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Search: Author = R.R.Johnson

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2001AM01      Nucl.Phys. A684, 386c (2001)

A.Ambardar, F.Duncan, A.Feltham, G.Hofman, R.R.Johnson, G.Jones, J.B.Lange, M.Pavan, K.J.Raywood, D.Vetterli, J.T.Brack, D.Ottewell, G.R.Smith, M.E.Sevior

Measurement of π p → ππ n Cross-Sections Near Threshold

NUCLEAR REACTIONS 1H(π-, π+π-), (π+, 2π+), E=176-200 MeV; measured σ; deduced reaction matrix elements, scattering lengths.

doi: 10.1016/S0375-9474(01)00403-1
Citations: PlumX Metrics


2000LA03      Phys.Rev. C61, 025201 (2000)

J.B.Lange, A.Ambardar, F.Duncan, A.Feltham, G.Hofman, R.R.Johnson, G.Jones, M.Pavan, K.J.Raywood, D.Vetterli, J.T.Brack, D.Ottewell, G.R.Smith, M.E.Sevior

Determination of the π±p → π±π+n Cross Section Near Threshold

NUCLEAR REACTIONS 1H(π-, π+π-), E=176-200 MeV; 1H(π+, 2π+), E=184, 200 MeV; measured total σ; deduced reaction matrix elements, scattering lengths. Heavy baryon chiral perturbation theory. Comparisons with previous results.

doi: 10.1103/PhysRevC.61.025201
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1998KE06      Phys.Rev. C58, 3419 (1998)

M.Kermani, P.A.Amaudruz, F.Bonutti, J.T.Brack, P.Camerini, L.Felawka, E.Fragiacomo, E.F.Gibson, N.Grion, G.J.Hofman, R.R.Johnson, E.L.Mathie, S.McFarland, R.Meier, D.Ottewell, K.J.Raywood, R.Rui, M.E.Sevior, G.R.Smith, R.Tacik, and the CHAOS Collaboration

Exclusive Measurements of π±p → π+π±n Near Threshold

NUCLEAR REACTIONS 1H(π-, π-π+), (π+, 2π+), E=223, 243, 264, 284, 305 MeV; measured σ(θ(1)-θ(2)), σ(m2), σ(t), total σ; deduced model parameters.

doi: 10.1103/PhysRevC.58.3419
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1998LA01      Phys.Rev.Lett. 80, 1597 (1998)

J.B.Lange, F.Duncan, A.Ambardar, A.Feltham, G.Hofman, R.R.Johnson, G.Jones, M.Pavan, K.J.Raywood, D.Vetterli, J.T.Brack, D.Ottewell, G.R.Smith, M.E.Sevior

Determination of the π± p → π±π+n Cross Section Near Threshold

NUCLEAR REACTIONS 1H(π-, nπ+π-), (π+, n2π+), E = 180-200 MeV; measured σ; deduced matrix elements, pion-pion scattering lengths.

doi: 10.1103/PhysRevLett.80.1597
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1996HA04      Phys.Rev. C53, 1074 (1996)

H.Hahn, A.Altman, D.Ashery, G.Gefen, D.R.Gill, R.R.Johnson, R.Levy-Nathansohn, M.A.Moinester, M.Sevior, R.P.Trelle

Pion Absorption on 3He at Low Energies

NUCLEAR REACTIONS 3He(π+, 2p), (π-, np), E=37 MeV; measured (nucleon)(nucleon)-coin; deduced two, three-nucleon, final state interaction components contributions.

doi: 10.1103/PhysRevC.53.1074
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1994KO06      Phys.Rev. C49, 1715 (1994)

M.Kohler, B.E.King, N.R.Stevenson, R.B.Schubank, Y.M.Shin, R.A.Ristinen, P.Amaudruz, P.P.J.Delheij, D.C.Healey, B.K.Jennings, D.F.Ottewell, G.Sheffer, G.R.Smith, G.D.Wait, J.T.Brack, A.Feltham, M.Hanna, R.R.Johnson, F.M.Rozon, V.Sossi, D.Vetterli, P.Weber, N.Grion, R.Rui, E.L.Mathie, R.Tacik, M.Yeomans, C.A.Gossett, G.J.Wagner, J.M.Lee, K.S.Chung

Vector Analyzing Power iT11 in πd Elastic Scattering at 49 MeV

NUCLEAR REACTIONS 2H(π+, π+), (π-, π-), E=49 MeV; measured iT11(θ); deduced πNP11 amplitude role. Model comparison. Dynamically polarized target, magnetic spectrometer.

doi: 10.1103/PhysRevC.49.1715
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1993FR02      Phys.Lett. 302B, 18 (1993)

E.Friedman, M.Paul, M.Schechter, A.Altman, B.K.Jennings, G.J.Wagner, N.Fazel, R.R.Johnson, N.Suen, Z.Fraenkel

Integral Cross Sections for π-p Interaction in the 3, 3 Resonance Region

NUCLEAR REACTIONS 1H(π-, X), E=126-202 MeV; measured total, single charge exchange σ. Model comparison.

doi: 10.1016/0370-2693(93)90629-V
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetA0749.


1993SE10      Phys.Rev. D48, 3987 (1993)

M.E.Sevior, A.Ambardar, J.T.Brack, P.Camerini, F.Duncan, J.Ernst, A.Feltham, N.Grion, R.R.Johnson, G.Koch, O.Meirav, D.F.Ottewell, R.Rui, G.R.Smith, V.Sossi, D.Theis, D.Vetterli

Experimental Study of the Near Threshold π+p → π+π+n Cross Section and Chiral Symmetry

NUCLEAR REACTIONS 1H(π+, 2π+), E=180-200 MeV; measured σ(E); deduced ππ-amplitude, scattering length. Quark loop anomalies dominance model.

doi: 10.1103/PhysRevD.48.3987
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1993SO01      Phys.Lett. 298B, 287 (1993)

V.Sossi, N.Fazel, R.R.Johnson, M.J.Vicente-Vacas

1H(π, 2π) Cross Sections with ππ Scattering Derived from Chiral Lagrangians

NUCLEAR REACTIONS 1H(π+, 2π+), (π-, π-π0), (π+, π+π0), E ≈ 180-370 MeV; calculated σ(E). Isobar model, ππ-scattering from chiral Lagrangians.

doi: 10.1016/0370-2693(93)91822-5
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1992BR02      Phys.Rev. C45, 698 (1992)

J.T.Brack, A.Feltham, R.R.Johnson, G.Jones, M.A.Kermani, O.Meirav, M.Pavan, M.E.Sevior, V.Sossi, D.Vetterli, P.Weber, G.R.Smith, P.A.Amaudruz, D.Healey, D.F.Ottewell, Y.S.Wu, X.Y.Chen, S.Hoibraten, M.D.Kohler, J.J.Kraushaar, R.A.Ristinen, W.R.Smythe, E.L.Mathie, D.M.Yeomans, R.Schubank, N.R.Stevenson, E.F.Gibson

Analyzing Powers for π±-13C(pol) Scattering at T(π) = 100 MeV

NUCLEAR REACTIONS 13C(π+, π+), (π-, π-), (π+, π+'), (π-, π-'), E=100 MeV; measured analyzing power. Polarized target. Model analysis.

doi: 10.1103/PhysRevC.45.698
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1992KR11      Phys.Rev. C46, 655 (1992)

