NSR Query Results
Output year order : Descending NSR database version of March 21, 2024. Search: Author = H.J.Karwowski Found 91 matches. 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
2020MU07 Phys.Rev. C 101, 055801 (2020) M.Munch, C.Matei, S.D.Pain, M.T.Febbraro, K.A.Chipps, H.J.Karwowski, C.Aa.Diget, A.Pappalardo, S.Chesnevskaya, G.L.Guardo, D.Walter, D.L.Balabanski, F.D.Becchetti, C.R.Brune, K.Y.Chae, J.Frost-Schenk, M.J.Kim, M.S.Kwag, M.La Cognata, D.Lattuada, R.G.Pizzone, G.G.Rapisarda, G.V.Turturica, C.A.Ur, Y.Xu Measurement of the 7Li(γ, t)4He ground-state cross section between Eγ = 4.4. and 10 MeV NUCLEAR REACTIONS 7Li(γ, t), E=4.4-10 MeV from High Intensity Gamma-ray Source (HIγS) at TUNL; measured E(t), I(t), Eα, Iα, Eγ and Iγ, αt-coin, ground state σ(E) using the SIDAR silicon detector array. 3H(α, γ), E(cm)=0-7 MeV; deduced astrophysical S-factor from R-matrix analysis. Comparison with model predictions, and with previous experimental results. Relevance to primordial Li problem and the mirror α-capture reactions.
doi: 10.1103/PhysRevC.101.055801
2019BA10 Phys.Rev. C 99, 025802 (2019) A.Banu, E.G.Meekins, J.A.Silano, H.J.Karwowski, S.Goriely Photoneutron reaction cross section measurements on 94Mo and 90Zr relevant to the p-process nucleosynthesis NUCLEAR REACTIONS 90Zr(γ, n), E=12-13.5 MeV; 94Mo(γ, n), E=9.5-13.5 MeV; measured Eγ, Iγ, E(n), I(n), and σ(E) using quasi-monochromatic, circularly polarized (aka unpolarized) high-intensity photon beam from HIγS-TUNL facility, 3He proportional counter array INVS for neutron detection, HPGe detector and thin plastic scintillator for γ detection; deduced γ-ray strength functions (γSF), and stellar reaction rates. Comparison with previous experimental results, and with Hauser-Feshbach statistical model calculations with D1M+QRPA E1 and M1 strengths, and with the GLO model. Relevance to p-process nucleosynthesis and impact on the photoneutron stellar reaction rates.
doi: 10.1103/PhysRevC.99.025802
2019GA11 Phys.Rev.Lett. 122, 192501 (2019) A.Gando, Y.Gando, T.Hachiya, M.Ha Minh, S.Hayashida, Y.Honda, K.Hosokawa, H.Ikeda, K.Inoue, K.Ishidoshiro, Y.Kamei, K.Kamizawa, T.Kinoshita, M.Koga, S.Matsuda, T.Mitsui, K.Nakamura, A.Ono, N.Ota, S.Otsuka, H.Ozaki, Y.Shibukawa, I.Shimizu, Y.Shirahata, J.Shirai, T.Sato, K.Soma, A.Suzuki, A.Takeuchi, K.Tamae, K.Ueshima, H.Watanabe, D.Chernyak, A.Kozlov, S.Obara, S.Yoshida, Y.Takemoto, S.Umehara, K.Fushimi, S.Hirata, B.E.Berger, B.K.Fujikawa, J.G.Learned, J.Maricic, L.A.Winslow, Y.Efremenko, H.J.Karwowski, D.M.Markoff, W.Tornow, T.O'Donnell, J.A.Detwiler, S.Enomoto, M.P.Decowski, J.Menendez, R.Dvornicky, F.Simkovic Precision Analysis of the 136Xe Two-Neutrino ββ Spectrum in KamLAND-Zen and Its Impact on the Quenching of Nuclear Matrix Elements RADIOACTIVITY 136Xe(2β-); measured decay products, Eβ, Iβ; deduced nuclear matrix elements.
doi: 10.1103/PhysRevLett.122.192501
2018SI29 Phys.Rev. C 98, 054609 (2018) Near-barrier photofission in 232Th and 238U NUCLEAR REACTIONS 232Th, 238U, Pb, 2H(polarized γ, F), E=4.3-6.0 MeV; measured neutron and γ spectra, photofission neutron angular distributions and polarization asymmetries, photofission neutron multiplicities, and photofission σ(E) using 3He proportional counters for neutron detection at HIγS-TUNL facility. Comparison with previous experimental σ(E) data, ENDF/B-VIII.0 evaluation and several model predictions.
doi: 10.1103/PhysRevC.98.054609
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
2016AS01 Nucl.Phys. A946, 171 (2016) K.Asakura, A.Gando, Y.Gando, T.Hachiya, S.Hayashida, H.Ikeda, K.Inoue, K.Ishidoshiro, T.Ishikawa, S.Ishio, M.Koga, S.Matsuda, T.Mitsui, D.Motoki, K.Nakamura, S.Obara, M.Otani, T.Oura, I.Shimizu, Y.Shirahata, J.Shirai, A.Suzuki, H.Tachibana, K.Tamae, K.Ueshima, H.Watanabe, B.D.Xu, H.Yoshida, A.Kozlov, Y.Takemoto, S.Yoshida, K.Fushimi, T.I.Banks, B.E.Berger, B.K.Fujikawa, T.O'Donnell, L.A.Winslow, Y.Efremenko, H.J.Karwowski, D.M.Markoff, W.Tornow, J.A.Detwiler, S.Enomoto, M.P.Decowski Search for double-beta decay of 136Xe to excited states of 136Ba with the KamLAND-Zen experiment
doi: 10.1016/j.nuclphysa.2015.11.011
2016GA30 Phys.Rev.Lett. 117, 082503 (2016) A.Gando, Y.Gando, T.Hachiya, A.Hayashi, S.Hayashida, H.Iked a, K.Inoue, K.Ishidoshiro, Y.Karino, M.Koga, S.Matsuda, T.Mitsui, K.Nakamura, S.Obara, T.Oura, H.Ozaki, I.Shimizu, Y.Shirahata, J.Shirai, A.Suzuki, T.Takai, K.Tamae, Y.Teraoka, K.Ueshima, H.Watanabe, A.Kozlov, Y.Takemoto, S.Yoshida, K.Fushimi, T.I.Banks, B.E.Berger, B.K.Fujikawa, T.O'Donnell, L.A.Winslow, Y.Efremenko, H.J.Karwowski, D.M.Markoff, W.Tornow, J.A.Detwiler, S.Enomoto, M.P.Decowski Search for Majorana Neutrinos Near the Inverted Mass Hierarchy Region with KamLAND-Zen RADIOACTIVITY 136Xe(2β-); measured decay products, Eγ, Iγ, Eβ, Iβ; deduced neutrinoless decay T1/2 limit. Comparison with available data.
