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NSR database version of May 24, 2024.

Search: Author = R.Powers

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1993PO03      Phys.Rev. C47, 1263 (1993)

R.J.Powers, M.Eckhause, P.P.Guss, A.D.Hancock, D.W.Hertzog, D.Joyce, J.R.Kane, W.C.Phillips, W.F.Vulcan, R.E.Welsh, R.J.Whyley, R.G.Winter, E.Austin, G.W.Dodson, J.P.Miller, F.O'Brien, B.L.Roberts, D.R.Tieger, R.B.Sutton, R.Kunselman

Strong-Interaction Effect Measurements in Sigma Hyperonic Atoms of W and Pb

ATOMIC PHYSICS W, Pb; analyzed X-ray spectra from sigma hyperonic atoms. 184W, 208Pb deduced strong interaction shifts, widths.

doi: 10.1103/PhysRevC.47.1263
Citations: PlumX Metrics


1992SA22      Phys.Rev. C46, 2172 (1992)

P.Salvisberg, G.Backenstoss, H.Krause, R.J.Powers, M.Steinacher, H.J.Weyer, M.Wildi, A.Hoffart, B.Rzehorz, H.Ullrich, D.Bosnar, M.Furic, T.Petkovic, N.Simicevic, H.Zmeskal, A.Janett, R.H.Sherman

Pion Absorption in Tritium at Intermediate Energies

NUCLEAR REACTIONS 3H(π+, X), E=119-300 MeV; measured σ(θ) for two outgoing nucleon pair; deduced pion absorption mechanism. 3H deduced n, p momentum probability densities. Kinematically complete measurement.

doi: 10.1103/PhysRevC.46.2172
Citations: PlumX Metrics


1991AU05      Nucl.Instrum.Methods Phys.Res. A301, 473 (1991)

G.Audit, A.Bloch, N.D'Hose, V.Isbert, J.Martin, R.Powers, D.Sundermann, G.Tamas, P.A.Wallace, S.Altieri, A.Braghieri, F.Fossati, P.Pedroni, T.Pinelli, J.Bechade, P.H.Carton, S.Conat, D.Foucaud, M.Goldsticker

DAPHNE: A large-acceptance tracking detector for the study of photoreactions at intermediate energies

NUCLEAR REACTIONS 1H(γ, π0), (γ, π+), 2H(γ, n), E=400 MeV; measured (pπ)- energy, angle correlation. 6Li(γ, X), E=150-300 MeV; measured charge particles E-dE/dX plots. Large acceptance hadron detector.

doi: 10.1016/0168-9002(91)90013-G
Citations: PlumX Metrics


1991CH39      Phys.Rev.Lett. 67, 568 (1991)

L.Chinitz, M.Bernheim, G.P.Capitani, A.Catarinella, J.F.Danel, E.De Sanctis, S.Frullani, F.Garibaldi, F.Ghio, M.Iodice, L.Lakehal-Ayat, J.M.Le Goff, J.LeRose, A.Magnon, C.Marchand, R.Minehart, J.Morgenstern, J.Mougey, S.Nanda, C.Perdrisat, R.Powers, V.Punjabi, A.Saha, P.Ulmer, P.Vernin

Separation of the Interference Response Function R(LT) in the 16O(e, e'p)15N Reaction

NUCLEAR REACTIONS 16O(e, e'p), E=580 MeV; measured σ(θ(e'), E(e'), θp') vs recoil momentum. 15N levels deduced nuclear response function, momentum distribution, spectroscopic factor strength depletion. Relativistic DWIA.

doi: 10.1103/PhysRevLett.67.568
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1991WE14      Nucl.Phys. A534, 541 (1991)

P.Weber, G.Backenstoss, M.Izycki, R.J.Powers, P.Salvisberg, M.Steinacher, H.J.Weyer, S.Cierjacks, A.Hoffart, B.Rzehorz, H.Ullrich, D.Bosnar, M.Furic, T.Petkovic, N.Simicevic

Three-Nucleon Processes and the Total Pion Absorption Cross Section in 3He

NUCLEAR REACTIONS 3He(π+, 2p), (π-, np), (π-, nd), E=64, 119, 162, 206 MeV; measured absorption processes σ involving all three nucleons; deduced integrated σ for 3N absorption, total absorption σ. Different counter configurations.