R.A.Krauss, J.Alster, D.Ashery, S.Bart, R.E.Chrien, J.C.Hiebert, R.R.Johnson, T.Kishimoto, I.Mardor, Y.Mardor, M.A.Moinester, R.Olshevsky, E.Piasetzky, P.H.Pile, R.Sawafta, R.L.Stearns, R.J.Sutter, R.Weiss, A.I.Yavin

K+ Total Cross Sections on 12C and Medium Effects in Nuclei

NUCLEAR REACTIONS 12C, 2H(K+, X), E at 450-740 MeV/c; measured σ; deduced σ ratio, nuclear medium effects role.

doi: 10.1103/PhysRevC.46.655
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1992ME13      Appl.Radiat.Isot. 43, 1420 (1992)

O.Meirav, M.Adam, E.Boaretto, S.A.Dias, R.R.Johnson, M.Paul, E.Venczel

Measurements of 129I in a Nuclear Power Reactor by Accelerator Mass Spectrometry

doi: 10.1016/0883-2889(92)90020-F
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1992SO16      Nucl.Phys. A548, 562 (1992)

V.Sossi, M.J.Iqbal, R.R.Johnson, G.Jones, M.Pavan, F.M.Rozon, M.Sevior, D.Vetterli, P.Weber, G.Sheffer, G.R.Smith, P.Camerini, N.Grion, R.Rui, N.R.Stevenson, M.J.Vicente-Vacas

Pion-Induced Pion Production on Deuterium: A quasifree process

NUCLEAR REACTIONS 2H(π+, π-), E=280 MeV; measured σ(θ(π+), θ(π-), E(π+), E(π-)). Comparison with isobar model with Fermi motion.

doi: 10.1016/0375-9474(92)90642-W
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1992VE04      Nucl.Phys. A548, 541 (1992)

D.Vetterli, R.R.Johnson, O.Meirav, M.E.Sevior, V.Sossi, P.Weber, P.Camerini, N.Grion, R.Rui, F.M.Rozon, P.Amaudruz, D.Ottewell, G.Sheffer, G.R.Smith, N.R.Stevenson, M.J.Vicente-Vacas

π+π- Coincidence Measurement in the 4He(π+, π+π-) Reaction at T(π+) = 280 MeV

NUCLEAR REACTIONS 4He(π+, π+π-), E=280 MeV; measured σ(θπ+, θπ-, Eπ+, Eπ-); deduced σ.

doi: 10.1016/0375-9474(92)90641-V
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1991FR01      Phys.Lett. 254B, 40 (1991)

E.Friedman, A.Goldring, R.R.Johnson, D.Vetterli, J.Jaki, M.Metzler, B.K.Jennings

Integral Cross Sections for π+p Interaction in the 3, 3 Resonance Region

NUCLEAR REACTIONS 1H(π+, π+), E=125.9-201.7 MeV; measured σ. Transmission method. Phase shift calculations.

doi: 10.1016/0370-2693(91)90392-4
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1991FR04      Phys.Lett. 257B, 17 (1991)

E.Friedman, A.Goldring, R.R.Johnson, O.Meirav, D.Vetterli, P.Weber, A.Altman

Total Reaction Cross Sections for 20-30 MeV Pions and the Anomaly of Pionic Atoms

NUCLEAR REACTIONS C, Ni(π-, X), E=20, 30 MeV; C, Ni(π+, X), E=30 MeV; measured reaction σ. Different potentials in model analyses.

doi: 10.1016/0370-2693(91)90850-P
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1991KR06      Europhys.Lett. 15, 11 (1991)

S.Krell, B.M.Barnett, H.Clement, J.Jaki, R.R.Johnson, C.Joram, W.Kluge, H.Matthay, M.Metzler, D.Renker, G.J.Wagner

Precision Measurements of Low-Energy Pion Scattering on Sulphur Isotopes

NUCLEAR REACTIONS 32,34S(π+, π+), (π+, π+'), (π-, π-'), (π-, π-), E=50 MeV; measured σ(θ). 32,34S deduced neutron rms radii difference. High precision. DWIA with, without Coulomb excitation.

doi: 10.1209/0295-5075/15/1/003
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1991SE07      Phys.Rev.Lett. 66, 2569 (1991)

M.E.Sevior, A.Ambardar, J.T.Brack, P.Camerini, F.Duncan, J.Ernst, A.Feltham, N.Grion, R.R.Johnson, G.Koch, O.Meirav, D.F.Ottewell, R.Rui, G.R.Smith, V.Sossi, D.Theis, D.Vetterli

Measurement of the Near-Threshold H(π+, π+π+)n Cross Section and Chiral Symmetry

NUCLEAR REACTIONS 1H(π+, 2π+), E=180-200 MeV; measured σ(E); deduced ππ scattering length. Chiral pertubation theory, quark loop anomalies dominance.

doi: 10.1103/PhysRevLett.66.2569
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1991WE04      Phys.Rev. C43, 1553 (1991)

P.Weber, J.McAlister, R.Olszewski, A.Feltham, M.Hanna, R.R.Johnson, M.Pavan, C.Ponting, F.M.Rozon, M.Sevior, V.Sossi, D.Vetterli, D.Humphrey, G.J.Lolos, Z.Papandreou, R.Tacik, D.Ottewell, G.Sheffer, G.R.Smith, Y.Mardor, S.May-Tal

Multinucleon Pion Absorption in the 4He(π+, ppp)n Reaction

NUCLEAR REACTIONS 4He(π+, 3p), E=165 MeV; measured σ(θp1, θp2, θp3), missing momentum distributions, energy spectra; deduced 3p emission, pion absorption mechanism.

doi: 10.1103/PhysRevC.43.1553
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1990FR09      Nucl.Phys. A514, 601 (1990)

E.Friedman, A.Goldring, G.J.Wagner, A.Altman, R.R.Johnson, O.Meirav, B.K.Jennings

Integral Cross Sections for π+p Interactions at Low Energies

NUCLEAR REACTIONS 1H(π+, π+), E=45-126 MeV; measured σ. Beam attenuation technique.

doi: 10.1016/0375-9474(90)90012-B
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1990JA05      Phys.Lett. 238B, 36 (1990)

J.Jaki, B.M.Barnett, H.Clement, W.Gyles, R.R.Johnson, Ch.Joram, W.Kluge, S.Krell, H.Matthay, M.Metzler, D.Renker, R.Tacik, G.J.Wagner, C.A.Wiedner, U.Wiedner

Isospin Mixing of the 1+ Doublet in 12C Determined by Low-Energy Pion Scattering

NUCLEAR REACTIONS 12C(π+, π+'), (π-, π-'), (π+, π+), (π-, π-), E=50 MeV; measured σ(θ). 12C levels deduced isospin mixing features.

doi: 10.1016/0370-2693(90)92096-2
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1990MA70      Phys.Rev.Lett. 65, 2110 (1990)

Y.Mardor, E.Piasetzky, J.Alster, D.Ashery, M.A.Moinester, A.I.Yavin, S.Bart, R.E.Chrien, P.H.Pile, R.J.Sutter, R.A.Krauss, J.C.Hiebert, R.L.Stearns, T.Kishimoto, R.R.Johnson, R.Olshevsky

K+ Total Cross Sections as a Test for Nucleon ' Swelling '

NUCLEAR REACTIONS C, 2H(K+, X), E at 450-740 MeV/c; measured σ, ratios.