doi: 10.1103/PhysRevLett.117.082503
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
2014AN13 Phys.Rev. C 90, 054315 (2014) C.T.Angell, R.Hajima, T.Hayakawa, T.Shizuma, H.J.Karwowski, J.Silano Validating resonance properties using nuclear resonance fluorescence NUCLEAR REACTIONS 27Al(polarized γ, γ'), E=2.6-3.2 MeV; measured Eγ, Iγ, integrated cross section for the 3.004-MeV level in 27Al at HIγS-TUNL facility; 27Al; deduced level spin, validation procedure of spectroscopic properties of a resonance.
doi: 10.1103/PhysRevC.90.054315
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
2013CS01 Acta Phys.Pol. B44, 643 (2013) L.Csige, D.M.Filipescu, J.Gulyas, M.Gunther, D.Habs, H.J.Karwowski, A.Krasznahorkay, G.C.Rich, P.G.Thirolf Photofission of 238U Induced by a Quasi-monochromatic, Compton Backscattered γ Beam NUCLEAR REACTIONS 238U(γ, F), E=4.7-6 MeV; measured fission products; deduced σ. Comparison with EMPIRE 3.1 calculations, available data.
doi: 10.5506/APhysPolB.44.643
2013CS03 Phys.Rev. C 87, 044321 (2013) L.Csige, D.M.Filipescu, T.Glodariu, J.Gulyas, M.M.Gunther, D.Habs, H.J.Karwowski, A.Krasznahorkay, G.C.Rich, M.Sin, L.Stroe, O.Tesileanu, P.G.Thirolf Exploring the multihumped fission barrier of 238U via sub-barrier photofission NUCLEAR REACTIONS 238U(γ, F), E=4.7-6.0 MeV; measured Eγ, Iγ, photofission σ(E) at the HIγS facility. 238U; deduced triple-humped fission barrier parameters using EMPIRE-3.1 computer code calculations. Comparison with previous experimental studies.
doi: 10.1103/PhysRevC.87.044321
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
2012AN13 Phys.Rev. C 86, 051302 (2012); Erratum Phys.Rev. C 91, 039901 (2015) C.T.Angell, S.L.Hammond, H.J.Karwowski, J.H.Kelley, M.Krticka, E.Kwan, A.Makinaga, G.Rusev Evidence for radiative coupling of the pygmy dipole resonance to excited states NUCLEAR REACTIONS 142Nd(γ, n), E=9.86-13.3 MeV; 142Nd(polarized γ, γ'), E=4.2-9.7 MeV; measured Eγ, Iγ, branching ratio, σ(E) using High Intensity γ-ray Source (HIγS) at TUNL for (γ, γ'), and quasimonoenergetic γ-ray source at Tsukuba; deduced two distinct PDR peaks. Comparison with statistical-model calculations. Violation of Brink hypothesis.
doi: 10.1103/PhysRevC.86.051302
2012AR01 Phys.Rev. C 85, 044605 (2012) C.W.Arnold, T.B.Clegg, C.Iliadis, H.J.Karwowski, G.C.Rich, J.R.Tompkins, C.R.Howell Cross-section measurement of 9Be(γ, n)8Be and implications for α+α+n → 9Be in the r process NUCLEAR REACTIONS 9Be(γ, n)8Be, E=1.5-5.2 MeV; measured neutron spectra, Eγ, σ(E) using HIγS facility at TUNL. 9Be; deduced resonance energies, neutron and gamma widths, B(E1), B(M1), neutron branching ratios. Deduced astrophysical reaction rate for 4He(αn, γ)9Be reaction for r-process nucleosynthesis sites. Comparison with previous studies using (γ, n) and (e, e') reactions.
doi: 10.1103/PhysRevC.85.044605
2012HA12 Phys.Rev. C 85, 044302 (2012) S.L.Hammond, A.S.Adekola, C.T.Angell, H.J.Karwowski, E.Kwan, G.Rusev, A.P.Tonchev, W.Tornow, C.R.Howell, J.H.Kelley Dipole response of 238U to polarized photons below the neutron separation energy NUCLEAR REACTIONS 238U(polarized γ, γ'), E=2.0-6.2 MeV; measured Eγ, Iγ, γ(θ), γ(linear pol), integrated cross sections using HIγS facility at TUNL. 238U; deduced levels, J, π, multipolarity, widths, branching ratios, B(M1), B(E1), total γ-ray interaction cross section for E1. Systematics of E1 and M1 strengths for 232Th, 236,238U. Comparison with QRPA calculations.
doi: 10.1103/PhysRevC.85.044302
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
2011AD02 Phys.Rev. C 83, 034615 (2011) A.S.Adekola, C.T.Angell, S.L.Hammond, A.Hill, C.R.Howell, H.J.Karwowski, J.H.Kelley, E.Kwan Discovery of low-lying E1 and M1 strengths in 232Th NUCLEAR REACTIONS 232Th(γ, γ'), E=2-4 MeV; measured Eγ, Iγ, γγ(θ), integrated σ using HIγS facility; deduced widths. 232Th; deduced levels, J, π, multipolarity, B(M1), B(E1), branching ratios. Comparison of scissors mode summed B(M1) strengths with those in 232Th, 235,236,238U, and with predictions of quasiparticle random-phase approximation (QRPA).
doi: 10.1103/PhysRevC.83.034615
2011KW01 Phys.Rev. C 83, 041601 (2011) E.Kwan, G.Rusev, A.S.Adekola, F.Donau, S.L.Hammond, C.R.Howell, H.J.Karwowski, J.H.Kelley, R.S.Pedroni, R.Raut, A.P.Tonchev, W.Tornow Discrete deexcitations in 235U below 3 MeV from nuclear resonance fluorescence NUCLEAR REACTIONS 235U(γ, γ'), E=1.6-3.0 MeV; measured Eγ, Iγ, γγ-coin, integrated cross sections, and widths using HIγS facility. 235U; deduced levels, J, π, branching ratios. Comparison with quasiparticle random-phase approximation in deformed basis for dipole transitions.
doi: 10.1103/PhysRevC.83.041601
2011TO06 Phys.Lett. B 702, 121 (2011) W.Tornow, H.J.Karwowski, J.H.Kelley, R.Raut, G.Rusev, S.C.Stave, A.P.Tonchev, A.Deltuva, A.C.Fonseca, L.E.Marcucci, M.Viviani, A.Kievsky, J.Golak, R.Skibinski, H.Witala, R.Schiavilla Two-body photodisintegration of 3He between 7 and 16 MeV NUCLEAR REACTIONS 3He(γ, p), E=7-16 MeV; measured reaction products, Ep, Ip; deduced σ. Comparison with theoretical calculations and experimental data.
doi: 10.1016/j.physletb.2011.06.080
2011TO10 Phys.Rev. C 84, 044331 (2011) J.R.Tompkins, C.W.Arnold, H.J.Karwowski, G.C.Rich, L.G.Sobotka, C.R.Howell Measurements of the 48Ca(γ, n) reaction NUCLEAR REACTIONS 48Ca(polarized γ, n), E=9.5-15.3 MeV; measured E(n), I(n), Eγ, excitation functions, cross section; deduced B(M1) for 10.23 MeV resonance. High-intensity γ-ray source at TUNL. Comparison with previous studies, and with extended random-phase approximation calculations.
