NSR Query Results
Output year order : Descending NSR database version of March 18, 2024. Search: Author = D.A.Roberts Found 64 matches. 2012AD03 Phys.Rev. C 85, 024308 (2012) T.Adachi, Y.Fujita, A.D.Bacher, G.P.A.Berg, T.Black, D.De Frenne, C.C.Foster, H.Fujita, K.Fujita, K.Hatanaka, M.Honma, E.Jacobs, J.Janecke, K.Kanzaki, K.Katori, K.Nakanishi, A.Negret, T.Otsuka, L.Popescu, D.A.Roberts, Y.Sakemi, Y.Shimbara, Y.Shimizu, E.J.Stephenson, Y.Tameshige, A.Tamii, M.Uchida, H.Ueno, T.Yamanaka, M.Yosoi, K.O.Zell High-resolution study of Gamow-Teller transitions via the 54Fe(3He, t)54Co reaction NUCLEAR REACTIONS 54Fe(3He, t), E=140 MeV/nucleon; measured triton spectra, angular distributions, yields. 54Co; deduced levels, l-transfers, Gamow-Teller excitations, B(GT), B(M1)/B(GT), isospin analog states. 54Fe(p, p'), E=160 MeV; measured Ep, Ip, yields. 54Fe; deduced levels, J, π, B(M1), isospin analog states, R(GT) values. Isoscalar and Isovector orbital terms. RCNP facility. Comparison with data from 54Fe(β-), (e, e'), (p, n), and with shell model calculations.
doi: 10.1103/PhysRevC.85.024308
2007FO05 Phys.Rev. C 75, 064605 (2007) W.Fong, J.L.Matthews, M.L.Dowell, E.R.Kinney, T.Soos, M.Y.Wang, S.A.Wood, P.A.M.Gram, G.A.Rebka, Jr., D.A.Roberts Inclusive pion double charge exchange in light p-shell nuclei NUCLEAR REACTIONS 6,7Li, 9Be, 12C(π+, π-), (π-, π+), E=120-270 MeV; measured double differential inclusive pion double charge exchange cross sections. Compared results to model calculations.
doi: 10.1103/PhysRevC.75.064605
2007FU04 Phys.Rev. C 75, 034310 (2007) H.Fujita, Y.Fujita, T.Adachi, A.D.Bacher, G.P.A.Berg, T.Black, E.Caurier, C.C.Foster, H.Fujimura, K.Hara, K.Harada, K.Hatanaka, J.Janecke, J.Kamiya, Y.Kanzaki, K.Katori, T.Kawabata, K.Langanke, G.Martinez-Pinedo, T.Noro, D.A.Roberts, H.Sakaguchi, Y.Shimbara, T.Shinada, E.J.Stephenson, H.Ueno, T.Yamanaka, M.Yoshifuku, M.Yosoi Isospin structure of Jπ = 1+ states in 58Ni and 58Cu studied by 58Ni(p, p') and 58Ni(3He, t)58Cu measurements NUCLEAR REACTIONS 58Ni(p, p'), E=160 MeV; measured Ep, σ(θ=0°). 58Ni(3He, t), E=140 MeV/nucleon; measured triton spectra, σ(θ=0°). 58Ni, 58Cu deduced 1+ level energies, B(GT), isospin symmetry features. Comparison with shell model predictions.
doi: 10.1103/PhysRevC.75.034310
2007ZI03 Nucl.Instrum.Methods Phys.Res. A579, 476 (2007) J.A.Zimmerman, F.D.Becchetti, H.C.Griffin, D.A.Roberts, M.Y.Lee, T.W.O'Donnell, J.A.Brown, R.M.Ronningen, T.Glasmacher, R.W.Ibbotson, H.Scheit, B.Pritychenko, D.W.Anthony, P.A.Lofy, M.Steiner Nuclear reactions with radioactive, isomer beams: Coulomb excitation of 18Fg.s and its Jπ = 5+ isomer 18Fm using a large position-sensitive NaI array NUCLEAR REACTIONS 12C(17O, 18F)11B, E=45 MeV/nucleon; measured Eγ, Iγ. 18F deduced B(E1), B(E2).
doi: 10.1016/j.nima.2007.04.124
2006CO14 Phys.Rev. C 74, 034333 (2006) A.L.Cole, H.Akimune, S.M.Austin, D.Bazin, A.M.van den Berg, G.P.A.Berg, J.Brown, I.Daito, Y.Fujita, M.Fujiwara, S.Gupta, K.Hara, M.N.Harakeh, J.Janecke, T.Kawabata, T.Nakamura, D.A.Roberts, B.M.Sherrill, M.Steiner, H.Ueno, R.G.T.Zegers Measurement of the Gamow-Teller strength distribution in 58Co via the 58Ni(t, 3He) reaction at 115 MeV/nucleon NUCLEAR REACTIONS 12C, 58Ni(t, 3He), E=115 MeV/nucleon; measured particle spectra, σ(θ). 58Co deduced Gamow-Teller strength distribution. Comparison with previous results, model predictions.
doi: 10.1103/PhysRevC.74.034333
2006WA18 Phys.Rev. C 74, 014605 (2006) R.E.Warner, F.Carstoiu, J.A.Brown, F.D.Becchetti, D.A.Roberts, B.Davids, A.Galonsky, R.M.Ronningen, M.Steiner, M.Horoi, J.J.Kolata, A.Nadasen, C.Samanta, J.Schwarzenberg, K.Subotic Reaction and proton-removal cross sections of 6Li, 7Be, 10B, 9, 10, 11C, 12N, 13, 15O, and 17Ne on Si at 15 to 53 MeV/nucleon NUCLEAR REACTIONS Si(6Li, X), (7Be, X), (10B, X), (9C, X), (10C, X), (11C, X), (12N, X), (13O, X), (15O, X), (17Ne, X), E=15-53 MeV/nucleon; measured reaction and proton-removal σ. 6Li, 7Be, 10B, 9,10,11C, 12N, 13,15O, 17Ne deduced radii. Comparison with Glauber model predictions.
