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NSR database version of May 20, 2024.

Search: Author = A.L.Keksis

Found 23 matches.

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2016DE30      Phys.Rev. C 94, 054612 (2016)

D.Denis-Petit, O.Roig, V.Meot, B.Morillon, P.Romain, M.Jandel, T.Kawano, D.J.Vieira, E.M.Bond, T.A.Bredeweg, A.J.Couture, R.C.Haight, A.L.Keksis, R.S.Rundberg, J.L.Ullmann

Isomeric ratio measurements for the radiative neutron capture 176Lu(n, γ) at the LANL DANCE facility

NUCLEAR REACTIONS 176Lu(n, γ), E=8.5 eV-100 keV; measured Eγ, Iγ, delayed γ spectra using DANCE array at the LANSCE-LANL facility; deduced isomeric ratios to the 5/2-, 761.7 keV and 15/2+, 1356.9 keV nanosecond isomers in 177Lu. Comparison with TALYS calculations using different models for photon strength functions, level densities, and optical potentials.

doi: 10.1103/PhysRevC.94.054612
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14455.


2016RO08      Phys.Rev. C 93, 034602 (2016)

O.Roig, M.Jandel, V.Meot, E.M.Bond, T.A.Bredeweg, A.J.Couture, R.C.Haight, A.L.Keksis, R.S.Rundberg, J.L.Ullmann, D.J.Vieira

Radiative neutron capture cross sections on 176Lu at DANCE

NUCLEAR REACTIONS 176Lu(n, γ), E=0.02-100 keV; measured Eγ, Iγ, neutron flux, σ(E) using 4π BaF2 array DANCE at LANSCE-LANL; deduced radiative capture yield as function of neutron energy, resonances from 0.138-906 eV, J, Γγ and Γn versus neutron energy, resonance parameters using R-matrix analysis with SAMMY-7.0 code, Maxwellian averaged cross sections (MACS) in a stellar plasma for thermal energies between 5-100 keV. Comparison with theoretical calculations and evaluations in Atlas of Neutron resonances (2006), ENSDF/B-VII.1, JEFF-3.2, BRC and KADoNiS databases, and with previous experimental data.

doi: 10.1103/PhysRevC.93.034602
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14244. Data from this article have been entered in the XUNDL database. For more information, click here.


2014KR08      Nucl.Data Sheets 119, 158 (2014)

J.Kroll, U.Agvaanluvsan, B.Baramsai, J.A.Becker, F.Becvar, T.A.Bredeweg, A.Chyzh, A.Couture, D.Dashdorj, R.C.Haight, M.Jandel, A.L.Keksis, M.Krticka, G.E.Mitchell, J.M.O'Donnell, W.Parker, R.S.Rundberg, J.L.Ullmann, S.Valenta, D.J.Vieira, C.L.Walker, J.B.Wilhelmy, J.M.Wouters, C.Y.Wu

Systematics of Scissors Mode in Gd Nuclei from Experiments with the DANCE Detector

NUCLEAR REACTIONS 152,154,155,156,157,158Gd(n, γ), E=subthermal-1 MeV; measured Eγ, Iγ using ToF LANSCE/DANCE array (BaF2); calculated γ emission, γ cascades using MSC code DICEBOX with fitted parameters and all models of RIPL-3; deduced M1 scissors mode vibrations; calculated scissors mode B(M1) vs deformation for (n, γ), (γ, γ') and 3He-induced reactions data.

doi: 10.1016/j.nds.2014.08.044
Citations: PlumX Metrics


2014ST04      J.Phys.(London) G41, 025108 (2014)

B.C.Stein, A.Bonasera, G.A.Souliotis, H.Zheng, P.J.Cammarata, A.J.Echeverria, L.Heilborn, A.L.Keksis, Z.Kohley, J.Mabiala, P.Marini, L.W.May, A.B.McIntosh, C.Richers, D.V.Shetty, S.N.Soisson, R.Tripathi, S.Wuenschel, S.J.Yennello

