NSR Query Results
Output year order : Descending NSR database version of April 26, 2024. Search: Author = J.C.Bergstrom Found 47 matches. 2008BA24 Phys.Rev. C 77, 064601 (2008) M.G.Barnett, R.Igarashi, R.E.Pywell, J.C.Bergstrom Near threshold (γ, π0) reactions for 4He and 12C NUCLEAR REACTIONS 4He(γ, π0), E=141-159 MeV; measured σ, angular distributions; deduced reduced isovector amplitudes. 12C(γ, π0); analyzed σ, deduced reduced isovector amplitudes.
doi: 10.1103/PhysRevC.77.064601
2001WA24 Phys.Rev. C64, 014603 (2001) B.J.Warkentin, D.L.Hornidge, R.Igarashi, J.C.Bergstrom, E.L.Hallin, N.R.Kolb, R.E.Pywell, D.M.Skopik, J.M.Vogt, G.Feldman Nuclear Compton Scattering from 12C and Bound-Nucleon Polarizabilities NUCLEAR REACTIONS 12C(γ, γ), (γ, γ'), E=84-105 MeV; measured Eγ, Iγ, σ(θ); deduced approximate bound nucleon polarizabilities. Tagged photon beam.
doi: 10.1103/PhysRevC.64.014603
2000HO02 Phys.Rev.Lett. 84, 2334 (2000) D.L.Hornidge, B.J.Warkentin, R.Igarashi, J.C.Bergstrom, E.L.Hallin, N.R.Kolb, R.E.Pywell, D.M.Skopik, J.M.Vogt, G.Feldman Elastic Compton Scattering from the Deuteron and Nucleon Polarizabilities NUCLEAR REACTIONS 2H(γ, γ), E=84-105 MeV; measured Eγ, Iγ, σ(θ). 1n, 1H deduced polarizabilities. Tagged photons, large-volume NaI spectrometer.
doi: 10.1103/PhysRevLett.84.2334
1999BE14 Phys.Rev. C59, 2588 (1999) J.C.Bergstrom, R.Igarashi, J.M.Vogt Measurement of the 6Li(γ, π0) Reaction Near Threshold NUCLEAR REACTIONS 6Li(γ, π0), E ≈ threshold; measured σ, σ(E, θ); deduced partial wave amplitudes.
doi: 10.1103/PhysRevC.59.2588
1999KO43 Phys.Rev.Lett. 83, 3609 (1999) E.Korkmaz, N.R.Kolb, D.A.Hutcheon, G.V.O'Rielly, J.C.Bergstrom, G.Feldman, D.Jordan, A.K.Opper, R.E.Pywell, B.Sawatzky, D.M.Skopik Measurement of thr γp → π+n Reaction Near Threshold NUCLEAR REACTIONS 1H(γ, π+), E=152-154 MeV; measured σ(θ), neutron yields; deduced electric dipole amplitude. Comparison with chiral perturbation theory.
doi: 10.1103/PhysRevLett.83.3609
1998BE22 Phys.Rev. C57, 3203 (1998) J.C.Bergstrom, R.Igarashi, J.M.Vogt, N.Kolb, R.E.Pywell, D.M.Skopik, E.Korkmaz Measurement of the 2H(γ, π0) Reaction Near Threshold NUCLEAR REACTIONS 2H(γ, π0), E ≈ threshold; measured σ(E), σ(E, θ); deduced nuclear S-wave, P-wave amplitudes.
doi: 10.1103/PhysRevC.57.3203
1998BE67 Phys.Rev. C58, 2574 (1998) Measurement of the 1H(γ, π0) Cross Section Near Threshold. III. Angular Coefficients NUCLEAR REACTIONS 1H(γ, π0), E=144.7-169.3 MeV; measured σ(θ); deduced angular distribution coefficients.
doi: 10.1103/PhysRevC.58.2574
1997BE13 Phys.Rev. C55, 2016 (1997) J.C.Bergstrom, R.Igarashi, J.M.Vogt Measurement of the 1H(γ, π0) Cross Section Near Threshold. II. Pion Angular Distributions NUCLEAR REACTIONS 1H(γ, π0), E=144.7-169.3 MeV; analyzed data; deduced S-, P-wave amplitude characteristics.
doi: 10.1103/PhysRevC.55.2016
1997BE22 Phys.Rev. C55, 2923 (1997) J.C.Bergstrom, R.Igarashi, J.M.Vogt Measurement of the 12C(γ, π0) Reaction Near Threshold NUCLEAR REACTIONS 12C(γ, π0), E=110.8-160.8 MeV; measured σ(E), σ(E, θ); deduced isovector P-wave amplitude, inelastic γ, π0 transition to the 4.43 MeV (2+) state.
