NSR Query Results
Output year order : Descending NSR database version of April 11, 2024. Search: Author = H.Weller Found 202 matches. Showing 1 to 100. [Next]2022HO01 J.Phys.(London) G49, 010502 (2022) C.R.Howell, M.W.Ahmed, A.Afanasev, D.Alesini, J.R.M.Annand, A.Aprahamian, D.L.Balabanski, S.V.Benson, A.Bernstein, C.R.Brune, J.Byrd, B.E.Carlsten, A.E.Champagne, S.Chattopadhyay, D.Davis, E.J.Downie, J.M.Durham, G.Feldman, H.Gao, C.G.R.Geddes, H.W.Griesshammer, R.Hajima, H.Hao, D.Hornidge, J.Isaak, R.V.F.Janssens, D.P.Kendellen, M.Kovash, P.P.Martel, U.-G.Meissner, R.Miskimen, B.Pasquini, D.R.Phillips, N.Pietralla, D.Savran, M.R.Schindler, M.H.Sikora, W.M.Snow, R.P.Springer, C.Sun, C.Tang, B.Tiburzi, A.P.Tonchev, W.Tornow, C.A.Ur, D.Wang, H.R.Weller, V.Werner, Y.K.Wu, J.Yan, Z.Zhao, A.Zilges, F.Z.Zomer International workshop on next generation gamma-ray source
doi: 10.1088/1361-6471/ac2827
2022LI18 Phys.Rev.Lett. 128, 132502 (2022) X.Li, M.W.Ahmed, A.Banu, C.Bartram, B.Crowe, E.J.Downie, M.Emamian, G.Feldman, H.Gao, D.Godagama, H.W.Griesshammer, C.R.Howell, H.J.Karwowski, D.P.Kendellen, M.A.Kovash, K.K.H.Leung, D.M.Markoff, J.A.McGovern, S.Mikhailov, R.E.Pywell, M.H.Sikora, J.A.Silano, R.S.Sosa, M.C.Spraker, G.Swift, P.Wallace, H.R.Weller, C.S.Whisnant, Y.K.Wu, Z.W.Zhao Proton Compton Scattering from Linearly Polarized Gamma Rays NUCLEAR REACTIONS 1H(polarized γ, γ'), E=83.4 MeV; measured reaction products, Eγ, Iγ; deduced σ(θ), electromagnetic dipole polarizabilities of the proton. The High Intensity Gamma-Ray Source facility at the Triangle Universities Nuclear Laboratory.
doi: 10.1103/PhysRevLett.128.132502
2021LA03 Phys.Rev. C 103, 034311 (2021) G.Laskaris, W.Ji, X.Yan, J.Zhou, W.R.Zimmerman, M.W.Ahmed, T.Averett, A.Deltuva, A.C.Fonseca, H.Gao, J.Golak, A.Kafkarkou, H.J.Karwowski, B.Lalremruata, J.Manfredi, J.M.Mueller, P.U.Sauer, R.Skibinski, A.P.Smith, M.B.Tsang, H.R.Weller, H.Witala, Y.K.Wu, Z.W.Zhao First measurement of the asymmetry and the Gerasimov-Drell-Hearn integrand from the 3He((pol)(γ(pol), p)2H reaction at an incident photon energy of 29 MeV NUCLEAR REACTIONS 3He(polarized γ, p)2H, E=29 MeV; measured Ep, Ip, p(θ), time-of-flight, spin-dependent asymmetry and total σ using a circularly polarized, monoenergetic γ-ray beam and a longitudinally polarized 3He target, and an array of depleted silicon surface barrier detectors at the High Intensity γ-ray Source (HIγS) facility at TUNL; deduced contribution from the two-body photo-disintegration to the 3He Gerasimov-Drell-Hearn (GDH) integrands, and compared with the state-of-the art three-nucleon system calculations.
doi: 10.1103/PhysRevC.103.034311
2020LI10 Phys.Rev. C 101, 034618 (2020) X.Li, M.W.Ahmed, A.Banu, C.Bartram, B.Crowe, E.J.Downie, M.Emamian, G.Feldman, H.Gao, D.Godagama, H.W.Griesshammer, C.R.Howell, H.J.Karwowski, D.P.Kendellen, M.A.Kovash, K.K.H.Leung, D.Markoff, S.Mikhailov, R.E.Pywell, M.H.Sikora, J.A.Silano, R.S.Sosa, M.C.Spraker, G.Swift, P.Wallace, H.R.Weller, C.S.Whisnant, Y.K.Wu, Z.W.Zhao Compton scattering from 4He at the TUNL HIγS facility NUCLEAR REACTIONS 4He(polarized γ, γ), E=81.3 MeV, 100% circularly and linearly polarized γ-ray beam via Compton backscattering from HiγS at TUNL; measured Compton scattered photons at different angles, time-of-flight spectra using an array of large NaI(Tl) detectors; deduced differential σ(θ). Comparison with previous experimental data from Lund at Eγ=87 MeV.
doi: 10.1103/PhysRevC.101.034618
2017SI26 Phys.Rev. C 96, 055209 (2017) M.H.Sikora, M.W.Ahmed, A.Banu, C.Bartram, B.Crowe, E.J.Downie, G.Feldman, H.Gao, H.W.Griesshammer, H.Hao, C.R.Howell, H.J.Karwowski, D.P.Kendellen, M.A.Kovash, X.Li, D.M.Markoff, S.Mikhailov, V.Popov, R.E.Pywell, J.A.Silano, M.C.Spraker, P.Wallace, H.R.Weller, C.S.Whisnant, Y.K.Wu, W.Xiong, X.Yan, Z.W.Zhao Compton scattering from 4He at 61 MeV NUCLEAR REACTIONS 4He(γ, γ'), E=61 MeV; measured Eγ, Iγ, Compton scattering differential σ(θ) using NaI(Tl) detectors and liquid 4He target at HIγS facility at TUNL. Data interpreted using phenomenological model sensitive to the dipole isoscalar electromagnetic polarizabilities of the nucleon. Comparison with previous experimental data. Benchmarks for future calculations from effective field theories and lattice quantum chromodynamics.
doi: 10.1103/PhysRevC.96.055209
2016LO04 Phys.Lett. B 756, 72 (2016) B.Loher, D.Savran, T.Aumann, J.Beller, M.Bhike, N.Cooper, V.Derya, M.Duchene, J.Endres, A.Hennig, P.Humby, J.Isaak, J.H.Kelley, M.Knorzer, N.Pietralla, V.Yu.Ponomarev, C.Romig, M.Scheck, H.Scheit, J.Silva, A.P.Tonchev, W.Tornow, F.Wamers, H.Weller, V.Werner, A.Zilges The decay pattern of the Pygmy Dipole Resonance of 140Ce NUCLEAR REACTIONS 140Ce(γ, γ'), (γ, γ), E=6.5 MeV; measured reaction products, Eγ, Iγ; deduced elastic scattering σ, average branching ratio to excited states for 140Ce, Pygmy Dipole Resonance (PDR) couple to the ground state as well as to low-lying excited states, PDR mixing. Comparison with nuclear model calculations.
doi: 10.1016/j.physletb.2016.02.042
2015BE02 Phys.Lett. B 741, 128 (2015) J.Beller, C.Stumpf, M.Scheck, N.Pietralla, D.Deleanu, D.M.Filipescu, T.Glodariu, W.Haxton, A.Idini, J.H.Kelley, E.Kwan, G.Martinez-Pinedo, R.Raut, C.Romig, R.Roth, G.Rusev, D.Savran, A.P.Tonchev, W.Tornow, J.Wagner, H.R.Weller, N.-V.Zamfir, M.Zweidinger Separation of the 1+/1- parity doublet in 20Ne NUCLEAR REACTIONS 20Ne, 28Si(polarized γ, γ'), E=11.26 MeV; measured reaction products, Eγ, Iγ; deduced the energy difference of the parity doublet, the ratio of their integrated σ. Comparison with shell model calculations.