doi: 10.1103/PhysRevC.74.014605
2006ZE01 Phys.Rev. C 74, 024309 (2006) R.G.T.Zegers, H.Akimune, S.M.Austin, D.Bazin, A.M.van den Berg, G.P.A.Berg, B.A.Brown, J.Brown, A.L.Cole, I.Daito, Y.Fujita, M.Fujiwara, S.Gales, M.N.Harakeh, H.Hashimoto, R.Hayami, G.W.Hitt, M.E.Howard, M.Itoh, J.Janecke, T.Kawabata, K.Kawase, M.Kinoshita, T.Nakamura, K.Nakanishi, S.Nakayama, S.Okumura, W.A.Richter, D.A.Roberts, B.M.Sherrill, Y.Shimbara, M.Steiner, M.Uchida, H.Ueno, T.Yamagata, M.Yosoi The (t, 3He) and (3He, t) reactions as probes of Gamow-Teller strength NUCLEAR REACTIONS 26Mg(t, 3He), E=115 MeV/nucleon; 26Mg(3He, t), E=140 MeV/nucleon; measured σ(E, θ); deduced Gamow-Teller transition strengths. Comparison with model predictions.
doi: 10.1103/PhysRevC.74.024309
2005BE38 Phys.Rev. C 71, 054610 (2005) F.D.Becchetti, R.S.Raymond, D.A.Roberts, J.Lucido, P.A.DeYoung, B.Hilldore, J.Bychowski, A.J.Huisman, P.J.VanWylen, J.J.Kolata, G.Rogachev, J.D.Hinnefeld The (8Li, α) reaction at low energy: Direct 4H cluster transfer? NUCLEAR REACTIONS C, 27Al, 208Pb(8Li, α), E=27.7 MeV; measured Eα, σ(θ); deduced reaction mechanism features.
doi: 10.1103/PhysRevC.71.054610
2005KI20 Phys.Rev. C 72, 044608 (2005) E.R.Kinney, J.L.Matthews, P.A.M.Gram, D.W.MacArthur, E.Piasetzky, G.A.Rebka, Jr., D.A.Roberts Inclusive pion double charge exchange in 4He at intermediate energies NUCLEAR REACTIONS 4He(π+, π-), E=120, 150, 180, 240, 270 MeV; 4He(π-, π+), E=180, 240 MeV; measured σ(E, θ); deduced multiple scattering effects, total σ.
doi: 10.1103/PhysRevC.72.044608
2003BE38 Nucl.Instrum.Methods Phys.Res. A505, 377 (2003) F.D.Becchetti, M.Y.Lee, T.W.O'Donnell, D.A.Roberts, J.J.Kolata, L.O.Lamm, G.Rogachev, V.Guimaraes, P.A.DeYoung, S.Vincent The TwinSol low-energy radioactive nuclear beam apparatus: status and recent results NUCLEAR REACTIONS Pb(8Li, 8Li), (8Li, 8Li'), E=20-36 MeV; measured σ(E). 8Li deduced transition B(E2). 1H(7Be, 7Be), E=low; measured excitation function.
doi: 10.1016/S0168-9002(03)01101-X
2003RO13 Phys.Rev. C 68, 024602 (2003) G.V.Rogachev, J.J.Kolata, V.Z.Goldberg, L.V.Grigorenko, F.D.Becchetti, P.A.DeYoung, J.D.Hinnefeld, L.O.Lamm, J.Lupton, T.W.O'Donnell, D.A.Roberts, S.Shaheen Final state interaction or a 3H excited state? NUCLEAR REACTIONS 1H(6He, α), E=23.9 MeV; measured Eα, Iα; deduced resonance structure, possible three-body final-state interaction. 3H deduced possible excited state.
doi: 10.1103/PhysRevC.68.024602
2002FU21 Prog.Theor.Phys.(Kyoto), Suppl. 146, 473 (2002) Y.Fujita, G.P.A.Berg, A.D.Bacher, T.Black, C.C.Foster, H.Fujimura, H.Fujita, K.Hara, K.Hatanaka, J.Janecke, J.Kamiya, K.Katori, T.Kawabata, W.Lozowski, T.Noro, D.A.Roberts, Y.Shimbara, E.J.Stephenson, H.Ueno, T.Yamanaka, M.Yosoi Isospin Symmetry in the Structure Study of Unstable Nuclei NUCLEAR REACTIONS 27Al(3He, t), E=150 MeV/nucleon; 27Al(p, p'), E=160 MeV; measured triton and proton spectra, σ(θ=0°). 27Al, 27Si, 27Mg, 27P deduced analog states features.
doi: 10.1143/PTPS.146.473
2002KO25 Phys.Rev. C65, 054616 (2002) J.J.Kolata, V.Z.Goldberg, L.O.Lamm, M.G.Marino, C.J.O'Keeffe, G.Rogachev, E.F.Aguilera, H.Garcia-Martinez, E.Martinez-Quiroz, P.Rosales, F.D.Becchetti, T.W.O'Donnell, D.A.Roberts, J.A.Brown, P.A.DeYoung, J.D.Hinnefeld, S.A.Shaheen Elastic Scattering and Transfer in the 8Li + 209Pb System Near the Coulomb Barrier NUCLEAR REACTIONS 208Pb(8Li, 8Li), (8Li, 7LiX), (8Li, αX), E(cm)=24-33 MeV; measured particle spectra, σ(θ); deduced total reaction σ, interaction barrier. Comparison with similar reactions.
doi: 10.1103/PhysRevC.65.054616
2002RO14 Phys.Rev. C65, 044605 (2002) D.A.Roberts, F.D.Becchetti, J.Janecke, M.Y.Lee, T.W.O'Donnell, K.Pham, J.A.Brown, R.E.Warner, R.M.Ronningen, H.W.Wilschut Energy Dependence of the Total Reaction Cross Section of Isomeric 18Fm on Silicon below 400 MeV NUCLEAR REACTIONS Si(18F, X), E < 400 MeV; measured reaction σ for metastable beam. Si(18F, X), (16O, X), (14N, X), E < 400 MeV; measured reaction σ. RADIOACTIVITY 18mF(IT) [from 12C(17O, 11B)]; measured Eγ, Iγ.