doi: 10.1103/PhysRevC.55.2923
1996BE08 Phys.Rev. C53, R1052 (1996) J.C.Bergstrom, J.M.Vogt, R.Igarashi, K.J.Keeter, E.L.Hallin, G.A.Retzlaff, D.M.Skopik, E.C.Booth Measurement of the 1H(γ, π0) Cross Section Near Threshold NUCLEAR REACTIONS 1H(γ, π0), E=144.7-169.3 MeV; measured σ(E), σ(E, θ); deduced S-wave amplitudes. Low energy theorem, heavy baryon chiral perturbation theory.
doi: 10.1103/PhysRevC.53.R1052
1995BE39 Phys.Rev. C52, 1986 (1995) Comparing the p-Wave Multipoles for π0 Photoproduction with Low-Energy Predictions NUCLEAR REACTIONS 1H(γ, π0), E=threshold; analyzed calculated p-wave π0 photoproduction amplitudes. Heavy-baryon chiral perturbation theory based new low-energy theorems.
doi: 10.1103/PhysRevC.52.1986
1995IG01 Phys.Rev. C52, 755 (1995) R.Igarashi, J.C.Bergstrom, H.S.Caplan, K.G.E.Doss, E.L.Hallin, D.M.Skopik, D.Delli Carpini, E.C.Booth, E.K.McIntyre, J.P.Miller, M.A.Lucas, B.E.MacGibbon, A.M.Nathan, D.Wells Photon Scattering from 12C and 4He Nuclei Near the Δ(1232) Resonance NUCLEAR REACTIONS 12C(γ, γ), (γ, γ'), E=158.8-290.2 MeV bremsstrahlung; 4He(γ, γ), E=158.8 bremsstrahlung; measured σ(θ). Model comparison.
doi: 10.1103/PhysRevC.52.755
1995SH20 Phys.Rev. C52, 199 (1995) J.Shaw, H.Choi, T.Kobayashi, P.Stoler, T.Gresko, K.Keeter, J.H.Mitchell, B.Norum, T.P.Welch, H.T.Chung, J.C.Kim, H.B.van den Brink, W.H.A.Hesselink, J.C.Bergstrom, E.L.Hallin, H.S.Kaplan, D.M.Skopik, J.M.Vogt Negative Pion Photoproduction from 15N in the Region of the Δ Resonance NUCLEAR REACTIONS 15N(γ, π-), E=220 MeV; measured σ(θ). Models comparison.
doi: 10.1103/PhysRevC.52.199
1995VO17 Nucl.Instrum.Methods Phys.Res. A366, 100 (1995) J.M.Vogt, J.C.Bergstrom, R.Igarashi, K.J.Keeter Igloo: A neutral pion spectrometer for low energy photoproduction studies NUCLEAR REACTIONS 12C(γ, π0), E ≈ 130-165 MeV; measured total σ(E), pion yields. Lead glass Cherenkov counters used in π0 spectrometer.
doi: 10.1016/0168-9002(95)00557-9
1994BE31 Phys.Rev. C50, 2979 (1994) Photopion p-Wave Multipoles Near Threshold from 12C(γ, π0) and 1H(γ, π0) NUCLEAR REACTIONS 12C(γ, π0), E ≈ 140-200 MeV; calculated σ(E). 12C(π+, π+), E=30-80 MeV; calculated σ(θ); 12C(e, e), E not given; calculated single matter form factor; deduced nucleon isovector-multipole combination near π0-threshold.
doi: 10.1103/PhysRevC.50.2979
1994CH43 Nucl.Phys. A577, 213c (1994) H.Choi, K.Min, T.Kobayashi, P.F.Yergin, L.Y.Murphy, J.Shaw, H.Tsubota, K.Shoda, H.T.Chung, J.C.Kim, J.M.Vogt, E.M.Hallin, H.S.Caplan, J.C.Bergstrom, D.M.Skopik Positive Photopion Production from 12,13C using Tagged Photons NUCLEAR REACTIONS 13,12C(γ, π+), E=192 MeV; measured σ(θ). 12,13B deduced ΔS=1, ΔT=1 transition features.
doi: 10.1016/0375-9474(94)90858-3
1993BE42 Phys.Rev. C48, 1508 (1993) Unitarity Cusp in Proton Compton Scattering NUCLEAR REACTIONS 1H(γ, γ), E=100-300 MeV; calculated σ(θ), Compton scattering; deduced Wigner cusp evidence.