Quantum suppression of fluctuations and temperatures of reconstructed A ∼ 30 quasi-projectiles

NUCLEAR REACTIONS 112Sn(32S, X)1H/3H/3He, E=45 MeV/nucleon; measured reaction products, Ep, Ip; deduced fragment multiplicities, proton temperature, energy density, supression of multiplicity fluctuations. Comparison with available data.

doi: 10.1088/0954-3899/41/2/025108
Citations: PlumX Metrics


2013BA15      Phys.Rev. C 87, 044609 (2013)

B.Baramsai, J.Kroll, G.E.Mitchell, U.Agvaanluvsan, F.Becvar, T.A.Bredeweg, A.Chyzh, A.Couture, D.Dashdorj, R.C.Haight, M.Jandel, A.L.Keksis, M.Krticka, J.M.O'Donnell, R.S.Rundberg, J.L.Ullmann, D.J.Vieira, C.L.Walker

Photon strength functions of 156Gd from radiative capture of resonance neutrons

NUCLEAR REACTIONS 155Gd(n, γ), E=7.8, 21.0 eV; measured Eγ, Iγ, sum energy spectra, cluster multiplicity of γ cascades using DANCE γ-ray calorimeter at LANSCE facility; deduced spectra of multistep γ cascades (MSCs) and those of gated MSCs, E1 and M1 photon strength functions, scissors mode. DICEBOX algorithm. Validity of various photon strength functions (PSF), and nuclear level density (NLD) models Comparison with previous experimental studies, and with theoretical calculations.

doi: 10.1103/PhysRevC.87.044609
Citations: PlumX Metrics


2013KR11      Phys.Rev. C 88, 034317 (2013)

J.Kroll, B.Baramsai, G.E.Mitchell, U.Agvaanluvsan, F.Becvar, T.A.Bredeweg, A.Chyzh, A.Couture, D.Dashdorj, R.C.Haight, M.Jandel, A.L.Keksis, M.Krticka, J.M.O'Donnell, W.Parker, R.S.Rundberg, J.L.Ullmann, S.Valenta, D.J.Vieira, C.Walker, C.Y.Wu

Strength of the scissors mode in odd-mass Gd isotopes from the radiative capture of resonance neutrons

NUCLEAR REACTIONS 152,154,156,158Gd(n, γ), E<1 MeV white neutron spectrum; measured multistep cascade (MSC) γ spectra for different multiplicities and several resolved s-wave resonances using DANCE array at LANSCE, LANL facility; deduced E1 and M1 photon strength functions, level density. GEANT4-based simulations. Comparison with several model calculations of photon strength functions (PSF) and nuclear level densities (NLD) for deformed nuclei, and with experimental data from other reactions. Discussed scissors mode in odd-A Gd isotopes from summed reduced M1 strengths. Evidence of odd-even effect in strength of scissors mode.

doi: 10.1103/PhysRevC.88.034317
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2012BA07      Phys.Rev. C 85, 024622 (2012)

B.Baramsai, G.E.Mitchell, U.Agvaanluvsan, F.Becvar, T.A.Bredeweg, A.Chyzh, A.Couture, D.Dashdorj, R.C.Haight, M.Jandel, A.L.Keksis, M.Krticka, J.M.O'Donnell, R.S.Rundberg, J.L.Ullmann, D.J.Vieira, C.L.Walker

Neutron resonance parameters in 155Gd measured with the DANCE γ-ray calorimeter array

NUCLEAR REACTIONS 155Gd(n, γ), E=1.36-185 eV; measured neutron spectra by time-of-flight, E(n), I(n), Eγ, sum-energy spectra, average γ-ray multiplicity of s-wave resonances, cross sections using DANCE calorimeter at LANSC. 156Gd; deduced resonances, spins by various methods, resonance parameters, s-wave level density, normalized yields for J=1 and J=2 resonances, neutron and radiative width, Sammy fit of experimental cross sections. Comparison with previous studies, and ENDF/B-VII.0, JENDL-4.0, JEFF-3.1, ROSFOND-2010 libraries.

doi: 10.1103/PhysRevC.85.024622
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14318. Data from this article have been entered in the XUNDL database. For more information, click here.


