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Search: Author = E.R.Siciliano

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2014AG15      Phys.Rev. C 90, 034607 (2014)

E.Aguayo, R.T.Kouzes, E.R.Siciliano

Neutron spallation measurements and impacts on low-background experiments

NUCLEAR REACTIONS H, C, O, Al, Fe, Cu, W, Pb(n, xn), E=20-200 MeV, cosmic-ray neutrons; measured neutron spectra, neutron multiplicity, neutron in-out ratio using 3He-based neutron coincidence counter array at PNNL facility, high-density polyethylene (HDPE) target for hydrogen, carbon and oxygen. Comparison with simulations using GEANT4 and MCNPX codes. Relevance to shielding techniques for the next generation of low-background experiments such as neutrinoless double beta decay, and to estimate background rates.

doi: 10.1103/PhysRevC.90.034607
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1993SA28      Phys.Rev. C48, 1988 (1993)

H.Sarafian, M.B.Johnson, E.R.Siciliano

Medium Modification of Meson Propagation Between Two Nucleons in Finite Nuclei

NUCLEAR REACTIONS 14C(π+, π-), E=10-110 MeV; calculated σ(θ) ratio for plane-wave, distorted wave; deduced impact on pion-nucleon scattering amplitudes.

doi: 10.1103/PhysRevC.48.1988
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1991CA18      Z.Phys. A339, 261 (1991)

B.Castel, E.R.Siciliano, Y.Okuhara

Radiative M1 Capture in Light Nuclei

NUCLEAR REACTIONS 28Si(n, γ), E not given; analyzed B(M1) data; deduced reaction mechanism. Shell model.

doi: 10.1007/BF01284062
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1991JO14      Phys.Rev. C44, 2480 (1991)

M.B.Johnson, E.Oset, H.Sarafian, E.R.Siciliano, M.Vicente-Vacas

Meson Exchange Currents in Pion Double Charge Exchange

NUCLEAR REACTIONS 14C(π+, π-), E=10-110 MeV; Ca(π+, π-), E=50 MeV; calculated σ(θ=0°) vs E; deduced meson exchange contribution mass dependence. Weinberg Lagrangian.

doi: 10.1103/PhysRevC.44.2480
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1990SI18      Ann.Phys.(New York) 203, 1 (1990)

E.R.Siciliano, M.B.Johnson, H.Sarafian

Dynamical Correlations in Low-Energy Pion Double Charge Exchange

NUCLEAR REACTIONS 14C(π+, π-), E=10-100 MeV; calculated σ(θ); deduced different mechanism contributions. Fixed-nucleon field theory.

doi: 10.1016/0003-4916(90)90028-M
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1989WI20      Phys.Rev. C40, 2745 (1989)

A.Wirzba, H.Toki, E.R.Siciliano, M.B.Johnson, R.Gilman

Pion Double Charge Exchange in the Δ33 Resonance Region

NUCLEAR REACTIONS 18O(π+, π+), (π-, π-), E=164 MeV; 16,18O(π+, π-), E=164 MeV; calculated σ(θ).

doi: 10.1103/PhysRevC.40.2745
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1987HU13      Nucl.Phys. A475, 743 (1987)

J.R.Hurd, J.S.Boswell, R.C.Minehart, Y.Tzeng, H.J.Ziock, K.O.H.Ziock, L.C.Liu, E.R.Siciliano

The Reaction (π+, π+d) on 6Li and 12C

NUCLEAR REACTIONS 12C, 6Li(π+, π+d), E=130, 150 MeV; measured σ(E(π), θ(d), θ(π)); deduced reaction mechanism. PWIA.

doi: 10.1016/0375-9474(87)90235-1
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1986GI13      Phys.Rev. C34, 1895 (1986)