doi: 10.1103/PhysRevC.65.044605
2002VI08 Nucl.Instrum.Methods Phys.Res. A491, 426 (2002) S.M.Vincent, A.Aprahamian, J.J.Kolata, L.O.Lamm, V.Guimaraes, R.C.deHaan, D.Peterson, P.Santi, A.Teymurazyan, F.D.Becchetti, T.W.O'Donnell, M.Lee, D.A.Roberts, J.A.Zimmerman, J.A.Brown Gamma-ray spectroscopy with a low-energy 6He radioactive ion beam NUCLEAR REACTIONS 63Cu(6He, 2np), E=28 MeV; measured Eγ, Iγ, γγ-coin; deduced σ. 66Zn deduced levels, J, π.
doi: 10.1016/S0168-9002(02)01272-X
2002VO01 Phys.Rev.Lett. 88, 012501 (2002) P.A.Voytas, C.Ternovan, M.Galeazzi, D.McCammon, J.J.Kolata, P.Santi, D.Peterson, V.Guimaraes, F.D.Becchetti, M.Y.Lee, T.W.O'Donnell, D.A.Roberts, S.Shaheen Direct Measurement of the L/K Ratio in 7Be Electron Capture RADIOACTIVITY 7Be(EC) [from 3He(6Li, 7Be)]; measured X-ray spectra; deduced L/K capture ratio, possible in-medium effects. Cryogenic microcalorimeter.
doi: 10.1103/PhysRevLett.88.012501
2001AG06 Phys.Rev. C63, 061603 (2001) E.F.Aguilera, J.J.Kolata, F.D.Becchetti, P.A.DeYoung, J.D.Hinnefeld, A.Horvath, L.O.Lamm, H.-Y.Lee, D.Lizcano, E.Martinez-Quiroz, P.Mohr, T.W.O'Donnell, D.A.Roberts, G.Rogachev Elastic Scattering and Transfer in the 6He + 209Bi System below the Coulomb Barrier NUCLEAR REACTIONS 209Bi(6He, X), E(cm)=14.3-21.4 MeV; measured reaction σ. 209Bi(6He, 6He), (6He, αX), E(cm)=14.3-21.4 MeV; measured σ(θ); deduced optical model parameters.
doi: 10.1103/PhysRevC.63.061603
2001FU07 Nucl.Phys. A687, 311c (2001) Y.Fujita, T.Adachi, H.Akimune, A.D.Bacher, G.P.A.Berg, T.Black, I.Daito, C.C.Foster, H.Fujimura, H.Fujita, M.Fujiwara, K.Hara, K.Harada, M.N.Harakeh, K.Hatanaka, T.Inomata, J.Janecke, J.Kamiya, Y.Kanzaki, K.Katori, T.Kawabata, W.Lozowski, K.Nagayama, T.Noro, D.A.Roberts, H.Sakaguchi, Y.Shimbara, T.Shinada, E.J.Stephenson, A.Tamii, K.Tamura, M.Tanaka, H.Ueno, T.Wakasa, T.Yamanaka, M.Yoshifuku, M.Yosoi Isospin Symmetry-Structure Study at New High-Resolution Course of RCNP NUCLEAR REACTIONS 27Al(3He, t), E=150 MeV/nucleon; 27Al(p, p'), E=160 MeV; measured excitation energy spectra Gamow-Teller strength distributions, M1 strength distributions, resonance parameters.
doi: 10.1016/S0375-9474(01)00637-6
2001JA10 Nucl.Phys. A687, 270c (2001) J.Janecke, H.Akimune, H.Ejiri, R.Fox, Y.Fujita, M.Fujiwara, M.B.Greenfield, M.N.Harakeh, R.Hazama, T.Inomata, N.Kudomi, K.Pham, D.A.Roberts, A.Tamii, M.Tanaka, H.Toyokawa, M.Yosoi Direct and Statistical Proton Decay from Isovector Giant Resonances in 90Nb NUCLEAR REACTIONS 90Zr(3He, t), E=150 MeV; measured σ at small angles, Ep, (proton)(triton)-coin. 90Nb deduced 1+ level energy, isobaric analog state, Gamow-Teller spin resonances, spin-dipole resonances parameters. Statistical model calculations.
doi: 10.1016/S0375-9474(01)00631-5
2001KO02 Phys.Rev. C63, 024616 (2001) J.J.Kolata, V.Guimaraes, D.Peterson, P.Santi, R.H.White-Stevens, S.M.Vincent, F.D.Becchetti, M.Y.Lee, T.W.O'Donnell, D.A.Roberts, J.A.Zimmerman Breakup of 8B at Sub-Coulomb Energies NUCLEAR REACTIONS 58Ni(8B, p7Be), E=25.75 MeV; measured σ(E, θ); deduced reaction mechanism features. Comparison with coupled-channels calculations.
doi: 10.1103/PhysRevC.63.024616
2001ME13 Phys.Rev. C63, 065805 (2001) D.J.Mercer, S.M.Austin, J.A.Brown, S.A.Danczyk, S.E.Hirzebruch, J.H.Kelley, T.Suomijarvi, D.A.Roberts, T.P.Walker Production of A = 6, 7 Nuclides in the α + α Reaction and Cosmic Ray Nucleosynthesis NUCLEAR REACTIONS 4He(α, 2p), (α, np), (α, d), (α, p), (α, n), E=160, 280, 620 MeV; measured σ(θ), σ. Astrophysical implications discussed.
doi: 10.1103/PhysRevC.63.065805
2001RO32 Phys.Rev. C64, 061601 (2001) G.V.Rogachev, J.J.Kolata, F.D.Becchetti, P.A.DeYoung, M.Hencheck, K.Helland, J.D.Hinnefeld, B.Hughey, P.L.Jolivette, L.M.Kiessel, H.-Y.Lee, M.Y.Lee, T.W.O'Donnell, G.F.Peaslee, D.Peterson, D.A.Roberts, P.Santi, S.A.Shaheen Proton Elastic Scattering from 7Be at Low Energies NUCLEAR REACTIONS 1H(7Be, 7Be), E < 25.5 MeV; measured back-angle recoil proton spectra, σ(θ). 7Be(p, p), E=1-3.3 MeV; deduced excitation function. 8B deduced levels, J, π. Predicted 1+ state in 8B not found, astrophysical implication discussed. Thick target technique.
