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Search: Author = D.F.Ottewell

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2012HU03      Nucl.Instrum.Methods Phys.Res. A689, 70 (2012)

D.A.Hutcheon, C.Ruiz, J.Fallis, J.M.D'Auria, B.Davids, U.Hager, L.Martin, D.F.Ottewell, S.Reeve, A.Rojas

Measurement of radiative capture resonance energies with an extended gas target

NUCLEAR REACTIONS ¹H(²⁴Mg, γ), E=224, 227 keV/nucleon; measured reaction products, Eγ, Iγ; deduced resonance energies and their uncertainties. Dragon facility.

doi: 10.1016/j.nima.2012.05.069
Citations: PlumX Metrics

2011SA12      Phys.Rev. C 83, 034611 (2011)

A.L.Sallaska, C.Wrede, A.Garcia, D.W.Storm, T.A.D.Brown, C.Ruiz, K.A.Snover, D.F.Ottewell, L.Buchmann, C.Vockenhuber, D.A.Hutcheon, J.A.Caggiano, J.Jose

Absolute determination of the ²²Na( p, γ )²³Mg reaction rate in novae

NUCLEAR REACTIONS ²²Na(p, γ), E=150-700 keV; measured Eγ, Iγ; deduced absolute yields, excitation functions for resonances, resonance strengths and thermonuclear reaction rates. ²³Mg; deduced levels, J, π, branching ratios, resonances. Estimated flux of ²²Na gamma rays from novae.

doi: 10.1103/PhysRevC.83.034611
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1827. Data from this article have been entered in the XUNDL database. For more information, click here.

2010ER02      Phys.Rev. C 81, 045808 (2010)

L.Erikson, C.Ruiz, F.Ames, P.Bricault, L.Buchmann, A.A.Chen, J.Chen, H.Dare, B.Davids, C.Davis, C.M.Deibel, M.Dombsky, S.Foubister, N.Galinski, U.Greife, U.Hager, A.Hussein, D.A.Hutcheon, J.Lassen, L.Martin, D.F.Ottewell, C.V.Ouellet, G.Ruprecht, K.Setoodehnia, A.C.Shotter, A.Teigelhofer, C.Vockenhuber, C.Wrede, A.Wallner

First direct measurement of the ²³Mg(p, γ)²⁴Al reaction

NUCLEAR REACTIONS ²³Mg(p, γ)²⁴Al, E=500 keV; measured Eγ, Iγ, γγ-, (recoil)γ-coin, (recoil)γ(t), thick target yields, resonance strengths; deduced resonance, reaction rates. DRAGON recoil spectrometer. GEANT3 simulations.

doi: 10.1103/PhysRevC.81.045808
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1784. Data from this article have been entered in the XUNDL database. For more information, click here.

2010SA26      Phys.Rev.Lett. 105, 152501 (2010)

A.L.Sallaska, C.Wrede, A.Garcia, D.W.Storm, T.A.D.Brown, C.Ruiz, K.A.Snover, D.F.Ottewell, L.Buchmann, C.Vockenhuber, D.A.Hutcheon, J.A.Caggiano

Direct Measurements of ²²Na(p, γ)²³Mg Resonances and Consequences for ²²Na Production in Classical Novae

NUCLEAR REACTIONS ²²Na(p, γ), E not given; measured Eγ, Iγ; deduced proton resonances energies and strengths, σ, reaction rates.

doi: 10.1103/PhysRevLett.105.152501
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1816. Data from this article have been entered in the XUNDL database. For more information, click here.

2006RU09      Phys.Rev.Lett. 96, 252501 (2006)

C.Ruiz, A.Parikh, J.Jose, L.Buchmann, J.A.Caggiano, A.A.Chen, J.A.Clark, H.Crawford, B.Davids, J.M.D'Auria, C.Davis, C.Deibel, L.Erikson, L.Fogarty, D.Frekers, U.Greife, A.Hussein, D.A.Hutcheon, M.Huyse, C.Jewett, A.M.Laird, R.Lewis, P.Mumby-Croft, A.Olin, D.F.Ottewell, C.V.Ouellet, P.Parker, J.Pearson, G.Ruprecht, M.Trinczek, C.Vockenhuber, C.Wrede

Measurement of the E_c.m. = 184 keV Resonance Strength in the ^26gAl(p, γ)²⁷Si Reaction

NUCLEAR REACTIONS ¹H(²⁶Al, γ), E=5.122, 5.226, 5.850 MeV; measured Eγ, (recoil)γ-coin. ²⁶Al(p, γ), E(cm) ≈ 184 keV; deduced resonance strength. Astrophysical implications discussed.

doi: 10.1103/PhysRevLett.96.252501
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1449.

