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NSR database version of May 6, 2024.

Search: Author = J.Powell

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2011LE25      J.Phys.(London) G38, 075201 (2011)

D.W.Lee, J.Powell, K.Perajarvi, F.Q.Guo, D.M.Moltz, J.Cerny

Study of the ¹¹C(p, γ) reaction via the indirect d(¹¹C, ¹²N)n transfer reaction

NUCLEAR REACTIONS ²H(¹¹C, ¹²N), E=150 MeV; measured reaction products; deduced σ(θ), S-factors, reaction rates. DWUCK4 code calculations.

doi: 10.1088/0954-3899/38/7/075201
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1903. Data from this article have been entered in the XUNDL database. For more information, click here.

2007BU01      Phys.Rev. C 75, 012804 (2007)

L.Buchmann, J.D'Auria, M.Dombsky, U.Giesen, K.P.Jackson, P.McNeely, J.Powell, A.Volya

β-delayed α emission of ¹⁸N: Broad J^π = 1^- states in the ¹⁴C + α system

RADIOACTIVITY ¹⁸N(β^-); measured β-delayed Eα, βα-coin. ¹⁸O deduced level energies, J, π, widths. Astrophysical implications discussed.

doi: 10.1103/PhysRevC.75.012804
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Data from this article have been entered in the XUNDL database. For more information, click here.

2007LE26      Phys.Rev. C 76, 024314 (2007)

D.W.Lee, K.Perajarvi, J.Powell, J.P.O'Neil, D.M.Moltz, V.Z.Goldberg, J.Cerny

Low-lying resonant states in ¹⁶F using a ¹⁵O radioactive ion beam

NUCLEAR REACTIONS ¹H(¹⁵O, p), E=120 MeV; measured excitation function. ¹⁶F deduced level widths.

doi: 10.1103/PhysRevC.76.024314
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Data from this article have been entered in the XUNDL database. For more information, click here.

2006PE21      Phys.Rev. C 74, 024306 (2006)

K.Perajarvi, C.Fu, G.V.Rogachev, G.Chubarian, V.Z.Goldberg, F.Q.Guo, D.Lee, D.M.Moltz, J.Powell, B.B.Skorodumov, G.Tabacaru, X.D.Tang, R.E.Tribble, B.A.Brown, A.Volya, J.Cerny

Structure of ¹²N using ¹¹C+p resonance scattering

NUCLEAR REACTIONS ¹H(¹¹C, p), E(cm)=2.2-11.0 MeV; measured recoil proton spectra, σ(θ), excitation functions. ¹²N deduced levels, J, π, widths. R-matrix analysis.

doi: 10.1103/PhysRevC.74.024306
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1506. Data from this article have been entered in the XUNDL database. For more information, click here.

2005BE61      Eur.Phys.J. A 25, Supplement 1, 203 (2005)

N.Benczer-Koller, G.Kumbartzki, J.R.Cooper, T.J.Mertzimekis, M.J.Taylor, L.Bernstein, K.Hiles, P.Maier-Komor, M.A.McMahan, L.Phair, J.Powell, K.-H.Speidel, D.Wutte

First g-factor measurement using a radioactive ⁷⁶Kr beam

NUCLEAR REACTIONS ²⁶Mg(⁷⁶Kr, ⁷⁶Kr'), E=230 MeV; measured Eγ, Iγ(θ, H, t), (particle)γ-coin following projectile Coulomb excitation. ⁷⁶Kr level deduced g factor. Transient field technique.

doi: 10.1140/epjad/i2005-06-098-8
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2005GU25      Phys.Rev. C 72, 034312 (2005)

F.Q.Guo, J.Powell, D.W.Lee, D.Leitner, M.A.McMahan, D.M.Moltz, J.P.O'Neil, K.Perajarvi, L.Phair, C.A.Ramsey, X.J.Xu, J.Cerny

Reexamination of the energy levels of ¹⁵F by ¹⁴O + ¹H elastic resonance scattering

NUCLEAR REACTIONS ¹H(¹⁴O, p), E=120 MeV; measured recoil proton spectra, σ(θ). ¹⁵F deduced resonance energies, J, π.

doi: 10.1103/PhysRevC.72.034312
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1369.