doi: 10.1016/0375-9474(91)90461-E
Citations: PlumX Metrics


1989BA19      Phys.Lett. 222B, 7 (1989)

G.Backenstoss, M.Izycki, R.Powers, P.Salvisberg, M.Steinacher, P.Weber, H.J.Weyer, A.Hoffart, B.Rzehorz, H.Ullrich, D.Bosnar, M.Furic, T.Petkovic

What is the Mechanism for Three-Nucleon Absorption of Pions in 3He ( Question )

NUCLEAR REACTIONS 3He(π+, 2p), E=120 MeV; measured pp-coin; deduced pion absorption mechanism.

doi: 10.1016/0370-2693(89)90714-4
Citations: PlumX Metrics


1989BA56      Phys.Rev. C40, 2154 (1989)

C.J.Batty, M.Eckhause, K.P.Gall, P.P.Guss, D.W.Hertzog, J.R.Kane, A.R.Kunselman, J.P.Miller, F.O'Brien, W.C.Phillips, R.J.Powers, B.L.Roberts, R.B.Sutton, W.F.Vulcan, R.E.Welsh, R.J.Whyley, R.G.Winter

Strong Interaction Effects in High-Z K- Atoms

ATOMIC PHYSICS, Mesic-Atoms W, Pb, U(K-, X), E at rest; measured X-ray spectra; deduced strong interaction shifts, widths, yields.

NUCLEAR REACTIONS W, Pb, U(K-, X), E at rest; measured X-ray spectra; deduced strong interaction shifts, widths, yields.

doi: 10.1103/PhysRevC.40.2154
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1989WE10      Nucl.Phys. A501, 765 (1989)

P.Weber, G.Backenstoss, M.Izycki, R.J.Powers, P.Salvisberg, M.Steinacher, H.J.Weyer, S.Cierjacks, A.Hoffart, H.Ullrich, M.Furic, T.Petkovic, N.Simicevic

Two-Nucleon Absorption of π+ and π- on 3He Across the Δ-Resonance Region

NUCLEAR REACTIONS 3He(π+, 2p), (π-, pn), E=64, 119, 162, 206 MeV; measured σ(θ); deduced Legendre coefficients, σ vs energy, nucleon momentum distribution in 3He.

doi: 10.1016/0375-9474(89)90160-7
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1986AL22      Phys.Rev. C34, 1757 (1986)

A.Altman, D.Ashery, E.Piasetzky, J.Lichtenstadt, A.I.Yavin, W.Bertl, L.Felawka, H.K.Walter, R.J.Powers, R.G.Winter, J.v.d.Pluym

(π±, 2N) Reactions at 165 and 245 MeV

NUCLEAR REACTIONS 12C, Fe, 209Bi, 16,18O(π+, 2p), (π-, 2p), (π+, np), (π-, np), E=165, 245 MeV; measured σ(θ1, θ2); deduced quasideuteron parameters. Natural, enriched targets, ΔE-E telescopes.

doi: 10.1103/PhysRevC.34.1757
Citations: PlumX Metrics


1984AL20      Phys.Lett. 144B, 337 (1984)

A.Altman, D.Ashery, E.Piasetzky, J.Lichtenstadt, A.I.Yavin, W.Bertl, L.Felawka, H.K.Walter, R.J.Powers, R.G.Winter, J.v.d.Pluym

Isotopic Effects in the (π±, 2N) Reactions on 16O and 18O

NUCLEAR REACTIONS 16,18O(π+, 2p), (π+, np), (π-, np), E=165 MeV; measured σ(θ1, θ2), ratio; deduced reaction mechanism.

doi: 10.1016/0370-2693(84)91273-5
Citations: PlumX Metrics


1984LI18      Phys.Rev. C30, 1740 (1984)

J.R.Lindemuth, M.Eckhause, K.L.Giovanetti, J.R.Kane, M.S.Pandey, A.M.Rushton, W.F.Vulcan, R.E.Welsh, R.G.Winter, P.D.Barnes, J.N.Craig, R.A.Eisenstein, J.D.Sherman, R.B.Sutton, W.R.Wharton, J.P.Miller, B.L.Roberts, A.R.Kunselman, R.J.Powers