doi: 10.1103/PhysRevLett.65.2110
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1990ME11      Phys.Rev. C42, 2222 (1990)

R.Meier, E.T.Boschitz, S.Ritt, R.Tacik, M.Wessler, J.A.Konter, S.Mango, D.Renker, B.van den Brandt, W.Meyer, W.Thiel, R.Mach, P.Amaudruz, R.R.Johnson, G.R.Smith, P.Weber

Pion Scattering from Polarized 15N at T(π) = 164 MeV

NUCLEAR REACTIONS 15N(π+, π+), (π+, π+'), E=164 MeV; measured σ(E(π)), σ(θ), analyzing power vs θ. Polarized 15NH3 target. Momentum space coupled-channels formalism.

doi: 10.1103/PhysRevC.42.2222
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1990RU04      Nucl.Phys. A508, 551c (1990)

R.Rui, P.Camerini, N.Grion, R.R.Johnson, V.Sossi, M.J.Vicente-Vacas

The (π, 2π) Reaction on Few Body Systems

NUCLEAR REACTIONS 2H(π+, π+π-), E at 395 MeV/c; measured σ(θ(π+), E(π+), θ(π-), E(π+)); deduced chiral symmetry breaking parameters. Model comprison.

doi: 10.1016/0375-9474(90)90517-P
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1990RU09      Nucl.Phys. A517, 455 (1990)

R.Rui, P.Camerini, N.Grion, R.R.Johnson, M.Pavan, F.M.Rozon, V.Sossi, D.Ottewell, G.Sheffer, G.Smith, N.R.Stevenson, M.J.Vicente-Vacas

π+π- Coincidence Measurement in the π+d → π+π-pp Reaction at Tπ+ = 280 MeV

NUCLEAR REACTIONS 2H(π+, π+π-), E=280 MeV; measured σ(θπ+, θπ-, Eπ+, Eπ-); deduced σ.

doi: 10.1016/0375-9474(90)90211-4
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1990ST24      Phys.Rev.Lett. 65, 1987 (1990)

N.R.Stevenson, R.B.Schubank, Y.M.Shin, P.Amaudruz, P.P.J.Delheij, D.C.Healey, B.K.Jennings, D.F.Ottewell, G.Sheffer, G.R.Smith, G.D.Wait, J.T.Brack, A.Feltham, M.Hanna, R.R.Johnson, F.M.Rozon, V.Sossi, D.Vetterli, P.Weber, N.Grion, R.Rui, M.Kohler, R.A.Ristinen, E.L.Mathie, R.Tacik, M.Yeomans, C.A.Gossett, G.J.Wagner

Role of the πN P11 Interaction in πd Elastic Scattering at 50 MeV

NUCLEAR REACTIONS 2H(π+, π+), E=50 MeV; measured iT11(θ); deduced πN(P11) interaction amplitude role. Dynamically polarized target.

doi: 10.1103/PhysRevLett.65.1987
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1990ST33      J.Phys.(Paris), Colloq.C-6, 391 (1990)

N.R.Stevenson, R.B.Schubank, Y.M.Shin, P.Amaudruz, P.P.J.Delheij, D.C.Healey, B.K.Jennings, D.F.Ottewell, G.Sheffer, G.R.Smith, G.D.Wait, N.Grion, R.Rui, J.T.Brack, A.Feltham, M.Hanna, R.R.Johnson, F.M.Rozon, V.Sossi, D.Vetterli, P.Weber, M.Kohler, R.A.Ristinen, E.L.Mathie, R.Tacik, M.Yeomans, C.A.Gossett, G.J.Wagner, B.E.King

Analyzing Power Measurements in πd Elastic Scattering at 50 MeV

NUCLEAR REACTIONS 2H(π, π), E=50 MeV; measured iT11(θ); deduced πN(P11) potential role.


1990TA25      Phys.Rev. C42, 1846 (1990)

R.Tacik, E.T.Boschitz, W.Gyles, C.R.Ottermann, M.Wessler, U.Wiedner, H.Garcilazo, R.R.Johnson

Kinematically Complete Measurement of the π+d → π0pp Charge-Exchange Reaction

NUCLEAR REACTIONS 2H(π+, π0p), E=228, 294 MeV; measured σ(θp1, θp2) vs proton momentum. Relativistic Faddeev formalism.

doi: 10.1103/PhysRevC.42.1846
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1989FR11      Phys.Lett. 231B, 39 (1989)

E.Friedman, A.Goldring, G.J.Wagner, A.Altman, R.R.Johnson, O.Meirav, M.Hanna, B.K.Jennings

Integral Cross Sections for π+p Scattering between 52 and 126 MeV

NUCLEAR REACTIONS 1H(π+, π+), E=52-126 MeV; measured σ(E). Model comparison.

doi: 10.1016/0370-2693(89)90109-3
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1989GR05      Nucl.Phys. A492, 509 (1989)

N.Grion, R.Rui, F.M.Rozon, M.Hanna, R.R.Johnson, J.McAlister, R.Olszewski, C.Ponting, M.E.Sevior, V.Sossi, D.R.Gill, G.Sheffer, M.J.Vincente-Vacas, E.Oset

Pion Production by Pions in the 16O(π+, π+π-) Reaction at T(π)+ = 280 MeV

NUCLEAR REACTIONS 16O(π+, π+π-), E=280 MeV; measured σ(θ(π)+, θ(π)-, Eπ+, Eπ-); deduced σ, missing mass.

doi: 10.1016/0375-9474(89)90107-3
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1989ME07      Phys.Rev. C40, 843 (1989)

O.Meirav, E.Friedman, R.R.Johnson, R.Olszewski, P.Weber

Low Energy Pion-Nucleus Potentials from Differential and Integral Data

NUCLEAR REACTIONS Si, Ni(π+, X), (π-, X), E=50 MeV; Ni(π-, X), (π+, X), E=65 MeV; C, Ca, Zr, Pb(π+, X), (π-, X), E=80 MeV; measured reaction σ; deduced model parmeters. Analysis of other data.

doi: 10.1103/PhysRevC.40.843
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1989PO11      Phys.Rev.Lett. 63, 1792 (1989)

C.Ponting, D.A.Hutcheon, M.A.Moinester, P.L.Walden, D.R.Gill, R.R.Johnson, F.Duncan, G.Sheffer, P.Weber, V.Sossi, A.Feltham, M.Hanna, R.Olszewski, M.Pavan, F.M.Rozon, M.Sevior, D.Ashery, R.P.Trelle, H.Hahn, B.Mayer

Analyzing-Power Measurement in p(pol)n → π-pp(1S0): Pion absorption by quark clusters ( Question )

NUCLEAR REACTIONS 2H(polarized p, 2pπ-), E=400 MeV; measured analyzing power vs (θ(π)); deduced nucleon-nucleon interaction short range component role.

doi: 10.1103/PhysRevLett.63.1792
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1989TA14      Phys.Rev. C40, 256 (1989)

R.Tacik, E.T.Boschitz, W.Gyles, W.List, C.R.Ottermann, M.Wessler, U.Wiedner, R.R.Johnson

Three-Nucleon Pion Absorption in Carbon

NUCLEAR REACTIONS 12C(π+, 3p), E=130, 180, 228 MeV; measured σ(θ1, θ2, θ3); deduced absorption σ.