doi: 10.1103/PhysRevC.84.044331
2010DA18 Phys.Rev. C 82, 034002 (2010) T.V.Daniels, C.W.Arnold, J.M.Cesaratto, T.B.Clegg, A.H.Couture, H.J.Karwowski, T.Katabuchi Spin-correlation coefficients and phase-shift analysis for p+3He elastic scattering NUCLEAR REACTIONS 3He(polarized p, p), E=2-6 MeV; measured Ep, Ip, analyzing powers; deduced phase shifts, spin-correlation coefficients using polarized 3He target. Comparison with theoretical calculations using realistic nucleon-nucleon potential models.
doi: 10.1103/PhysRevC.82.034002
2009HU09 Phys.Rev. C 80, 014603 (2009) A.Hutcheson, C.Angell, J.A.Becker, A.S.Crowell, D.Dashdorj, B.Fallin, N.Fotiades, C.R.Howell, H.J.Karwowski, T.Kawano, J.H.Kelley, E.Kwan, R.A.Macri, R.O.Nelson, R.S.Pedroni, A.P.Tonchev, W.Tornow Cross sections for 238U(n, n'γ) and 238U(n, 2nγ) reactions at incident neutron energies between 5 and 14 MeV NUCLEAR REACTIONS 238U(n, n'γ), (n, 2nγ), E=5-14 MeV; measured Eγ, yields, σ and excitation functions. Comparison with existing data and calculations using the GNASH and TALYS Hauser-Feshbach statistical-model codes.
doi: 10.1103/PhysRevC.80.014603
2008EL09 Phys.Rev. C 78, 064303 (2008); Erratum Phys.Rev. C 88, 029903 (2013) E.Elhami, J.N.Orce, M.Scheck, S.Mukhopadhyay, S.N.Choudry, M.T.McEllistrem, S.W.Yates, C.Angell, M.Boswell, B.Fallin, C.R.Howell, A.Hutcheson, H.J.Karwowski, J.H.Kelley, Y.Parpottas, A.P.Tonchev, W.Tornow Experimental study of the low-lying structure of 94Zr with the (n, n'γ) reaction NUCLEAR REACTIONS 94Zr(n, n'γ), E=2.5-4.0 MeV; measured Eγ, Iγ, γγ-coin, angular distributions, half-lives by Doppler shift attenuation; deduced levels, J, π, multipolarities, mixing ratios, B(M1), B(E2).90,92,96,98,100,102Zr, 96Ru, 94,96Mo; systematics. Comparison with IBA and shell model calculations.
doi: 10.1103/PhysRevC.78.064303
2008TO06 Phys.Rev. C 77, 054610 (2008) A.P.Tonchev, C.T.Angell, M.Boswell, A.S.Crowell, B.Fallin, S.Hammond, C.R.Howell, A.Hutcheson, H.J.Karwowski, J.H.Kelley, R.S.Pedroni, W.Tornow, J.A.Becker, D.Dashdorj, J.Kenneally, R.A.Macri, M.A.Stoyer, C.Y.Wu, E.Bond, M.B.Chadwick, J.Fitzpatrick, T.Kawano, R.S.Rundberg, A.Slemmons, D.J.Vieira, J.B.Wilhelmy Measurement of the 241Am(n, 2n) reaction cross section from 7.6 MeV to 14.5 MeV NUCLEAR REACTIONS 241Am(n, 2n), E=7.6-14.5 MeV; measured Eγ, Iγ, neutron time-of-flight spectra, σ, excitation functions. Comparison with evaluated data in ENDF/B-VII and JENDL-3.3.
doi: 10.1103/PhysRevC.77.054610
2006FI06 Phys.Rev. C 74, 034001 (2006) B.M.Fisher, C.R.Brune, H.J.Karwowski, D.S.Leonard, E.J.Ludwig, T.C.Black, M.Viviani, A.Kievsky, S.Rosati Proton-3He elastic scattering at low energies NUCLEAR REACTIONS 3He(p, p), (polarized p, p), E=0.99, 1.59, 2.24, 3.11, 4.02 MeV; measured σ(θ), Ay(θ). Four-body variational calculations with realistic two- and three-body interactions.
doi: 10.1103/PhysRevC.74.034001
2006LE19 Phys.Rev. C 73, 045801 (2006) D.S.Leonard, H.J.Karwowski, C.R.Brune, B.M.Fisher, E.J.Ludwig Precision measurements of 2H(d, p)3H and 2H(d, n)3He total cross sections at Big Bang nucleosynthesis energies NUCLEAR REACTIONS 2H(d, p), (d, n), E=120-650 keV; measured Ep, En, σ(E, θ); deduced integrated σ. Astrophysical implications discussed.
doi: 10.1103/PhysRevC.73.045801
2004BR08 Phys.Rev. C 69, 024608 (2004) B.Braizinha, C.R.Brune, A.M.Eiro, B.M.Fisher, H.J.Karwowski, D.S.Leonard, E.J.Ludwig, F.D.Santos, I.J.Thompson Resonant and direct components in the 3He(d, p)4He reaction at low energies NUCLEAR REACTIONS 3He(polarized d, p), E=0.52, 0.89, 1.49 MeV; measured σ(θ=0°), analyzing power; deduced scattering matrix elements.
doi: 10.1103/PhysRevC.69.024608
2003KE05 Phys.Rev. C 67, 044604 (2003) N.Keeley, T.L.Drummer, E.E.Bartosz, C.R.Brune, P.D.Cathers, M.Fauerbach, H.J.Karwowski, K.W.Kemper, B.Kozlowska, E.J.Ludwig, F.Marechal, A.J.Mendez, E.G.Myers, D.Robson, K.Rusek, K.D.Veal Multistep processes in the 12C(6Li, d) stripping reaction NUCLEAR REACTIONS 12C(polarized 6Li, d), E=34, 50 MeV; measured σ(E, θ), analyzing powers; deduced multistep transfer contributions. Coupled reaction channels calculations.
doi: 10.1103/PhysRevC.67.044604
2002FL03 Phys.Rev. C 66, 057601 (2002) K.A.Fletcher, C.R.Brune, B.M.Fisher, R.P.Fitzgerald, H.J.Karwowski, D.S.Leonard, E.J.Ludwig, R.C.Runkle, M.H.Wood, W.H.Geist, K.D.Veal, G.M.Hale Kyy'(O°) for 3He(d, p)4He near the Jπ=3/2+ resonance NUCLEAR REACTIONS 3He(polarized d, p), E=520, 890, 1490 keV; measured polarization transfer coefficient. 5Li deduced resonance.