Antiprotonic Atoms in Gaseous H2 and He and in Liquid H2

ATOMIC PHYSICS 1H, He(p-bar, X), E at rest; measured E(X-ray), I(X-ray), X-ray yields; deduced strong interaction widths in antiprotonic He 3D state. Gaseous targets.

doi: 10.1103/PhysRevC.30.1740
Citations: PlumX Metrics


1983AL07      Phys.Rev.Lett. 50, 1187 (1983)

A.Altman, E.Piasetzky, J.Lichtenstadt, A.I.Yavin, D.Ashery, R.J.Powers, W.Bertl, L.Felawka, H.K.Walter, R.G.Winter, J.v.d.Pluym

Observation of a Quasideuteron Component in the Reaction 12C(π+, 2p)

NUCLEAR REACTIONS 12C(π+, 2p), E=165, 245 MeV; measured σ(θ1, θ2), σ(θ1, θ2, E2); deduced quasideuteron component, σ, reaction mechanism.

doi: 10.1103/PhysRevLett.50.1187
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1983FO02      Phys.Rev. C28, 2374 (1983)

A.Forster, E.Bovet, J.Gimlett, H.E.Henrikson, D.Murray, R.J.Powers, P.Vogel, F.Boehm, R.Kunselman, P.L.Lee

Determination of the 2p-1s Transition Energy and Strong Interaction Shift in Pionic Hydrogen using Crystal Diffraction

ATOMIC PHYSICS, Mesic-Atoms 1H; measured transition energy following pion absorption, K X-ray yield; deduced strong interaction shift.

doi: 10.1103/PhysRevC.28.2374
Citations: PlumX Metrics


1983GU02      Phys.Rev. C27, 816 (1983)

C.Gunther, E.B.Shera, M.V.Hoehn, H.D.Wohlfahrt, R.J.Powers, Y.Tanaka, A.R.Kunselman

Muonic X-Ray Study of 199Hg and 200Hg

NUCLEAR REACTIONS 199,200Hg(μ-, X), E at rest; measured E X-ray, I X-ray; deduced monopole, quadrupole charge parameters. 200Hg deduced muonic resonance, J, π, B(E1).

NUCLEAR MOMENTS 199,200Hg; measured muonic X-rays; deduced monopole, quadrupole charge parameters. 199Hg levels deduced isomer shift, quadrupole moment, B(E2). 200Hg level deduced isomer shift, quadrupole moment.

doi: 10.1103/PhysRevC.27.816
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1983KU10      Nucl.Phys. A405, 627 (1983)

R.Kunselman, R.J.Powers, M.V.Hoehn, E.B.Shera

Pionic 3d → 2p X-Ray Measurements in 50,52,54Cr, 45Sc, 51V, 55Mn and Fe

ATOMIC PHYSICS, Mesic-Atoms 50,52,54Cr, 45Sc, 51V, 55Mn, Fe; measured pionic X-rays, strong interaction shifts, widths; deduced pion-nucleus optical potential parameters. 12C, 16,18O, 20Ne, 24,26Mg, 28Si, 32S, 40,42,43,44,48Ca, 45Sc, 46,48,50Ti, 51V, 50,52,54Cr, 55Mn, 56Fe deduced nucleon rms radii, differences. Natural Sc, V, Mn, Fe, separated Cr isotope targets.

doi: 10.1016/0375-9474(83)90522-5
Citations: PlumX Metrics


1982PI03      Phys.Rev. C25, 2687 (1982)

E.Piasetzky, D.Ashery, A.Altman, A.I.Yavin, F.W.Schleputz, R.J.Powers, W.Bertl, L.Felawka, H.K.Walter, R.G.Winter, J.v.d.Pluym

(π±, π±p) Reaction at 245 MeV

NUCLEAR REACTIONS C, Fe, Bi(π+, π+p), (π-, π-p), E=245 MeV; measured σ(Ep, θp, θ(π)), σ(θp, θπ); deduced reaction mechanism, σ(knockout).