doi: 10.1103/PhysRevC.40.256
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1989TA21      Phys.Rev.Lett. 63, 1784 (1989)

R.Tacik, E.T.Boschitz, R.Meier, S.Ritt, M.Wessler, K.Junker, J.A.Konter, S.Mango, D.Renker, B.van den Brandt, W.Meyer, W.Thiel, P.Chaumette, J.Deregel, G.Durand, J.Fabre, P.Amaudruz, R.R.Johnson, G.Smith, P.Weber, R.Mach

Spin Effects in π-Nucleus Scattering in the Region of the Δ(3, 3) Resonance

NUCLEAR REACTIONS 15N(π+, π+), (π+, π+'), E=164 MeV; 6Li(π+, π+), (π+, π+'), E=134, 164 MeV; measured σ(θ), vector, tensor analyzing power vs θ. Polarized targets.

doi: 10.1103/PhysRevLett.63.1784
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1989WE11      Phys.Lett. 230B, 31 (1989)

P.Weber, J.McAlister, R.Olszewski, A.Feltham, M.Hanna, D.Humphrey, R.R.Johnson, G.J.Lolos, Y.Mardor, S.May-Tal, D.Ottewell, Z.Papandreou, M.Pavan, C.Ponting, F.M.Rozon, M.Sevior, G.Sheffer, G.R.Smith, V.Sossi, R.Tacik, D.Vetterli

Multi-Nucleon Pion Absorption in the 4He(π+, ppp)n Reaction

NUCLEAR REACTIONS 4He(π+, 3p), E=165 MeV; measured proton triple coincidences, σ(θ); deduced pion absorption mechanism. Kinematically complete experiment.

doi: 10.1016/0370-2693(89)91648-1
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1989WE14      Phys.Lett. 233B, 281 (1989)

P.Weber, J.McAlister, R.Olszewski, A.Feltham, M.Hanna, D.Humphrey, R.R.Johnson, G.J.Lolos, Y.Mardor, S.May-Tal, D.Ottewell, Z.Papandreou, M.Pavan, C.Ponting, F.M.Rozon, M.Sevior, G.Sheffer, G.R.Smith, V.Sossi, R.Tacik, D.Vetterli

Multi-Nucleon Pion Absorption in the 4He(π+, ppp)n Reaction

NUCLEAR REACTIONS 4He(π+, 3p), E=165 MeV; measured σ(θ1, θ2, θ3); deduced pion absorption mechanism. Kinematically complete experiment.

doi: 10.1016/0370-2693(89)91310-5
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1988LI08      Phys.Rev. C37, 1587 (1988)

W.List, E.T.Boschitz, H.Garcilazo, W.Gyles, C.R.Ottermann, R.Tacik, M.Wessler, U.Wiedner, R.R.Johnson

Neutron-Proton Final-State Interaction in πd Breakup: Differential cross section

NUCLEAR REACTIONS 2H(π+, np), E=294 MeV; measured σ(θ(π), θp) vs proton momentum; deduced np-final state interaction role. Kinematically complete experiment.

doi: 10.1103/PhysRevC.37.1587
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1988SM04      Phys.Rev. C38, 240 (1988)

G.R.Smith, D.R.Gill, D.Ottewell, G.D.Wait, P.Walden, R.R.Johnson, R.Olszewski, R.Rui, M.E.Sevior, R.P.Trelle, J.Brack, J.J.Kraushaar, R.A.Ristinen, H.Chase, E.L.Mathie, V.Pafilis, R.B.Schubank, N.R.Stevenson, A.Rinat, Y.Alexander

Energy Dependence of the Charge Asymmetry A(T(π), θ) in πd Elastic Scattering

NUCLEAR REACTIONS 2H(π+, π+), (π-, π-), E=143-256 MeV; measured charge asymmetry vs E, θ; deduced Δ-isobar parameters.

doi: 10.1103/PhysRevC.38.240
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1988SM05      Phys.Rev. C38, 251 (1988)

G.R.Smith, D.R.Gill, D.Healey, D.Ottewell, G.D.Wait, P.Walden, R.R.Johnson, G.Jones, R.Olszewski, F.M.Rozon, R.Rui, M.E.Sevior, R.P.Trelle, E.L.Mathie, G.Lolos, S.I.H.Naqvi, V.Pafilis, N.R.Stevenson, R.B.Schubank, W.Gyles, C.R.Ottermann, G.S.Kyle

Energy Dependence of T20 and τ21 in πd(pol) Elastic Scattering

NUCLEAR REACTIONS 2H(π, π), E=134-256 MeV; measured tensor analyzing power vs θ; deduced pion absorption role. Tensor polarized target.

doi: 10.1103/PhysRevC.38.251
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1987GR23      Phys.Rev.Lett. 59, 1080 (1987)

N.Grion, R.Rui, F.M.Rozon, T.Anderl, J.Ernst, D.R.Gill, M.Hanna, J.J.Kraushaar, R.R.Johnson, R.Olszewski, M.E.Sevior, G.Sheffer, G.R.Smith, R.P.Trelle, Z.Wu

Measurement of the 16O(π+, π+π-) Reaction at T(π+) = 280 MeV

NUCLEAR REACTIONS 16O(π+, π+π-), E=280 MeV; measured σ(E(π+), θ(π+), θ(π-)), σ(E(π+)). Tof.

doi: 10.1103/PhysRevLett.59.1080
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1987ME12      Phys.Rev. C36, 1066 (1987)

O.Meirav, E.Friedman, A.Altman, M.Hanna, R.R.Johnson, D.R.Gill

Total Reaction Cross Sections of 50 and 65 MeV Pions on Nuclei

NUCLEAR REACTIONS C, O, 18O, S, Ca, Zr(π+, X), (π-, X), E=50, 65 MeV; measured reaction σ. Ca(π-, π-), E=50 MeV; measured σ(θ); deduced elastic corrections.

doi: 10.1103/PhysRevC.36.1066
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1987ME20      Phys.Lett. 199B, 9 (1987)

O.Meirav, E.Friedman, A.Altman, M.Hanna, R.R.Johnson, D.R.Gill

Pion-Nucleus Potentials in the Energy Range of 0-80 MeV

NUCLEAR REACTIONS 64Ni, 40Ca, 90Zr(π+, π+), (π-, π-), E=65, 80 MeV; 208Pb(π+, π+), (π-, π-), E=30, 80 MeV; calculated σ(θ); deduced potential parameters. Optical model.

doi: 10.1016/0370-2693(87)91453-5
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1987SM02      Nucl.Instrum.Methods Phys.Res. A254, 263 (1987)

G.R.Smith, P.Delheij, D.R.Gill, D.Healey, D.Ottewell, G.D.Wait, P.Walden, R.R.Johnson, G.Jones, F.M.Rozon, M.Sevior, F.Tervisidis, R.P.Trelle, E.L.Mathie, S.I.H.Naqvi, G.J.Lolos, C.R.Otterman, E.T.Boschitz, G.S.Kyle, P.A.Amaudruz

Direct Measurement of the Tensor Polarization of a Polarized Deuteron Target

NUCLEAR MOMENTS 2H; measured NMR; deduced vector polarization. Polarized target, 2H(π, 2p) data input.

doi: 10.1016/0168-9002(87)90673-5
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1987SM04      Phys.Rev. C35, 2343 (1987)