2012SO16      J.Phys.(London) G39, 115104 (2012)

S.N.Soisson, A.Botvina, G.A.Souliotis, B.C.Stein, L.Heilborn, A.L.Keksis, Z.Kohley, L.W.May, D.V.Shetty, S.Wuenschel, S.J.Yennello

Multifragmentation of reconstructed quasi-projectiles in the mass region A ∼ 30

NUCLEAR REACTIONS 112Sn(32S, X), E=45 MeV/nucleon; analyzed available data; calculated charge and mass distribution of fragments, N/Z, yield ratios. Statistical multifragmentation model, comparison with available data.

doi: 10.1088/0954-3899/39/11/115104
Citations: PlumX Metrics


2011UL01      J.Korean Phys.Soc. 59, 1406s (2011)

J.L.Ullmann, A.J.Couture, A.L.Keksis, D.J.Vieira, J.M.O'Donnell, J.M.Wouters, M.Jandel, R.C.Haight, R.S.Rundberg, T.A.Bredeweg, T.Kawano, C.Y.Wu, J.A.Becker, A.Chyzh, B.Baramsai, G.E.Mitchell, M.Krticka

Measurement of the 238U Neutron-capture Cross Section and Gamma-emission Spectra from 10 eV to 100 keV Using the DANCE Detector at LANSCE

NUCLEAR REACTIONS 238U(n, γ), E=10 eV-100 keV; measured Eγ, Iγ, γγ-coin using DANCE at LANSCE; deduced σ, γ multiplicity, 36 eV resonance σ(Eγ); calculated γ multiplicity, σ(Eγ) using DICEBOX code.

doi: 10.3938/jkps.59.1406
Citations: PlumX Metrics


2010CH41      Nucl.Data Sheets 111, 2923 (2010)

M.B.Chadwick, T.Kawano, D.W.Barr, M.R.Mac Innes, A.C.Kahler, T.Graves, H.Selby, C.J.Burns, W.C.Inkret, A.L.Keksis, J.P.Lestone, A.J.Sierk, P.Talou

Fission Product Yields from Fission Spectrum n+239Pu for ENDF/B-VII.1

NUCLEAR REACTIONS 239Pu(n, F)99Mo/95Zr/140Ba/144Ce/147Nd, E=0.2-2 MeV; measured fission products; deduced fission product yields and its energy dependence. Comparison with ENDF/B-VII.0 library, LANL-ILRR measurements.

doi: 10.1016/j.nds.2010.11.003
Citations: PlumX Metrics


2010GA13      Nucl.Phys. A837, 145 (2010)

S.Galanopoulos, G.A.Souliotis, A.L.Keksis, M.Veselsky, Z.Kohley, L.W.May, D.V.Shetty, S.N.Soisson, B.C.Stein, S.Wuenschel, S.J.Yennello

Isoscaling of mass A ≈ 40 reconstructed quasiprojectiles from collisions in the Fermi energy regime

NUCLEAR REACTIONS 112,124Sn(40Ar, X), (40Ca, X), E=45 MeV/nucleon; measured light fragment yields, energy spectra, (fragment)(fragment)-coin using FAUST array; analyzed isoscaling behaviour versus neutron number and excitation energy, including correction for neutron loss.

doi: 10.1016/j.nuclphysa.2010.01.248
Citations: PlumX Metrics


2010KE03      Phys.Rev. C 81, 054602 (2010)

A.L.Keksis, L.W.May, G.A.Souliotis, M.Veselsky, S.Galanopoulos, Z.Kohley, D.V.Shetty, S.N.Soisson, B.C.Stein, R.Tripathi, S.Wuenschel, S.J.Yennello, B.A.Li