doi: 10.1103/PhysRevC.25.2687
Citations: PlumX Metrics


1982PI04      Phys.Lett. 114B, 414 (1982)

E.Piasetzky, A.Altman, J.Lichtenstadt, A.I.Yavin, D.Ashery, W.Bertl, L.Felawka, H.K.Walter, F.W.Schleputz, R.J.Powers, R.G.Winter, J.v.d.Pluym

Observation of the (π-, π-n) and (π+, π+p) Reactions at 165 MeV

NUCLEAR REACTIONS C, Fe, Bi(π-, π-n), (π+, π+p), E=165 MeV; measured σ(θπ, θn), σ(θπ, θp); deduced σ(quasifree) ratio.

doi: 10.1016/0370-2693(82)90082-X
Citations: PlumX Metrics


1982PI06      Phys.Rev. C26, 2702 (1982)

E.Piasetzky, A.Altman, J.Lichtenstadt, A.I.Yavin, D.Ashery, W.Bertl, L.Felawka, H.K.Walter, F.W.Schleputz, R.J.Powers, R.G.Winter, J.v.d.Pluym

Pion-Induced Nucleon Knockout Reactions on 16O and 18O

NUCLEAR REACTIONS 16,18O(π+, π+p), (π-, π-p), (π-, π-n), E=165 MeV; measured π+p-, π-p-, π-n-coin; deduced absorption, scattering channel coupling. Scintillator detector array, H216O, H218O targets.

doi: 10.1103/PhysRevC.26.2702
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1981BA28      Nucl.Phys. A364, 446 (1981)

P.Barreau, L.Roussel, R.J.Powers

A Muonic X-Ray Study of the Charge Distribution of 147Sm and 149Sm

ATOMIC PHYSICS, Mesic-Atoms 147,149Sm; measured E(X-ray), I(X-ray); deduced charge parameters, rms radius. Model independent analysis.

NUCLEAR MOMENTS 147,149Sm; measured muonic X-rays, hfs. 147,149Sm deduced spectroscopic quadrupole moments, B(E2), isotope shifts, charge parameters, rms radius. Model independent analysis.

doi: 10.1016/0375-9474(81)90581-9
Citations: PlumX Metrics


1981PI05      Phys.Rev.Lett. 46, 1271 (1981)

E.Piasetzky, D.Ashery, A.Altman, A.I.Yavin, F.W.Schleputz, R.J.Powers, W.Bertl, L.Felawka, H.K.Walter, R.G.Winter, J.v.d.Pluym

Observation of the Quasifree Reactions 12C(π(+-), π(+-)p) at 245 MeV

NUCLEAR REACTIONS 12C(π+, π+p), (π-, π-p), E=245 MeV; measured σ(θ(π), θp, Ep), σ(θ(π), θp), σ(θ(π+))/σ(θ(π-)); deduced consistency with quasifree scattering.

doi: 10.1103/PhysRevLett.46.1271
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1980BO15      Phys.Lett. 92B, 87 (1980)

E.Bovet, F.Boehm, R.J.Powers, P.Vogel, K.-C.Wang, R.Kunselman

Electron Screening and Inner Shell Refilling in Pionic Atoms

ATOMIC PHYSICS Br, Ag, Ce, Hf, Bi; measured optical spectra in pionic atoms; deduced electron screening effects.

doi: 10.1016/0370-2693(80)90310-X
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1980PO01      Nucl.Phys. A336, 475 (1980)

R.J.Powers, K.-C.Wang, M.V.Hoehn, E.B.Shera, H.D.Wohlfahrt, A.R.Kunselman

Experimental Study of Pionic Ca and Ti and Examination of the Pion-Nuclear Potential for Low-Z Nuclei

ATOMIC PHYSICS 40,42,43,44,48Ca, 46,48,50Ti; measured pionic X-rays, isotope shift, strong interactions shifts, widths of 3d to 2p transitions; deduced pion-nucleus optical potential.

doi: 10.1016/0375-9474(80)90222-5
Citations: PlumX Metrics


1979HA08      Nucl.Phys. A314, 361 (1979)