2004KU11      Phys.Lett. B 591, 213 (2004)

G.Kumbartzki, J.R.Cooper, N.Benczer-Koller, K.Hiles, T.J.Mertzimekis, M.J.Taylor, K.-H.Speidel, P.Maier-Komor, L.Bernstein, M.A.McMahan, L.Phair, J.Powell, D.Wutte

First g factor measurement using a radioactive ⁷⁶Kr beam

NUCLEAR REACTIONS ²⁶Mg(⁷⁶Kr, ⁷⁶Kr'), E=230 MeV; ²⁶Mg(⁷⁸Kr, ⁷⁸Kr'), E=224 MeV; measured Eγ, Iγ(θ, H, t) following projectile Coulomb excitation. ^76,78Kr levels deduced g factors. Transient field technique, systematics in neighboring isotopes discussed.

doi: 10.1016/j.physletb.2004.04.040
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2002AN06      Phys.Rev. C65, 034310 (2002)

D.Anthony, L.Buchmann, P.Bergbusch, J.M.D'Auria, M.Dombsky, U.Giesen, K.P.Jackson, J.D.King, J.Powell, F.C.Barker

β-Delayed Deuteron Emission from ⁶He

RADIOACTIVITY ⁶He(β^-) [from C(p, X)]; measured Eβ, β-delayed deuteron spectra, dα-coin, T_1/2; deduced branching ratio. Comparison with model predictions.

doi: 10.1103/PhysRevC.65.034310
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2002CH61      Phys.Rev. C 66, 064316 (2002)

J.C.Chow, J.D.King, N.P.T.Bateman, R.N.Boyd, L.Buchmann, J.M.D'Auria, T.Davinson, M.Dombsky, E.Gete, U.Giesen, C.Iliadis, K.P.Jackson, A.C.Morton, J.Powell, A.Shotter

β-delayed particle decay of ¹⁷Ne into p+α+¹²C through the isobaric analog state in ¹⁷F

RADIOACTIVITY ¹⁷Ne(β⁺α), (β⁺p); measured Ep, Eα pα(¹²C)-coin following decay of intermediate IAS state; deduced branching ratios. ¹⁷F deduced branching ratios for particle decay from IAS.

doi: 10.1103/PhysRevC.66.064316
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2002MO19      Nucl.Phys. A706, 15 (2002)

A.C.Morton, J.C.Chow, J.D.King, R.N.Boyd, N.P.T.Bateman, L.Buchmann, J.M.D'Auria, T.Davinson, M.Dombsky, W.Galster, E.Gete, U.Giesen, C.Iliadis, K.P.Jackson, J.Powell, G.Roy, A.Shotter

Beta-Delayed Particle Decay of ¹⁷Ne

RADIOACTIVITY ¹⁷Ne(β⁺p), (β⁺α); measured Ep, Eα, pγ-coin, angular correlations; deduced log ft, Gamow-Teller strength. ¹⁷F deduced levels, J, π, particle decay branching ratios.

doi: 10.1016/S0375-9474(02)00862-X
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2002RO17      Phys.Rev. C65, 054310 (2002)

M.W.Rowe, J.C.Batchelder, T.N.Ginter, K.E.Gregorich, F.Q.Guo, F.P.Hessberger, V.Ninov, J.Powell, K.S.Toth, X.J.Xu, J.Cerny

Decay of ¹⁷⁸Tl

RADIOACTIVITY ¹⁵⁹Ta, ^170,171Ir, ^171,172,173Pt, ^174,175,176Au, ^{175,176,177,178,179}Hg, ^178,179,179mTl(α) [from ¹⁰²Pd(⁷⁸Kr, xnyp) and subsequent decay]; measured Eα, T_1/2, branching ratios. ¹⁷⁴Au, ¹⁷⁰Ir deduced levels. ¹⁷⁸Tl, ^170,171Ir deduced mass excess.