doi: 10.1016/j.physletb.2014.12.018
2015FI10 Eur.Phys.J. A 51, 185 (2015) D.Filipescu, A.Anzalone, D.L.Balabanski, S.S.Belyshev, F.Camera, M.La Cognata, P.Constantin, L.Csige, P.V.Cuong, M.Cwiok, V.Derya, W.Dominik, M.Gai, S.Gales, I.Gheorghe, B.S.Ishkhanov, A.Krasznahorkay, A.A.Kuznetsov, C.Mazzocchi, V.N.Orlin, N.Pietralla, M.Sin, C.Spitaleri, K.A.Stopani, O.Tesileanu, C.A.Ur, I.Ursu, H.Utsunomiya, V.V.Varlamov, H.R.Weller, N.V.Zamfir, A.Zilges Perspectives for photonuclear research at the Extreme Light Infrastructure - Nuclear Physics (ELI-NP) facility
doi: 10.1140/epja/i2015-15185-9
2015LA22 Phys.Lett. B 750, 547 (2015) G.Laskaris, X.Yan, J.M.Mueller, W.R.Zimmerman, W.Xiong, M.W.Ahmed, T.Averett, P.-H.Chu, A.Deltuva, C.Flower, A.C.Fonseca, H.Gao, J.Golak, J.N.Heideman, H.J.Karwowski, M.Meziane, P.U.Sauer, R.Skibinski, I.I.Strakovsky, H.R.Weller, H.Witala, Y.K.Wu Measurement of the doubly-polarized 3He(pol)(γ(pol), n)pp reaction at 16.5 MeV and its implications for the GDH sum rule NUCLEAR REACTIONS 3He(polarized γ, n), E=12.8, 14.7 MeV; measured reaction products, Eγ, Iγ, En, In; deduced σ(θ, E), σ, contribution from the three-body channel to the Gerasimov-Drell-Hearn (GDH) integrand. Comparison with available data, Monte Carlo simulations using GEANT4.
doi: 10.1016/j.physletb.2015.09.065
2015MU09 Phys.Rev. C 92, 034604 (2015) J.M.Mueller, M.W.Ahmed, B.J.Davis, H.J.Karwowski, D.M.Markoff, L.S.Myers, M.C.Spraker, S.Stave, J.R.Tompkins, H.R.Weller, W.R.Zimmerman Polarization asymmetries in the 9Be (γ, n0)reaction NUCLEAR REACTIONS 9Be(polarized γ, n), E=5.5-15.5 MeV from High Intensity γ-ray Source (HIγS) at Duke University and TUNL; measure neutron spectra, time-of-flight spectrum, neutron yields parallel and perpendicular to the plane of beam polarization, polarization asymmetries using nearly 100% linearly polarized and monoenergetic γ-ray beam. Comparison with direct capture calculations using only E1 contributions. Relevance to new method of assaying special nuclear materials (SNM).
doi: 10.1103/PhysRevC.92.034604
2015WU05 Phys.Rev. C 92, 044603 (2015) W.A.Wurtz, R.E.Pywell, B.E.Norum, S.Kucuker, B.D.Sawatzky, H.R.Weller, S.Stave, M.W.Ahmed Photodisintegration of 7Li with progeny nuclei in excited states NUCLEAR REACTIONS 7Li(polarized γ, n)6Li, Eγ=13, 15 MeV, E(6Li) at 2.19, 3.56 MeV; 7Li(polarized γ, d)5He, Eγ=12, 13, 15 MeV, E(5He) at 1.27 MeV decays to n+α; measured neutron kinetic energy spectra, absolute cross sections and angular dependences using the Blowfish Neutron Detector Array. Photon beams from High Intensity Gamma-Ray Source (HIGS) at Duke University.
doi: 10.1103/PhysRevC.92.044603
2014BE09 Acta Phys.Pol. B45, 193 (2014) N.Benouaret, J.Beller, J.Isaak, J.H.Kelley, H.Pai, N.Pietralla, V.Yu.Ponomarev, R.Raut, C.Romig, G.Rusev, D.Savran, M.Scheck, L.Schnorrenberger, K.Sonnabend, A.P.Tonchev, W.Tornow, H.R.Weller, M.Zweidinger Photoexcitation of the Stable Tl Isotopes Below the Neutron Separation Energy NUCLEAR REACTIONS 203,205Tl(γ, γ'), E<7.5 MeV; measured reaction products, Eγ, Iγ; deduced dipole strength distribution. Comparison with available data.
doi: 10.5506/APhysPolB.45.193
2014KA04 Phys.Rev. C 89, 014601 (2014); Pub.Note Phys.Rev. C 89, 019902 (2014) A.Kafkarkou, M.W.Ahmed, D.P.Kendellen, I.Mazumdar, J.M.Mueller, L.S.Myers, M.H.Sikora, H.R.Weller, W.R.Zimmerman Cross section measurements of the 10B(p, γ)11C reaction between 2.0 and 6.0 MeV NUCLEAR REACTIONS 10B(p, γ)11C, E=2.0-6.0 MeV; measured Eγ, Iγ, 511-keV annihilation radiation from 11C decay, 11C decay curve, total production σ(E) for 11C by activation method at TUNL tandem accelerator facility; deduced astrophysical S factors. Comparison with previous measurements. Relevance to boron-fueled colliding beam nuclear reactors.
doi: 10.1103/PhysRevC.89.014601
2014LA04 Phys.Rev. C 89, 024002 (2014) G.Laskaris, Q.Ye, B.Lalremruata, Q.J.Ye, M.W.Ahmed, T.Averett, A.Deltuva, D.Dutta, A.C.Fonseca, H.Gao, J.Golak, M.Huang, H.J.Karwowski, J.M.Mueller, L.S.Myers, C.Peng, B.A.Perdue, X.Qian, P.U.Sauer, R.Skibinski, S.Stave, J.R.Tompkins, H.R.Weller, H.Witala, Y.K.Wu, Y.Zhang, W.Zheng Spin-dependent cross sections from the three-body photodisintegration of 3He at incident energies of 12.8 and 14.7 MeV NUCLEAR REACTIONS 3He(polarized γ, n), E=12.8, 14.7 MeV; measured time-of-flight spectra, γ spectra, and neutron spectra from three-body breakup of 3He using 16 liquid scintillator detectors, spin-dependent double-differential σ(E, θ) at HiγS-TUNL facility. Monoenergetic circularly polarized γ beam, and longitudinally polarized 3He target. Comparison with previous experimental results, and with theoretical calculations.
doi: 10.1103/PhysRevC.89.024002
2014MU01 Phys.Rev. C 89, 034615 (2014) J.M.Mueller, M.W.Ahmed, R.H.France, M.S.Johnson, H.J.Karwowski, L.S.Myers, J.Randrup, M.H.Sikora, M.C.Spraker, S.Stave, J.R.Tompkins, R.Vogt, H.R.Weller, C.S.Whisnant, W.R.Zimmerman Prompt neutron polarization asymmetries in photofission of 232Th, 233, 235, 238U, 237Np, and 239, 240Pu NUCLEAR REACTIONS 232Th, 233,235,238U, 237Np, 239,240Pu(polarized γ, F), E=5.3-7.6 MeV; measured E(n), I(n), time-of flight spectrum, angular distribution, and polarization asymmetry of prompt neutrons generated by fission, θ(fragment) at HIγS-TUNL facility; deduced angular distribution coefficients b and c, and compared with predicted values from FREYA computer code of event-by-event Monte Carlo prompt neutron+γ-ray emission calculation. Discussed differences in polarization asymmetries between the even-even actinides and odd-A actinides.
doi: 10.1103/PhysRevC.89.034615
2014MU14 Nucl.Instrum.Methods Phys.Res. A754, 57 (2014) J.M.Mueller, M.W.Ahmed, H.R.Weller A novel method to assay special nuclear materials by measuring prompt neutrons from polarized photofission NUCLEAR REACTIONS 232Th, 233,235,238U, 237Np, 239,240Pu(γ, F), E=5-7.5 MeV; analyzed available data; deduced polarization asymmetry, absolute uncertainty in the enrichment of a sample, a novel method of assaying the fissile and non-fissile content.
doi: 10.1016/j.nima.2014.03.042
2014MY01 Phys.Rev. C 89, 035202 (2014) L.S.Myers, K.Shoniyozov, M.F.Preston, M.D.Anderson, J.R.M.Annand, M.Boselli, W.J.Briscoe, J.Brudvik, J.I.Capone, G.Feldman, K.G.Fissum, K.Hansen, S.S.Henshaw, L.Isaksson, R.Jebali, M.A.Kovash, K.Lewis, M.Lundin, I.J.D.MacGregor, D.G.Middleton, D.E.Mittelberger, M.Murray, A.M.Nathan, S.Nutbeam, G.V.O'Rielly, B.Schroder, B.Seitz, S.C.Stave, H.R.Weller, for the COMPTON @ MAX-lab Collaboration Compton scattering from 12C using tagged photons in the energy range 65-115 MeV NUCLEAR REACTIONS 12C(γ, γ), E=65-115 MeV; measured photon spectra, σ(E, θ) at Tagged-Photon Facility of the MAX IV-Lund Laboratory; deduced bound-nucleon polarizabilities. GEANT4 lineshape analysis of Compton-scattered photon spectrum. Phenomenological model. Comparison with previous experimental results.
doi: 10.1103/PhysRevC.89.035202
2014MY04 Phys.Rev. C 90, 027603 (2014) L.S.Myers, M.W.Ahmed, G.Feldman, A.Kafkarkou, D.P.Kendellen, I.Mazumdar, J.M.Mueller, M.H.Sikora, H.R.Weller, W.R.Zimmerman Compton scattering from 6Li at 86 MeV NUCLEAR REACTIONS 6Li, 16O(polarized γ, γ), E=86 MeV; measured Eγ, Iγ, σ(θ) at HIγS facility at TUNL; deduced E1, E2, QD resonance parameters. GEANT4 simulations. Discussed nuclear polarizability. Comparison with earlier experimental results for 16O target.