A.A.Hahn, J.P.Miller, R.J.Powers, A.Zehnder, A.M.Rushton, R.E.Welsh, A.R.Kunselman, P.Roberson, H.K.Walter

An Experimental Study of Muonic X-Ray Transitions in Mercury Isotopes

NUCLEAR MOMENTS 198,199,200,201,202,204Hg; measured muonic X-rays, isotope shift; deduced nuclear charge distribution. 198,200Hg deduced quadrupole moment. 199,201Hg deduced quadrupole moment, B(E2).

doi: 10.1016/0375-9474(79)90604-3
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1979PO04      Nucl.Phys. A316, 295 (1979)

R.J.Powers, P.Barreau, B.Bihoreau, J.Miller, J.Morgenstern, J.Picard, L.Roussel

A Muonic X-Ray Study of the Charge Distribution of 144,148,150,152,154Sm

ATOMIC PHYSICS, Mesic-Atoms 144,148,150,152,154Sm(μ-, X-ray); measured E(X-ray), I(X-ray); deduced nuclear charge distribution parameters.

NUCLEAR MOMENTS 144,148,150,152,154Sm; measured muonic X-rays; deduced nuclear charge distribution parameters. 152,154Sm levels deduced quadrupole moment, isomer shift, B(E2).

doi: 10.1016/0375-9474(79)90039-3
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1978VU01      Nucl.Phys. A294, 273 (1978)

J.-L.Vuilleumier, F.Boehm, A.A.Hahn, J.P.Miller, R.J.Powers, K.-C.Wang, A.Zehnder, A.R.Kunselman

Nuclear Charge Parameters and Quadrupole Moment in 105Pd from Muonic X-Rays

NUCLEAR MOMENTS, Mesic-Atoms 105Pd; measured muonic transitions, hfs; deduced quadrupole moment, nuclear charge distribution.

doi: 10.1016/0375-9474(78)90217-8
Citations: PlumX Metrics


1977KU08      Phys.Rev. C15, 1801 (1977)

A.R.Kunselman, P.Roberson, R.J.Powers, F.Boehm, J.P.Miller, A.Zehnder, J.Jarmer

Pionic 4f → 3d Transitions in 148Nd and 150Nd and the Neutron Isotope Shift

NUCLEAR REACTIONS 148,150Nd(π-, X-ray); measured pionic X-rays. 148,150Nd deduced isotope shift.

doi: 10.1103/PhysRevC.15.1801
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1977PO02      Nucl.Phys. A278, 477 (1977)

R.J.Powers, F.Boehm, A.Zehnder, A.R.Kunselman, P.Roberson

A Precision Determination of the Radial Charge Parameters and the Quadrupole Moment of 181Ta Using Muonic X-Rays

NUCLEAR MOMENTS, Mesic-Atoms 181Ta; measured muonic transitions, hfs; deduced quadrupole moment, β2, β4, hexadecapole moment.

doi: 10.1016/0375-9474(77)90093-8
Citations: PlumX Metrics


1977PO15      Nucl.Phys. A292, 487 (1977); Erratum Nucl.Phys. A312, 524 (1978)

R.J.Powers, F.Boehm, A.A.Hahn, J.P.Miller, J.-L.Vuilleumier, K.-C.Wang, A.Zehnder, A.R.Kunselman, P.Roberson

An Experimental Study of the E0, E2 and E4 Charge Moments of 161Dy Using Muonic Atoms

ATOMIC PHYSICS, Mesic-Atoms 161Dy; measured E(X-ray), I(X-ray). 161Dy deduced Q, hexadecapole moment, nuclear charge distribution.