G.R.Smith, D.R.Gill, D.Healey, D.Ottewell, G.D.Wait, P.Walden, R.R.Johnson, G.Jones, R.Olszewski, F.M.Rozon, R.Rui, M.E.Sevior, R.P.Trelle, E.L.Mathie, G.J.Lolos, C.R.Ottermann, W.Gyles, G.S.Kyle

Measurement of the Tensor Analyzing Power T21 in πd Elastic Scattering

NUCLEAR REACTIONS 2H(π, π), E=180 MeV; measured σ(Ed), T21(θ). Polarized target. Faddeev calculations.

doi: 10.1103/PhysRevC.35.2343
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1987WI01      Phys.Rev. C35, 708 (1987)

U.Wienands, N.Hessey, B.M.Barnett, F.M.Rozon, H.W.Roser, A.Altman, R.R.Johnson, D.R.Gill, G.R.Smith, C.A.Wiedner, D.M.Manley, B.L.Berman, H.J.Crawford, N.Grion

Elastic and Inelastic Scattering of 50-MeV Pions from 28Si and 30Si

NUCLEAR REACTIONS 28,30Si(π+, π+), (π+, π+'), (π-, π-), (π-, π-'), E=50 MeV; measured σ(θ); deduced model parameters. 28,30Si levels deduced neutron, proton transition matrix element ratio. Enriched targets. Optical model analyses.

doi: 10.1103/PhysRevC.35.708
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1986AN11      Phys.Rev. C33, 1714 (1986)

K.A.Aniol, A.Altman, R.R.Johnson, H.W.Roser, R.Tacik, U.Wienands, D.Ashery, J.Alster, M.A.Moinester, E.Piasetzky, D.R.Gill, J.Vincent

Pion Absorption of 3He at T(π) = 62.5 and 82.8 MeV

NUCLEAR REACTIONS 3He(π+, pn), (π-, pn), E=62.5, 82.8 MeV; measured σ(Ep, θp). 3He(π-, n), E=62.5, 82.8 MeV; measured breakup σ; deduced three-body absorption σ, reaction mechanism.

doi: 10.1103/PhysRevC.33.1714
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1986BR29      Phys.Rev. C34, 1771 (1986)

J.T.Brack, J.J.Kraushaar, J.H.Mitchell, R.J.Peterson, R.A.Ristinen, J.L.Ullmann, D.R.Gill, R.R.Johnson, D.Ottewell, F.M.Rozon, M.E.Sevior, G.R.Smith, F.Tervisidis, R.P.Trelle, E.L.Mathie

πp Elastic Scattering from 67 to 139 MeV

NUCLEAR REACTIONS 1H(π+, π+), (π-, π-), E=66.8-138.8 MeV; measured σ(θ).

doi: 10.1103/PhysRevC.34.1771
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1986GY01      Phys.Rev. C33, 583 (1986)

W.Gyles, E.T.Boschitz, H.Garcilazo, W.List, E.L.Mathie, C.R.Ottermann, G.R.Smith, R.Tacik, R.R.Johnson

π+d → π+pn Reaction as a Test of Relativistic Faddeev Theories: Differential cross section

NUCLEAR REACTIONS 2H(π+, π+p), E=228, 294 MeV; measured σ(θπ, θp) vs proton momentum; deduced nonconventional dynamics insignificance. Faddeev method.

doi: 10.1103/PhysRevC.33.583
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1986GY02      Phys.Rev. C33, 595 (1986)

W.Gyles, E.T.Boschitz, H.Garcilazo, E.L.Mathie, C.R.Ottermann, G.R.Smith, S.Mango, J.A.Konter, R.R.Johnson

π+d → π+pn Reaction as a Test of Relativistic Faddeev Theories: Vector analyzing power

NUCLEAR REACTIONS 2H(π+, π+p), E=180, 228, 294 MeV; measured vector analysing power iT11(θπ, θp), σ(θπ, θp) vs proton momentum. Relativistic Faddeev method.

doi: 10.1103/PhysRevC.33.595
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1986SM06      Phys.Rev.Lett. 57, 803 (1986)

G.R.Smith, A.Altman, P.Delheij, D.R.Gill, D.Healey, R.R.Johnson, G.Jones, D.Ottewell, F.M.Rozon, M.E.Sevior, F.Tervisidis, R.P.Trelle, G.D.Wait, P.Walden, E.L.Mathie, G.J.Lolos, S.I.H.Naqvi, E.T.Boschitz, C.R.Ottermann, G.S.Kyle, P.A.Amaudruz

Tensor Analyzing Power in πd Elastic Scattering

NUCLEAR REACTIONS 2H(π, π), E=138, 150.9 MeV; measured tensor analyzing power vs θ. Tensor polarized target. Faddeev calculations.

doi: 10.1103/PhysRevLett.57.803
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1985AL15      Phys.Rev.Lett. 55, 1273 (1985)

A.Altman, R.R.Johnson, U.Wienands, N.Hessey, B.M.Barnett, B.M.Forster, N.Grion, D.Mills, F.M.Rozon, G.R.Smith, R.P.Trelle, D.R.Gill, G.Sheffer, T.Anderl

Observation of the Double Isobaric Analog Transition 18O(π+, π-)18Ne at 50 MeV

NUCLEAR REACTIONS 18O(π+, π-), E=50 MeV; measured σ(θ). 18Ne deduced double IAS excitation. Six-quark bag model calculations, comparison with data on 14C.

doi: 10.1103/PhysRevLett.55.1273
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1985BA27      Phys.Lett. 156B, 172 (1985)

B.M.Barnett, W.Gyles, R.R.Johnson, R.Tacik, K.L.Erdman, H.W.Roser, D.R.Gill, E.W.Blackmore, S.Martin, C.A.Wiedner, R.J.Sobie, T.E.Drake, J.Alster

Density Distribution Differences of Protons in 16,18O from Ratios of π+ Elastic Scattering Cross Sections

NUCLEAR REACTIONS 16,18O(π+, π+), E=48.3, 62.8 MeV; measured σ(θ), ratios. 18,16O deduced proton density distribution differences.

doi: 10.1016/0370-2693(85)91503-5
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1985GY02      Nucl.Phys. A439, 598 (1985)

W.Gyles, B.M.Barnett, R.Tacik, K.L.Erdman, R.R.Johnson, G.J.Lolos, H.Roser, K.A.Aniol, F.Entezami, E.L.Mathie, D.R.Gill, E.W.Blackmore, C.A.Wiedner, S.Martin, R.J.Sobie, T.E.Drake

Neutron Density Difference Measurements for 26,24Mg and 36,34,32S using Low-Energy Pions

NUCLEAR REACTIONS 36,34,32S(π-, π-), E=48.4 MeV; 26,24Mg(π-, π-), E=43.9 MeV; measured σ(θ) ratios. 36,34,32S, 26,24Mg deduced neutron density differences.

doi: 10.1016/0375-9474(85)90329-X
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1985MA17      Phys.Lett. 154B, 28 (1985)

E.L.Mathie, G.R.Smith, E.T.Boschitz, W.Gyles, C.R.Ottermann, S.Mango, J.A.Konter, A.Matsuyama, R.R.Johnson, R.Olszewski

First Measurement of iT11 in the Pion-Deuteron Breakup Reaction

NUCLEAR REACTIONS 2H(π+, π+p), E=228 MeV; measured σ(θ), iT11(θ), σ(θp, θ(π)) vs proton momentum. Polarized target, kinematically complete experiment.