doi: 10.1103/PhysRevC.90.027603
2014SA20 Phys.Rev. C 89, 035803 (2014) A.Sauerwein, K.Sonnabend, M.Fritzsche, J.Glorius, E.Kwan, N.Pietralla, C.Romig, G.Rusev, D.Savran, L.Schnorrenberger, A.P.Tonchev, W.Tornow, H.R.Weller Determination of the 142Ce(γ, n) cross section using quasi-monoenergetic Compton backscattered γ rays NUCLEAR REACTIONS 142Ce(polarized γ, n), E=7.6=9.7 MeV; measured Eγ, Iγ, σ(E) at HIγS-TUNL facility. Activation method. Comparison with Hauser-Feshbach calculations using different γ-ray strength functions, and with predictions of Hartree-Fock-BCS model. Relevance to s-process branching at 141Ce, and elemental abundance.
doi: 10.1103/PhysRevC.89.035803
2014WU05 Phys.Rev. C 90, 014613 (2014) W.A.Wurtz, R.E.Pywell, B.E.Norum, S.Kucuker, B.D.Sawatzky, H.R.Weller, S.Stave, M.W.Ahmed Photodisintegration of 6Li NUCLEAR REACTIONS 6Li(polarized γ, p), (polarized γ, n), E=8, 9, 10, 11, 12, 13, 15, 15.6 MeV linearly polarized photons, and E=20, 25, 30, 35 MeV circularly polarized photons; measured En, In, time of flight spectra, σ(E) for (γ, n0), (γ, n1), (γ, n2), (γ, n3), (γ, p1), (γ, p2) and (γ, p3) reaction channels using HIγS facility at TUNL. Legendre function parametrizations, and GEANT4 simulation. Comparison with predictions of Lorentz integral transform calculation using AV4, MN, and MTI-III models.
doi: 10.1103/PhysRevC.90.014613
2013IS14 Phys.Lett. B 727, 361 (2013) J.Isaak, D.Savran, M.Krticka, M.W.Ahmed, J.Beller, E.Fiori, J.Glorius, J.H.Kelley, B.Loher, N.Pietralla, C.Romig, G.Rusev, M.Scheck, L.Schnorrenberger, J.Silva, K.Sonnabend, A.P.Tonchev, W.Tornow, H.R.Weller, M.Zweidinger Constraining nuclear photon strength functions by the decay properties of photo-excited states NUCLEAR REACTIONS 11B, 130Te(γ, γ'), (γ, X), E<10 MeV; measured reaction products, Eγ, Iγ; deduced excited states π quantum numbers within 5.5-8.5 MeV region, γ-ray branching ratio, population intensity. Comparison with DICEBOX simulations, DHIPS and HIγS facilities at Darmstadt and TUNL, respectively.
doi: 10.1016/j.physletb.2013.10.040
2013KA48 Nucl.Instrum.Methods Phys.Res. B316, 48 (2013) A.Kafkarkou, M.W.Ahmed, P.H.Chu, R.H.France, H.J.Karwowski, D.P.Kendellen, G.Laskaris, I.Mazumdar, J.M.Mueller, L.S.Myers, R.M.Prior, M.H.Sikora, M.C.Spraker, H.R.Weller, W.R.Zimmerman Study of the 10B(p, α) reaction between 2.1 and 6.0 MeV NUCLEAR REACTIONS 10B(p, α), E=2.1-6 MeV; measured reaction products, Eα, Iα; deduced σ(θ), S-factors and their uncertainties. Comparison with available data.
doi: 10.1016/j.nimb.2013.08.029
2013LA14 Phys.Rev.Lett. 110, 202501 (2013) G.Laskaris, Q.Ye, B.Lalremruata, Q.J.Ye, M.W.Ahmed, T.Averett, A.Deltuva, D.Dutta, A.C.Fonseca, H.Gao, J.Golak, M.Huang, H.J.Karwowski, J.M.Mueller, L.S.Myers, C.Peng, B.A.Perdue, X.Qian, P.U.Sauer, R.Skibinski, S.Stave, J.R.Tompkins, H.R.Weller, H.Witala, Y.K.Wu, Y.Zhang, W.Zheng First Measurements of Spin-Dependent Double-Differential Cross Sections and the Gerasimov-Drell-Hearn Integrand from 3He(pol) (γ(pol), n)pp at Incident Photon Energies of 12.8 and 14.7 MeV NUCLEAR REACTIONS 3He(polarized γ, n), E=12.8, 14.7 MeV; measured reaction products, En, In; deduced σ, σ(θ, E) and their uncertainties, contributions from the three-body photodisintegration to the 3He Gerasimov-Drell-Hearn integrand. Comparison with available data.
doi: 10.1103/PhysRevLett.110.202501
2013LO05 Nucl.Instrum.Methods Phys.Res. A723, 136 (2013) B.Loher, V.Derya, T.Aumann, J.Beller, N.Cooper, M.Duchene, J.Endres, E.Fiori, J.Isaak, J.Kelley, M.Knorzer, N.Pietralla, C.Romig, D.Savran, M.Scheck, H.Scheit, J.Silva, A.Tonchev, W.Tornow, H.Weller, V.Werner, A.Zilges The high-efficiency γ-ray spectroscopy setup γ3 at HIγS NUCLEAR REACTIONS 32S(γ, γ'), E=8.125 MeV; measured reaction products, Eγ, Iγ; deduced precise value for the branching ratio for 1+ to 2+ transition.
doi: 10.1016/j.nima.2013.04.087
2013RO28 Phys.Rev. C 88, 044331 (2013) C.Romig, J.Beller, J.Glorius, J.Isaak, J.H.Kelley, E.Kwan, N.Pietralla, V.Yu.Ponomarev, A.Sauerwein, D.Savran, M.Scheck, L.Schnorrenberger, K.Sonnabend, A.P.Tonchev, W.Tornow, H.R.Weller, A.Zilges, M.Zweidinger Low-lying dipole strength of the open-shell nucleus 94Mo NUCLEAR REACTIONS 94Mo(γ, γ'), (polarized γ, γ'), E=5.47, 6.05, 6.44, 6.61, 6.89, 7.65, 8.70 MeV; measured Eγ, Iγ, γγ(θ), γ-polarization asymmetry using DHIPS setup at S-DALINAC, and HiγS at TUNL and DFELL facilities. 94Mo; deduced levels, J, π, Γ20/Γ, branching ratios, B(E1), B(M1), E1 strength distributions, feeding of first 2+ level, elastic σ. Comparison with QPM calculations, and statistical model using DICEBOX computer code.
doi: 10.1103/PhysRevC.88.044331
2013SC08 Phys.Rev. C 87, 051304 (2013) M.Scheck, V.Yu.Ponomarev, T.Aumann, J.Beller, M.Fritzsche, J.Isaak, J.H.Kelley, E.Kwan, N.Pietralla, R.Raut, C.Romig, G.Rusev, D.Savran, K.Sonnabend, A.P.Tonchev, W.Tornow, H.R.Weller, M.Zweidinger Decay pattern of the pygmy dipole resonance in 60Ni NUCLEAR REACTIONS 60Ni(polarized γ, γ'), E=7.65-9.66 MeV; measured Eγ, Iγ, M1 and E1 strengths at HIγS-TUNL facility. 60Ni; deduced levels, J, π, PDR, branching ratios, number of 1+ and 1- states. Comparison with quasiparticle phonon model (QPM) calculations.
doi: 10.1103/PhysRevC.87.051304
2013SC20 Phys.Rev. C 88, 044304 (2013) M.Scheck, V.Yu.Ponomarev, M.Fritzsche, J.Joubert, T.Aumann, J.Beller, J.Isaak, J.H.Kelley, E.Kwan, N.Pietralla, R.Raut, C.Romig, G.Rusev, D.Savran, L.Schorrenberger, K.Sonnabend, A.P.Tonchev, W.Tornow, H.R.Weller, A.Zilges, M.Zweidinger Photoresponse of 60Ni below 10-MeV excitation energy: Evolution of dipole resonances in fp-shell nuclei near N=Z NUCLEAR REACTIONS 60Ni(γ, γ'), (polarized γ, γ'), E<10 MeV; 58Ni(polarized γ, γ'), E<10 MeV; measured Eγ, Iγ, γγ(θ), γ-ray polarization, integrated σ, γ-branching ratios using High-intensity photon setup at S-DALINAC facility. 58,60Ni; deduced levels, J, π, width, level half-lives, B(E1), B(M1), B(E2), E1 and M1 strength distributions. Thomas-Reiche-Kuhn sum rule. Pygmy-dipole resonances. Comparison with QPM calculations.