NUCLEAR REACTIONS ¹⁰²Pd(⁷⁸Kr, np), E=340 MeV; measured delayed Eα, αα-, (recoil)α-coin; deduced σ lower limit.

doi: 10.1103/PhysRevC.65.054310
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2001BA12      Phys.Rev.Lett. 86, 1454 (2001)

G.C.Ball, S.Bishop, J.A.Behr, G.C.Boisvert, P.Bricault, J.Cerny, J.M.D'Auria, M.Dombsky, J.C.Hardy, V.Iacob, J.R.Leslie, T.Lindner, J.A.Macdonald, H.-B.Mak, D.M.Moltz, J.Powell, G.Savard, I.S.Towner

Precise Half-Life Measurement for the Superallowed 0⁺ → 0⁺ β Emitter ⁷⁴Rb: First results from the new radioactive beam facility (ISAC) at TRIUMF

RADIOACTIVITY ⁷⁴Rb(β⁺) [from Nb(p, X)]; measured superallowed decay T_1/2.

doi: 10.1103/PhysRevLett.86.1454
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2000JO12      Phys.Rev.Lett. 84, 5066 (2000)

R.Joosten, J.Powell, F.Q.Guo, P.E.Haustein, R.-M.Larimer, M.A.McMahan, E.B.Norman, J.P.O'Neil, M.W.Rowe, H.F.VanBrocklin, D.Wutte, X.J.Xu, J.Cerny

Measurement of Excitation Functions in the Reactions ¹⁹⁷Au(¹¹, xn)^208-xAt Using a Radioactive ¹¹C Beam

NUCLEAR REACTIONS ¹⁹⁷Au(¹¹C, 3n), (¹¹C, 4n), (¹¹C, 5n), (¹¹C, 6n), (¹¹C, 7n), (¹¹C, 8n), (¹¹C, 9n), E=60-110 MeV; measured excitation functions. Comparison with model predictions.

doi: 10.1103/PhysRevLett.84.5066
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1998RO13      Phys.Rev. C57, 2222 (1998)

M.W.Rowe, D.M.Moltz, T.J.Ognibene, J.Powell, J.Cerny

Search for Proton Decay from a Predicted Isomer of ⁷⁷Rb

NUCLEAR REACTIONS ⁴⁰Ca(⁴⁰Ca, 3p), E=110-160 MeV; measured isomeric state production σ upper limit. Helium-jet transport, on-line mass separation.

doi: 10.1103/PhysRevC.57.2222
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1996BA35      Phys.Rev. C54, 949 (1996)

J.C.Batchelder, K.S.Toth, E.F.Zganjar, D.M.Moltz, C.R.Bingham, T.J.Ognibene, J.Powell, M.W.Rowe

Determination of the ¹⁹⁰Po α Reduced Width

RADIOACTIVITY ¹⁹⁰Po(α) [from ¹⁴⁴Sm(⁴⁸Si, 2n), E=215 MeV]; measured T_1/2, Eα; deduced α-decay reduced width, mass excess.

doi: 10.1103/PhysRevC.54.949
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1996OG01      Phys.Rev. C54, 1098 (1996)

T.J.Ognibene, J.Powell, D.M.Moltz, M.W.Rowe, J.Cerny

Additional Results from the β-Delayed Proton Decays of ²⁷P and ³¹Cl

RADIOACTIVITY ^28,27P, ³¹Cl(β⁺p) [from Zn, Si(p, X), E=28, 45 MeV]; measured β-delayed Ep, Ip; deduced log ft, branching ratios, β strength function. Compared to theory.

doi: 10.1103/PhysRevC.54.1098
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1994AZ03      Phys.Rev. C50, 1194 (1994); Erratum Phys.Rev. C56, 1655 (1997)

R.E.Azuma, L.Buchmann, F.C.Barker, C.A.Barnes, J.M.D'Auria, M.Dombsky, U.Giesen, K.P.Jackson, J.D.King, R.G.Korteling, P.McNeely, J.Powell, G.Roy, J.Vincent, T.R.Wang, S.S.M.Wong, P.R.Wrean

Constraints on the Low-Energy E1 Cross Section of ¹²C(α, γ)¹⁶O from the β-Delayed α Spectrum of ¹⁶N

RADIOACTIVITY ¹⁶N(β^-) [from on-line separation]; measured β-delayed α-spectrum, (α)(¹²C)-coin; deduced R-matrix, K-matrix level parameters relevant to ¹²C(α, γ) reaction. Thin Si surface barrier detector.