doi: 10.1016/0370-2693(85)91561-8
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1985OT04      Phys.Rev. C32, 928 (1985)

C.R.Ottermann, E.T.Boschitz, W.Gyles, W.List, R.Tacik, R.R.Johnson, G.R.Smith, E.L.Mathie

Large Angle πd Scattering in the Region of the (3, 3) Resonance

NUCLEAR REACTIONS 2H(π+, π+), E=124-324 MeV; measured σ(θ). Comparison with Faddeev calculation.

doi: 10.1103/PhysRevC.32.928
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1984MO03      Phys.Rev.Lett. 52, 1203 (1984)

M.A.Moinester, D.R.Gill, J.Vincent, D.Ashery, S.Levenson, J.Alster, A.Altman, J.Lichtenstadt, E.Piasetzky, K.A.Aniol, R.R.Johnson, H.W.Roser, R.Tacik, W.Gyles, B.Barnett, R.J.Sobie, H.P.Gubler

Isospin Dependence of Pion Absorption on Nucleon Pairs at T(π) = 65 MeV

NUCLEAR REACTIONS 3He(π+, 2p), (π-, np), E=65 MeV; measured pp-, pn-coin, σ(θp1, Ep2), σ(θn, Ep); deduced σ(reaction) ratio, isospin dependence.

doi: 10.1103/PhysRevLett.52.1203
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1984SM06      Phys.Rev. C30, 980 (1984)

G.R.Smith, E.L.Mathie, E.T.Boschitz, C.R.Ottermann, W.Gyles, W.List, S.Mango, J.A.Konter, B.van den Brandt, R.Olszewski, R.R.Johnson

Vector Analyzing Power iT11 in the πd → 2p Reaction between 112 and 325 MeV

NUCLEAR REACTIONS 2H(π, 2p), E=112-325 MeV; measured recoil deuteron iT11(θ). Faddeev calculation comparison.

doi: 10.1103/PhysRevC.30.980
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1984SO06      Nucl.Instrum.Methods 219, 501 (1984)

R.J.Sobie, T.E.Drake, B.M.Barnett, K.L.Erdman, W.Gyles, R.R.Johnson, H.W.Roser, R.Tacik, E.W.Blackmore, D.R.Gill, S.Martin, C.A.Wiedner, T.Masterson

The TRIUMF Low Energy Pion Spectrometer and Channel

NUCLEAR REACTIONS 12C(π-, π-'), E=50 MeV; measured σ(E(π')). Low energy pion spectrometer.

doi: 10.1016/0167-5087(84)90221-7
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1984SO12      Phys.Lett. 143B, 338 (1984)

R.J.Sobie, T.E.Drake, J.Gaydos, R.R.Johnson, R.Tacik, D.R.Gill, B.K.Jennings, N.de Takacsy

Study of the Pion-Nucleus Reaction Mechanism with 12C(π, π'γ)

NUCLEAR REACTIONS 12C(π+, π+'), E=65, 90 MeV; measured σ(θ(π), θγ); deduced nuclear matter density role, pion-nuclear reaction mechanism role.

doi: 10.1016/0370-2693(84)91478-3
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1984SO13      Phys.Rev. C30, 1612 (1984)

R.J.Sobie, T.E.Drake, K.L.Erdman, R.R.Johnson, H.W.Roser, R.Tacik, E.W.Blackmore, D.R.Gill, S.Martin, C.A.Wiedner, T.Masterson

Elastic and Inelastic Scattering of 50 MeV Pions from 12C, 32S, and 34S

NUCLEAR REACTIONS 12C, 32,34S(π+, π+), (π+, π+'), (π-, π-), (π-, π-'), E=50 MeV; measured σ(θ); deduced neutron, proton matrix elements. Optical, distorted wave model analyses.

doi: 10.1103/PhysRevC.30.1612
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1984TA03      Phys.Rev.Lett. 52, 1276 (1984)

R.Tacik, K.L.Erdman, R.R.Johnson, H.W.Roser, D.R.Gill, E.W.Blackmore, R.J.Sobie, T.E.Drake, S.Martin, C.A.Wiedner

Sensitivity of Low-Energy π± Inelastic Scattering

NUCLEAR REACTIONS 26Mg(π+, π+'), (π-, π-'), E=50 MeV; measured σ(θ); deduced neutron, proton deformation sensitivity. 26Mg level deduced neutron to proton matrix element ratio, σ(π+)/σ(π-) vs (β(p)/β(n)). DWIA.

doi: 10.1103/PhysRevLett.52.1276
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1983LO10      Phys.Lett. 126B, 20 (1983)

G.J.Lolos, R.R.Johnson, P.Couvert, J.McKenna, R.Myers, I.Spadinger, P.Lorrain

Energy Dependence of the 6Li(π+,3He)3He Reaction at 60, 75 and 90 MeV

NUCLEAR REACTIONS 6Li(π+,3He), E=60, 75, 90 MeV; measured σ(θ) vs E. Pionic fission, cluster absorption model comparison.

doi: 10.1016/0370-2693(83)90007-2
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1983MA14      Nucl.Phys. A397, 469 (1983)

E.L.Mathie, G.Jones, T.Masterson, D.Ottewell, P.Walden, E.G.Auld, A.Haynes, R.R.Johnson

Pion Production from Hydrogen Bombarded by Polarized Protons at Intermediate Energies

NUCLEAR REACTIONS 1H(polarized p, π+), E=305-425 MeV; measured σ(θ), σ(Eπ, θ), A(θ).

doi: 10.1016/0375-9474(83)90612-7
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1983NA18      Phys.Rev. C28, 2548 (1983)

I.Navon, D.Ashery, J.Alster, G.Azuelos, B.M.Barnett, W.Gyles, R.R.Johnson, D.R.Gill, T.G.Masterson

True Absorption and Scattering of 50 Mev Pions

NUCLEAR REACTIONS C, Fe, Bi(π+, π+'), (π-, π-'), (π+, X), E=50 MeV; Li, Nb(π+, π+'), (π+, X), E= 50 MeV; measured σ(θ), transmission; deduced σ(absorption), large σ(π-)/σ(π+).

doi: 10.1103/PhysRevC.28.2548
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1982GI08      Phys.Rev. C26, 1306 (1982)

D.R.Gill, K.L.Erdman, E.W.Blackmore, W.Gyles, B.M.Barnett, C.Oram, R.R.Johnson, T.G.Masterson, N.Grion

Elastic Scattering of 13.9 MeV Positive Pions from 12C

NUCLEAR REACTIONS 12C(π+, π+), E=13.9 MeV; measured σ(θ); deduced absorption parameters. Optical model analysis.

doi: 10.1103/PhysRevC.26.1306
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1981BO01      Phys.Rev.Lett. 46, 167 (1981)

J.Bolger, E.Boschitz, G.Probstle, G.R.Smith, S.Mango, F.Vogler, R.R.Johnson, J.Arvieux

Evidence for a Dibaryon Signal in the Measurement of Elastic π+-d(pol) Scattering

NUCLEAR REACTIONS 2H(π+, π+), E=142, 256 Mev; measured vector analyzing power vs θ; deduced dibaryon resonance effects at high energy. Faddeev calculations at low energies. Polarized target.

doi: 10.1103/PhysRevLett.46.167
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1980AU07      Phys.Lett. 93B, 258 (1980)