Experimental studies of N/Z equilibration in peripheral collisions using fragment yield ratios

NUCLEAR REACTIONS 112Sn, 124Sn(40Ca, X), 112Sn, 124Sn(48Ca, X), E=32 MeV; measured fragment spectra; deduced quasiprojectile N/Z ratio. Comparison with deep-inelastic transfer (DIT) code, statistical multifragmentation model (SMM), and isospin-dependent Boltzmann-Uehling-Uhlenbeck (IBUU) microscopic transport model.

doi: 10.1103/PhysRevC.81.054602
Citations: PlumX Metrics


2010SE15      Nucl.Data Sheets 111, 2891 (2010)

H.D.Selby, M.R.Mac Innes, D.W.Barr, A.L.Keksis, R.A.Meade, C.J.Burns, M.B.Chadwick, T.C.Wallstrom

Fission Product Data Measured at Los Alamos for Fission Spectrum and Thermal Neutrons on 239Pu, 235U, 238U

NUCLEAR REACTIONS 235,238U, 239Pu(n, F)99Mo/95Zr/137Cs/140Ba/141,143Ce/147Nd, E=0.4-1.9 MeV; measured fission products; deduced fission product yields. Comparison with ENDF/B-VII.0 library, BIG TEN critical assembly.

doi: 10.1016/j.nds.2010.11.002
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14537.


2010VE02      Nucl.Phys. A837, 163 (2010)

M.Veselsky, G.A.Souliotis, A.L.Keksis, M.Jandel, D.V.Shetty, S.J.Yennello, K.Wang, Y.G.Ma

Statistical and dynamical aspects in the decay of hot neutron-rich nuclei

NUCLEAR REACTIONS 27Al(40Ca, X), (48Ca, X), E=45 MeV/nucleon; measured projectile-like fragment charge and mass distributions, light-particle velocity distributions and composite system excitation energies for incomplete fusion using FAUST array; deduced thermodynamical properties, isoscaling, effect of missing neutrons.

doi: 10.1016/j.nuclphysa.2010.02.013
Citations: PlumX Metrics


2010VE05      Int.J.Mod.Phys. E19, 1559 (2010)

M.Veselsky, G.A.Souliotis, A.L.Keksis, D.V.Shetty, M.Jandel, S.J.Yennello, K.Wang, Y.G.Ma

Statistical and dynamical aspects in the decay of hot neutron-rich nuclei

doi: 10.1142/S0218301310015965
Citations: PlumX Metrics


2009SO05      Nucl.Instrum.Methods Phys.Res. B266, 4692 (2009)

G.A.Souliotis, B.Stein, M.Veselsky, S.Galanopoulos, A.L.Keksis, Z.Kohley, D.V.Shetty, S.N.Soisson, S.Wuenschel, S.J.Yennello

Neutron-rich rare isotope production in the Fermi energy domain and application to the Texas A and M radioactive beam upgrade

doi: 10.1016/j.nimb.2008.05.118
Citations: PlumX Metrics


2007SO02      Phys.Rev. C 75, 011601 (2007)

G.A.Souliotis, A.S.Botvina, D.V.Shetty, A.L.Keksis, M.Jandel, M.Veselsky, S.J.Yennello

Tracing the evolution of the symmetry energy of hot nuclear fragments from the compound nucleus towards multifragmentation

NUCLEAR REACTIONS 64Ni(64Ni, X), 64Ni, 124Sn, 208Pb(86Kr, X), E=25 MeV/nucleon; analyzed fragments isotopic yields, mass distributions; deduced symmetry energy features.

doi: 10.1103/PhysRevC.75.011601
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1519.