doi: 10.1103/PhysRevC.66.057601
2002WO05 Phys.Rev. C65, 034002 (2002) M.H.Wood, C.R.Brune, B.M.Fisher, H.J.Karwowski, D.S.Leonard, E.J.Ludwig, A.Kievsky, S.Rosati, M.Viviani Low-Energy p-d Scattering: High-Precision data, comparisons with theory, and phase-shift analyses NUCLEAR REACTIONS 2H(polarized p, p), 1H(polarized d, d), E(cm)=667 keV; measured σ(θ), Ay(θ), other analyzing powers; deduced phase shift parameters. Comparison with NN and 3N model predictions.
doi: 10.1103/PhysRevC.65.034002
2001BR12 Phys.Rev. C63, 044013 (2001) C.R.Brune, W.H.Geist, H.J.Karwowski, E.J.Ludwig, K.D.Veal, M.H.Wood, A.Kievsky, S.Rosati, M.Viviani Proton-Deuteron Elastic Scattering at Low Energies NUCLEAR REACTIONS 2H(polarized p, p), E=431.3-2000 keV; measured σ(θ), analyzing power vector and tensor components. Comparison with calculations using hyperspherical harmonic basis and different nuclear potentials.
doi: 10.1103/PhysRevC.63.044013
2001BR22 Nucl.Phys. A688, 263c (2001) C.R.Brune, J.Daly, R.Detwiler, B.Fisher, W.H.Geist, J.Gorres, H.J.Karwowski, R.W.Kavanagh, D.S.Leonard, P.Tischhauser, K.D.Veal, M.Wiescher Using Sub-Coulomb α Transfer Reactions to Study the Low-Energy 12C(α, γ)16O S-Factor NUCLEAR REACTIONS 12C(6Li, d), (7Li, t), E=2.7-7.0 MeV; measured Eγ, σ(θ), reduced α widths. 12C(α, γ), E=0-5 MeV; calculated E1 and E2 S-factors following R-matrix fits.
doi: 10.1016/S0375-9474(01)00711-4
2001KI03 Phys.Rev. C63, 024005 (2001) A.Kievsky, M.H.Wood, C.R.Brune, B.M.Fisher, H.J.Karwowski, D.S.Leonard, E.J.Ludwig, S.Rosati, M.Viviani Evidence for Three Nucleon Force Effects in p-d Elastic Scattering NUCLEAR REACTIONS 2H(p, p), E=1 MeV; measured σ(θ); deduced contribution from three-nucleon force. Comparisons with model predictions.
doi: 10.1103/PhysRevC.63.024005
2001KI22 Nucl.Phys. A689, 349c (2001) A.Kievsky, M.H.Wood, C.R.Brune, B.M.Fisher, H.J.Karwowski, D.S.Leonard, E.J.Ludwig, S.Rosati, M.Viviani χ2 Analysis of p-d Differential Cross Sections at Low Energies NUCLEAR REACTIONS 1H(d, d), E=1 MeV; measured σ(θ); deduced model parameters.
doi: 10.1016/S0375-9474(01)00852-1
2001WO06 Nucl.Phys. A684, 549c (2001) M.H.Wood, C.R.Brune, B.M.Fisher, H.J.Karwowski, A.Kievsky, D.S.Leonard, E.J.Ludwig, S.Rosati, M.Viviani Low Energy P-D Elastic Scattering and the ' Ay Puzzle ' NUCLEAR REACTIONS 2H(polarized p, p), E(cm)=667 keV; measured σ(θ), Ay(θ), tensor analyzing powers. Comparisons with model predictions.
doi: 10.1016/S0375-9474(01)00390-6
2000CR01 Phys.Rev. C61, 034006 (2000) B.J.Crowe III, C.R.Brune, W.H.Geist, H.J.Karwowski, E.J.Ludwig, K.D.Veal, A.C.Fonseca, G.M.Hale, K.A.Fletcher Analyzing Powers for 2H(d(pol), d)2H at Deuteron Energies of 3.0, 4.75, and 6.0 MeV NUCLEAR REACTIONS 2H(polarized d, d), E=3.0, 4.75, 6.0 MeV; measured tensor analyzing powers vs θ; deduced nucleon-nucleon p-wave contributions. R matrix parameterization, microscopic four-body calculations.
doi: 10.1103/PhysRevC.61.034006
2000FL08 Nucl.Instrum.Methods Phys.Res. A455, 620 (2000) K.A.Fletcher, W.H.Geist, C.R.Brune, B.M.Fisher, R.P.Fitzgerald, H.J.Karwowski, D.E.Kruse, D.S.Leonard, E.J.Ludwig, R.C.Runkle, K.D.Veal, M.H.Wood A Proton Polarimeter for 3He(d, p)4He Polarization Transfer Studies NUCLEAR REACTIONS 3He(d, p), E=430 keV; measured proton polarization, effective analyzing power vs Ep. Comparison with Monte Carlo simulation.
doi: 10.1016/S0168-9002(00)00569-6
1999BL26 Phys.Lett. 471B, 103 (1999) T.C.Black, H.J.Karwowski, E.J.Ludwig, A.Kievsky, S.Rosati, M.Viviani Determination of Proton-Deuteron Scattering Lengths NUCLEAR REACTIONS 2H(p, p), E(cm)=0.163-2 MeV; calculated σ(θ), doublet and quartet S-wave effective range function, phase shifts; deduced singularity in doublet S-wave effective range function. Three nucleon interaction.
doi: 10.1016/S0370-2693(99)01366-0
1999GE19 Phys.Rev. C60, 054003 (1999); Erratum Phys.Rev. C67, 059904 (2003) W.H.Geist, C.R.Brune, H.J.Karwowski, E.J.Ludwig, K.D.Veal, G.M.Hale The 3He(d(pol), p)4He Reaction at Low Energies NUCLEAR REACTIONS 3H(polarized d, p), E=60-641 keV; measured σ(E, θ), Ay(E, θ), Azz(E, θ), Ayy(E, θ), Axz(E, θ); deduced low-energy S-factor, electron screening potential. 5Li deduced levels, J, π. R-matrix analysis.
doi: 10.1103/PhysRevC.60.054003
1999KA46 Acta Phys.Pol. B30, 1479 (1999) H.J.Karwowski, C.R.Brune, W.H.Geist, E.J.Ludwig, K.D.Veal, M.H.Wood, A.Kievsky, S.Rosati, M.Viviani, T.C.Black New Physics in p-d Elastic Scattering at Low Energies NUCLEAR REACTIONS 2H(polarized p, p), E(cm)=0.163-2 MeV; 1H(polarized d, d), E(cm)=0.163-2 MeV; measured σ, vector and tensor analyzing powers; deduced NN potential features, role of 3-body force. Pair-Correlated Hyperspherical Harmonic Calculations. Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC0801. 1999VE11 Phys.Rev. C60, 064003 (1999) K.D.Veal, C.R.Brune, W.H.Geist, H.J.Karwowski, E.J.Ludwig, E.E.Bartosz, P.D.Cathers, T.L.Drummer, K.W.Kemper, A.M.Eiro, F.D.Santos, B.Kozlowska, H.J.Maier, I.J.Thompson Determination of the Asymptotic D- to S-State Ratio for 6Li via (6Li(pol), d) Transfer Reactions NUCLEAR REACTIONS 40Ca, 58Ni(polarized 6Li, d), E=34 MeV; measured deuteron spectra, σ(E, θ), Ay(θ), tensor analyzing powers. 6Li deduced asymptotic D- to S-state ratio. DWBA analysis.