R.Gilman, H.T.Fortune, M.B.Johnson, E.R.Siciliano, H.Toki, A.Wirzba, B.A.Brown

Nuclear-Structure Aspects of Nonanalog Pion Double Charge Exchange

NUCLEAR REACTIONS 12C, 16O, 24Mg, 28Si, 32S, 40,44Ca, 56Fe(π+, π-), E=100-300 MeV; calculated σ(θ) vs E. Nonanalog double charge exchange.

doi: 10.1103/PhysRevC.34.1895
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1986IR02      Phys.Rev. C34, 2231 (1986)

F.Irom, J.D.Bowman, G.O.Bolme, E.Piasetzky, U.Sennhauser, J.Alster, J.Lichtenstadt, M.Moinester, J.N.Knudson, S.H.Rokni, E.R.Siciliano

Excitation of Isovector Giant Resonances in Pion Single-Charge Exchange at 120, 165, and 230 MeV

NUCLEAR REACTIONS 40Ca, 60Ni, 120Sn(π+, π0), (π-, π0), E=120, 230 MeV; measured σ(θ(π), E(π)). 40Ca, 60Ni, 120Sn deduced monopole, dipole resonance excitation energies, widths, maximum σ. Scintillator activation technique, π0 spectrometer. DWIA calculations.

doi: 10.1103/PhysRevC.34.2231
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1986SI11      Phys.Rev. C34, 267 (1986)

E.R.Siciliano, M.D.Cooper, M.B.Johnson, M.J.Leitch

Effects of Nuclear Correlations on Low-Energy Pion Charge-Exchange Scattering

NUCLEAR REACTIONS 14C, 48Ca(π+, π+), E=50 MeV; calculated radial distortion functions. 14C, 48Ca(π+, π0), 1H(π-, π0), E=50 MeV; calculated σ(θ). Isospin invariant optical potential.

doi: 10.1103/PhysRevC.34.267
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1985AU01      Phys.Rev. C51, 682 (1985)

N.Auerbach, A.Klein, E.R.Siciliano

Isospin Composition of Giant Resonances and Asymmetries in π+ Compared to π- Inelastic Scattering

NUCLEAR REACTIONS 40,48Ca, 90Zr, 120Sn, 208Pb(π+, π+'), (π-, π-'), E not given; calculated σ(θ), ratios. Microscopic model.

NUCLEAR STRUCTURE 40,48Ca, 90Zr, 120Sn, 208Pb; calculated GQR, total strengths. 120Sn; calculated T=0, GQR transition densities. RPA, isoscalar, isovector modes.

doi: 10.1103/PhysRevC.51.682
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1985GI06      Phys.Rev. C32, 349 (1985)

R.Gilman, H.T.Fortune, M.B.Johnson, E.R.Siciliano, H.Toki, A.Wirzba

Nonanalog Pion Double Charge Exchange through the Δ33-Nucleon Interaction

NUCLEAR REACTIONS 16O(π+, π-), E=80-320 MeV; calculated σ(θ) vs θ; deduced reaction mechanism. Pion double charge exchange intermediate processes.

doi: 10.1103/PhysRevC.32.349
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1985KL07      Phys.Rev. C32, 1998 (1985)

A.Klein, E.R.Siciliano, N.Auerbach

Continuum Spectra for 165 MeV Pion-Nucleus Single Charge Exchange

NUCLEAR REACTIONS 40Ca, 90Zr, 120Sn(π+, π0), (π-, π0), E=165 MeV; calculated σ(θ, E(π)); deduced giant isovector resonances role. Single scattering approximation.

doi: 10.1103/PhysRevC.32.1998
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1985UL01      Phys.Rev. C31, 177 (1985)

J.L.Ullmann, J.J.Kraushaar, T.G.Masterson, R.J.Peterson, R.S.Raymond, R.A.Ristinen, N.S.P.King, R.L.Boudrie, C.L.Morris, R.E.Anderson, E.R.Siciliano

Pion Inelastic Scattering to Giant Resonances and Low-Lying Collective States in 118Sn and 40Ca

