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NSR database version of April 11, 2024.

Search: Author = J.Knudson

Found 60 matches.

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2001MA55      Phys.Rev. C64, 015501 (2001)

Y.Matsuda, J.D.Bowman, B.E.Crawford, P.P.J.Delheij, T.Haseyama, J.N.Knudson, L.Y.Lowie, A.Masaike, Y.Masuda, G.E.Mitchell, S.I.Penttila, H.Postma, N.R.Roberson, S.J.Seestrom, E.I.Sharapov, S.L.Stephenson, Y.-F.Yen, V.W.Yuan

Parity Violation in Neutron Resonances of Antimony and Iodine

NUCLEAR REACTIONS 121,123Sb, 127I(polarized n, n'), E ≈ 5-350 eV; measured transmission neutron spectra. 121,123Sb, 127I deduced resonance parameters, parity-nonconserving asymmetries, weak spreading widths.

doi: 10.1103/PhysRevC.64.015501
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14179.


2000MI09      Phys.Rev. C61, 045503 (2000)

G.E.Mitchell, J.D.Bowman, B.E.Crawford, P.P.J.Delheij, C.M.Frankle, M.Iinuma, J.N.Knudson, L.Y.Lowie, A.Masaike, Y.Matsuda, S.I.Penttila, H.Postma, N.R.Roberson, S.J.Seestrom, E.I.Sharapov, S.L.Stephenson, Y.-F.Yen, V.W.Yuan

New Search for Parity Violation in Nonresonant Neutron Scattering on Thorium

NUCLEAR REACTIONS 232Th(polarized n, n), E=30-300 eV; measured transmission neutron spectra; deduced off-resonance parity violating asymmetry.

doi: 10.1103/PhysRevC.61.045503
Citations: PlumX Metrics


2000SH02      Phys.Rev. C61, 025501 (2000)

E.I.Sharapov, J.D.Bowman, B.E.Crawford, P.P.J.Delheij, C.M.Frankle, M.Iinuma, J.N.Knudson, L.Y.Lowie, J.E.Lynch, A.Masaike, Y.Matsuda, G.E.Mitchell, S.I.Penttila, H.Postma, N.R.Roberson, S.J.Seestrom, S.L.Stephenson, Y.-F.Yen, V.W.Yuan

Parity Violation in 232Th Neutron Resonances Above 250 eV

NUCLEAR REACTIONS 232Th(polarized n, n), E=40-2100 eV; measured transimission yields, asymmetry. 232Th deduced resonances, parity-nonconservation effects.

doi: 10.1103/PhysRevC.61.025501
Citations: PlumX Metrics


2000SN02      Nucl.Instrum.Methods Phys.Res. A440, 729 (2000)

W.M.Snow, A.Bazhenov, C.S.Blessinger, J.D.Bowman, T.E.Chupp, K.P.Coulter, S.J.Freedman, B.K.Fujikawa, T.R.Gentile, G.L.Greene, G.Hansen, G.E.Hogan, S.Ishimoto, G.L.Jones, J.N.Knudson, E.Kolomenski, S.K.Lamoreaux, M.B.Leuschner, A.Masaike, Y.Masuda, Y.Matsuda, G.L.Morgan, K.Morimoto, C.L.Morris, H.Nann, S.I.Penttila, A.Pirozhkov, V.R.Pomeroy, D.R.Rich, A.Serebrov, E.I.Sharapov, D.A.Smith, T.B.Smith, R.C.Welsh, F.E.Wietfeldt, W.S.Wilburn, V.W.Yuan, J.Zerger

Measurement of the Parity Violating Asymmetry Aγ in n(pol) + p → d + γ

NUCLEAR REACTIONS 1H(polarized n, γ), E=low; calculated parity violation measurement systematic effects. Experiment proposal.

doi: 10.1016/S0168-9002(99)01071-2
Citations: PlumX Metrics


2000ST08      Phys.Rev. C61, 045501 (2000)

S.L.Stephenson, J.D.Bowman, F.Corvi, B.E.Crawford, P.P.J.Delheij, C.M.Frankle, M.Iinuma, J.N.Knudson, L.Y.Lowie, A.Masaike, Y.Masuda, Y.Matsuda, G.E.Mitchell, S.I.Penttila, H.Postma, N.R.Roberson, S.J.Seestrom, E.I.Sharapov, H.M.Shimizu, Y.-F.Yen, V.W.Yuan, L.Zanini

Parity Violation in Neutron Resonances in 115In

NUCLEAR REACTIONS In(polarized n, n), E=6-316 eV; measured transmission neutron spectra. 115In(n, γ), E=3-480 eV; measured Eγ, Iγ, σ(En). 115In deduced p-wave resonances J, π, asymmetries, parity violation, weak spreading width.

doi: 10.1103/PhysRevC.61.045501
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14712.