E.G.Auld, R.R.Johnson, G.Jones, E.L.Mathie, P.Walden, D.Hutcheon, P.Kitching, W.C.Olsen, C.F.Perdrisat, B.Tatischeff

Differential Cross Section and Analyzing Power for Backward Pions in 2H(p, π+)3H

NUCLEAR REACTIONS 2H(polarized p, π+), E=400, 425, 443, 470 MeV; measured σ(θ), analyzing power vs θ. Two-nucleon model calculations.

doi: 10.1016/0370-2693(80)90508-0
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1980BA45      Phys.Lett. B97, 45 (1980)

B.M.Barnett, W.Gyles, R.R.Johnson, K.L.Erdman, J.Johnstone, J.J.Kraushaar, S.Lepp, T.G.Masterson, E.Rost, D.R.Gill, A.W.Thomas, J.Alster, I.Navon, R.H.Landau

Proton Radii Determinations from the Ratio of π+ Elastic Scattering from 11B and 12C

NUCLEAR REACTIONS 12C, 11B(π+, π+), E=38.6, 47.7 MeV; measured σ(θ). 12C, 11B deduced rms charge radii differences.

doi: 10.1016/0370-2693(80)90543-2
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1980FR06      Phys.Lett. 91B, 345 (1980)

R.Frascaria, I.Brissaud, J.P.Didelez, C.Perrin, J.L.Beveridge, J.P.Egger, F.Goetz, P.Gretillat, R.R.Johnson, C.Lunke, E.Schwarz, B.M.Preedom

Search for the Dibaryon Resonance Signals in the π+-D Excitation Function at 180°

NUCLEAR REACTIONS 1,2H(π+, π+), E=130-280 MeV; measured σ(E, θ), θ=180°; deduced evidence for dibaryon resonance.

doi: 10.1016/0370-2693(80)90992-2
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1980FR15      Helv.Phys.Acta 53, 293 (1980)

R.Frascaria, I.Brissaud, J.-P.Didelez, C.Perrin, J.L.Beveridge, J.-P.Egger, F.Goetz, P.Gretillat, R.R.Johnson, C.Lunke, E.Schwarz, B.M.Preedom

Search for Dibaryon Resonance Signals in the π+ → d Excitation Function at 180°

NUCLEAR REACTIONS 1,2H(π+, π+), E=130-280 MeV; measured σ(E).


1980MA42      Z.Phys. A298, 149 (1980)

N.Marty, M.Morlet, A.Willis, C.Perrin, J.L.Beveridge, J.P.Egger, F.Goetz, P.Gretillat, R.R.Johnson, C.Lunke, E.Schwarz

Excitation of Isovector Giant Resonances by Inelastic Scattering of Positive Pions on 90Zr at 226 MeV

NUCLEAR REACTIONS 90Zr(π+, π+'), E=226 MeV; measured σ(E(π+'), θ). 90Zr deduced GDR, isovector, isoscalar giant quadrupole, monopole resonances, widths. DWBA calculations.

doi: 10.1007/BF01554055
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1980MA46      Helv.Phys.Acta 53, 298 (1980)

N.Marty, M.Morlet, A.Willis, C.Perrin, J.L.Beveridge, J.-P.Egger, F.Goetz, P.Gretillat, R.R.Johnson, C.Lunke, E.Schwarz

Excitation of Giant Resonances by Inelastic Pion Scattering

NUCLEAR REACTIONS 90Zr(π+, π+'), E=226 MeV; measured σ(E(π+'), θ). 90Zr deduced T=0, 1 giant resonances.


1979AU02      Can.J.Phys. 57, 73 (1979)

E.G.Auld, D.Axen, J.Beveridge, G.Duesdieker, L.Felawka, C.H.Q.Ingram, R.R.Johnson, G.Jones, D.LePatourel, R.Orth, M.Salomon, W.Westlund, L.P.Robertson

π+-p Elastic Scattering at 47.9 MeV

NUCLEAR REACTIONS 1H(π+, π+), E=47.9 MeV; measured σ(θ); deduced phase shifts.

doi: 10.1139/p79-008
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1979JO04      Can.J.Phys. 57, 775 (1979)

R.R.Johnson, T.Marks, T.G.Masterson, B.Bassalleck, K.L.Erdman, W.Gyles, D.Gill, C.Sabev

Elastic Scattering of 29 MeV Negative Pions from 208Pb

NUCLEAR REACTIONS 208Pb(π-, π-), E=29 MeV; measured σ(θ).

doi: 10.1139/p79-109
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1979JO08      Phys.Rev.Lett. 43, 844 (1979)

R.R.Johnson, T.Masterson, B.Bassalleck, W.Gyles, T.Marks, K.L.Erdman, A.W.Thomas, D.R.Gill, E.Rost, J.J.Kraushaar, J.Alster, C.Sabev, J.Arvieux, M.Krell

Neutron Radii Determinations from the Ratio of π- Elastic Scattering From 12,13C and 16,18O

NUCLEAR REACTIONS 12,13C(π-, π-), E=29.2-49.5 MeV; 16,18O(π-, π-), E=29.2 MeV; measured σ(θ). 13C, 18O deduced neutron radii relative to 12C, 16O. Optical model analysis.

doi: 10.1103/PhysRevLett.43.844
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1979WA03      Phys.Lett. 81B, 156 (1979)

P.Walden, D.Ottewell, E.L.Mathie, T.Masterson, G.Jones, R.R.Johnson, A.Haynes, E.G.Auld

The Polarized p + p → d + π+ Reaction with a Polarized Proton Beam

NUCLEAR REACTIONS 1H(polarized p, π+), E=305-425 MeV; measured σ(θ), A(θ); deduced production σ for d-wave pion.

doi: 10.1016/0370-2693(79)90511-2
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1978AU07      Phys.Rev.Lett. 41, 462 (1978)

E.G.Auld, A.Haynes, R.R.Johnson, G.Jones, T.Masterson, E.L.Mathie, D.Ottewell, P.Walden, B.Tatischeff

Production of Positive Pions from the Bombardment of 9Be and 12C with 200-MeV Polarized Protons

NUCLEAR REACTIONS 9Be, 12C(polarized p, π+), E=200 MeV; measured σ(θ).

doi: 10.1103/PhysRevLett.41.462
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1978JO03      Nucl.Phys. A296, 444 (1978)

R.R.Johnson, T.G.Masterson, K.L.Erdman, A.W.Thomas, R.H.Landau

Elastic Scattering of Positive Pions from 12C at 30, 40 and 50 MeV

NUCLEAR REACTIONS 12C(π+, π+), E=28.4, 38.6, 48.9 MeV; measured σ(θ). Counter telescope, pion identification. Optical model calculations including absorption.

doi: 10.1016/0375-9474(78)90084-2
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1978JO09      Phys.Lett. 78B, 560 (1978)

R.R.Johnson, B.Bassalleck, K.Erdman, B.Gyles, T.Marks, T.Masterson, D.R.Gill, C.Sabev

Elastic Scattering of π- from 12C at 29 MeV

NUCLEAR REACTIONS 12C(π-, π-), E=29 MeV; measured σ(θ).

doi: 10.1016/0370-2693(78)90639-1
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1976DO06      Phys.Lett. 63B, 416 (1976)