doi: 10.1103/PhysRevC.64.061601
2001WA40 Phys.Rev. C64, 044611 (2001) R.E.Warner, M.H.McKinnon, J.S.Needleman, N.C.Shaner, F.D.Becchetti, D.A.Roberts, A.Galonsky, R.M.Ronningen, M.Steiner, J.A.Brown, J.J.Kolata, A.Nadasen, K.Subotic Total Reaction and Neutron-Removal Cross Sections of (30-60)A MeV Be Isotopes on Si and Pb NUCLEAR REACTIONS Si(7Be, X), (9Be, X), (10Be, X), (11Be, X), (12Be, X), (14Be, X), Pb(10Be, X), (11Be, X), (12Be, X), E=30-60 MeV/nucleon; measured reaction σ, neutron-removal σ. 7,9,10,11,12,14Be deduced radii. Glauber model calculations.
doi: 10.1103/PhysRevC.64.044611
2000GU05 Phys.Rev.Lett. 84, 1862 (2000) V.Guimaraes, J.J.Kolata, D.Peterson, P.Santi, R.H.White-Stevens, S.M.Vincent, F.D.Becchetti, M.Y.Lee, T.W.O'Donnell, D.A.Roberts, J.A.Zimmerman Nuclear and Coulomb Interaction in 8B Breakup at Sub-Coulomb Energies NUCLEAR REACTIONS 58Ni(8B, p7Be), E=25.75 MeV; measured σ(θ); deduced continuum coupling effects. 8B deduced exotic proton halo structure. Several theoretical models considered.
doi: 10.1103/PhysRevLett.84.1862
2000WA23 Phys.Rev. C62, 024608 (2000) R.E.Warner, M.H.McKinnon, N.C.Shaner, F.D.Becchetti, A.Nadasen, D.A.Roberts, J.A.Brown, A.Galonsky, J.J.Kolata, R.M.Ronningen, M.Steiner, K.Subotic Total Reaction and Neutron-Removal Cross Sections of (30-60)A MeV He and Li Isotopes on Pb NUCLEAR REACTIONS Pb(α, X), (6He, X), (8He, X), (6Li, X), (7Li, X), (8Li, X), (9Li, X), (11Li, X), E=30-60 MeV/nucleon; measured total σ. Pb(11Li, 9Li), (6He, α), (8He, α), (8He, 6He), E=30-60 MeV/nucleon; measured neutron-removal σ; deduced role of electromagnetic dissociation. Microscopic model calculations. Secondary beams from 18O fragmentation.
doi: 10.1103/PhysRevC.62.024608
2000ZE05 Phys.Rev. C61, 054602 (2000) R.G.T.Zegers, S.Brandenburg, M.N.Harakeh, S.Y.van der Werf, J.Janecke, T.O'Donnell, D.A.Roberts, S.Shaheen, G.P.A.Berg, C.C.Foster, T.Rinckel, E.J.Stephenson Search for Isovector Giant Monopole Resonances via the 124Sn(3He, tn) Reaction NUCLEAR REACTIONS 124Sn(3He, t), E=199 MeV; measured excitation energy spectra, tn-, tγ-coin following residual nucleus decay; deduced no monopole resonance strength at high excitation energy.
doi: 10.1103/PhysRevC.61.054602
1999AN13 Nucl.Phys. A648, 3 (1999) T.Annakkage, J.Janecke, J.S.Winfield, G.P.A.Berg, J.A.Brown, G.Crawley, S.Danczyk, M.Fujiwara, D.J.Mercer, K.Pham, D.A.Roberts, J.Stasko, G.H.Yoo Isovector Giant Resonances in 6He, 12B, 90Y, 120In, and 208Tl Observed in the (7Li, 7Be) Charge-Exchange Reaction NUCLEAR REACTIONS H, C, 6Li, 12C, 90Zr, 120Sn, 208Pb(7Li, 7Be), E=350 MeV; measured particle spectra, angular distributions, Eγ, Iγ(θ). 6He, 12B, 90Y, 120In, 208Tl deduced resonance features, spinflip ratios, spinflip enhancement, effective number of participating protons. Microscopic one-step distorted-wave analysis with shell-model transition amplitudes.
doi: 10.1016/S0375-9474(99)00015-9
1999OD02 Nucl.Instrum.Methods Phys.Res. A422, 513 (1999) T.W.O'Donnell, F.D.Becchetti, J.Brown, J.W.Janecke, M.Y.Lee, R.S.Raymond, D.A.Roberts, R.S.Tickle, H.C.Griffin, R.M.Ronningen Isotope Yields with a Solenoid-Based Fragment Mass Analysis System - Prospects for Exotic Isotope Studies in the 10 ≤ Z ≤ 30 Range NUCLEAR REACTIONS C(136Xe, X), E=30 MeV/nucleon; measured Z=24-29 fragments isotopic yields. Production of neutron-rich nuclides for structure studies.
doi: 10.1016/S0168-9002(98)01077-8
1999SH30 Nucl.Instrum.Methods Phys.Res. A432, 299 (1999) B.M.Sherrill, H.Akimune, S.M.Austin, D.Bazin, A.M.van den Berg, G.P.A.Berg, J.Caggiano, I.Daito, H.Fujimura, Y.Fujita, M.Fujiwara, K.Hara, M.N.Harakeh, J.Janecke, T.Kawabata, A.Navin, D.A.Roberts, M.Steiner Charge-Exchange Reactions with a Secondary Triton Beam NUCLEAR REACTIONS 12C(t, 3He), E ≈ 350 MeV; measured particle spectra, σ(E, α). Secondary beam from α-particle fragmentation.
doi: 10.1016/S0168-9002(99)00518-5
1998DA05 Phys.Lett. 418B, 27 (1998) I.Daito, H.Akimune, S.M.Austin, D.Bazin, G.P.A.Berg, J.A.Brown, B.S.Davids, Y.Fujita, H.Fujimura, M.Fujiwara, R.Hazama, T.Inomata, K.Ishibashi, J.Janecke, S.Nakayama, K.Pham, D.A.Roberts, B.M.Sherrill, M.Steiner, A.Tamii, M.Tanaka, H.Toyokawa, M.Yosoi Gamow-Teller Strengths from (t, 3He) Charge-Exchange Reactions on Light Nuclei NUCLEAR REACTIONS 9Be, 10,11B, 12,13C(t, 3He), E=127 MeV/nucleon; measured zero degree 3He spectra. 9Li, 10,11Be, 12,13B deduced Gamow-Teller strengths. Radioactive beam, dispersion matching.