NUCLEAR REACTIONS 40Ca, 118Sn(π+, π+), (π+, π+'), (π-, π-), (π-, π-'), E=135 MeV; measured σ(E(π)), σ(θ). 40Ca, 118Sn deduced giant quadrupole, monopole, low-energy octupole resonance strengths, deformation lengths, sum rule fraction. Isoscalar models.

doi: 10.1103/PhysRevC.31.177
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1984AU02      Phys.Rev. C29, 526 (1984)

N.Auerbach, M.B.Johnson, A.Klein, E.R.Siciliano

Nuclear Structure Effects in Pion Single Charge Exchange

NUCLEAR REACTIONS 90Zr, 120Sn, 208Pb(π-, π0), (π+, π0), E=100-300 MeV; calculated IAR, isovector monopole resonance transition densities; deduced structure effects role. DWIA model.

doi: 10.1103/PhysRevC.29.526
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1984CO04      Phys.Rev.Lett. 52, 1100 (1984)

M.D.Cooper, H.W.Baer, R.Bolton, J.D.Bowman, F.Cverna, N.S.P.King, M.Leitch, J.Alster, A.Doron, A.Erell, M.A.Moinester, E.Blackmore, E.R.Siciliano

Angular Distribution for 15N(π+, π0)15O(g.s.) at T(π) = 48 MeV

NUCLEAR REACTIONS 15N(π+, π0), E=48 MeV; measured σ(θ), σ(E(π0)); deduced optical potential second-order term role. 15O deduced IAS excitation.

doi: 10.1103/PhysRevLett.52.1100
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1984GR27      Phys.Rev. C30, 2003 (1984)

S.J.Greene, C.J.Harvey, P.A.Seidl, R.Gilman, E.R.Siciliano, M.B.Johnson

Unified Analysis of Pion Single- and Double-Charge-Exchange Scattering in the Resonance Region

NUCLEAR REACTIONS 16O, 28Si, 40Ca, 14,12C(π+, π+), (π-, π-), E=164 MeV; 14C, 18O, 24Mg(π+, π0), E=164 MeV; 13C, 15N(π+, π-), E=165 MeV; calculated σ(θ). 7Li, 13,14C, 15N, 18O, 60Ni, 90Zr, 120Sn, 140Ce, 208Pb(π+, π-), E=165 MeV; 14C, 18O, 26Mg, 42,48Ca, 56Fe, 90Zr(π+, π0), E=164 MeV; calculated σ(θ, A); deduced second-order optical model parameters. Phenomenological analysis.

doi: 10.1103/PhysRevC.30.2003
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1984JO01      Phys.Rev.Lett. 52, 593 (1984)

M.B.Johnson, E.R.Siciliano, H.Toki, A.Wirzba

Δ33 Dynamics in Pion Double Charge Exchange

NUCLEAR REACTIONS 18O(π+, π-), E=100-300 MeV; calculated σ(θ=0°) vs E. Direct meson-isobar interactions, Klein-Gordon equation.

doi: 10.1103/PhysRevLett.52.593
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1984RO02      Phys.Rev. C29, 209 (1984)

E.Rost, J.R.Shepard, E.R.Siciliano, J.A.McNeil

Impulse Approximation Dirac Theory of Inelastic Proton Nucleus Collective Excitations

NUCLEAR REACTIONS 54Fe(polarized p, p), E=800 MeV; calculated σ(θ), analyzing power vs θ. Dirac theory, impulse approximation.

doi: 10.1103/PhysRevC.29.209
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1984SH08      Phys.Rev. C29, 2243 (1984)

J.R.Shepard, E.Rost, E.R.Siciliano, J.A.McNeil

Dirac Single-Particle Wave Functions in Inelastic Electron Scattering

NUCLEAR REACTIONS 12C(e, e), (e, e'), E not given; calculated charge, transverse form factors; deduced transverse isoscalar transition linear inelastic amplitude role. Dirac single particle wave functions.

doi: 10.1103/PhysRevC.29.2243
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1983BA13      Nucl.Phys. A396, 437c (1983)