doi: 10.1103/PhysRevC.88.044304
2013WE01 Acta Phys.Pol. B44, 587 (2013) H.R.Weller, M.W.Ahmed, J.M.Mueller, L.S.Myers, W.R.Zimmerman, G.Feldman, M.H.Sikora Precise Determination of the Isovector Giant Quadrupole Resonance in Nuclei NUCLEAR REACTIONS 89Y, 209Bi(γ, γ'), E<36 MeV; measured reaction products, Eγ, Iγ; deduced polarization ratios, IVGQR parameters, Isovector E2 energy weighted sum rule, width, resonance parameters. 124Sn, 142Nd(γ, γ'), E not given; calculated yields.
doi: 10.5506/APhysPolB.44.587
2013ZI03 Phys.Rev.Lett. 110, 152502 (2013) W.R.Zimmerman, M.W.Ahmed, B.Bromberger, S.C.Stave, A.Breskin, V.Dangendorf, Th.Delbar, M.Gai, S.S.Henshaw, J.M.Mueller, C.Sun, K.Tittelmeier, H.R.Weller, Y.K.Wu Unambiguous Identification of the Second 2+ State in 12C and the Structure of the Hoyle State NUCLEAR REACTIONS 12C(γ, α)8Be, E=9.1-10.7 MeV; measured reaction products, Eα, Iα. 12C; deduced second 2+ Hoyle state, widths, B(E2). Comparison with available data.
doi: 10.1103/PhysRevLett.110.152502
2012BE39 J.Phys.:Conf.Ser. 366, 012003 (2012) J.Beller, J.Wagner, M.Ahmed, D.Deleanu, D.M.Filipescu, T.Glodariu, J.Isaak, J.H.Kelley, E.Kwan, N.Pietralla, R.Raut, C.Romig, G.Rusev, M.Scheck, S.C.Stave, A.Tonchev, W.Tornow, H.R.Weller, N.-V.Zamfir, M.Zweidinger Energy separation of the 1+/1- parity doublet in 20Ne NUCLEAR REACTIONS 28Si, 20Ne(polarized γ, γ'), E=11.26 MeV; measured reaction products, Eγ, Iγ. 20Ne; deduced integrated σ, energy separation, J, π of parity doublet states, effective nuclear enhancement factor.
doi: 10.1088/1742-6596/366/1/012003
2012KE01 Nucl.Phys. A880, 88 (2012) J.H.Kelley, E.Kwan, J.E.Purcell, C.G.Sheu, H.R.Weller Energy levels of light nuclei A=11 COMPILATION 11He, 11Li, 11Be, 11B, 11C, 11N; compiled, evaluated levels, J, π, mass, resonances, resonance T1/2, decay modes, γ transitions, Q, quadrupole moment, μ. Comparison with older evaluations.
doi: 10.1016/j.nuclphysa.2012.01.010
2012MU01 Phys.Rev. C 85, 014605 (2012) J.M.Mueller, M.W.Ahmed, B.Davis, J.M.Hall, S.S.Henshaw, M.S.Johnson, H.J.Karwowski, D.Markoff, L.S.Myers, B.A.Perdue, S.Stave, J.R.Tompkins, M.J.Tuffley, H.R.Weller Measurement of prompt neutron polarization asymmetries in photofission of 235, 238U, 239Pu, and 232Th NUCLEAR REACTIONS 232Th, 235,238U, 239Pu(polarized γ, F), E=5.6-7.3 MeV; measured neutron spectra, prompt fission neutron angular distributions polarization asymmetries using High Intensity γ-ray Source (HIγS). Comparison with simplified model of photofission.
doi: 10.1103/PhysRevC.85.014605
2012MY05 Phys.Rev. C 86, 044614 (2012) L.S.Myers, M.W.Ahmed, G.Feldman, S.S.Henshaw, M.A.Kovash, J.M.Mueller, H.R.Weller Compton scattering from 6Li at 60 MeV NUCLEAR REACTIONS 6Li, 16O(polarized γ, γ), E=60 MeV; measured Compton scattered γ spectra, angular distributions using High Intensity Gamma-Ray Source (HIγS) at TUNL facility; deduced Compton scattering σ(θ).
doi: 10.1103/PhysRevC.86.044614
2011AH01 Eur.Phys.J. A 47, 36 (2011) J.Ahrens, S.Altieri, J.R.M.Annand, H.-J.Arends, R.Beck, M.A.Blackston, C.Bradtke, A.Braghieri, N.D'Hose, H.Dutz, A.Fix, E.Heid, O.Jahn, F.Klein, R.Kondratiev, M.Lang, V.Lisin, M.Martinez-Fabregate, J.C.McGeorge, W.Meyer, A.Panzeri, P.Pedroni, T.Pinelli, D.Protopopescu, G.Reicherz, Ch.Rohlof, G.Rosner, T.Rostomyan, D.Ryckbosch, G.Tamas, A.Thomas, H.R.Weller, for the GDH and A2 Collaborations Measurement of the helicity-dependent total cross-section for the γn → pπ-π0 reaction NUCLEAR REACTIONS 2H(γ, p), E=450-800 MeV; measured γ spectra, γ(proton)-, γ(charged-particle)-coin, charged-particle spectra using the DAPHNE detector with incident circularly polarized γ, longitudinally polarized deuterons; deduced unpolarized and polarized γn to pπ+π0 σ. Comparison with previous data and calculations.
doi: 10.1140/epja/i2011-11036-1
2011HE18 Phys.Rev.Lett. 107, 222501 (2011) S.S.Henshaw, M.W.Ahmed, G.Feldman, A.M.Nathan, H.R.Weller New Method for Precise Determination of the Isovector Giant Quadrupole Resonances in Nuclei NUCLEAR REACTIONS 209Bi(γ, γ), E=15-26 MeV; measured reaction products, Eγ, Iγ; deduced parameters of isovector giant quadrupole resonance (IVGQR).
doi: 10.1103/PhysRevLett.107.222501
2011PE08 Phys.Rev. C 83, 034003 (2011) B.A.Perdue, M.W.Ahmed, S.S.Henshaw, P.-N.Seo, S.Stave, H.R.Weller, P.P.Martel, A.Teymurazyan Cross sections for the three-body photodisintegration of 3He at Eγ = 12.8, 13.5, and 14.7 MeV NUCLEAR REACTIONS 3He(γ, n), E=12.8, 13.5, 14.7 MeV; measured En, In, angular distributions, TOF technique, absolute cross sections. Comparisons with phase-space calculations, and the state-of-the-art three-body calculations.
doi: 10.1103/PhysRevC.83.034003
2011ST01 Phys.Lett. B 696, 26 (2011) S.Stave, M.W.Ahmed, R.H.France III, S.S.Henshaw, B.Muller, B.A.Perdue, R.M.Prior, M.C.Spraker, H.R.Weller Understanding the 11B(p, α)αα reaction at the 0.675 MeV resonance NUCLEAR REACTIONS 11B(p, α), E=2.64 MeV; measured Eα, Iα, α-α coin.; deduced implications on reaction model, astrophysical reaction rates.
doi: 10.1016/j.physletb.2010.12.015
2011WU06 Phys.Rev. C 84, 044601 (2011) W.A.Wurtz, R.E.Pywell, B.E.Norum, S.Kucuker, B.D.Sawatzky, H.R.Weller, M.W.Ahmed, S.Stave Measurement of the absolute and differential cross sections for 7Li(γ, n0)6Li NUCLEAR REACTIONS 7Li(γ, n), E=10, 11, 12, 13, 15, 20, 25, 30, 35 MeV; 7Li(polarized γ, n), E=10-15 MeV; measured E(n), I(n), TOF spectra using High Intensity Gamma-Ray Source (HIGS); deduced absolute and differential cross sections, yields, associated Legendre polynomial expansion coefficients for 7Li(γ, n)6Li(g.s.) reaction channel.
doi: 10.1103/PhysRevC.84.044601
2010AH02 Eur.Phys.J. A 44, 189 (2010) J.Ahrens, S.Altieri, J.R.M.Annand, H.-J.Arends, R.Beck, M.A.Blackston, C.Bradtke, A.Braghieri, N.d'Hose, H.Dutz, A.Fix, E.Heid, O.Jahn, F.Klein, R.Kondratiev, M.Lang, V.Lisin, M.Martinez-Fabregate, J.C.McGeorge, W.Meyer, A.Panzeri, P.Pedroni, T.Pinelli, D.Protopopescu, G.Reicherz, Ch.Rohlof, G.Rosner, T.Rostomyan, D.Ryckbosch, M.Schwamb, G.Tamas, A.Thomas, H.R.Weller, Helicity dependence of the γd → πNN reactions in the Δ -resonance region NUCLEAR REACTIONS 2H(γ, πX), E=301-455 MeV; 2H(polarized γ, πX), E=307-451 MeV; measured yields, σ(θ), helicity-dependent σ(θ) with polarized beam; deduced reaction mechanism features. Comparison with other data and various models.