2002HU06      Nucl.Phys. A705, 367 (2002)

G.M.Huber, G.J.Lolos, Z.Papandreou, J.Hovdebo, S.I.H.Naqvi, D.F.Ottewell, P.L.Walden, G.Jones, X.Aslanoglou

The (π⁺, pd) and (π⁺, dd) Reactions on Light Nuclei at 100 and 165 MeV Incident Pion Energies

NUCLEAR REACTIONS ⁶Li, ¹²C(π⁺, pd), (π⁺, 2d), E=100, 165 MeV; measured particle spectra, coincidences, σ(θ), total σ; deduced reaction mechanism features. Comparison with model predictions.

doi: 10.1016/S0375-9474(02)00678-4
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2001PA45      Phys.Rev. C64, 064611 (2001)

M.M.Pavan, J.T.Brack, F.Duncan, A.Feltham, G.Jones, J.Lange, K.J.Raywood, M.E.Sevior, R.Adams, D.F.Ottewell, G.R.Smith, B.Wells, R.L.Helmer, E.L.Mathie, R.Tacik, R.A.Ristinen, I.I.Strakovsky, H.-M.Staudenmaier

Precision Pion-Proton Elastic Differential Cross Sections at Energies Spanning the Δ Resonance

NUCLEAR REACTIONS ¹H(π⁺, π⁺), (π^-, π^-), E=141.15-267.3 MeV; measured σ(θ), (pion)(proton)-coin. Comparison with model predictions.

doi: 10.1103/PhysRevC.64.064611
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1997HU14      Nucl.Phys. A624, 623 (1997)

G.M.Huber, G.J.Lolos, Z.Papandreou, J.C.Cormier, E.L.Mathie, S.I.H.Naqvi, D.F.Ottewell, P.L.Walden, G.Jones, R.P.Trelle, X.Aslanoglou, J.L.Visschers

Multinucleon Contributions to the ¹²C(π⁺, pp) Reaction at 100 and 165 MeV Incident Pion Energies

NUCLEAR REACTIONS ¹²C(π⁺, 2p), E=100, 165 MeV; measured proton production associated total, differential σ; deduced reaction mechanisms. Monte Carlo simulations.

doi: 10.1016/S0375-9474(97)00390-4
Citations: PlumX Metrics

1996LO04      Phys.Rev. C54, 211 (1996)

G.J.Lolos, G.M.Huber, E.L.Mathie, S.I.H.Naqvi, Z.Papandreou, D.F.Ottewell, P.L.Walden, G.Jones, X.Aslanoglou, J.L.Visschers

Role of Quasideuteron Absorption in the ⁶Li(π⁺, pp) Reaction at T(π⁺) = 100, 165 MeV

NUCLEAR REACTIONS ⁶Li(π⁺, 2p), E=100, 165 MeV; measured σ(θ, E), σ(θ); deduced two-, three-nucleon absorption total σ. Enriched ⁶Li target. Monte Carlo analysis.

doi: 10.1103/PhysRevC.54.211
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1995BR02      Phys.Rev. C51, 929 (1995)

J.T.Brack, P.A.Amaudruz, D.F.Ottewell, G.R.Smith, M.Kermani, M.Pavan, D.Vetterli, R.A.Ristinen, S.Hoibraten, M.D.Kohler, J.J.Kraushaar, B.J.Kriss, J.Jaki, M.Metzler, E.F.Gibson

Forward Angle π±p Elastic Scattering Differential Cross Sections at T(π) = 87 to 139 MeV

NUCLEAR REACTIONS ¹H(π⁺, π⁺), (π^-, π^-), E=87-139 MeV; measured absolute σ(θ) vs E. Active target of scintillator material.

doi: 10.1103/PhysRevC.51.929
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1995PA22      Phys.Rev. C51, R2862 (1995)

Z.Papandreou, G.M.Huber, G.J.Lolos, J.C.Cormier, E.L.Mathie, S.I.H.Naqvi, D.F.Ottewell, R.Tacik, P.L.Walden, G.Jones, R.P.Trelle, X.Aslanoglou, D.L.Humphrey

⁶Li(π⁺, pp)⁴He(g.s.) Reaction at 100 and 165 MeV Incident Pion Energies

NUCLEAR REACTIONS ⁶Li(π⁺, 2p), E=100, 165 MeV; measured σ(E, θ₁, θ₂); deduced σ(E).

doi: 10.1103/PhysRevC.51.R2862
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1995YE02      Phys.Rev. C52, 2526 (1995)

D.M.Yeomans, E.L.Mathie, G.M.Huber, G.J.Lolos, S.I.H.Naqvi, V.Pafilis, G.Jones, M.Sevior, R.P.Trelle, P.Weber, R.Tacik, D.Healey, D.F.Ottewell, G.R.Smith, G.Wait, H.Garcilazo, D.L.Humphrey