H.W.Baer, R.Bolton, J.D.Bowman, M.D.Cooper, F.Cverna, N.S.P.King, M.Leitch, H.S.Matis, J.Alster, A.Doron, A.Erell, M.A.Moinester, E.Blackmore, E.R.Siciliano

Study of Isovector Resonances with Pion Charge Exchange

NUCLEAR REACTIONS 12C, 40Ca, 90Zr, 120Sn(π+, π0), (π-, π0), E=164 MeV; measured σ(θ), σ(θ, E(π0)). 90Y, 90Nb, 120Sb, 120In deduced isovector monopole, dipole resonances.

doi: 10.1016/0375-9474(83)90037-4
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1983BO07      Phys.Rev.Lett. 50, 1195 (1983)

J.D.Bowman, H.W.Baer, R.Bolton, M.D.Cooper, F.H.Cverna, N.S.P.King, M.Leitch, H.S.Matis, A.Erell, J.Alster, A.Doron, M.A.Moinester, E.Blackmore, E.R.Siciliano

Observation of the Nuclear Isovector Monopole Resonance

NUCLEAR REACTIONS 90Zr, 120Sn(π-, π0), (π+, π0), E=165 MeV; measured σ(θ, E(π)). 90Zr deduced GDR, isovector monopole resonance, Γ. 120Sn deduced IAS, GDR, isovector monopole resonance, Γ.

doi: 10.1103/PhysRevLett.50.1195
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1983IR04      Phys.Rev. C28, 2565 (1983)

F.Irom, J.R.Comfort, R.Jeppesen, J.J.Kraushaar, R.A.Ristinen, W.Tew, J.L.Ullmann, H.W.Baer, J.D.Bowman, M.D.Cooper, E.Piasetzky, U.Sennhauser, A.Erell, M.A.Moinester, E.R.Siciliano

Pion Single Charge Exchange on 14C

NUCLEAR REACTIONS 14C(π+, π0), E=100, 165, 230, 295 MeV; measured σ(E(π)), σ(θ=0°) vs E. 14N deduced IAS excitation energy dependence. Impulse approximation calculations.

doi: 10.1103/PhysRevC.28.2565
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1983JO06      Phys.Rev. C27, 1647 (1983)

M.B.Johnson, E.R.Siciliano

Pion Single and Double Charge Exchange in the Resonance Region: Dynamical corrections

NUCLEAR REACTIONS 18O(π+, π-), E=164 MeV; 18O, 26Mg, 42,48Ca, 58Ni, 90Zr, 120Sn, 208Pb(π+, π0), (π+, π-), E=180 MeV; calculated σ(θ); deduced second-order process role. Optical model, dynamical corrections.

doi: 10.1103/PhysRevC.27.1647
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1983UL01      Phys.Rev.Lett. 51, 1038 (1983)

J.L.Ullmann, J.J.Kraushaar, T.G.Masterson, R.J.Peterson, R.S.Raymond, R.A.Ristinen, N.S.P.King, R.L.Boudrie, C.L.Morris, W.W.True, R.E.Anderson, E.R.Siciliano

Excitation of the Isoscalar Giant Quadrupole Resonance in 118Sn(π±, π±')

NUCLEAR REACTIONS 118Sn(π+, π+'), (π-, π-'), E=130 MeV; measured σ(E(π')), σ(θ); deduced σ(π-)/σ(π+). 118Sn deduced GQR excitation neutron, proton asymmetry. DWIA calculations.

doi: 10.1103/PhysRevLett.51.1038
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1982BA50      Phys.Rev.Lett. 49, 1376 (1982)

H.W.Baer, R.Bolton, J.D.Bowman, M.D.Cooper, F.Cverna, N.S.P.King, M.Leitch, H.S.Matis, J.Alster, A.Doron, A.Erell, M.A.Moinester, E.Blackmore, E.R.Siciliano

Observation of Analogs of the Giant-Dipole Resonance in Pion Single Charge Exchange on 40Ca