doi: 10.1016/S0370-2693(97)01393-2
1998KO01 Phys.Rev. C57, R6 (1998) J.J.Kolata, V.Guimaraes, D.Peterson, P.Santi, R.White-Stevens, J.von Schwarzenberg, J.D.Hinnefeld, E.F.Aguilera, E.Martinez-Quiroz, D.A.Roberts, F.D.Becchetti, M.Y.Lee, R.A.Kryger 6He + 209Bi Fusion-Fission Reaction NUCLEAR REACTIONS 209Bi(6He, F), E≈32 MeV; measured fission σ; deduced no evidence for transfer fission contribution.
doi: 10.1103/PhysRevC.57.R6
1998WA16 Nucl.Phys. A635, 292 (1998) R.E.Warner, H.Thirumurthy, J.Woodroffe, F.D.Becchetti, J.A.Brown, B.S.Davids, A.Galonsky, J.J.Kolata, J.J.Kruse, M.Y.Lee, A.Nadasen, T.W.O'Donnell, D.A.Roberts, R.M.Ronningen, C.Samanta, P.Schwandt, J.von Schwarzenberg, M.Steiner, K.Subotic, J.Wang, J.A.Zimmerman Reaction Cross Sections in Si of Light Proton-Halo Candidates 12N and 17Ne NUCLEAR REACTIONS Si(12N, X), (15O, X), (17Ne, X), E=29-53 MeV/nucleon; measured total reaction σ, charge-removal σ; deduced dependence on proton separation energy. Radioactive beams, Glauber model, proton-halo nuclei.
doi: 10.1016/S0375-9474(98)00163-8
1997DA28 Nucl.Instrum.Methods Phys.Res. A397, 465 (1997); Erratum Nucl.Instrum.Methods Phys.Res. A402, 177 (1998) I.Daito, H.Akimune, S.M.Austin, D.Bazin, G.P.A.Berg, J.A.Brown, B.S.Davids, Y.Fujita, H.Fujimura, M.Fujiwara, R.Hazama, T.Inomata, K.Ishibashi, J.Janecke, S.Nakayama, K.Pham, D.A.Roberts, B.M.Sherrill, M.Steiner, A.Tamii, M.Tanaka, H.Toyokawa, M.Yosoi (t, 3He) Reaction; New tool for studying spin-isospin excitations in neutron rich nuclei NUCLEAR REACTIONS 12C, 10B(t, 3He), E=381 MeV; measured σ(E(3He), θ). 12B, 10Be deduced levels spin-isospin characteristics.
doi: 10.1016/S0168-9002(97)00825-5
1997YU01 Phys.Rev. C55, 1848 (1997) M.Yuly, W.Fong, E.R.Kinney, C.J.Maher, J.L.Matthews, T.Soos, J.Vail, M.Y.Wang, S.A.Wood, P.A.M.Gram, G.A.Rebka, Jr., D.A.Roberts Pion Double Charge Exchange and Inelastic Scattering on 3He NUCLEAR REACTIONS 3He(π-, π+), (π-, π-), (π+, π+), E=120-240 MeV; measured σ(θ, E(π)), σ(θ); deduced sequential charge exchange mechanism. DWIA approach.
doi: 10.1103/PhysRevC.55.1848
1996JA08 Nucl.Phys. A599, 191c (1996) J.Janecke, T.Annakkage, K.Pham, D.A.Roberts, J.A.Brown, G.Crawley, S.Danczik, D.J.Mercer, J.Stasko, J.S.Winfield, G.H.Yoo, G.P.A.Berg, M.Fujiwara Isovector Giant Resonances in 6He, 12B, 90Y, 120In, and 208Tl NUCLEAR REACTIONS 6Li, 12C, 90Zr, 120Sn, 208Pb(7Li, 7Be), E=350 MeV; measured σ(θ), 7Be spectra, γ(7Be)-coin. 6He, 12B, 90Y, 120In, 208Tl deduced isovector giant resonances, J, π, width.
doi: 10.1016/0375-9474(96)00061-9
1996JA11 Phys.Rev. C54, 1070 (1996) J.Janecke, T.Annakkage, G.P.A.Berg, B.A.Brown, J.A.Brown, G.Crawley, S.Danczyk, M.Fujiwara, D.J.Mercer, K.Pham, D.A.Roberts, J.Stasko, J.S.Winfield, G.H.Yoo Structure of the Neutron-Halo Nucleus 6He NUCLEAR REACTIONS 6Li(7Li, 7Be), E=350 MeV; measured σ(θ). 6He deduced resonances, J, π. Microscopic finite-range DWBA.
doi: 10.1103/PhysRevC.54.1070
1995BR05 Phys.Rev. C51, 1312 (1995) J.A.Brown, F.D.Becchetti, J.Janecke, D.A.Roberts, D.W.Litzenberg, T.W.O'Donnell, R.E.Warner, N.A.Orr, R.M.Ronningen Proton Scattering from an Excited Nucleus (18mF, J(π) = 5+, E(α) = 1.1 MeV) Using a γ-Ray-Tagged Secondary Isomeric Nuclear Beam NUCLEAR REACTIONS 18F(p, p), E(cm) ≈ 20 MeV; measured Eγ, Iγ, target in isomeric state, σ(θ). Secondary isomeric beam, γ-ray tagging.
doi: 10.1103/PhysRevC.51.1312
1995DO06 Phys.Rev. C51, 1551 (1995) M.L.Dowell, W.Fong, J.L.Matthews, H.Park, M.Wang, M.E.Yuly, E.R.Kinney, P.A.M.Gram, D.A.Roberts, G.A.Rebka, Jr. Measurement of the 3H(π+,3He)π0 Differential Cross Section at T(π) = 142 MeV NUCLEAR REACTIONS 3H(π+, π0), E=142 MeV; measured residual nucleus yield vs momentum, σ(θ); deduced ΔS=1 contribution evidence.