Analyzing Power Measurements in Pion-Deuteron Breakup at Intermediate Energies

NUCLEAR REACTIONS ²H(π⁺, pπ⁺), E=80-300 MeV; measured iT₁₁(θ) vs proton momentum following breakup. Polarized target. Relativistic Faddeev calculations comparison.

doi: 10.1103/PhysRevC.52.2526
Citations: PlumX Metrics

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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1994YE03      Phys.Rev. C49, 2898 (1994)

D.M.Yeomans, E.L.Mathie, G.M.Huber, S.I.H.Naqvi, D.S.Persram, M.Pavan, R.Tacik, D.Healey, D.F.Ottewell, G.R.Smith, P.Amaudruz

Analyzing Power Measurements in Pion Deuteron Absorption at Low Energies

NUCLEAR REACTIONS ²H(π⁺, 2p), E=25, 65 MeV; measured iT₁₁(θ). Model calculations comparisons. Polarized target.

doi: 10.1103/PhysRevC.49.2898
Citations: PlumX Metrics

1993KO37      Phys.Rev. C48, 1884 (1993)

M.D.Kohler, R.A.Ristinen, J.J.Kraushaar, B.J.Kriss, E.F.Gibson, G.R.Smith, D.F.Ottewell, J.T.Brack, M.Kermani, J.Jaki, M.Metzler

Absolute Differential Cross Sections and Charge Asymmetries for π± d Elastic Scattering at 30, 50, and 65 MeV

NUCLEAR REACTIONS ²H(π⁺, π⁺), (π^-, π^-), E=30-65 MeV; measured σ(θ) vs E; deduced charge asymmetry.

doi: 10.1103/PhysRevC.48.1884
Citations: PlumX Metrics

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
Citations: PlumX Metrics

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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1991KO15      Phys.Rev. C44, 15 (1991)

M.D.Kohler, J.T.Brack, B.Clausen, J.J.Kraushaar, B.J.Kriss, R.A.Ristinen, K.Vaziri, G.R.Smith, D.F.Ottewell, M.E.Sevior, R.P.Trelle, N.R.Stevenson

Absolute Differential Cross Sections and Charge Asymmetries for π⁺d Elastic Scattering at 65 MeV

NUCLEAR REACTIONS ²H(π⁺, π⁺), (π^-, π^-), E=65 MeV; measured absolute σ(θ), asymmetry. Faddeev calculations.

doi: 10.1103/PhysRevC.44.15
Citations: PlumX Metrics

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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1990BR08      Phys.Rev. C41, 2202 (1990)

J.T.Brack, R.A.Ristinen, J.J.Kraushaar, R.A.Loveman, R.J.Peterson, G.R.Smith, D.R.Gill, D.F.Ottewell, M.E.Sevior, R.P.Trelle, E.L.Mathie, N.Grion, R.Rui

Absolute Differential Cross Sections for π± p Elastic Scattering at 30 ≤ Tπ ≤ 67 MeV

NUCLEAR REACTIONS ¹H(π⁺, π⁺), (π^-, π^-), E=30-66.8 MeV; measured absolute σ(θ).

doi: 10.1103/PhysRevC.41.2202
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1990MA79      J.Phys.(Paris), Colloq.C-6, 383 (1990)

E.L.Mathie, D.M.Yeomans, G.M.Huber, G.J.Lolos, S.I.H.Naqvi, V.Pafilis, Z.Papandreou, A.Feltham, R.Olszewski, G.Jones, M.Pavan, M.Sevior, R.P.Trelle, P.Weber, D.Gill, D.Healey, D.F.Ottewell, G.R.Smith, G.Wait, P.Walden, R.Rui

Polarization Measurements in Pion Deuteron Breakup and Absorption

NUCLEAR REACTIONS ²H(π, πnp), E not given; measured tensor analyzing power vs proton momentum. Faddeev model analyses. Polarized target.

1990PA03      Phys.Rev. C41, R1339 (1990)

Z.Papandreou, G.J.Lolos, G.M.Huber, J.C.Cormier, S.I.H.Naqvi, D.F.Ottewell, P.L.Walden, G.Jones

Composite Particle Emission following Negative Pion Absorption on ¹²C at T(π^-) = 165 MeV

NUCLEAR REACTIONS ¹²C(π^-, 2p), (π^-, pd), (π^-, 2d), E=165 MeV; measured σ(θ₁, θ₂); deduced π^- absorption mechanism.

doi: 10.1103/PhysRevC.41.R1339
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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.