H.Dollard, K.L.Erdman, R.R.Johnson, H.R.Johnston, T.Masterson, P.Walden

Elastic Scattering of Positive Pions from 12C at 29 MeV

NUCLEAR REACTIONS 12C(π+, π+), E=29 MeV; measured σ(θ).

doi: 10.1016/0370-2693(76)90384-1
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1972CA30      J.Phys.(London) A5, 1529 (1972)

M.E.Cage, P.D.Kunz, R.R.Johnson, D.A.Lind

A Study of the 113In(3He, d)114Sn Reaction at 37.7 MeV

NUCLEAR REACTIONS 113In(3He, d), (3He, 3He), E=37.7 MeV; measured σ(θ); deduced optical model parameters. 114Sn deduced levels, J, π, L(p), p-H strengths.

doi: 10.1088/0305-4470/5/10/019
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1971BE21      Can.J.Phys. 49, 1374 (1971)

J.L.Beveridge, R.R.Johnson

Final State Interactions in the Reaction T(3He, 4He)np

NUCLEAR REACTIONS 3H(3He, α)np, E=1.5 MeV; measured σ(Ep, Eα, θ(p), θ(α)); deduced n-n, n-p scattering lengths.

doi: 10.1139/p71-163
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1971CA05      Nucl.Phys. A162, 657 (1971)

M.E.Cage, R.R.Johnson, P.D.Kunz, D.A.Lind

The 39K(3He, 3He)39K and 39K(3He, D)40Ca Reactions at 29.3 MeV

NUCLEAR REACTIONS 39K(3He, 3He), 39K(3He, d), E=29.3 MeV; measured σ(θ), σ(Ed, θ). 40Ca deduced levels, L, π, S, β2. Natural targets.

doi: 10.1016/0375-9474(71)90263-6
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1971FA03      Nucl.Phys. A163, 203 (1971)

W.L.Fadner, R.E.L.Green, S.I.Hayakawa, J.J.Kraushaar, R.R.Johnson

Study of Isobaric Analog Ground States for Several Nuclei Using the (3He, t) Reaction

NUCLEAR REACTIONS 54Fe, 62Ni, 64Ni, 90Zr(3He, t), E=37.7 MeV; measured σ(Et, θ). 89Y, 90,92Zr, 93Nb ground-state isobaric analogs deduced Coulomb energies. Enriched targets.

doi: 10.1016/0375-9474(71)90530-6
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1969KU02      Phys.Rev. 177, 1737(1969)

P.D.Kunz, E.Rost, R.R.Johnson

Particle Transfer Reactions on Deformed Nuclei

NUCLEAR REACTIONS 24Mg(p, p), (p, d), E=27.3 MeV; measured σ(Ed, θ). 23Mg deduced levels. Enriched target, optical-model analysis.

doi: 10.1103/PhysRev.177.1737
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1969KU09      Phys.Rev. 185, 1528 (1969)

P.D.Kunz, E.Rost, R.R.Johnson, G.D.Jones, S.I.Hayakawa

Analyses of Quasielastic and Quasi-Inelastic (3He, t) Scattering from the Ni Isotopes

NUCLEAR REACTIONS 58,60,62,64Ni(3He, t), E = 37.5 MeV; measured σ(θ). Coupled-channel analysis, macroscopic, microscopic interaction models.

doi: 10.1103/PhysRev.185.1528
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1968JO03      Nucl.Phys. A107, 659 (1968)

G.D.Jones, R.R.Johnson, R.J.Griffiths

A Study of the 28Si(p, d)27Si Reaction

NUCLEAR REACTIONS 28Si(p, p), E = 27.6 MeV; measured σ(θ). 28Si(p, d), E = 27.6 MeV; measured σ(Ed, θ). 27Si levels deduced L, S. Natural target.

doi: 10.1016/0375-9474(68)90793-8
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1968JO04      Nucl.Phys. A108, 113(1968)

R.R.Johnson, R.J.Griffiths

The 40Ar(p, d)39Ar and 36Ar(p, d)35Ar Reactions at 27.5 MeV

NUCLEAR REACTIONS 36,40Ar(p, d), E = 27.5 MeV; measured σ(Ed, θ). 35,39Ar deduced levels, L(n), , S. Enriched 36Ar target.

doi: 10.1016/0375-9474(68)90148-6
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1968JO05      Nucl.Phys. A111, 449 (1968)

G.D.Jones, R.R.Johnson, J.H.Jett

Some Low-Lying Energy Levels of 45Ti

NUCLEAR STRUCTURE 45Ti; measured not abstracted; deduced nuclear properties.

doi: 10.1016/0375-9474(68)90137-1
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1968JO14      Nucl.Phys. A117, 273(1968)

R.R.Johnson, R.J.Griffiths

Proton Elastic and Inelastic Scattering from Argon at 25 MeV

NUCLEAR REACTIONS 36,40Ar(p, p'); E=24.85 MeV; measured σ(θ, Ep'). 36,40Ar levels deduced J, π, distortion parameters β(L). Enriched targets.

doi: 10.1016/0375-9474(68)90843-9
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1968JO16      Nucl.Phys. A122, 657 (1968)

R.R.Johnson, G.D.Jones

The 64Zn(p, p')64Zn and 64Zn(p, d)63Zn Reactions at 26 MeV

NUCLEAR REACTIONS 64Zn(p, p), (p, p'), (p, d), E=26 MeV; measured σ(Ep', θ), σ(Ed, θ). 64Zn deduced levels, ΔL, deformation parameters. 63Zn deduced levels, L(n), S. Enriched target.

doi: 10.1016/0375-9474(68)90584-8
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO0491.


1967JO03      Phys.Rev. 153, 1169 (1967)

R.R.Johnson, N.M.Hintz

Nuclear Level-Density Fluctuations and Tests of the Compound Statistical Model

NUCLEAR STRUCTURE 60Ni, 64Zn, 62Ni, 66Zn, 65Cu, 63Cu, 61Cu; measured not abstracted; deduced nuclear properties.

doi: 10.1103/PhysRev.153.1169
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1967ST24      Nucl.Phys. A104, 67 (1967)

M.M.Stautberg, R.R.Johnson, J.J.Kraushaar, B.W.Ridley

The 96Zr(p, p') and 96Zr(p, d) Reaction at 19.4 MeV

NUCLEAR REACTIONS 96Zr(p, p), (p, p'), (p, d), E=19.4 MeV; measured σ(Ep', θ), σ(Ed, θ), Q. 96Zr deduced levels J, deformation parameters. 95Zr deduced levels, L(n), S. Enriched target.

doi: 10.1016/0375-9474(67)90757-9
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1965JO16      Univ.Minnesota Linear Accelerator Lab. Annual Progr.Rept., p. 54 (1965)

R.R.Johnson, N.M.Hintz

Inelastic Proton Scattering at 10 MeV and the Statistical Model

NUCLEAR STRUCTURE 60Ni, 58Ni, 64Zn, 63Cu, 66Zn, 65Cu; measured not abstracted; deduced nuclear properties.


1965JO17      Thesis, Univ.Minnesota (1965); See Also 65Jo16

R.R.Johnson

Properties of Nuclear Level Densities from Inelastic Proton Scattering

NUCLEAR STRUCTURE 65Cu, 66Zn, 63Cu, 64Zn, 62Ni, 61Cu, 58Ni, 60Ni; measured not abstracted; deduced nuclear properties.


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