doi: 10.1140/epja/i2010-10946-6
2010PI13 J.Phys.:Conf.Ser. 205, 012036 (2010) N.Pietralla, T.C.Li, M.Fritzsche, M.W.Ahmed, D.Savran, A.P.Tonchev, W.Tornow, H.R.Weller, V.Werner Spin and parity assignments to dipole excitations of the odd-mass nucleus 207Pb from nuclear resonance fluorescence experiments with linearly-polarized γ-ray beams NUCLEAR REACTIONS Pb(polarized γ, γ'), E=5400-5700 keV; measured Eγ, Iγ(θ) using HIγS at DFELL. 206,207,208Pb deduced low-lying dipole-excited levels, J, π, E1 γ decay rate.
doi: 10.1088/1742-6596/205/1/012036
2010PU04 Nucl.Phys. A848, 1 (2010) J.E.Purcell, J.H.Kelley, E.Kwan, C.G.Sheu, H.R.Weller Energy levels of light nuclei A=3 COMPILATION 3n, 3H, 3He, 3Li; compiled evaluated nuclear structure data.
doi: 10.1016/j.nuclphysa.2010.08.012
2009PI14 Phys.Lett. B 681, 134 (2009) N.Pietralla, T.C.Li, M.Fritzsche, M.W.Ahmed, T.Ahn, A.Costin, J.Enders, J.Li, S.Muller, P.von Neumann-Cosel, I.V.Pinayev, V.Yu.Ponomarev, D.Savran, A.P.Tonchev, W.Tornow, H.R.Weller, V.Werner, Y.K.Wu, A.Zilges Competition between excited core states and 1hω single-particle excitations at comparable energies in 207Pb from photon scattering NUCLEAR REACTIONS 208Pb(polarized γ, γ'), E=5.5, 5.6 MeV; measured Eγ, Iγ using the azimuthal nuclear resonance fluorescence intensity asymmetry technique. 206,207,208Pb; deduced levels, J, π.
doi: 10.1016/j.physletb.2009.09.059
2008AH01 Phys.Rev. C 77, 044005 (2008) M.W.Ahmed, M.A.Blackston, B.A.Perdue, W.Tornow, H.R.Weller, B.Norum, B.Sawatzky, R.M.Prior, M.C.Spraker Near-threshold deuteron photodisintegration: An indirect determination of the Gerasimov-Drell-Hearn sum rule and forward spin polarizability (γ0) for the deuteron at low energies NUCLEAR REACTIONS 2H(polarized γ, n)p, E=2.44, 2.60, 2.72 MeV; measured analyzing power, σ, photon asymmetry, angular distributions, neutron spectra by time-of-flight; deduced Gerasimov-Drell-Hearn sum rule integrand and sum rule integrand for forward spin polarizability. Compared with theoretical predictions.
doi: 10.1103/PhysRevC.77.044005
2008BL14 Phys.Rev. C 78, 034003 (2008); Publishers Note Phys.Rev. C 78, 069905 (2008) M.A.Blackston, M.A.Ahmed, B.A.Perdue, H.R.Weller, B.Bewer, R.E.Pywell, W.A.Wurtz, R.Igarashi, S.Kucuker, B.Norum, K.Wang, J.Li, S.F.Mikhailov, V.G.Popov, Y.K.Wu, B.D.Sawatzky First observation of the splittings of the E1 p-wave amplitudes in low energy deuteron photodisintegration and its implications for the Gerasimov-Drell-Hearn Sum Rule integrand NUCLEAR REACTIONS 2H(polarized γ, n), E=14, 16 MeV; measured σ, σ(θ), linear analyzing power, phase shifts.
doi: 10.1103/PhysRevC.78.034003
2008ST10 Phys.Rev. C 77, 054607 (2008) S.Stave, M.W.Ahmed, A.J.Antolak, M.A.Blackston, A.S.Crowell, B.L.Doyle, S.S.Henshaw, C.R.Howell, P.Kingsberry, B.A.Perdue, P.Rossi, R.M.Prior, M.C.Spraker, H.R.Weller Cross section measurements of the 10B(d, n0)11C reaction below 160 keV NUCLEAR REACTIONS 10B(d, n)11C, E<160 keV; measured σ, astrophysical S factors, neutron spectra, angular distributions. Comparison with DWBA and Hauser-Feshbach calculations.
doi: 10.1103/PhysRevC.77.054607
2006LI23 Phys.Rev. C 73, 054306 (2006) T.C.Li, N.Pietralla, A.P.Tonchev, M.W.Ahmed, T.Ahn, C.Angell, M.A.Blackston, A.Costin, K.J.Keeter, J.Li, A.Lisetskiy, S.Mikhailov, Y.Parpottas, B.A.Perdue, G.Rainovski, W.Tornow, H.R.Weller, Y.K.Wu First evidence for spin-flip M1 strength in 40Ar NUCLEAR REACTIONS 40Ar(polarized γ, γ'), E=7.7-11 MeV; measured Eγ, Iγ, asymmetry. 40Ar deduced levels, J, π, excitation B(E1), B(M1), spin-flip M1 strength. Comparison with shell model predictions.
doi: 10.1103/PhysRevC.73.054306
2006PA27 Phys.Rev. C 74, 015804 (2006); Erratum Phys.Rev. C 74, 029903 (2006) Y.Parpottas, M.W.Ahmed, M.A.Blackston, R.H.France III, B.A.Perdue, R.M.Prior, A.Sabourov, M.C.Spraker, H.R.Weller Astrophysical S factor for the 11B(d, n)12C reaction below 135 keV NUCLEAR REACTIONS 11B(d, n), E=120-160 keV; measured En, yields, angular distributions; deduced astrophysical S-factors.
doi: 10.1103/PhysRevC.74.015804
2006SA03 Phys.Rev. C 73, 015801 (2006) A.Sabourov, M.W.Ahmed, M.A.Blackston, A.S.Crowell, C.R.Howell, B.A.Perdue, K.Sabourov, A.Tonchev, H.R.Weller, R.M.Prior, M.C.Spraker Astrophysical S factor for the 7Li(d, n0)8Be and 7Li(d, n1)8Be reactions NUCLEAR REACTIONS 7Li(d, n), E=45, 60, 80 keV; measured neutron spectra, σ(E); deduced integrated yields, astrophysical S-factor.
doi: 10.1103/PhysRevC.73.015801
2006SA49 Phys.Rev.C 74, 064611 (2006) A.Sabourov, M.W.Ahmed, M.A.Blackston, A.S.Crowell, C.R.Howell, K.Joshi, S.O.Nelson, B.A.Perdue, K.Sabourov, A.Tonchev, H.R.Weller, R.M.Prior, M.C.Spraker, B.Braizinha, N.Kalantar-Nayestanaki The 7Li(d(pol), n0)8Be and 7Li(d(pol), n1)8Be reactions below 160 keV NUCLEAR REACTIONS 7Li(polarized d, n), E=80, 130, 160 keV; measured σ(E, θ), analyzing powers; deduced transition matrix elements. Finite-range DWBA calculations, coupled reaction channels calculations.
doi: 10.1103/PhysRevC.74.064611
2005SA15 Phys.Rev. C 71, 034304 (2005) D.Savran, S.Muller, A.Zilges, M.Babilon, M.W.Ahmed, J.H.Kelley, A.Tonchev, W.Tornow, H.R.Weller, N.Pietralla, J.Li, I.V.Pinayev, Y.K.Wu Parity assignments in 172, 174Yb using polarized photons and the K quantum number in rare earth nuclei NUCLEAR REACTIONS 172,174Yb(polarized γ, γ'), E=2930, 3005, 3550 keV; measured Eγ, Iγ, asymmetries. 172,174Yb levels deduced π. Parity and branching ratio systematics discussed.
doi: 10.1103/PhysRevC.71.034304
2004FR30 Phys.Rev. C 70, 044317 (2004) C.Fransen, N.Pietralla, A.P.Tonchev, M.W.Ahmed, J.Chen, G.Feldman, U.Kneissl, J.Li, V.N.Litvinenko, B.Perdue, I.V.Pinayev, H.H.Pitz, R.Prior, K.Sabourov, M.Spraker, W.Tornow, H.R.Weller, V.Werner, Y.K.Wu, S.W.Yates Parity assignments to strong dipole excitations of 92Zr and 96Mo NUCLEAR REACTIONS 92Zr(polarized γ, γ'), E=3.47, 3.64 MeV; 96Mo(γ, γ'), E=2.80, 3.30, 3.43, 3.60, 3.90 MeV; measured Eγ, Iγ, azimuthal asymmetry. 92Zr, 96Mo levels deduced π.
doi: 10.1103/PhysRevC.70.044317
2004PE24 Phys.Rev. C 70, 064305 (2004) B.A.Perdue, M.W.Ahmed, A.P.Tonchev, H.R.Weller, G.Feldman, V.N.Litvinenko, I.V.Pinayev, B.E.Norum, R.M.Prior, M.C.Spraker, B.D.Sawatzky Compton scattering of polarized γ rays by 16O for Eγ = 25-40 MeV NUCLEAR REACTIONS 16O(polarized γ, γ'), E=25-40 MeV; measured polarization asymmetries; deduced resonance features.