doi: 10.1103/PhysRevC.48.1508
1993HA31 Phys.Rev. C48, 1497 (1993) E.L.Hallin, D.Amendt, J.C.Bergstrom, H.S.Caplan, R.Igarashi, D.M.Skopik, E.C.Booth, D.Delli Carpini, J.P.Miller, F.J.Federspiel, B.E.MacGibbon, A.M.Nathan Compton Scattering from the Proton NUCLEAR REACTIONS 1H(γ, γ), E=136-289 MeV bremsstrahlung; measured σ(θ), Compton scattering. 1H deduced electric, magnetic polarizabilities.
doi: 10.1103/PhysRevC.48.1497
1991BE23 Phys.Rev. C44, 1768 (1991) p(γ, π0) Cross Section and the Low Energy Theorem NUCLEAR REACTIONS 1H(γ, π0), E ≈ 144-160 MeV; analyzed σ(E), σ(θ) data; deduced low-energy theorem breakdown features.
doi: 10.1103/PhysRevC.44.1768
1987AS09 Nucl.Instrum.Methods Phys.Res. A259, 480 (1987) J.Asai, J.C.Bergstrom, H.S.Caplan, D.M.Skopik Kinematics for Chicane-Beam Electron Coincidence Experiments NUCLEAR REACTIONS 2H(e, e'p), E=400-700 MeV; 3He(e, e'π+), E=150-330 MeV; 12C(e, e'p), E ≤ 900 MeV; 40Ca(e, e'p), E ≤ 350 MeV; calculated azimuthal angle vs incident electron energy. Vertical chicane beam-method.
doi: 10.1016/0168-9002(87)90830-8
1984BE13 Phys.Rev. C29, 1168 (1984) J.C.Bergstrom, R.Neuhausen, G.Lahm Electroexcitation of Levels in 14N between 12 and 21 MeV NUCLEAR REACTIONS 14N(e, e'), E=112-300 MeV; measured σ(E(e'), θ) vs E. 14N levels deduced form factors, transition strengths, configuration. Comparison with pion scattering.
doi: 10.1103/PhysRevC.29.1168
1984HU07 Phys.Lett. 139B, 249 (1984) R.L.Huffman, R.S.Hicks, J.Dubach, B.Parker, M.A.Plum, G.Lahm, R.Neuhausen, J.C.Bergstrom Comparison of Isoscalar and Isovector (e, e') M1 Form Factors at High Momentum Transfer NUCLEAR REACTIONS 14N(e, e), (e, e'), E not given; measured M1 form factors. 14N deduced isoscalar, isovector transition differences. Shell model comparison.
doi: 10.1016/0370-2693(84)91073-6
1983DE53 Nucl.Phys. A411, 337 (1983) U.Deutschmann, G.Lahm, R.Neuhausen, J.C.Bergstrom Electron Scattering Studies of Magnetic Isovector Transitions in 12C at High Momentum Transfer NUCLEAR REACTIONS 12C(e, e'), E=80-330 MeV; measured σ(E, E(e'), θ). 12C deduced levels, Γ, form factors, transition current density, Γ(γ0).
doi: 10.1016/0375-9474(83)90534-1
1982BE11 Phys.Rev. C25, 1156 (1982) J.C.Bergstrom, S.B.Kowalski, R.Neuhausen Elastic Magnetic Form Factor of 6Li NUCLEAR REACTIONS 6Li(e, e'), E=80-300 MeV; measured σ(E, E(e'), θ). 6Li deduced M1 form factor, ground state current density. Cluster model, exchange currents.
doi: 10.1103/PhysRevC.25.1156
1982ZU03 Phys.Rev. C26, 1610 (1982) B.W.Zulkoskey, R.M.Sealock, H.S.Caplan, J.C.Bergstrom Electroproduction of π+ from 10B and Its Relation to Electron Scattering NUCLEAR REACTIONS 10B(e, e'π+), E=158.5-165 MeV; measured σ(θ(π), E(π)); deduced photoproduction σ(θ(π)). 10Be level deduced M1 form factor convective term.
doi: 10.1103/PhysRevC.26.1610
1980BE20 Phys.Rev. C21, 2496 (1980) Electroexcitation of 6Li with Application to the Reactions 6Li(π-, γ)1s 6He(0+, 2+) NUCLEAR REACTIONS 6Li(e, e'), E=76-141 MeV; measured σ(E, Ee', θ). 6Li levels deduced form factors, wave functions. 6He levels deduced radiative pion capture rate.