doi: 10.1103/PhysRevC.51.1551
1995PH01 Phys.Rev. C51, 526 (1995) K.Pham, J.Janecke, D.A.Roberts, M.N.Harakeh, G.P.A.Berg, S.Chang, J.Liu, E.J.Stephenson, B.F.Davis, H.Akimune, M.Fujiwara Fragmentation and Splitting of Gamow-Teller Resonances in Sn(3He, t)Sb Charge-Exchange Reactions, A = 112-124 NUCLEAR REACTIONS Sn(3He, t), E=200 MeV; measured σ(Et), σ(θ). 112,114,116,117,118,119,120,122,124Sb deduced IAS, Gamow-Teller transitions, Γ, fragmentation features.
doi: 10.1103/PhysRevC.51.526
1995RO14 Nucl.Phys. A588, 247c (1995) D.A.Roberts, F.D.Becchetti, J.A.Brown, J.Janecke, K.Pham, T.W.O'Donnell, R.E.Warner, R.M.Ronningen, H.W.Wilschut Unusual Energy Dependence of the Total Nuclear Reaction Cross Section for a Secondary Isomeric Nuclear Beam (18mF, Jπ = 5+, E(x) = 1.1 MeV) NUCLEAR REACTIONS Si(18F, X), E=22.3 MeV/nucleon; measured total reaction σ, projectile in ground, isomeric states; deduced unusual features for σ obtained from 18mF beam. Secondary 18,18mF beam from 12C(17O, 18F) reaction.
doi: 10.1016/0375-9474(95)00147-S
1995RO20 Phys.Rev. C52, 1361 (1995) D.A.Roberts, K.Ashktorab, F.D.Becchetti, J.Janecke, M.N.Harakeh, S.Y.van der Werf, G.P.A.Berg, C.C.Foster, J.E.Lisantti, T.Rinckel, E.J.Stephenson, S.P.Wells, A.Nadasen, S.Shaheen Neutron Decay from the Isobaric Analog State in 120Sb Populated in 120Sn(3He, t)120Sb at E(3He) = 200 MeV, θ = 0° NUCLEAR REACTIONS 120Sn(3He, t), (3He, nt), E=200 MeV; measured σ(Et, θ=0°), nt-coin. 120Sb deduced IAS spreading width.
doi: 10.1103/PhysRevC.52.1361
1995WA01 Phys.Rev. C51, 178 (1995) R.E.Warner, F.D.Becchetti, J.W.Janecke, D.A.Roberts, D.Butts, C.L.Carpenter, J.M.Fetter, A.Muthukrishnan, J.J.Kolata, K.Lamkin, M.Belbot, M.Zahar, A.Galonsky, K.Ieki, P.Zecher Elastic Scattering of 10 MeV 6He from 12C, (nat)Ni, and 197Au NUCLEAR REACTIONS 12C, Ni, 197Au(6He, 6He), E=10 MeV; measured σ(θ). Optical model analysis.
doi: 10.1103/PhysRevC.51.178
1994AN37 Nucl.Instrum.Methods Phys.Res. A353, 24 (1994) T.N.Annakkage, J.Janecke, K.Pham, D.A.Roberts, G.P.A.Berg, J.S.Winfield Fast γ-Ray Coincidence Timing using a BGO Detector Array in a Nuclear Reaction Experiment NUCLEAR STRUCTURE 7Be; analyzed γγ(t) following excited states production in (7LI, 7Be) reactions; deduced detector time resolution, other features. Simulation of BGO detector array output signals, fast γ-ray coincidence timing.
doi: 10.1016/0168-9002(94)91594-6
1994OD04 Nucl.Instrum.Methods Phys.Res. A353, 215 (1994) T.W.O'Donnell, E.Aldredge, F.D.Becchetti, J.A.Brown, P.Conlan, J.Janecke, R.S.Raymond, D.A.Roberts, R.S.Tickle, H.C.Griffin, R.M.Ronningen A Mass Separator using a Large Solenoid ' Lens ' with Time-of-Flight and Position Sensitive Detectors NUCLEAR REACTIONS C(136Xe, X), E=30 MeV/nucleon; measured projectile fragmentation associated σ(θ), mass, charge distributions. Mass separator with large solenoid lens with tof, position sensitive detectors.
doi: 10.1016/0168-9002(94)91641-1
1993AS02 Phys.Rev. C47, 2954 (1993) K.Ashktorab, J.W.Janecke, F.D.Becchetti, D.A.Roberts Beta Decay of 187Re and Cosmochronology RADIOACTIVITY 187Re(β-); measured β-spectrum, end-point energy, continuum decay partial T1/2; deduced branching ratio for decay to 187Os bound states. Cosmochronology implications.
doi: 10.1103/PhysRevC.47.2954
1993BE22 Phys.Rev. C48, 308 (1993) F.D.Becchetti, W.Z.Liu, K.Ashktorab, J.F.Bajema, J.A.Brown, J.W.Janecke, D.A.Roberts, J.J.Kolata, K.L.Lamkin, A.Morsad, R.J.Smith, X.J.Kong, R.E.Warner Systematics of 8Li-Induced Radioactive Beam Reactions: E = 13-20 MeV NUCLEAR REACTIONS 2H, 9Be, 13,12C, 14N, 27Al, 58Ni(8Li, 7Li), (8Li, 8Li), E ≈ 13-20 MeV; 9Be, 12C(8Li, α), E ≈ 13-20 MeV; measured σ(θ).
doi: 10.1103/PhysRevC.48.308
1993CA04 Phys.Rev. C47, 387 (1993) D.D.Caussyn, N.R.Fletcher, K.W.Kemper, E.E.Towers, J.J.Kolata, K.Lamkin, R.J.Smith, F.D.Becchetti, J.A.Brown, J.W.Janecke, D.A.Roberts, D.L.Gay Cross Section for the Primordial Reaction 8Li(p, n)8Be(g.s.) at E(cm) = 1.5 MeV NUCLEAR REACTIONS 8Li(p, n), E(cm)=1.5 MeV; measured σ(θ); deduced σ. Hauser-Feshbach calculation.