NUCLEAR MOMENTS 161Dy; measured muonic K X-ray, L X-ray, M X-ray; deduced Q, hexadecapole moment, nuclear charge distribution.

doi: 10.1016/0375-9474(77)90632-7
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1977RO23      Phys.Rev. C16, 1945 (1977)

P.Roberson, T.King, R.Kunselman, J.Miller, R.J.Powers, P.D.Barnes, R.A.Eisenstein, R.B.Sutton, W.C.Lam, C.R.Cox, M.Eckhause, J.R.Kane, A.M.Rushton, W.F.Vulcan, R.E.Welsh

Strong Interaction and Mass Measurements Using Antiprotonic Atoms

NUCLEAR REACTIONS 6,7Li, C, Si, P, Fe, Y, Zr, Cs, Yb(p-bar, X), E=0 MeV; measured antiprotonic X-ray spectra; deduced strong interaction shifts, widths, effective scattering length, antiproton mass.

doi: 10.1103/PhysRevC.16.1945
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1976PO05      Nucl.Phys. A262, 493 (1976)

R.J.Powers, F.Boehm, P.Vogel, A.Zehnder, T.King, A.R.Kunselman, P.Roberson, P.Martin, G.H.Miller, R.E.Welsh, D.A.Jenkins

Muonic X-Ray Study of the Charge Distribution of 165Ho

ATOMIC PHYSICS 165Ho(μ-, X-ray); measured E(X-ray), I(X-ray). 165Ho deduced quadrupole moment, hexadecapole moment, nuclear charge distribution.

NUCLEAR MOMENTS 165Ho; measured muonic X-rays, quadrupole moment, hexadecapole moment, nuclear charge distribution.

doi: 10.1016/0375-9474(76)90511-X
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1975BA72      J.Phys.(Paris), Colloq. 36, C5-77 (1975)

P.Barreau, P.Bertin, B.Bihoreau, J.Miller, J.Morgenstern, J.Picard, R.J.Powers, L.Roussel

Atomes Muoniques de Samarium

NUCLEAR MOMENTS, Mesic-Atoms 152Sm; measured quadrupole moment. Muonic study.

ATOMIC PHYSICS 144,147,148,149,150,152,154Sm(μ-, X-ray); measured muonic transitions.


1975EC02      Phys.Rev. C11, 1056 (1975)

M.Eckhause, J.R.Kane, B.L.Roberts, R.E.Welsh, R.P.Redwine, R.E.Segel, P.D.Barnes, R.A.Eisenstein, W.C.Lam, J.Miller, R.B.Sutton, D.A.Jenkins, R.J.Powers, A.R.Kunselman

Observation of Antiprotonic X Rays in 6Li and 4He

NUCLEAR REACTIONS 6Li(p-bar, X-ray), E=800 MeV/c; measured antiproton absorption probabilities.

doi: 10.1103/PhysRevC.11.1056
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1975PO03      Phys.Rev.Lett. 34, 492 (1975)

R.J.Powers, F.Boehm, P.Vogel, A.Zehnder, T.King, A.R.Kunselman, P.Roberson, P.Martin, G.H.Miller, R.E.Welsh, D.A.Jenkins

Precise Determination of E2 and E4 Moments in 165Ho from Muonic X Rays

NUCLEAR MOMENTS 165Ho; analyzed hfs data; deduced quadrupole moment.

doi: 10.1103/PhysRevLett.34.492
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1974BA69      Nucl.Phys. A231, 477 (1974)

P.D.Barnes, R.A.Eisenstein, W.C.Lam, J.Miller, R.B.Sutton, M.Eckhause, J.R.Kane, R.E.Welsh, D.A.Jenkins, R.J.Powers, A.R.Kunselman, R.P.Redwine, R.E.Segel

Measurement of Kaonic X-Rays from Al, Si, Ni and Cu

ATOMIC PHYSICS, Mesic-Atoms Al, Si, Ni, Cu; measured kaonic X-rays.

doi: 10.1016/0375-9474(74)90511-9
Citations: PlumX Metrics


1974PO12      Nucl.Phys. A230, 413 (1974)

R.J.Powers, P.Martin, G.H.Miller, R.E.Welsh, D.A.Jenkins

Muonic 197Au: A Test of the Weak-Coupling Model

NUCLEAR MOMENTS 197Au; measured quadrupole moment, nuclear charge distribution. Muonic X-rays.