NUCLEAR REACTIONS, ICPND ¹²C(α, γ), E(cm) ≤ 3 MeV; calculated E1 part of astrophysical S-factor, σ(E); deduced R-matrix, K-matrix level parameters. Data of β^--delayed α-spectrum of ¹⁶N-decay input.

doi: 10.1103/PhysRevC.50.1194
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1994DO08      Phys.Rev. C49, 1867 (1994)

M.Dombsky, L.Buchmann, J.M.D'Auria, U.Giesen, K.P.Jackson, J.D.King, E.Korkmaz, R.G.Korteling, P.McNeely, J.Powell, G.Roy, M.Trinczek, J.Vincent

β-Delayed α Decay of ¹⁷N

RADIOACTIVITY ¹⁷N(β^-); measured β-delayed Eα, Iα, α(¹³C)-coin; deduced log ft, total βα-branching ratio. ¹⁷O deduced levels contributing to α-decay.

doi: 10.1103/PhysRevC.49.1867
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1993BU03      Phys.Rev.Lett. 70, 726 (1993)

L.Buchmann, R.E.Azuma, C.A.Barnes, J.M.D'Auria, M.Dombsky, U.Giesen, K.P.Jackson, J.D.King, R.G.Korteling, P.McNeely, J.Powell, G.Roy, J.Vincent, T.R.Wang, S.S.M.Wong, P.R.Wrean

β-Delayed α Spectrum of ¹⁶N and the ¹²C(α, γ)¹⁶O Cross Section at Low Energies

RADIOACTIVITY ¹⁶N(β^-); measured β-delayed Eα, Iα, α(¹²C)-coin; deduced E1 part of ¹²C(α, γ) reaction, astrophysical S-factor.

doi: 10.1103/PhysRevLett.70.726
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1993BU18      J.Phys.(London) G19, S115 (1993)

L.Buchmann, R.E.Azuma, C.A.Barnes, A.Chen, J.Chen, J.M.D'Auria, M.Dombsky, U.Giesen, K.P.Jackson, J.D.King, R.Korteling, P.McNeely, J.Powell, G.Roy, M.Trinczek, J.Vincent, P.R.Wrean, S.S.M.Wong

The β-Delayed α Spectrum of ¹⁶N and the Low-Energy Extrapolation of the ¹²C(α, γ)¹⁶O Cross Section

RADIOACTIVITY ¹⁶N(β^-); measured β-delayed Eα, Iα, βα-coin; deduced ¹²C(α, γ) reaction σ(E=low) implications.

doi: 10.1088/0954-3899/19/S/010
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1993BU21      Nucl.Instrum.Methods Phys.Res. B79, 330 (1993)

L.Buchmann, R.E.Azuma, C.A.Barnes, J.M.D'Auria, M.Dombsky, U.Giesen, K.P.Jackson, J.D.King, R.Korteling, P.McNeely, J.Powell, G.Roy, J.Vincent, S.S.M.Wong, P.R.Wrean

A Study of Beta Delayed Alpha Emission from ¹⁶N

RADIOACTIVITY ¹⁶N(β^-); measured β-delayed α(¹²C)-coin. ^18,17N(β^-); measured β-delayed Eα, Iα; deduced ¹²C(α, γ) reaction p-wave capture amplitude.

doi: 10.1016/0168-583X(93)95357-B
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1952HA73      Phys.Rev. 87, 223 UA7 (1952)

H.H.Hall, J.L.Powell

The Scattering of Protons by Protons (IV)

NUCLEAR REACTIONS ¹H(p, X), E not given; analyzed available data. ²H; deduced exchange effect, P contribution in terms of conventional triplet interactions including Majorana exchange.

doi: 10.1103/PhysRev.87.179
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Note: The following list of authors and aliases matches the search parameter J.Powell: , J.L.POWELL