doi: 10.1103/PhysRevC.70.064305
2004PR09 Phys.Rev. C 70, 055801 (2004) R.M.Prior, M.C.Spraker, A.M.Amthor, K.J.Keeter, S.O.Nelson, A.Sabourov, K.Sabourov, A.Tonchev, M.Ahmed, J.H.Kelley, D.R.Tilley, H.R.Weller, H.M.Hofmann Energy dependence of the astrophysical S factor for the 6Li(p, γ)7Be reaction NUCLEAR REACTIONS 6Li(polarized p, γ), E=80, 95, 110, 120, 130 keV; measured Eγ, Iγ, analyzing power; deduced energy dependence of astrophysical S-factor.
doi: 10.1103/PhysRevC.70.055801
2004SA61 Phys.Rev. C 70, 064601 (2004) K.Sabourov, M.W.Ahmed, R.S.Canon, B.Crowley, K.Joshi, J.H.Kelley, S.O.Nelson, B.A.Perdue, E.C.Schreiber, A.Sabourov, A.Tonchev, H.R.Weller, E.A.Wulf, R.M.Prior, M.C.Spraker, H.M.Hofmann, M.Trini Experimental and theoretical study of the 2H(d(pol), γ)4He reaction below Ec.m.=60keV NUCLEAR REACTIONS 2H(polarized d, γ), E<115 keV; measured Eγ, Iγ, σ(θ), Ay(θ), T20(θ); deduced transition matrix elements. Comparison with resonating group model predictions.
doi: 10.1103/PhysRevC.70.064601
2004TI06 Nucl.Phys. A745, 155 (2004) D.R.Tilley, J.H.Kelley, J.L.Godwin, D.J.Millener, J.E.Purcell, C.G.Sheu, H.R.Weller Energy levels of light nuclei A = 8, 9, 10 COMPILATION 8,10n, 8,9,10He, 8,9,10Li, 8,9,10Be, 8,9,10B, 8,9,10C, 9,10N, 10O, 10F, 10Ne; compiled, evaluated structure data.
doi: 10.1016/j.nuclphysa.2004.09.059
2003MO10 Nucl.Instrum.Methods Phys.Res. A505, 374 (2003) C.E.Moss, C.M.Frankle, V.N.Litvinenko, H.R.Weller Recent results using the high intensity γ-ray source facility NUCLEAR REACTIONS Cu(γ, X), E=3.45-11.96 MeV; measured attenuation σ. Free-electron laser.
doi: 10.1016/S0168-9002(03)01100-8
2003NE17 Phys.Rev. C 68, 065804 (2003) S.O.Nelson, M.W.Ahmed, B.A.Perdue, K.Sabourov, A.L.Sabourov, A.P.Tonchev, R.M.Prior, M.Spraker, H.R.Weller Analyzing power measurement for the 14N(p(pol), γ)15O reaction at astrophysically relevant energies NUCLEAR REACTIONS 14N(polarized p, γ), E=270 MeV; measured σ(θ), Ay(θ); deduced astrophysical S-factors. Comparison with direct-capture-plus-resonance model predictions.
doi: 10.1103/PhysRevC.68.065804
2003TO21 Phys.Rev. C 68, 045803 (2003) A.P.Tonchev, S.O.Nelson, K.Sabourov, B.T.Crowley, K.Joshi, H.R.Weller, J.H.Kelley, R.M.Prior, M.Spraker, N.Kalantar-Nayestanaki The 10B(p(pol), γ)11C reaction at astrophysically relevant energies NUCLEAR REACTIONS 10B(polarized p, γ), E=100, 130, 160 keV; measured Eγ, Iγ, σ(E, θ), Ay(E, θ); deduced astrophysical S-factors, subthreshold resonance. Direct capture model analysis.
doi: 10.1103/PhysRevC.68.045803
2002CA18 Phys.Rev. C65, 044008 (2002) R.S.Canon, S.O.Nelson, K.Sabourov, E.Wulf, H.R.Weller, R.M.Prior, M.Spraker, J.H.Kelley, D.R.Tilley 3H(p(pol), γ)4He Reaction below Ep = 80 keV NUCLEAR REACTIONS 3H(polarized p, γ), E=40, 80 keV; measured σ(θ), Ay(θ); deduced astrophysical S-factors.
doi: 10.1103/PhysRevC.65.044008
2002PI02 Phys.Rev.Lett. 88, 012502 (2002) N.Pietralla, Z.Berant, V.N.Litvinenko, S.Hartman, F.F.Mikhailov, I.V.Pinayev, G.Swift, M.W.Ahmed, J.H.Kelley, S.O.Nelson, R.Prior, K.Sabourov, A.P.Tonchev, H.R.Weller Parity Measurements of Nuclear Levels using a Free-Electron-Laser Generated γ-Ray Beam NUCLEAR REACTIONS 138Ba(polarized γ, γ'), E ≈ 5.62 MeV; measured Eγ, Iγ, azimuthal asymmetries. 138Ba levels deduced π. Nuclear resonance fluorescence, free-electron laser, comparisons with previous results.
doi: 10.1103/PhysRevLett.88.012502
2002PI08 Phys.Rev. C65, 047305 (2002); Erratum Phys.Rev. C65, 069901 (2002) N.Pietralla, V.N.Litvinenko, S.Hartman, F.F.Mikhailov, I.V.Pinayev, G.Swift, M.W.Ahmed, J.H.Kelley, S.O.Nelson, R.Prior, K.Sabourov, A.P.Tonchev, H.R.Weller Identification of the Jπ = 1- Two-Phonon State of 88Sr NUCLEAR REACTIONS 88Sr(polarized γ, γ'), E=4.74, 5.02, 7.54 MeV; measured Eγ, Iγ, azimuthal asymmetry. 88Sr level deduced J, π.
doi: 10.1103/PhysRevC.65.047305
2002TI10 Nucl.Phys. A708, 3 (2002) D.R.Tilley, C.M.Cheves, J.L.Godwin, G.M.Hale, H.M.Hofmann, J.H.Kelley, C.G.Sheu, H.R.Weller Energy Levels of Light Nuclei A = 5, 6, 7 COMPILATION 5,6n, 5,6,7H, 5,6,7He, 5,6,7Li, 5,6,7Be, 6,7B, 6C; compiled, evaluated structure data.
doi: 10.1016/S0375-9474(02)00597-3
2001NE15 Phys.Rev. C64, 065804 (2001) C.D.Nesaraja, C.R.Brune, B.T.Crowley, J.H.Kelley, S.O.Nelson, R.M.Prior, K.Sabourov, D.R.Tilley, A.Tonchev, H.R.Weller Ratio of S Factors for (p, γ) Reactions on 12C and 13C at Astrophysically Relevant Energies NUCLEAR REACTIONS 12,13C(p, γ), E < 160 keV; measured σ; deduced S-factor ratio. Comparison with model predictions.
doi: 10.1103/PhysRevC.64.065804
2001WE07 Nucl.Phys. A684, 516c (2001) Threshold Contribution to the Gerasimov-Drell-Hearn Sum Rule in 3He NUCLEAR REACTIONS 2H(polarized p, γ), E(cm)=26.6 keV; analyzed σ(θ), analyzing powers; deduced near-threshold sum rule contribution.
doi: 10.1016/S0375-9474(01)00481-X
2001WE20 Acta Phys.Hung.N.S. 14, 405 (2001) A Free-Electron Laser Generated Gamma-Ray Beam for Nuclear Physics
doi: 10.1556/APH.14.2001.1-4.38
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
2000KE10 Phys.Rev. C62, 025803 (2000) J.H.Kelley, R.S.Canon, S.J.Gaff, R.M.Prior, B.J.Rice, E.C.Schreiber, M.Spraker, D.R.Tilley, E.A.Wulf, H.R.Weller The 11B(p(pol), γ)12C Reaction below 100 keV NUCLEAR REACTIONS 11B(polarized p, γ), E < 100 keV; measured Eγ, Iγ, σ, Ay(θ=90°); deduced astrophysical S factor, influence of low-lying resonances.
doi: 10.1103/PhysRevC.62.025803
2000NE09 Nucl.Phys. A679, 199 (2000) S.O.Nelson, E.A.Wulf, J.H.Kelley, H.R.Weller Evaluations of Thermonuclear Proton Capture Reaction Rates for 2H, 7Li, 9Be, and 11B NUCLEAR REACTIONS 2H, 7Li, 9Be, 11B(p, γ), E ≈ 100 keV; analyzed σ; deduced Maxwellian averaged thermonuclear reaction rates.