ATOMIC PHYSICS, Mesic-Atoms 197Au; measured E(X), I(X); deduced nuclear charge distribution, quadrupole moment, weak-coupling parameters.

doi: 10.1016/0375-9474(74)90147-X
Citations: PlumX Metrics


1974RO34      Phys.Rev.Lett. 33, 1181 (1974)

B.L.Roberts, C.R.Cox, M.Eckhause, J.R.Kane, R.E.Welsh, D.A.Jenkins, W.C.Lam, P.D.Barnes, R.A.Eisenstein, J.Miller, R.B.Sutton, A.R.Kunselman, R.J.Powers, J.D.Fox

New Value for the Magnetic Moment of the Antiproton

NUCLEAR MOMENTS 1H; measured antiproton μ.

doi: 10.1103/PhysRevLett.33.1181
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1973LU01      Phys.Rev. C7, 1678 (1973)

G.R.Lucas, Jr., P.Martin, G.H.Miller, R.E.Welsh, D.A.Jenkins, R.J.Powers, A.R.Kunselman

Neutron Emission Following Muon Capture in 142Ce, 140Ce, 138Ba, and 120Sn

NUCLEAR REACTIONS 120Sn, 138Ba, 140,142Ce(μ-, nγ); measured Eγ, Iγ, 139,140,141,142La, 135,136,137,138Ba, 117,118,119,120In deduced levels, absolute yield per muon capture.

doi: 10.1103/PhysRevC.7.1678
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1973MA45      Phys.Rev. C8, 2453 (1973)

P.Martin, G.H.Miller, R.E.Welsh, D.A.Jenkins, R.J.Powers, A.R.Kunselman

Nuclear Polarization and Charge Parameters Using the Muonic 2s State

ATOMIC PHYSICS 120Sn, 138Ba, 140,142Ce, 206Pb; measured muonic X-rays. Deduced nuclear polarization.

doi: 10.1103/PhysRevC.8.2453
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1972BA55      Phys.Rev.Lett. 29, 230 (1972)

P.D.Barnes, R.A.Einstein, W.C.Lam, J.Miller, R.B.Sutton, M.Eckhause, J.Kane, R.E.Welsh, D.A.Jenkins, R.J.Powers, R.Kunselman, R.P.Redwine, R.E.Segel, J.P.Schiffer

Nuclear γ Rays Associated with Stopped Kaons

NUCLEAR REACTIONS Al, Si, Cu, Ni(K-, γ), measured Eγ, Iγ. 50Cr, 55,56,58Fe, 46Ti, 52Cr, 58,60,62,63Ni, 63,65Cu, 57,59Co deduced transitions.

doi: 10.1103/PhysRevLett.29.230
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1972BR18      Phys.Rev.Lett. 28, 1469 (1972)

D.A.Bryman, M.Blecher, K.Gotow, R.J.Powers

Search for the Reaction μ- + Cu→e+ + Co

NUCLEAR REACTIONS Cu(μ-, e+), E approx 0; measured σ(Eβ); deduced branching ratios.

doi: 10.1103/PhysRevLett.28.1469
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1971JE04      Nucl.Phys. A175, 73 (1971)

D.A.Jenkins, R.J.Powers, P.Martin, G.H.Miller, R.E.Welsh

2s Atomic Level in Muonic 208Pb

ATOMIC PHYSICS, Mesic-Atoms 208Pb; measured μ-mesic E(X-ray), I(X-ray). 208Pb deduced nuclear charge parameters, nuclear polarization.

doi: 10.1016/0375-9474(71)90622-1
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1970JE04      Phys.Rev. C1, 2050 (1970)

D.A.Jenkins, R.J.Powers, A.R.Kunselman

5g→4f Pionic Transition in Th232 and U238

ATOMIC PHYSICS, Mesic-Atoms 232Th, 238U; measured 5g-4f X-ray energies, widths; deduced nuclear charge distribution parameters.

doi: 10.1103/PhysRevC.1.2050
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1970JE05      Phys.Lett. 32B, 267 (1970)

D.A.Jenkins, R.J.Powers, P.Martin, G.H.Miller, R.E.Welsh, A.R.Kunselman

The 2s Atomic Level in Muonic 140Ce

ATOMIC PHYSICS, Mesic-Atoms 140Ce; measured μ-mesic X-ray spectra; deduced nuclear charge distribution, polarization.

doi: 10.1016/0370-2693(70)90524-1
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1970JE07      Phys.Rev. C2, 429 (1970)