doi: 10.1103/PhysRevC.47.387
1993JA14 Phys.Rev. C48, 2828 (1993) J.Janecke, K.Pham, D.A.Roberts, D.Stewart, M.N.Harakeh, G.P.A.Berg, C.C.Foster, J.E.Lisantti, R.Sawafta, E.J.Stephenson, A.M.van den Berg, S.Y.van der Werf, S.E.Muraviev, M.H.Urin Fragmentation of Gamow-Teller Strength Observed in 117,120Sn(3He, t)117,120Sb Charge-Exchange Reactions NUCLEAR REACTIONS 117,120Sn(3He, t), E=200 MeV; measured σ(Et, θ). 117,120Sb deduced level, J, π, giant resonances features, Gamow-Teller transition strength fragmentation. Magnetic spectrometer.
doi: 10.1103/PhysRevC.48.2828
1992BE46 Nucl.Phys. A550, 507 (1992) F.D.Becchetti, J.A.Brown, W.Z.Liu, J.W.Janecke, D.A.Roberts, J.J.Kolata, R.J.Smith, K.Lamkin, A.Morsad, R.E.Warner, R.N.Boyd, J.D.Kalen Reaction Rates for 8Li(p, α) and 8Li(p, n, α) and Their Effect on Primordial Nucleosynthesis NUCLEAR REACTIONS 1H(8Li, α), E(cm)=1.5 MeV; measured σ(Eα), σ(θ); deduced 8Li destruction thermonuclear reaction rate, p+8Li total reaction rate. Radioactive beam.
doi: 10.1016/0375-9474(92)90020-K
1992RO04 Phys.Rev. C45, 726 (1992) D.A.Roberts, F.D.Becchetti, J.A.Brown, J.W.Janecke, D.Shen, Z.W.Yin, A.Nadasen Light Particle Emission Near 0° in the Reaction 20Ne + 181Ta at E/A = 85 MeV NUCLEAR REACTIONS 181Ta(20Ne, X), E=85 MeV/nucleon; measured σ(fragment θ, E) for X=p, d, t, α and higher Z; deduced projectile saturation effect, reaction mechanism.
doi: 10.1103/PhysRevC.45.726
1992WO12 Phys.Rev. C46, 1903 (1992) S.A.Wood, J.L.Matthews, E.R.Kinney, P.A.M.Gram, G.A.Rebka, Jr., D.A.Roberts Systematics of Inclusive Pion Double Charge Exchange in the Delta Resonance Region NUCLEAR REACTIONS 16O, 40Ca, 103Rh, 208Pb(π+, π-X), (π-, π+X), E=120-270 MeV; measured σ(θ, E(π)); deduced reaction σ, systematics. Model comparison.
doi: 10.1103/PhysRevC.46.1903
1991BE49 Nucl.Instrum.Methods Phys.Res. B56/57, 554 (1991) F.D.Becchetti, J.A.Brown, K.Ashktorab, J.W.Janecke, W.Z.Liu, D.A.Roberts, R.J.Smith, J.J.Kolata, K.Lamkin, A.Morsad, R.E.Warner Production and Use of 6He, 7Be, 8Li, 12B and Metastable Nuclear Beams NUCLEAR REACTIONS 9Be(7Li, 8Li), (7Li, α), (7Li, 6He), E=17 MeV; 1H(10B, 7Be), E=23.5 MeV; 9Be(7Li, 6He), E=14.63 MeV; 1H(10B, 7Be), E=23.5 MeV; 12C(3He, 7Be), E=22.5 MeV; 10B(6Li, 7Be), E=23 MeV; 12C(17O, 18F), E=70 MeV; measured secondary beam production yields. 197Au, C, Ni(8Li, 8Li), (8Li, 8Li'), E=13.8-14.9 MeV; measured σ(E(8Li)). 197Au, Ti, 2H, 27Al, C, 9Be(6He, 6He), E=8.8-9.3 MeV; measured σ(θ). Other reactions discussed.
doi: 10.1016/0168-583X(91)96094-2
1991BR14 Phys.Rev.Lett. 66, 2452 (1991) J.A.Brown, F.D.Becchetti, J.W.Janecke, K.Ashktorab, D.A.Roberts, J.J.Kolata, R.J.Smith, K.Lamkin, R.E.Warner Coulomb Excitation of 8Li NUCLEAR REACTIONS Ni(8Li, 8Li'), (8Li, 8Li), E ≈ 14.6 MeV; measured σ(θ) following Coulomb excittion. 8Li deduced level excitation probability, B(E2).
doi: 10.1103/PhysRevLett.66.2452
1991JA04 Nucl.Phys. A526, 1 (1991) J.Janecke, F.D.Becchetti, A.M.van den Berg, G.P.A.Berg, G.Brouwer, M.B.Greenfield, M.N.Harakeh, M.A.Hofstee, A.Nadasen, D.A.Roberts, R.Sawafta, J.M.Schippers, E.J.Stephenson, D.P.Stewart, S.Y.van der Werf Non-Spin-Flip (3He, t) Charge-Exchange and Isobaric Analog States of Actinide Nuclei Studied at θ = 0°, E(3He) = 76 MeV and 200 MeV NUCLEAR REACTIONS 12C, 16O, 27Al, 28Si, Ta, 230,232Th, 234,236,238U(3He, t), E=76.5 MeV; 12,13C, 16O, 19F, 28,29Si, 90Zr, 117,120Sn, Ta, W, 197Au, 208Pb, 230,232Th, 234,238U, 244Pu(3He, t), E=200 MeV; measured σ(Et); 120Sn(3He, t), E=200 MeV; measured σ(θt) for IAS; 230,232Th, 234,236,238U(3He, tp), E=76.5 MeV; measured proton decay from IAS, σ(Et, Ep, θt, θp); deduced Q-values for transitions to IAS. 90Nb, 117Sb, 120Sn, 181W, 184Re, 197Hg, 208Pb, 230,232Pa, 234,236,238Np, 244Am deduced Coulomb displacement energies, total widths Γ, escape widths, spreading widths of IAS. Non-spin-flip charge exchange effective interaction. Enriched and long-lived radioactive targets, magnetic spectrometers.