doi: 10.1016/S0375-9474(00)00341-9
2000RI10 Phys.Rev. C61, 064612 (2000) B.J.Rice, R.S.Canon, E.A.Wulf, H.R.Weller, K.Keeter, N.R.Kolb, C.Mueller, R.E.Pywell, G.A.Retzlaff, D.M.Skopik, G.Feldman Two-Deuteron Photodisintegration of 4He at Eγ = 150-250 MeV NUCLEAR REACTIONS 4He(γ, d), E=150-250 MeV; measured deuteron spectra, σ(θ), σ, dd-coin; deduced reaction mechanism features. Transition matrix element analysis, direct capture calculation.
doi: 10.1103/PhysRevC.61.064612
2000SC22 Phys.Rev. C61, 061604 (2000) E.C.Schreiber, R.S.Canon, B.T.Crowley, C.R.Howell, J.H.Kelley, V.N.Litvinenko, S.O.Nelson, S.H.Park, I.V.Pinayev, R.M.Prior, K.Sabourov, M.Spraker, W.Tornow, Y.Wu, E.A.Wulf, H.R.Weller First Measurement of the Near-Threshold 2H(γ(pol), n)p Analyzing Power using a Free-Electron Laser Based γ-Ray Source NUCLEAR REACTIONS 2H(polarized γ, n), E=3.58 MeV; measured neutron spectrum, analyzing power; deduced E1, M1 contributions to cross section. Free-electron laser.
doi: 10.1103/PhysRevC.61.061604
2000SP01 Phys.Rev. C61, 015802 (2000) M.Spraker, R.M.Prior, M.A.Godwin, B.J.Rice, E.A.Wulf, J.H.Kelley, D.R.Tilley, H.R.Weller Slope of the Astrophysical S Factor for the 7Li(p, γ)8Be Reaction NUCLEAR REACTIONS 7Li(polarized p, γ), E=40-100 keV; measured yields, analyzing power; deduced slope of astrophysical S factor, role of subthreshold resonance.
doi: 10.1103/PhysRevC.61.015802
2000WU02 Phys.Rev. C61, 021601 (2000) E.A.Wulf, R.S.Canon, S.J.Gaff, J.H.Kelley, R.M.Prior, E.C.Schreiber, M.Spraker, D.R.Tilley, H.R.Weller, M.Viviani, A.Kievsky, S.Rosati, R.Schiavilla New Photodisintegration Threshold Observable in 3He NUCLEAR REACTIONS 2H(polarized p, γ), 1H(polarized d, γ), E=0-80 keV; measured σ(θ), vector and tensor analyzing powers, γ-ray polarization. 3He deduced matrix elements, sum rule features.
doi: 10.1103/PhysRevC.61.021601
1999GA21 Phys.Rev. C59, 3425 (1999) S.J.Gaff, R.S.Canon, J.H.Kelley, S.O.Nelson, K.Sabourov, E.C.Schreiber, D.R.Tilley, H.R.Weller, E.A.Wulf Spin Parity of the 7.478 MeV State of 10B and the S Factor of the 9Be(p(pol), γ0)10B Reaction NUCLEAR REACTIONS 9Be(polarized p, γ), E=280 keV; measured Ay(θ); deduced ground-state capture S-factor. 10B level deduced J, π.
doi: 10.1103/PhysRevC.59.3425
1999WU03 At.Data Nucl.Data Tables 72, 21 (1999) E.A.Wulf, J.Guillemette, R.G.Seyler, H.R.Weller Angular Distribution Coefficients for γ-Ray Polarizations Produced in Polarized Capture Reactions
doi: 10.1006/adnd.1999.0807
1998TI06 Nucl.Phys. A636, 249 (1998) D.R.Tilley, C.M.Cheves, J.H.Kelley, S.Raman, H.R.Weller Energy Levels of Light Nuclei, A = 20 COMPILATION 20N, 20O, 20F, 20Ne, 20Na, 20Mg; compiled, evaluated structure data.
doi: 10.1016/S0375-9474(98)00129-8
1998WE06 Nucl.Phys. A631, 627c (1998) Polarized Radiative Capture Studies of the 3-Body System Below 80 keV NUCLEAR REACTIONS 2H(polarized p, γ), E=80 keV; measured Eγ, Iγ, σ(θ), A(y)(θ), T20(θ), T11(θ); deduced astrophysical s-factor, meson exchange currents effects.
doi: 10.1016/S0375-9474(98)00080-3
1998WE07 Nucl.Instrum.Methods Phys.Res. A402, 428 (1998) Polarized Deuteron Capture on 3He in the Fusion Resonance Region NUCLEAR REACTIONS 3He(polarized d, γ), E ≤ 800 keV; measured σ(θ), A(y)(θ), A(yy)(θ), T(20)(θ); deduced tensor force role. Resonating group model calculations.
doi: 10.1016/S0168-9002(97)00885-1
1998WU05 Phys.Rev. C58, 517 (1998) E.A.Wulf, M.A.Godwin, J.F.Guillemette, C.M.Laymon, R.M.Prior, B.J.Rice, M.Spraker, D.R.Tilley, H.R.Weller Astrophysical S Factors for the 9Be(p(pol), γ)10B Reaction NUCLEAR REACTIONS 9Be(polarized p, γ), E=100 keV; measured Eγ, Iγ, A(y)(θ); deduced astrophysical S-factors. HPGe detector. Direct capture plus resonance calculation.
doi: 10.1103/PhysRevC.58.517
1997GO13 Phys.Rev. C56, 1605 (1997) M.A.Godwin, C.M.Laymon, R.M.Prior, D.R.Tilley, H.R.Weller 7Li(p(pol), γ)8Be Reaction at E(p) = 80-0 keV NUCLEAR REACTIONS, ICPND 7Li(polarized p, γ), E=0-80 keV; measured σ(θ)/A0, A(y)(θ) for capture to ground, first-, third-excited states, total σ, astrophysical S-factor for capture to third-excited state; deduced M1 resonance capture role, implications to M1 capture in 7Be(p, γ) reaction. Direct capture model, other reactions discussed.
doi: 10.1103/PhysRevC.56.1605
1997RI07 Phys.Rev. C55, 2700 (1997) Determination of the Asymptotic D- to S-State Ratio for 3He from the reaction 1H(d(pol), γ)3He at E(d)(lab) = 80-0 keV NUCLEAR REACTIONS 1H(polarized d, γ), E ≤ 80 keV; measured σ(θ), T20(θ). 2H(polarized p, γ), E ≤ 40 keV; analyzed polarization data. 3He deduced D-/S-state ratio.
doi: 10.1103/PhysRevC.55.2700
1997RI15 Phys.Rev. C56, R2917 (1997) B.J.Rice, E.A.Wulf, R.S.Canon, J.H.Kelley, R.M.Prior, M.Spraker, D.R.Tilley, H.R.Weller Direct Determination of the Doublet and Quartet M1 Cross Sections in p-d Radiative Capture at Near-Thermal Energies NUCLEAR REACTIONS 1H(polarized d, γ), E=80 keV; measured T11(θ); analyzed σ(θ), T20(θ); 2H(polarized p, γ), E=40 keV; analyzed A(y); 2H(p, γ), E=80 keV; analyzed γ-polarization; deduced M1 radiative capture σ, meson exchange currents role.
doi: 10.1103/PhysRevC.56.R2917
1997SC31 Phys.Rev. C56, 2565 (1997) G.J.Schmid, B.J.Rice, R.M.Chasteler, M.A.Godwin, G.C.Kiang, L.L.Kiang, C.M.Laymon, R.M.Prior, D.R.Tilley, H.R.Weller The 2H(p(pol), γ)3He and 1H(d(pol), γ)3He Reactions Below 80 keV NUCLEAR REACTIONS 2H(p, γ), (polarized p, γ), 1H(d, γ), (polarized d, γ), E=10-80 keV; measured Eγ, Iγ, σ(E, θ), vector, tensor analyzing power, astrophysical S-factor, γ polarization; deduced meson exchange current, Δ-isobar effects, astrophysical implications. 3He deduced asymptotic D- to S-state ratio. Three-body calculations. Ice targets.
doi: 10.1103/PhysRevC.56.2565
1996GO01 Phys.Rev. C53, R1 (1996) M.A.Godwin, R.M.Chasteler, C.M.Laymon, R.M.Prior, D.R.Tilley, H.R.Weller Search for p Waves in Low-Energy Proton Capture Reactions Relevant to the Solar Neutrino Problem NUCLEAR REACTIONS, ICPND 7Li(polarized p, γ), E=0-80 keV; measured αγ-coin, A(y)(θ), σ(θ)/A0; deduced p-wave strength, astrophysical implications.
doi: 10.1103/PhysRevC.53.R1
1996LA10 Phys.Rev. C53, 1977 (1996) C.M.Laymon, R.M.Prior, D.R.Tilley, H.R.Weller Low-Energy Polarized-Proton Capture on 6Li NUCLEAR REACTIONS, ICPND 6Li(polarized p, γ), E ≤ 80 keV; measured Eγ, Iγ, thick target yield, analyzing power vs θ; deduced s-, p-wave relative contributions, astrophysical S-factor.