D.A.Jenkins, R.J.Powers, A.R.Kunselman

4f → 3d Pionic Transition in Ba138, Ce140, and Ce142

ATOMIC PHYSICS, Mesic-Atoms 138Ba, 140,142Ce; measured π-mesic X-ray spectra; deduced isotone.

doi: 10.1103/PhysRevC.2.429
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1970JE08      Phys.Rev. C2, 458 (1970)

D.A.Jenkins, R.J.Powers, A.R.Kunselman

Muonic Interactions in Zn66 and Zn68

ATOMIC PHYSICS, Mesic-Atoms 66,68Zn; measured μ-mesic X-ray spectra; deduced isotope shift.

doi: 10.1103/PhysRevC.2.458
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1969JE03      Phys.Rev. 185, 1508 (1969)

D.A.Jenkins, R.J.Powers, G.H.Miller

3d→2p Pionic Transition in Ni58 and Ni60

ATOMIC PHYSICS, Mesic-Atoms 58,60Ni; measured pionic X-ray spectra; deduced isomer shift, dependence on neutron radius.

doi: 10.1103/PhysRev.185.1508
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1968PO01      Phys.Rev. 169, 1 (1968)

R.J.Powers

Hyperfine Effects in Muonic Bi and Pb

NUCLEAR STRUCTURE, Mesic-Atoms 209Bi, Pb; measured not abstracted; deduced nuclear properties.

doi: 10.1103/PhysRev.169.1
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1967EH01      Phys.Rev.Letters 18, 959 (1967)

R.D.Ehrlich, D.Fryberger, D.A.Jensen, C.Nissim-Sabat, R.J.Powers, V.L.Telegdi, C.K.Hargrove

Precise Measurements of Muonic Isotope Shifts for 29 Nuclides, in Particular, for the Ca Isotopes 40, 42, 44, and 48

NUCLEAR STRUCTURE Ni, Si, Zr, K, Sr, Fe, Cu, Ca, Sn; measured not abstracted; deduced nuclear properties.

doi: 10.1103/PhysRevLett.18.959
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1967PO04      Z.Physik 202, 214 (1967)

R.J.Powers, V.L.Telegdi

Interpretation of the Experimental Evidence Concerning the Quadrupole Moment of Bi209; a Test of the Shell Model

NUCLEAR STRUCTURE 209Bi; measured not abstracted; deduced nuclear properties.

doi: 10.1007/BF01331210
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1966EH01      Phys.Lett. 23, 468 (1966)

R.D.Ehrlich, D.Fryberger, D.A.Jensen, C.Nissim-Sabat, R.J.Powers, B.A.Sherwood, V.L.Telegdi

Energy Shifts and Intensity Ratios in the Muonic X-Ray Spectra of the Pb Isotopes 206, 207 and 208

NUCLEAR STRUCTURE, Mesic-Atoms 208Tl, 206Tl, 207Tl; measured not abstracted; deduced nuclear properties.

doi: 10.1016/0031-9163(66)90778-5
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1965RA06      Nucl.Phys. 73, 353 (1965)

S.Raboy, C.C.Trail, J.A.Bjorkland, R.D.Ehrlich, R.J.Powers, V.L.Telegdi

Experimental Observations of Electric Quadrupole Effects in the Muonic Spectra of 235U, 181Ta and 239Pu

NUCLEAR MOMENTS 235U, 181Ta, 239Pu; measured muonic X-rays; deduced Q0.

doi: 10.1016/0029-5582(65)90681-4
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1964EH02      Phys.Rev.Letters 13, 550 (1964)

R.D.Ehrlich, R.J.Powers, V.L.Telegdi, J.A.Bjorkland, S.Raboy, C.C.Trail

Experimental Observation of Electric-Quadrupole Hyperfine Effects in Muonic X-Ray Spectra

doi: 10.1103/PhysRevLett.13.550
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1950PO67      Phys.Rev. 79, 175 (1950)

R.I.Powers, A.F.Voigt

The Half-Life of Strontium 90

doi: 10.1103/PhysRev.79.175
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Note: The following list of authors and aliases matches the search parameter R.Powers: , R.I.POWERS, R.J.POWERS