2007SO12      Nucl.Instrum.Methods Phys.Res. B261, 996 (2007)

G.A.Souliotis, A.S.Botvina, D.V.Shetty, A.L.Keksis, M.Jandel, M.Veselsky, S.J.Yennello

Properties of hot nuclear fragments formed in multifragmentation and their astrophysical implications

NUCLEAR REACTIONS 64Ni, 124Sn, 208Pb(86Kr, X), 64Ni(64Ni, X), E=25 MeV/nucleon; measured fragment energies and time of flight. Deduced fragmentation cross sections.

doi: 10.1016/j.nimb.2007.04.185
Citations: PlumX Metrics


2007SO19      Nucl.Instrum.Methods Phys.Res. B261, 1094 (2007)

G.A.Souliotis, A.L.Keksis, B.C.Stein, M.Veselsky, M.Jandel, D.V.Shetty, S.N.Soisson, S.Wuenschel, S.J.Yennello

Rare isotope production in the Fermi energy regime and application to the Texas A

doi: 10.1016/j.nimb.2007.04.184
Citations: PlumX Metrics


2006IG02      Phys.Rev. C 74, 024605 (2006)

J.Iglio, D.V.Shetty, S.J.Yennello, G.A.Souliotis, M.Jandel, A.L.Keksis, S.N.Soisson, B.C.Stein, S.Wuenschel, A.S.Botvina

Symmetry energy and the isoscaling properties of the fragments produced in 40Ar, 40Ca + 58Fe, 58Ni reactions at 25, 33, 45, and 53 MeV/nucleon

NUCLEAR REACTIONS 58Ni, 58Fe(40Ar, X), (40Ca, X), E=25, 33, 45, 53 MeV/nucleon; measured fragments isotopic yields; deduced symmetry energies, isoscaling properties. Statistical multifragmentation model.

doi: 10.1103/PhysRevC.74.024605
Citations: PlumX Metrics


2006JA20      Phys.Rev. C 74, 054608 (2006)

M.Jandel, S.Wuenschel, D.V.Shetty, G.A.Souliotis, A.L.Keksis, S.J.Yennello, M.Veselsky

Signatures of critical behavior in the multifragmentation of nuclei with charge Z = 12-15 and the N/Z dependence

NUCLEAR REACTIONS 112,124Sn(28Si, X), E=30, 50 MeV/nucleon; measured projectile-like fragments charge and mass distributions, excitation energies; deduced power-law parameters.

doi: 10.1103/PhysRevC.74.054608
Citations: PlumX Metrics


2006TH11      Phys.Rev. C 74, 051602 (2006)

D.Theriault, J.Gauthier, F.Grenier, F.Moisan, C.St-Pierre, R.Roy, B.Davin, S.Hudan, T.Paduszynski, R.T.de Souza, E.Bell, J.Garey, J.Iglio, A.L.Keksis, S.Parketon, C.Richers, D.V.Shetty, S.N.Soisson, G.A.Souliotis, B.C.Stein, S.J.Yennello

Neutron-to-proton ratios of quasiprojectile and midrapidity emission in the 64Zn + 64Zn reaction at 45 MeV/nucleon

NUCLEAR REACTIONS 64Zn(64Zn, X), E=45 MeV/nucleon; measured charged particle and neutron spectra, σ(Eθ); deduced rapidity dependence of neutron-to-proton ratios, related features.

doi: 10.1103/PhysRevC.74.051602
Citations: PlumX Metrics


2005PA77      Nucl.Instrum.Methods Phys.Res. A547, 464 (2005)

T.Paduszynski, P.Sprunger, R.T.de Souza, S.Hudan, A.Alexander, B.Davin, G.Fleener, A.Mcintosh, C.Metelko, R.Moore, N.Peters, J.Poehlman, J.Gauthier, F.Grenier, R.Roy, D.Theriault, E.Bell, J.Garey, J.Iglio, A.L.Keksis, S.Parketon, C.Richers, D.V.Shetty, S.N.Soisson, G.A.Souliotis, B.Stein, S.J.Yennello

Resolving multiple particles in a highly segmented silicon array

NUCLEAR REACTIONS 64Zn(64Zn, X), E = 45 MeV/nucleon; measured charge particle multiplicity distributions.

doi: 10.1016/j.nima.2005.04.011
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