doi: 10.1103/PhysRevC.60.064003
1998BL05 Nucl.Phys. A631, 680c (1998) T.-C.Black, H.-J.Karwowski, E.-J.Ludwig, A.Kievsky, S.Rosati, M.Viviani An Energy-Dependent Phase Shift Analysis of Low-Energy Proton-Deuteron Elastic Scattering
doi: 10.1016/S0375-9474(98)00090-6
1998BR10 Phys.Rev. C57, 3437 (1998) C.R.Brune, W.H.Geist, H.J.Karwowski, E.J.Ludwig, K.D.Veal 9Be(p(pol), d)8Be and 9Be(p(pol), α)6Li Reactions at Low Energies NUCLEAR REACTIONS 9Be(polarized p, d), (polarized p, α), E=77-321 keV; measured σ(θ), A(y)(θ); deduced reaction mechanism. R-matrix, DWBA analyses. Implications for stellar reaction rates discussed.
doi: 10.1103/PhysRevC.57.3437
1998BR11 Phys.Lett. 428B, 13 (1998) C.R.Brune, W.H.Geist, H.J.Karwowski, E.J.Ludwig, K.D.Veal, M.H.Wood, A.Kievsky, S.Rosati, M.Viviani Possible Three-Nucleon Force Effects in D-P Scattering at Low Energies NUCLEAR REACTIONS 2H(polarized p, p), E(cm)=432 keV; measured A(y)(θ), iT11(θ); deduced possible three-nucleon force effects.
doi: 10.1016/S0370-2693(98)00370-0
1998VE03 Phys.Rev.Lett. 81, 1187 (1998) K.D.Veal, C.R.Brune, W.H.Geist, H.J.Karwowski, E.J.Ludwig, A.J.Mendez, E.E.Bartosz, P.D.Cathers, T.L.Drummer, K.W.Kemper, A.M.Eiro, F.D.Santos, B.Kozlowska, H.J.Maier, I.J.Thompson Deformation Effects in 6Li NUCLEAR REACTIONS 58Ni(polarized 6Li, d), E=34 MeV; analyzed σ(θ), A(y)(θ), A(zz)(θ), A(xz)(θ). 6Li deduced asymptototic D- to S-state ratio. DWBA analysis.
doi: 10.1103/PhysRevLett.81.1187
1997BR37 Nucl.Instrum.Methods Phys.Res. A389, 421 (1997) C.R.Brune, H.J.Karwowski, E.J.Ludwig Determination of Low-Energy Proton Polarization Via the 6Li(p(pol), 3He)4He Reaction NUCLEAR REACTIONS 6Li(polarized p, 3He), E=250-460 MeV; measured A(y)(θ). 4He(polarized p, p), E=6 MeV; measured A(y); deduced beam polarization.
doi: 10.1016/S0168-9002(97)00340-9
1997KI17 Phys.Lett. 406B, 292 (1997) A.Kievsky, S.Rosati, M.Viviani, C.R.Brune, H.J.Karwowski, E.J.Ludwig, M.H.Wood The Three-Nucleon System Near the N-d Threshold NUCLEAR REACTIONS 1H(polarized d, d), E(cm)=432 keV; measured tensor analyzing powers vs θ; deduced scattering wave functions, three-nucleon properties.
doi: 10.1016/S0370-2693(97)00691-6
1997MA08 Phys.Rev. C55, 588 (1997) L.Ma, H.J.Karwowski, C.R.Brune, Z.Ayer, T.C.Black, J.C.Blackmon, E.J.Ludwig, M.Viviani, A.Kievsky, R.Schiavilla Measurements of 1H(d(pol), γ)3He and 2H(p(pol), γ)3He at Very Low Energies NUCLEAR REACTIONS 1H(polarized d, γ), E(cm)=40-110 keV; 2H(polarized p, γ), E(cm)=70-210 keV; measured σ(θ), analyzing powers vs θ; deduced thermonuclear reaction rate.
doi: 10.1103/PhysRevC.55.588
1995AY03 Phys.Rev. C52, 2851 (1995) Z.Ayer, H.J.Karwowski, B.Kozlowska, E.J.Ludwig Determination of the Asymptotic D- to S-State Ratio for 3He via (d(pol), 3He) Reactions NUCLEAR REACTIONS 93Nb(polarized d, 3He), E=12 MeV; 63Cu(polarized d, 3He), E=8 MeV; 89Y(polarized d, 3He), E=10.5 MeV; 93Nb(polarized d, d), E=12 MeV; measured σ(θ), tensor analyzing powers vs θ. 3He deduced D-state parameter. Finite-range DWBA analysis. Enriched targets.
doi: 10.1103/PhysRevC.52.2851
1995GE16 Nucl.Instrum.Methods Phys.Res. A365, 36 (1995) W.Geist, Z.Ayer, A.C.Hird, H.J.Karwowski, E.J.Ludwig A Deuteron Tensor Polarimeter for Low-Energy Experiments NUCLEAR REACTIONS 3He(polarized d, p), E=121-311 keV; measured tensor analyzing power vs θ; deduced polarimeter calibration.
doi: 10.1016/0168-9002(95)00456-4
1994FL03 Phys.Rev. C49, 2305 (1994) K.A.Fletcher, Z.Ayer, T.C.Black, R.K.Das, H.J.Karwowski, E.J.Ludwig, G.M.Hale Tensor Analyzing Power for 2H(d, p)3H and 2H(d, n)3He at Deuteron Energies of 25, 40, 60, and 80 keV NUCLEAR REACTIONS 2H(polarized d, p), (polarized d, n), E=25-80 keV; measured σ(θ), tensor analyzing power vs θ; deduced implications for neutron-lean fusion reaction, entrance channel quintent S-state role.
doi: 10.1103/PhysRevC.49.2305
1994KO29 Phys.Rev. C50, 2695 (1994) B.Kozlowska, Z.Ayer, R.K.Das, H.J.Karwowski, E.J.Ludwig Determination of the Asymptotic D- to S-State Ratio of the Triton from Sub-Coulomb (d(pol), t) Reactions NUCLEAR REACTIONS 119Sn(polarized d, t), E=5.25 MeV; 149Sm(polarized d, t), E=6 MeV; 206Pb(polarized d, t), E=10 MeV; measured tensor analyzing power vs θ. 3H deduced asymptotic D- to S-state ratio. Finite-range DWBA analysis.