doi: 10.1103/PhysRevC.53.1977
1996SC01 Phys.Rev. C53, 35 (1996) G.J.Schmid, R.M.Chasteler, H.R.Weller, D.R.Tilley, A.C.Fonseca, D.R.Lehman T20 Measurements for 1H(d(pol), γ)3He and the P-Wave Component of the Nucleon-Nucleon Force NUCLEAR REACTIONS 1H(polarized d, γ), E=12.7-19.8 MeV; measured T20(θ); deduced sensitivity to P-wave component of NN-force. Compared measurements to 3-body calculations.
doi: 10.1103/PhysRevC.53.35
1996SC14 Phys.Rev.Lett. 76, 3088 (1996) G.J.Schmid, M.Viviani, B.J.Rice, R.M.Chasteler, M.A.Godwin, G.C.Kiang, L.L.Kiang, A.Kievsky, C.M.Laymon, R.M.Prior, R.Schiavilla, D.R.Tilley, H.R.Weller Effects of Non-Nucleonic Degrees of Freedom in the D(p(pol), γ)3He and p(d(pol), γ)3He Reactions NUCLEAR REACTIONS, ICPND 2H(polarized p, γ), 1H(polarized d, γ), E=80 keV; analyzed σ(θ), polarization observables, astrophysical S-factor data.
doi: 10.1103/PhysRevLett.76.3088
1996SC26 Nucl.Phys. A607, 139 (1996) G.J.Schmid, R.M.Chasteler, C.M.Laymon, H.R.Weller, E.F.Moore, C.R.Bybee, J.M.Drake, D.R.Tilley, G.Vavrina, P.M.Wallace Correction Factors for γ-Ray Relative Intensities in the 66Ga Radioisotope RADIOACTIVITY 66Ga(β+), (EC); measured γ spectra; deduced relative Iγ, detector efficiency, implications to 2H(p, γ) reaction astrophysical S-factor data.
doi: 10.1016/0375-9474(96)00214-X
1995PA24 Phys.Rev. C52, 252 (1995) W.E.Parker, M.B.Chadwick, F.S.Dietrich, J.E.Kammeraad, S.J.Luke, K.E.Sale, R.M.Chasteler, M.A.Godwin, L.H.Kramer, G.J.Schmid, H.R.Weller, A.K.Kerman Fluctuation Effects in Radiative Capture to Unstable Final States: A test via the 89Y(p(pol), γ) reaction at E(p) = 19.6 MeV NUCLEAR REACTIONS 89Y(polarized p, γ), E=19.6 MeV; measured σ(θ), analyzing power(θ) vs Eγ. Direct-semdirect Hauser-Feshbach analyses. NaI(T1) detector.
doi: 10.1103/PhysRevC.52.252
1995PR08 Nucl.Instrum.Methods Phys.Res. A355, 439 (1995) R.M.Prior, R.M.Chasteler, H.R.Weller A Polarimeter for Low-Energy Protons NUCLEAR REACTIONS 7Li(polarized p, γ), E ≤ 100 keV; measured analyzing power; deduced reaction suitability for low energy proton polarization measurements.
doi: 10.1016/0168-9002(94)01017-X
1995SC40 Phys.Rev. C52, R1732 (1995) G.J.Schmid, R.M.Chasteler, C.M.Laymon, H.R.Weller, R.M.Prior, D.R.Tilley Polarized Proton Capture by Deuterium and the 2H(p, γ)3He Astrophysical S Factor NUCLEAR REACTIONS, ICPND 2H(polarized p, γ), E=0-80 keV; measured Eγ, Iγ, σ(θ), analyzing power vs E; deduced astrophysical S-factor vs E.
doi: 10.1103/PhysRevC.52.R1732
1995TI07 Nucl.Phys. A595, 1 (1995) D.R.Tilley, H.R.Weller, C.M.Cheves, R.M.Chasteler Energy Levels of Light Nuclei A = 18-19 COMPILATION 18Be, 18,19B, 18,19C, 18,19N, 18,19O, 18,19F, 18,19Ne, 18,19Na; compiled, evaluated structure data.
doi: 10.1016/0375-9474(95)00338-1
1995WE11 Z.Phys. A352, 353 (1995) Comment on the 7Li(p, γ)8Be Reaction at Energies of Astrophysical Interest NUCLEAR REACTIONS, ICPND 7Li(p, γ), E ≤ 1.6 MeV; analyzed astrophysical S-factor vs E, other data; deduced p-wave strength related features.
doi: 10.1007/BF01299749
1994BA02 Phys.Rev. C49, 912 (1994) M.J.Balbes, J.C.Riley, G.Feldman, H.R.Weller, D.R.Tilley Polarized Deuteron Capture by 3He and 3H at and above the Fusion Resonance Region NUCLEAR REACTIONS 3He, 3H(polarized d, γ), E=0.4-8.6 MeV; measured Eγ, Iγ, σ(θ), vector, tensor analyzing power vs θ; deduced transition matrix elements, reaction mechanism. Resonating group model.
doi: 10.1103/PhysRevC.49.912
1994CH23 Phys.Rev.Lett. 72, 3949 (1994) R.M.Chasteler, H.R.Weller, D.R.Tilley, R.M.Prior Observation of Substantial p-Wave Capture Strength in the 7Li(p(pol), γ)8Be Reaction for E(p) = 80-0 keV and Implications for Astrophysical S Factors NUCLEAR REACTIONS, ICPND 7Li(polarized p, γ), E ≤ 80 keV; measured σ(θ), analyzing power vs θ; deduced implications for astrophysical S-factor.
doi: 10.1103/PhysRevLett.72.3949
1994CH70 Nucl.Instrum.Methods Phys.Res. A344, 429 (1994) A Portable 17.3 MeV Gamma-Ray Source NUCLEAR REACTIONS, ICPND 7Li(p, γ), E ≤ 80 keV; measured Eγ, Iγ; deduced γ yield, photon ion source possibilities.
doi: 10.1016/0168-9002(94)90093-0
1994GO17 Phys.Rev. C50, 1528 (1994) M.A.Godwin, E.Hayward, G.Feldman, L.H.Kramer, H.R.Weller, W.R.Dodge Isovector Giant Quadrupole Resonance Observed in 89Y(p(pol), γ)90Zr NUCLEAR REACTIONS 89Y(polarized p, γ), E=18.5-28.5 MeV; measured Eγ, Iγ(θ), analyzing power (θ=90°) vs Ep; deduced model parameters. 90Zr deduced giant quadrupole resonances, widths, E2 strength distribution features.
doi: 10.1103/PhysRevC.50.1528
1994WE18 At.Data Nucl.Data Tables 58, 219 (1994) H.R.Weller, R.M.Chasteler, B.S.Marks, R.G.Seyler, D.R.Lehman Angular Distribution Coefficients for (γ, X) Reactions with Circularly Polarized Photons and Polarized Targets and a Correction to Previous Tables
doi: 10.1006/adnd.1994.1028
1994WI08 Nucl.Phys. A577, 653 (1994) J.Z.Williams, G.Feldman, H.R.Weller, D.R.Tilley Radiative Capture of Polarized Deuterons by 6Li and the D-State of 8Be NUCLEAR REACTIONS 6Li(polarized d, γ), E=2-14 MeV; measured σ(E) vs θ, vector, tensor analyzing power vs θ, E; deduced transition matrix elements phases. 8Be deduced D-state probability. Direct capture, multi-channel resonating group model.
doi: 10.1016/0375-9474(94)90938-5
1993KR06 Phys.Lett. 304B, 208 (1993) L.H.Kramer, R.M.Chasteler, E.Hayward, R.M.Prior, D.R.Tilley, H.R.Weller Observation of p-Wave Capture Strength in the 2H(d(pol), γ)4He Reaction at E(d) = 80-0 KeV NUCLEAR REACTIONS 2H(polarized d, γ), E=80 keV; measured σ(θ), vector, tensor analyzing power vs θ; deduced p-wave capture dominance. Model comparison.
doi: 10.1016/0370-2693(93)90284-O
1993SA03 Phys.Rev. C47, 459 (1993) A.J.Sarty, K.G.R.Doss, G.Feldman, E.L.Hallin, R.E.Pywell, G.A.Retzlaff, D.M.Skopik, H.R.Weller, W.R.Dodge, J.W.Lightbody, Jr., J.S.O'Connell, C.C.Chang Measurement of the Reaction 3He(γ, pp)n and Its Relation to Three-Body Forces NUCLEAR REACTIONS 3He(γ, 2p), E=90-250 MeV bremsstrahlung; measured σ(θn, θp) vs neutron momentum; deduced two-pion-exchange, three-body absorption mechanisms role.
doi: 10.1103/PhysRevC.47.459
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