NUCLEAR REACTIONS 40Ca(π+, π0), (π-, π0), E=164 MeV; measured σ(θ, E(π0)); deduced σ(π+)/σ(π-). 40Sc deduced IAS. DWIA, Goldhaber-Teller transition density.

doi: 10.1103/PhysRevLett.49.1376
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1982EL07      Phys.Rev. C26, 1544 (1982)

R.J.Ellis, H.J.Ziock, K.O.H.Ziock, Y.Tzeng, J.Arvieux, R.Corfu, J.Piffaretti, L.C.Liu, E.R.Siciliano

Reactions 12C(π±, π±d)10B and 12C(π±, π±t)9B

NUCLEAR REACTIONS 12C(π+, π+d), (π+, π+t), (π-, π-d), (π-, π-t), E=160, 180, 200 MeV; measured σ(θ(π), θd), σ(θ(π), θt) vs pion momentum. Plane wave impulse approximation.

doi: 10.1103/PhysRevC.26.1544
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1981SI05      Phys.Rev. C23, 2661 (1981)

E.R.Siciliano, G.E.Walker

Pion-Nucleus Inelastic Scattering: Reaction contributions and nuclear spin determinations

NUCLEAR REACTIONS 12C(π+, π+'), E=116, 180, 260 MeV; calculated σ(θ); deduced final state spin dependence. DWIA, Fermi motion, S-wave, P-wave spin-flip, nonspin-flip effects.

doi: 10.1103/PhysRevC.23.2661
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1980BA27      Phys.Rev.Lett. 45, 982 (1980)

H.W.Baer, J.D.Bowman, M.D.Cooper, F.H.Cverna, C.M.Hoffman, M.B.Johnson, N.S.P.King, J.Piffaretti, E.R.Siciliano, J.Alster, A.Doron, S.Gilad, M.Moinester, P.R.Bevington, E.Winkelmann

Observation of Isobaric Analog States in Pion Single-Charge-Exchange Reactions

NUCLEAR REACTIONS 7Li, 13C, 27Al, 58Ni, 90Zr, 120Sn, 208Pb(π+, π0), E=98 MeV; measured σ(θ). 7Be, 13N, 27Si, 58Cu, 90Nb, 120Sb, 208Bi deduced IAS. Optical model.

doi: 10.1103/PhysRevLett.45.982
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1980HO13      Phys.Rev.Lett. 45, 420 (1980)

D.R.Holtkamp, W.J.Braithwaite, W.Cottingame, S.J.Greene, R.J.Joseph, C.F.Moore, C.L.Morris, J.Piffaretti, E.R.Siciliano, H.A.Thiessen, D.Dehnhard

Isospin Mixing of 4- Particle-Hole States in 16O

NUCLEAR REACTIONS 16O(π+, π+'), (π-, π-'), E=164 MeV; measured σ(θ(π), E(π')); deduced off-diagonal charge-dependent matrix elements. 16O levels deduced isospin mixing.

doi: 10.1103/PhysRevLett.45.420
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1980PE11      Phys.Lett. B95, 166 (1980)

F.Petrovich, W.G.Love, A.Picklesimer, G.E.Walker, E.R.Siciliano

Differences in the Structure of Isoscalar and Isovector Stretched Excitations in 24Mg and 28Si

NUCLEAR REACTIONS 24Mg, 28Si(p, p'), E=135 MeV; analyzed σ(θ). 24Mg, 28Si levels deduced isospin dependence of S, stretched configurations.

doi: 10.1016/0370-2693(80)90461-X
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1980SI13      Phys.Lett. 93B, 371 (1980)

E.R.Siciliano, D.L.Weiss

Continuum Effects in Pion-Nucleus Inelastic Scattering

NUCLEAR REACTIONS 12C(π+, π+'), (π-, π-'), E=180 MeV; calculated σ(θ); deduced enhancement in negative pion channel, continuum effects. 12C levels deduced isospin mixing. DWIA.

doi: 10.1016/0370-2693(80)90345-7
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