doi: 10.1103/PhysRevC.50.2695
1993FL06 Nucl.Instrum.Methods Phys.Res. A329, 197 (1993) K.A.Fletcher, T.C.Black, H.J.Karwowski, E.J.Ludwig, Y.Tagishi A Deuteron Tensor Polarimeter for Energies Below 90 keV NUCLEAR REACTIONS 2H(polarized d, p), E=20-90 keV; measured analyzing power at θ=10°; deduced deuteron tensor polarimeter characteristics.
doi: 10.1016/0168-9002(93)90936-C
1993PI14 Phys.Rev. C48, 2763 (1993) M.A.Pickar, A.D.Bacher, M.Hugi, H.O.Meyer, R.E.Pollock, G.T.Emery, H.J.Karwowski, J.R.Hall, M.Fatyga Near-Threshold Proton-Induced Neutral Pion Production from 12C NUCLEAR REACTIONS 12C(polarized p, π0), E=146.87 MeV; measured σ(θ), analyzing power vs (θ), σ. 12C(p, π0), (p, π+), E ≤ 200 MeV; compiled σ; deduced p-wave strengths.
doi: 10.1103/PhysRevC.48.2763
1992BO14 Phys.Rev. C45, 2824 (1992) J.E.Bowsher, T.B.Clegg, H.J.Karwowski, E.J.Ludwig, W.J.Thompson, J.A.Tostevin Effects of 6Li Excitation in 64Zn(d(pol), 6Li)60Ni at Low Energies NUCLEAR REACTIONS 64Zn(polarized d, 6Li), E=16.4 MeV; measured σ(θ), analyzing power vs θ; deduced 6Li levels role in reaction mechanism, model parameters. Vector, tensor polarized beam. Finite-range, coupled-channel Born approximation analysis.
doi: 10.1103/PhysRevC.45.2824
1992DA01 Phys.Rev.Lett. 68, 1112 (1992) R.K.Das, T.B.Clegg, H.J.Karwowski, E.J.Ludwig Precise Determination of Triton D-State Parameters Using Transfer Reactions at Sub-Coulomb Energies NUCLEAR REACTIONS 95Mo(polarized d, t), E=7 MeV; 119Sn(polarized d, t), E=6.7 MeV; 149Sm(polarized d, t), E=8 MeV; measured σ(θ), tensor analyzing power vs θ. 3H deduced D-state parameters. Exact finite-range DWBA.
doi: 10.1103/PhysRevLett.68.1112
1992LU04 Phys.Rev.Lett. 69, 2448 (1992) E.J.Ludwig, R.K.Das, T.B.Clegg, H.J.Karwowski Ludwig et al. Reply:
doi: 10.1103/PhysRevLett.69.2448
1992WI13 Nucl.Phys. A549, 223 (1992) J.F.Wilkerson, T.M.Mooney, R.E.Fauber, T.B.Clegg, H.J.Karwowski, E.J.Ludwig, W.J.Thompson Isospin-Nonconserving Particle Decays in Light Nuclei NUCLEAR REACTIONS 12C, 16O, 20Ne, 24Mg, 28Si, 32S, 36Ar(polarized p, p), E ≈ resonance; 23Na, 31P(polarized p, p), (polarized p, α), 24Mg, 28Si(α, α), 20Ne(polarized p, p), E=6.4-7.7 MeV; measured σ(θ, E), analyzing power vs E, θ; deduced σ(E). 13N, 17F, 24Na, 25Al, 29P, 33S, 37K, 24Mg, 32S, 28Si deduced resonance parameters, isospin-nonconservation probabilities. Enriched targets, ion-implanted targets, polarized and unpolarized beams.
doi: 10.1016/0375-9474(92)90041-H
1991BH02 Nucl.Phys. A526, 36 (1991) C.M.Bhat, E.J.Ludwig, T.B.Clegg, H.J.Karwowski A Determination of the Asymptotic D- to S-State Ratio for 3He NUCLEAR REACTIONS 32S(polarized d, 3He), E=16 MeV; measured σ(θ), tensor analyzing power vs θ. 3He deduced D-state. Finite-range DWBA analysis.
doi: 10.1016/0375-9474(91)90296-I
1990LU10 J.Phys.(Paris), Colloq.C-6, 439 (1990) E.J.Ludwig, C.M.Bhat, T.B.Clegg, E.R.Crosson, H.J.Karwowski, G.Graw, P.Schiemenz, R.Hertenberger, H.Kader, D.Hofer, M.Bisenberger, A.M.Eiro, F.D.Santos D-State Parameter Determinations for 3He and 4He NUCLEAR REACTIONS 32S(polarized d, 3He), E=16 MeV; 58Ni(polarized d, α), E=22 MeV; measured σ(θ), analyzing power vs θ. 3,4He deduced asymptotic D- to S-state ratio, D2 parameter.
1989AB17 Nucl.Instrum.Methods Phys.Res. A284, 409 (1989) D.J.Abbott, H.J.Karwowski, T.B.Clegg, E.J.Ludwig A Deuteron Polarimeter for Polarization Transfer Experiments NUCLEAR REACTIONS 3He(polarized d, p), E=5-12 MeV; measured vector, tensor analyzing powers vs E. Deuteron polarimeter calibration.
doi: 10.1016/0168-9002(89)90310-0
1989PI06 Phys.Rev. C39, 1679 (1989) W.K.Pitts, H.O.Meyer, L.C.Bland, J.D.Brown, R.C.Byrd, M.Hugi, H.J.Karwowski, P.Schwandt, A.Sinha, J.Sowinski, I.J.van Heerden 2H(d(pol), γ)4He Reaction at E(d) = 95 MeV NUCLEAR REACTIONS 2H(polarized d, γ), E=95 MeV; measured σ(θ), vector, tensor analyzing power vs θ.
doi: 10.1103/PhysRevC.39.1679
1989SK04 Phys.Rev. C40, 1279 (1989) W.Skulski, M.Fatyga, H.J.Karwowski, K.Kwiatkowski, V.E.Viola, Jr., K.Hicks, R.Ristinen Linear Momentum Transfer in the Reaction of 64-269 MeV 3He with 238U NUCLEAR REACTIONS 238U(3He, F), E=64-269 MeV; measured fission (fragment)(light particle)-coin; deduced linear momentum transfer, missing momentum.
doi: 10.1103/PhysRevC.40.1279
1988BH02 Phys.Rev. C37, 1358 (1988) C.M.Bhat, T.B.Clegg, H.J.Karwowski, E.J.Ludwig D-State Amplitudes of Three-Nucleon Systems using Single-Nucleon Transfer Reactions NUCLEAR REACTIONS 31P(polarized d, 3He), 31P(polarized d, t), E ≈ 16 MeV; measured absolute σ(θ), tensor analyzing power vs θ. 3He, 3H deduced D-state amplitudes. Finite-range DWBA analysis. Enriched target.