doi: 10.1103/PhysRevC.21.2496
1980BE28 Nucl.Phys. A341, 13 (1980) Inelastic Electron Scattering from 6Li Near the t-τ Threshold NUCLEAR REACTIONS 6Li(e, e'), E=102, 123 MeV; measured σ(E;Ee', θ). 6Li deduced form factor. Cluster model.
doi: 10.1016/0375-9474(80)90358-9
1980BR17 Nucl.Phys. A344, 475 (1980) W.J.Briscoe, H.Crannell, J.C.Bergstrom Elastic Electron Scattering from the Isotopes 35Cl and 37Cl NUCLEAR REACTIONS 35,37Cl(e, e'), E=116, 194 MeV; measured σ(E, θ). 35,37Cl deduced nuclear charge distributions. Enriched targets.
doi: 10.1016/0375-9474(80)90402-9
1979AN08 Nucl.Phys. A322, 237 (1979) E.J.Ansaldo, J.C.Bergstrom, R.Yen, H.S.Caplan Inelastic Electron Scattering from 10B NUCLEAR REACTIONS 10B(e, e'), E=67-194 MeV; measured σ(E;Ee', θ). 10B deduced form factors, reduced widths, multipolarities, (π-, γ) rates. Helm model. Enriched targets.
doi: 10.1016/0375-9474(79)90424-X
1979BE38 Nucl.Phys. A327, 439 (1979) J.C.Bergstrom, U.Deutschmann, R.Neuhausen Electron Scattering from the 3.65 MeV (O+, T = 1) State in 6Li at High Momentum Transfer NUCLEAR REACTIONS 6Li(e, e'), E=140-330 MeV; measured σ(E;Ee', θ). 6Li levels deduced form factors, transition current density, Γγ.
doi: 10.1016/0375-9474(79)90268-9
1979BE39 Nucl.Phys. A327, 458 (1979) 6Li Electromagnetic Form Factors and Phenomenological Cluster Models NUCLEAR REACTIONS 6Li(e, e), (e, e'), E not given; calculated longitudinal, transverse form factors. Anti-symmetrized α-d, α-t cluster models.
doi: 10.1016/0375-9474(79)90269-0
1978AN12 Phys.Rev. C18, 597 (1978) E.J.Ansaldo, J.C.Bergstrom, R.Yen Electroexcitation of Giant Resonances in 15N NUCLEAR REACTIONS 15N(e, e'), E=52-193.5 MeV; measured σ(E, Ee', θ). 15N giant resonances deduced differential form factors, strength distributions. Helm model.
doi: 10.1103/PhysRevC.18.597
1978KI01 Nucl.Phys. A297, 301 (1978) J.C.Kim, R.S.Hicks, R.Yen, I.P.Auer, H.S.Caplan, J.C.Bergstrom Electron Scattering from 17O NUCLEAR REACTIONS 17O(e, e), (e, e'), E=62.5-125 MeV; measured σ(E, θ). 17O deduced form factors, B(λ), rms charge radius. Gas target.
doi: 10.1016/0375-9474(78)90278-6
1977AN25 Can.J.Phys. 55, 2129 (1977) E.J.Ansaldo, J.C.Bergstrom, H.S.Caplan, R.Yen Electroexcitation of 15N Levels from 9.7 to 14.7 MeV NUCLEAR REACTIONS 15N(e, e'), E=60-194 MeV; measured σ(E). 15N transitions deduced form factors.
doi: 10.1139/p77-256
1977HI02 Nucl.Phys. A278, 261 (1977) R.S.Hicks, I.P.Auer, J.C.Bergstrom, H.S.Caplan Electroexcitation of Giant Resonances in 181Ta NUCLEAR REACTIONS 181Ta(e, e'), E=79-120 MeV; measured σ(E, Ee', θ). 181Ta deduced giant multipole resonance parameters, B(EL).
doi: 10.1016/0375-9474(77)90239-1
1977NO06 Nucl.Phys. A289, 275 (1977) B.E.Norum, J.C.Bergstrom, H.S.Caplan Electroexcitation of the Giant Resonance of 17O NUCLEAR REACTIONS 17O(e, e'), E=65-168 MeV; measured σ(E;Ee', θ). 17O giant resonance deduced form factors. Comparison with particle-hole model.
doi: 10.1016/0375-9474(77)90033-1
1976BE22 Nucl.Phys. A262, 196 (1976) Inelastic Electron Scattering from 6Li Near the α-d Threshold NUCLEAR REACTIONS 6Li(e, e'), E=0-8 MeV; measured σ(E, θ), θ=99.9°, 140.7°. 6Li levels deduced form factors. Comparison between form factors, α-d cluster model calculations.
