα) for N=0-8, Y=1-2, αγ-coin; critical angular momenta, excitation functions. Enriched target, ae-E telescopes, Ge(Li) detectors. Incomplete fusion model.

doi: 10.1016/0375-9474(79)90542-6
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1979SM03      Nucl.Phys. A319, 29 (1979)

J.W.Smits, R.H.Siemssen, S.Y.van der Werf, A.van der Woude

The ^{58, 60, 62, 64}Ni(p, α)^{55, 57, 59, 61}Co Reactions and Their Description by the Semi-Microscopic Model for Three-Nucleon Transfer

NUCLEAR REACTIONS ^58,60,62,64Ni(p, α), E=30 MeV; measured σ(θ). ^55,57,59,61Co deduced levels, L. Enriched targets. Solid state detectors.

doi: 10.1016/0375-9474(79)90169-6
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO0153.

Note: The following list of authors and aliases matches the search parameter R.Siemssen: , R.H.SIEMSSEN