doi: 10.1103/PhysRevC.37.1358
1988BH09 Phys.Rev. C38, 1537 (1988) C.M.Bhat, J.E.Bowsher, T.B.Clegg, H.J.Karwowski, E.J.Ludwig, B.A.Brown Single-Nucleon Pickup Spectroscopic Factors for Levels in 30Si and 30P and the D State of Three-Nucleon Systems NUCLEAR REACTIONS 31P(polarized d, 3He), (polarized d, t), (polarized d, d), E=16 MeV; measured σ(θ), vector, tensor analyzing powers vs θ; deduced model parameters. 30Si, 30P levels deduced spectroscopic factors.
doi: 10.1103/PhysRevC.38.1537
1988PI01 Phys.Rev. C37, 1 (1988) W.K.Pitts, H.O.Meyer, L.C.Bland, J.D.Brown, R.C.Byrd, M.Hugi, H.J.Karwowski, P.Schwandt, A.Sinha, J.Sowinski, I.J.van Heerden, A.Arriaga, F.D.Santos 1H(d(pol), γ)3He Reaction at E(d) = 95 MeV NUCLEAR REACTIONS, MECPD 1H(polarized d, γ), E=95 MeV; measured σ(θ), analyzing power vs θ. 3He deduced D- to S- state asymptotic normalization ratio.
doi: 10.1103/PhysRevC.37.1
1987FA01 Phys.Rev. C35, 568 (1987) M.Fatyga, H.J.Karwowski, K.Kwiatkowski, L.Nowicki, V.E.Viola, K.Hicks Linear Momentum Transfer and Light Particle Emission in the E/A = 25 MeV 6Li + 238U Reaction NUCLEAR REACTIONS 238U(6Li, pF), (6Li, dF), (6Li, tF), (6Li, 3HeF), (6Li, αF), E=150 MeV; measured fission fragment(light particle)-coin, σ(fragment θ, mass) vs linear momentum transfer; deduced complete fussion σ upper limit. Position sensitive multi-wire chamber, surface barrier detector.
doi: 10.1103/PhysRevC.35.568
1987FA03 Phys.Lett. 185B, 321 (1987) M.Fatyga, R.C.Byrd, K.Kwiatkowski, W.G.Wilson, L.W.Woo, V.E.Viola, Jr., H.J.Karwowski, J.Jastrzebski, W.Skulski Source Properties of Intermediate Mass Fragments Emitted in the 270 MeV 3He + 232Th Reaction NUCLEAR REACTIONS 232Th(3He, X), (3He, F), E=270 MeV; measured fission probability following intermediate mass fragmentation; deduced reaction mechanism. ΔE-E telescopes.
doi: 10.1016/0370-2693(87)91007-0
1987PI01 Phys.Rev. C35, 37 (1987) M.A.Pickar, H.J.Karwowski, J.D.Brown, J.R.Hall, M.Hugi, R.E.Pollock, V.R.Cupps, M.Fatyga, A.D.Bacher Proton Radiative Capture by Deuterium between 100 and 200 MeV NUCLEAR REACTIONS, MECPD 2H(polarized p, γ), E=100-200 MeV; measured σ(θ), A(θ); deduced quasideuteron role. Coincidence measurement. Quasideuteron model calculations.
doi: 10.1103/PhysRevC.35.37
1986JA09 Phys.Rev. C34, 60 (1986) J.Jastrzebski, P.P.Singh, T.Mroz, S.E.Vigdor, M.Fatyga, H.J.Karwowski Interaction of 5-50 MeV/Nucleon 3He and 4He with 59Co NUCLEAR REACTIONS, ICPND 59Co(α, X)61Cu/60Cu/57Ni/62Cu/59Cu/62Ni/60Ni/59Ni/58Ni/61Co/60Co/58Co/58mCo/59Co/57Co/56Co/55Co/59Fe/58Fe/57Fe/56Fe/55Fe/54Fe/53Fe/52Fe/55Mn/54Mn/53Mn/52Mn/52mMn/51Mn/51Cr/52Cr/53Cr/54Cr/50Cr/49V/48V/50Ti/48Ti, E=20.1-198.9 MeV; 59Co(3He, X)61Cu/57Ni/58Co/58mCo/57Co/56Co/55Co/59Fe/52Fe/56Mn/54Mn/52Mn/51Cr/48V/48Sc/44Sc/44mSc, E=11-44.2 MeV; measured residual production σ, fragment mass, charge distributions, σ(fragment θ). In beam spectroscopy, activation techniques.
doi: 10.1103/PhysRevC.34.60
1986VA02 Phys.Lett. 166B, 372 (1986) S.Y.Van Der Werf, N.Blasi, M.N.Harakeh, G.Wenes, A.D.Bacher, G.T.Emery, C.W.Glover, W.P.Jones, H.J.Karwowski, H.Nann, C.Olmer, P.Den Heijer, C.W.De Jager, H.De Vries, J.Ryckebusch, M.Waroquier High-Spin 1p-1h Configurations in 116Sn and Their Fragmentation as seen in the Reactions 116Sn(p(pol), p'), 116Sn(e, e'), 115In(He, d) and 115In(α, t) NUCLEAR REACTIONS 116Sn(polarized p, p'), E=133.8 MeV; measured σ(θ), σ(Ep'), A(θ). 116Sn(e, e'), E=350 MeV; measured σ(E(e)), form factors. 115In(α, t), E=65 MeV; 115In(3He, d), E=50 MeV; measured σ(Et), σ(Ed). 116Sn deduced levels, J, π, L, stretched configuration fragmentation, transition amplitudes. DWBA analysis, shell model comparison.
doi: 10.1016/0370-2693(86)91582-0
1985FA07 Phys.Rev. C32, 1496 (1985) M.Fatyga, K.Kwiatkowski, H.J.Karwowski, L.W.Woo, V.E.Viola Linear Momentum Transfer in 40-150 MeV Proton-Induced Reactions with 238U NUCLEAR REACTIONS 238U(p, F), E=40, 90, 150 MeV; measured fission (fragment)(fragment)(θ), σ(θ1, θ2); deduced linear momentum transfer distribution. Intranuclear cascade, precompound emission models.
doi: 10.1103/PhysRevC.32.1496
1985ME03 Phys.Rev. C31, 309 (1985) H.O.Meyer, J.R.Hall, M.Hugi, H.J.Karwowski, R.E.Pollock, P.Schwandt Neutron-Proton Radiative Capture Cross Section at T(n) = 185 MeV NUCLEAR REACTIONS 1H(n, γ), E=185 MeV; measured recoil σ(θd), θ=0°-65°; deduced charge density, relativistic corrections role.
doi: 10.1103/PhysRevC.31.309
1984DA14 Phys.Rev. C30, 236 (1984) J.M.D'Auria, M.Dombsky, G.Sheffer, T.E.Ward, H.J.Karwowski, A.I.Yavin, J.L.Clark Inclusive Measurement of Quasifree (p, xn) Charge Exchange Reactions on Bismuth from 62 to 800 MeV NUCLEAR REACTIONS, ICPND 209Bi(p, n), (p, 2n), (p, 4n), (p, 6n), E=62-800 MeV; measured residuals production σ(E), production σ relative to 208Po vs E. 209Bi(p, X), E=210-480 MeV; measured residuals production σ relative to 202o. Radiochemical activation techniques. Intranuclear cascade calculation.