doi: 10.1016/0375-9474(91)90295-H
1991SM01 Phys.Rev. C43, 761 (1991) R.J.Smith, J.J.Kolata, K.Lamkin, A.Morsad, K.Ashktorab, F.D.Becchetti, J.A.Brown, J.W.Janecke, W.Z.Liu, D.A.Roberts Scattering of 6He from 197Au, (nat)Ti, 27Al, (nat)C, and 9Be at E = 8-9 MeV NUCLEAR REACTIONS 197Au, Ti, 27Al, C(6He, 6He), E=8.8-9.3 MeV; measured σ(θ); deduced model parameters. Beam from 9Be(7Li, 6He) reaction.
doi: 10.1103/PhysRevC.43.761
1991SM02 Phys.Rev. C43, 2346 (1991) R.J.Smith, J.J.Kolata, K.Lamkin, A.Morsad, F.D.Becchetti, J.A.Brown, W.Z.Liu, J.W.Janecke, D.A.Roberts, R.E.Warner Elastic and Inelastic Scattering of 8Li from 12C NUCLEAR REACTIONS C, 197Au(8Li, 8Li), (8Li, 8Li'), E=14 MeV; measured σ(θ); deduced model parameters. 8Li level deduced B(E2).
doi: 10.1103/PhysRevC.43.2346
1990BE31 Phys.Rev. C42, R801 (1990) F.D.Becchetti, K.Ashktorab, J.A.Brown, J.W.Janecke, D.A.Roberts, J.van Klinken, W.Z.Liu, J.J.Kolata, K.Lamkin, R.J.Smith, R.E.Warner Production of an Isomeric, Excited Radioactive Nuclear Beam NUCLEAR REACTIONS 12C(17O, 18F), E=50-80 MeV; measured σ, production rate of 18mF.
doi: 10.1103/PhysRevC.42.R801
1990RO14 Phys.Rev. C42, R1809 (1990) D.A.Roberts, F.D.Becchetti, E.Ben-Jacob, P.Garik, J.Musser, B.Orr, G.Tarle, A.Tomasch, J.S.Holder, D.Redina, B.Heuser, G.Wicker Energy and Flux Limits of Cold-Fusion Neutrons using a Deuterated Liquid Scintillator NUCLEAR REACTIONS 2H(d, d), E=low; measured neutron spectra; deduced fusion upper limit. Deuterated liquid scintillator detectors, annealed Pd wire, Pd casting samples, n/γ discriminations.
doi: 10.1103/PhysRevC.42.R1809
1990SH25 Phys.Rev. C42, 1519 (1990) S.Shaheen, F.D.Becchetti, D.A.Roberts, J.W.Janecke, R.L.Stern, A.Nadasen Very-High-Energy Light Charged-Particle Production Near 0° in Heavy-Ion Collisions, 9 ≤ E/A ≤ 40 MeV NUCLEAR REACTIONS Ta(40Ar, X), (16O, X), E=20, 30 MeV/nucleon; measured σ(fragment θ, E); deduced reaction mechanism, model parameter dependences. Moving source model.
doi: 10.1103/PhysRevC.42.1519
1990SM04 Nucl.Instrum.Methods Phys.Res. A294, 26 (1990) R.J.Smith, J.J.Kolata, K.Lamkin, A.Morsad, K.Ashktorab, F.D.Becchetti, J.Brown, J.W.Janecke, W.Z.Liu, D.A.Roberts Production and Use of Radioactive 7Be Beams NUCLEAR REACTIONS 1H(10B, 7Be), E=23.5 MeV; 12C(3He, 7Be), E=22.5 MeV; measured σ(E(7Be)), yields. Radioactive beam production. 12C, 197Au(7Be, 7Be), E=8.5-22.4 MeV; measured σ(θ), ratio to Rutherford scattering. Radioactive beam.
doi: 10.1016/0168-9002(90)91824-U
1989BE28 Phys.Rev. C40, R1104 (1989) F.D.Becchetti, W.Z.Liu, D.A.Roberts, J.W.Janecke, J.J.Kolata, A.Morsad, X.J.Kong, R.E.Warner Measurements of Discrete Nuclear Reactions Induced by a Radioactive 8Li Beam NUCLEAR REACTIONS 12C, 9Be(8Li, 7Li), E=13 MeV; measured σ(θ), σ(E(7Li)); deduced astrophysical abundance implications.
doi: 10.1103/PhysRevC.40.R1104
1989GR06 Phys.Rev.Lett. 62, 1837 (1989) P.A.M.Gram, S.A.Wood, E.R.Kinney, S.Hoibraten, P.Mansky, J.L.Matthews, T.Soos, G.A.Rebka, Jr., D.A.Roberts Dependence of the Cross Section for Inclusive Pion Double Charge Exchange on Nuclear Mass and Charge NUCLEAR REACTIONS 4He, 6,7Li, 9Be, 12C, 16O, 40Ca, 103Rh, 208Pb(π+, π-), (π-, π+), E=180, 240 MeV; measured total reaction σ. Phenomenological model.
doi: 10.1103/PhysRevLett.62.1837
1989KO17 Nucl.Instrum.Methods Phys.Res. B40/41, 503 (1989) J.J.Kolata, A.Morsad, X.J.Kong, R.E.Warner, F.D.Becchetti, W.Z.Liu, D.A.Roberts, J.W.Janecke A Radioactive Beam Facility Using a Large Superconducting Solenoid NUCLEAR REACTIONS 9Be(8Li, 7Li), E=11 MeV; measured residuals spectra, σ(θ). 9Be, 197Au(8Li, 8Li), E=not given; measured σ(θ).
doi: 10.1016/0168-583X(89)91032-X
1986KI20 Phys.Rev.Lett. 57, 3152 (1986) E.R.Kinney, J.L.Matthews, P.A.M.Gram, D.W.MacArthur, E.Piasetzky, G.A.Rebka, Jr., D.A.Roberts Inclusive Pion Double Charge Exchange in 4He NUCLEAR REACTIONS 4He(π+, π-), (π-, π+), E=120, 150, 180, 240, 270 MeV; measured σ(E(π), θ(π)); deduced reaction mechanism. Liquid helium target, double focusing spectrometer.
doi: 10.1103/PhysRevLett.57.3152
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