doi: 10.1016/0375-9474(76)90613-8
1975BE12 Phys.Rev. C11, 1514 (1975) Second Born Approximation for Magnetic Multipole Electroexcitation NUCLEAR REACTIONS C(e, e'), E=45, 120 MeV; Ca(e, e'), E=60 MeV; Ni(e, e'), E=50 MeV; calculated Coulomb correction factors.
doi: 10.1103/PhysRevC.11.1514
1975BE42 Nucl.Phys. A251, 401 (1975) J.C.Bergstrom, I.P.Auer, R.S.Hicks Electroexcitation of the 0+ (3.562 MeV) Level of 6Li and its Application to the Reaction 6Li(γ, π+)6He NUCLEAR REACTIONS 6Li(e, e'), E=35-125 MeV; measured σ(E;Ee', θ). 6Li level deduced form factor, Γ.
doi: 10.1016/0375-9474(75)90537-0
1975KI09 Nucl.Phys. A246, 282 (1975) J.C.Kim, H.S.Caplan, J.C.Bergstrom Low Lying Octupole Excitations in 15N NUCLEAR REACTIONS 15N(e, e'), E=84-122 MeV; measured σ(E, Ee', θ). 15N levels deduced form factors, deduced B(E3) values. 15N gas target.
doi: 10.1016/0375-9474(75)90646-6
1975KL10 Nucl.Phys. A255, 435 (1975) F.J.Kline, I.P.Auer, J.C.Bergstrom, H.S.Caplan Electron Scattering from 70Ge and 72Ge NUCLEAR REACTIONS 70,72Ge(e, e'), E=84-120 MeV; measured σ(E, Ee', θ). 70,72Ge deduced levels, J, π, B(E2), B(E3), ground-state charge density, form factors. Enriched 70,72Ge targets.
doi: 10.1016/0375-9474(75)90691-0
1974BE21 Phys.Rev. C9, 2435 (1974) Magnetic Moment of the Deuteron and Spin-Orbit Potentials NUCLEAR MOMENTS 2H; calculated μ. Percentage d state deduced.
doi: 10.1103/PhysRevC.9.2435
1973BE19 Phys.Rev. C7, 2228 (1973) J.C.Bergstrom, I.P.Auer, M.Ahmad, F.J.Kline, J.H.Hough, H.S.Caplan, J.L.Groh Electroexcitation of 9Be Levels in the 14- 18-MeV Region NUCLEAR REACTIONS 9Be(e, e'), E=62-122 MeV; measured σ(E;E(e')). 9Be levels deduced form factors, radius, quadrupole moment, level-width.
doi: 10.1103/PhysRevC.7.2228
1973BE49 Nucl.Phys. A213, 609 (1973) J.C.Bergstrom, I.P.Auer, F.J.Kline, H.S.Caplan Electroexcitation of 16O Levels Near 10 MeV Excitation NUCLEAR REACTIONS 16O(e, e'), E=100-126 MeV; measured σ(E;Ee', θ); deduced form factors. 16O deduced β2, β4 deformations, level-width. BeO target.
doi: 10.1016/0375-9474(73)90755-0
1973BE50 Nucl.Phys. A215, 232 (1973) Form Factors of the 2+ (11.52 MeV) and 0+ (12.05 MeV) Levels of 16O NUCLEAR REACTIONS 16O(e, e'), E=101-126 MeV; measured σ(E;Ee', θ); deduced form factors. BeO target.
doi: 10.1016/0375-9474(73)90652-0
1971BE51 Phys.Rev. C4, 1514 (1971) J.C.Bergstrom, H.Crannell, F.J.Kline, J.T.O'Brien, J.W.Lightbody, Jr., S.P.Fivozinsky Electroexcitation of the Giant Resonance of 13C NUCLEAR REACTIONS 12,13C(e, e'), E=55, 77, 81, 106 MeV; measured σ(Ee'). 13C deduced resonances, level-width, giant resonance structure.
doi: 10.1103/PhysRevC.4.1514
1970BE03 Phys.Rev.Lett. 24, 152 (1970) J.C.Bergstrom, W.Bertozzi, S.Kowalski, X.K.Maruyama, J.W.Lightbody, Jr., S.P.Fivozinsky, S.Penner Electroexcitation of the Low-Lying States of O16 NUCLEAR REACTIONS 16O(e, e'), E=51-105 MeV; measured σ(E;E'); deduced inelastic form factors. 16O levels deduced deformation parameters.
doi: 10.1103/PhysRevLett.24.152
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