doi: 10.1103/PhysRevC.30.236
1984JA04 Phys.Lett. 136B, 153 (1984) J.Jastrzebski, P.P.Singh, T.Mroz, H.J.Karwowski, S.E.Vigdor, M.Fatyga Momentum Transfer in 30-200 MeV 4He Induced Reaction with 59Co NUCLEAR REACTIONS 59Co(α, X), E=30-200 MeV; measured residual production σ, recoil range vs compound nucleus, residue mass difference; deduced momentum transfer average characteristics.
doi: 10.1016/0370-2693(84)91170-5
1984KA03 Phys.Rev. C29, 872 (1984) Calculations of High-Spin Fission for A ≈ 200 NUCLEAR REACTIONS, ICPND 181Ta(19F, F), E=95.7, 109.9 MeV; 170Er(30Si, F), E=134.7, 152.9 MeV; 197Au(6Li, F), E=84.4 MeV; calculated fission σ(E). 181Ta(19F, xα), E=80-120 MeV; calculated evaporation σ(E). 181Ta(19F, F), E=96 MeV; calculated fission fragment σ(θ). 170Er(30Si, 4n), (30Si, 5n), (30Si, 6n), E ≈ 120-170 MeV; calculated σ(E); deduced rotating liquid drop model validity. 200,203Pb deduced fission, evaporation decay characteristics.
doi: 10.1103/PhysRevC.29.872
1984ME05 Phys.Rev.Lett. 52, 1759 (1984) H.O.Meyer, J.R.Hall, M.Hugi, H.J.Karwowski, R.E.Pollock, P.Schwandt Absolute Cross Section for Neutron-Proton Radiative Capture at T(n) = 185 MeV NUCLEAR REACTIONS 1H(n, d), E=185 MeV; measured absolute σ(θ), radiative capture.
doi: 10.1103/PhysRevLett.52.1759
1982KA05 Phys.Rev. C25, 1355 (1982) H.J.Karwowski, S.E.Vigdor, W.W.Jacobs, S.Kailas, P.P.Singh, F.Soga, T.G.Throwe, T.E.Ward, D.L.Wark, J.Wiggins Multiplicity of K X Rays and Collective Structure in the Transitional Nuclei with A ≈ 200 NUCLEAR REACTIONS 180Hf, 181Ta, 186W, 185,187Re, 194,198Pt, 197Au, 203,205Tl, 208Pb, 209Bi(6Li, xn), (7Li, xn), E=55-124 MeV; measured γ(X-ray)-, (X-ray)(X-ray)-coin, Eγ, Iγ, E(X-ray), I(X-ray); deduced σ(total), K X-ray multiplicity, production σ for K X-ray.
doi: 10.1103/PhysRevC.25.1355
1982VI02 Phys.Rev. C26, 1035 (1982) S.E.Vigdor, H.J.Karwowski, W.W.Jacobs, S.Kailas, P.P.Singh, F.Soga, T.G.Throwe Decay of Hot, High-Spin Nuclei Produced in 6Li-Induced Fusion Reactions NUCLEAR REACTIONS 181Ta, 194,198Pt, 197Au, 208Pb(6Li, pX), (6Li, dX), (6Li, tX), (6Li, αX), E=94.4, 74.8 MeV; measured inclusive σ(θ), particle spectra. 181Ta, 194,198Pt, 197Au, 208Pb(6Li, F), (6Li, X), E=74.8, 84.2, 94.4 MeV; measured σ(fragment θ), σ(fragment E), fission fragment anisotropy, σ(fusion). 181Ta, 194,198Pt, 197Au, 208Pb(6Li, xn), E=74.8, 84.2, 94.4 MeV; measured K X-ray multiplicities.
doi: 10.1103/PhysRevC.26.1035
1982VI03 Phys.Rev. C26, 1068 (1982) Influence of Deformed-Nucleus Level Densities on Statistical Model Calculations for High-Spin Fission NUCLEAR REACTIONS 197Au(6Li, F), (6Li, xα), (6Li, X), E=84.2 MeV; calculated fission σ, α-production σ, fission fragment anisotropy, fission probability vs spin, chance. 203Pb deduced fission, evaporation competition. Statistical model.
doi: 10.1103/PhysRevC.26.1068
1981KA34 Phys.Rev.Lett. 47, 1251 (1981) H.J.Karwowski, S.E.Vigdor, W.W.Jacobs, T.G.Throwe, D.L.Wark, S.Kailas, P.P.Singh, F.Soga, T.E.Ward, J.Wiggins Systematics of the K X-Ray Multiplicity for Transitional Nuclei with A ≈ 200 NUCLEAR REACTIONS 209Bi, 197Au, 203,205Tl, 185,187Re, 181Ta, 208Pb, 198,194Pt, 186W, 180Hf(6Li, xn), 197Au, 208Pb(7Li, xn), E=55-124 MeV; measured K X-ray multiplicities; deduced high-K rotational band role.
doi: 10.1103/PhysRevLett.47.1251
1980JA14 Phys.Rev. C22, 1443 (1980) J.Jastrzebski, H.J.Karwowski, M.Sadler, P.P.Singh Recoil Ranges of Nuclei Produced in the Interaction of 80-164 MeV Protons with Ni NUCLEAR REACTIONS 58Ni(p, X), 62Ni(p, X), E=80-164 MeV; measured Eγ, Iγ of radioactive products; deduced σ(X, E), recoil ranges, mass, charge distributions. Enriched targets, Ge(Li) counter.
doi: 10.1103/PhysRevC.22.1443
1980VI02 Phys.Lett. 90B, 384 (1980) S.E.Vigdor, H.J.Karwowski, W.W.Jacobs, S.Kailas, P.P.Singh, F.Soga, P.Yip On the Anisotropy of Multi-Chance, High-Spin Fission NUCLEAR REACTIONS 181Ta, 194,198Pt, 197Au, 208Pb(6Li, xn), (6Li, F), E=74.8-94.5 MeV; calculated σ(fragment θ), fission σ vs neutron number. Statistical model.
doi: 10.1016/0370-2693(80)90954-5
1979KA12 Phys.Rev.Lett. 42, 1732 (1979) H.J.Karwowski, S.E.Vigdor, W.W.Jacobs, S.Kailas, P.P.Singh, F.Soga, W.D.Ploughe Multiplicity of K X Rays Emitted in (6Li, xn) Reactions NUCLEAR REACTIONS 181Ta, 194,198Pt, 197Au, 208Pb(6Li, xn), E=75, 85, 95 MeV; measured (X-ray)(X-ray)-coin, γX-coin, Eγ, Iγ. 187Os, 200,204Tl, 203Pb, 214At deduced K X-ray multiplicities, absolute evaporation residue σ.
doi: 10.1103/PhysRevLett.42.1732
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