1989PA13      Phys.Lett. 227B, 25 (1989)

Z.Papandreou, G.J.Lolos, G.M.Huber, J.C.Cormier, S.I.H.Naqvi, D.F.Ottewell, P.L.Walden, G.Jones

The ¹²C(π^-, pp)X Reaction at 165 MeV

NUCLEAR REACTIONS ¹²C(π^-, 2pX), E=165 MeV; measured σ(θp₁, θp₂); deduced reaction mechanism.

doi: 10.1016/0370-2693(89)91278-1
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1989SH09      Nucl.Instrum.Methods Phys.Res. A274, 227 (1989)

Y.M.Shin, N.R.Stevenson, L.O.Dallin, K.Itoh, G.Retzlaff, G.D.Wait, D.R.Gill, D.F.Ottewell

A t₂₀ Tensor Polarimeter

NUCLEAR REACTIONS ²H(π, π), E=133, 141 MeV; measured recoil deuteron polarization. A t₂₀ tensor polarimeter, ³He(d, p) analyzer.

doi: 10.1016/0168-9002(89)90385-9
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1989ST04      Phys.Rev. C39, 1488 (1989)

N.R.Stevenson, Y.M.Shin, K.Itoh, G.Retzlaff, D.R.Gill, D.F.Ottewell, G.D.Wait, T.E.Drake, D.Frekers, R.B.Schubank, G.J.Lolos

Measurement of t₂₀ in π⁺d Elastic Scattering

NUCLEAR REACTIONS ²H(π⁺, π⁺), E=116-145 MeV; measured tensor polarization t₂₀(θ); deduced no evidence for dibaryons.

doi: 10.1103/PhysRevC.39.1488
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1988BR28      Phys.Rev. C38, 2427 (1988)

J.T.Brack, J.J.Kraushaar, D.J.Rilett, R.A.Ristinen, D.F.Ottewell, G.R.Smith, R.G.Jeppesen, N.R.Stevenson

Large-Angle π⁺p Elastic Scattering at 66.8 MeV

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

doi: 10.1103/PhysRevC.38.2427
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1986MC11      Nucl.Phys. A456, 629 (1986)

B.J.McParland, E.G.Auld, P.Couvert, G.L.Giles, G.Jones, W.Ziegler, X.Aslanoglou, G.M.Huber, G.J.Lolos, S.I.H.Naqvi, Z.Papandreou, D.R.Gill, D.F.Ottewell, P.L.Walden

A Study of the ⁶Li(π^+,3He)³He Reaction at 60, 80, 100 and 140 MeV Incident Pion Beam Energies

NUCLEAR REACTIONS ⁶Li(π^+,3He), E=60, 80, 100, 140 MeV; measured σ(θ).

doi: 10.1016/0375-9474(86)90079-5
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1985MC05      Phys.Lett. 156B, 47 (1985)

B.J.McParland, E.G.Auld, P.Couvert, G.L.Giles, G.Jones, W.Ziegler, X.Aslanoglou, G.M.Huber, G.J.Lolos, S.I.H.Naqvi, Z.Papandreou, D.R.Gill, D.F.Ottewell, P.L.Walden

Angular Dependence of the ⁶Li(π^+,3He)³He Reaction at 60 and 80 MeV

NUCLEAR REACTIONS ⁶Li(π^+,3He), E=60, 80 MeV; measured σ(θ).

doi: 10.1016/0370-2693(85)91352-8
Citations: PlumX Metrics

1985SH23      Phys.Rev.Lett. 55, 2672 (1985)

Y.M.Shin, K.Itoh, N.R.Stevenson, D.R.Gill, D.F.Ottewell, G.D.Wait, T.E.Drake, D.F.Frekers, R.B.Schubank, G.J.Lolos

t₂₀ in π⁺d Elastic Scattering between 118 and 148 MeV

NUCLEAR REACTIONS ²H(π⁺, π⁺), E=118-148 MeV; measured recoil tensor polarization, σ(θ); deduced no dibaryon resonance effects. Liquid LD₂ target.

doi: 10.1103/PhysRevLett.55.2672
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1985ZI04      Phys.Rev. C32, 301 (1985)

W.Ziegler, E.G.Auld, W.R.Falk, G.L.Giles, G.Jones, G.J.Lolos, B.J.McParland, P.L.Walden, D.F.Ottewell

Polarized-Proton-Induced Pion Production on ¹⁰B at 200, 225, 250, and 260 MeV Incident Energies

NUCLEAR REACTIONS ¹⁰B(polarized p, π⁺), E=200, 225, 250, 260 MeV; measured σ(θ), analyzing power vs θ, σ(E(π⁺)).

doi: 10.1103/PhysRevC.32.301
Citations: PlumX Metrics