1999CR03      Phys.Rev. C60, 055503 (1999)

B.E.Crawford, J.D.Bowman, P.P.J.Delheij, T.Haseyama, J.N.Knudson, L.Y.Lowie, A.Masaike, Y.Matsuda, G.E.Mitchell, S.I.Penttila, H.Postma, N.R.Roberson, S.J.Seestrom, E.I.Sharapov, S.L.Stephenson, V.W.Yuan

Parity Nonconservation in 106Pd and 108Pd Neutron Resonances

NUCLEAR REACTIONS 106,108Pd(polarized n, γ), E=20-2000 eV; measured capture σ vs helicity; deduced weak spreading widths, possible parity nonconservation effects.

doi: 10.1103/PhysRevC.60.055503
Citations: PlumX Metrics


1999LO01      Phys.Rev. C59, 1119 (1999)

L.Y.Lowie, J.D.Bowman, F.Corvi, B.E.Crawford, P.P.J.Delheij, C.M.Frankle, M.Iinuma, J.N.Knudson, A.Masaike, Y.Masuda, Y.Matsuda, G.E.Mitchell, S.I.Penttila, H.Postma, N.R.Roberson, S.J.Seestrom, E.I.Sharapov, H.M.Shimizu, S.L.Stephenson, Y.-F.Yen, V.W.Yuan, L.Zanini

Parity Violation in Neutron Resonances in 107, 109Ag

NUCLEAR REACTIONS Ag(polarized n, X), E=32-422 eV; measured total σ helicity dependence, longitudinal asymmetries; deduced parity nonconservation features. 107,109Ag(n, γ), E=10-800 eV; measured Eγ, Iγ, tof spectra. 107,109Ag deduced resonances E, Γ, J.

doi: 10.1103/PhysRevC.59.1119
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset13687.


1999SH11      Phys.Rev. C59, 1131 (1999)

E.I.Sharapov, J.D.Bowman, B.E.Crawford, P.P.J.Delheij, C.M.Frankle, K.Fukuda, M.Iinuma, J.N.Knudson, S.J.Lokitz, L.Y.Lowie, A.Masaike, Y.Masuda, Y.Matsuda, G.E.Mitchell, S.I.Penttila, H.Postma, N.R.Roberson, S.J.Seestrom, H.M.Shimizu, S.L.Stephenson, Y.-F.Yen, V.W.Yuan

Search for Parity Violation in 93Nb Neutron Resonances

NUCLEAR REACTIONS 93Nb(polarized n, n), E=32-1000 eV; measured total σ, longitudinal asymmetries. 93Nb deduced resonances E, Γ, upper limit for weak spreading width.

doi: 10.1103/PhysRevC.59.1131
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset13780.


1999SH17      Phys.Rev. C59, 1772 (1999)

E.I.Sharapov, J.D.Bowman, B.E.Crawford, P.P.J.Delheij, T.Haseyama, J.N.Knudson, L.Y.Lowie, A.Masaike, Y.Masuda, Y.Matsuda, G.E.Mitchell, S.I.Penttila, H.Postma, N.R.Roberson, S.J.Seestrom, S.L.Stephenson, Y.-F.Yen, V.W.Yuan

Parity Nonconservation in Neutron Resonances in 133Cs

NUCLEAR REACTIONS 133Cs(polarized n, γ), E=5-400 eV; measured transmission spectra, σ(E) asymmetry. 133Cs deduced resonances E, Γ, parity non-conserving matrix element, weak spreading width.

doi: 10.1103/PhysRevC.59.1772
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset13781.


1998CR04      Phys.Rev. C58, 729 (1998)

B.E.Crawford, J.D.Bowman, P.P.J.Delheij, T.Haseyama, J.N.Knudson, L.Y.Lowie, A.Masaike, Y.Matsuda, G.E.Mitchell, S.I.Penttila, H.Postma, N.R.Roberson, S.J.Seestrom, E.I.Sharapov, S.L.Stephenson, V.W.Yuan

Neutron Resonance Spectroscopy of 106Pd and 108Pd from 20 to 2000 eV

NUCLEAR REACTIONS 106,108Pd(n, γ), (n, n'γ), E=20-2000 eV; measured transmission, capture Eγ, Iγ. 106,108Pd deduced resonances E, Γ, J, π. Multilevel, multichannel analysis.

doi: 10.1103/PhysRevC.58.729
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset13713.


1998CR05      Phys.Rev. C58, 1225 (1998)

B.E.Crawford, J.D.Bowman, P.P.J.Delheij, C.M.Frankle, M.Iinuma, J.N.Knudson, L.Y.Lowie, A.Masaike, Y.Matsuda, G.E.Mitchell, S.I.Penttila, H.Postma, N.R.Roberson, S.J.Seestrom, E.I.Sharapov, S.L.Stephenson, Y.-F.Yen, V.W.Yuan, and the TRIPLE Collaboration

Parity Nonconservation in Neutron Resonances in 238U

NUCLEAR REACTIONS 238U(polarized n, n), E=10-300 eV; measured total σ, longitudinal asymmetries. 238U deduced resonance parameters, parity violating matrix element.

doi: 10.1103/PhysRevC.58.1225
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14276.


1998FR07      Phys.Rev. C57, 3144 (1998)

E.Frlez, D.Pocanic, K.A.Assamagan, J.P.Chen, K.J.Keeter, R.M.Marshall, R.C.Minehart, L.C.Smith, G.E.Dodge, S.S.Hanna, B.H.King, J.N.Knudson

Differential Cross Sections for Pion Charge Exchange on the Proton at 27.5 MeV

NUCLEAR REACTIONS 1H(π-, π0), E=27.5 MeV; measured σ(θ).

doi: 10.1103/PhysRevC.57.3144
Citations: PlumX Metrics


1998SE21      Phys.Rev. C58, 2977 (1998)

S.J.Seestrom, J.D.Bowman, B.E.Crawford, P.P.J.Delheij, C.M.Frankle, C.R.Gould, D.G.Haase, M.Iinuma, J.N.Knudson, P.E.Koehler, L.Y.Lowie, A.Masaike, Y.Masuda, Y.Matsuda, G.E.Mitchell, S.I.Penttila, Yu.P.Popov, H.Postma, N.R.Roberson, E.I.Sharapov, H.M.Shimizu, D.A.Smith, S.L.Stephenson, Y.F.Yen, V.W.Yuan

Parity Nonconservation in Neutron Capture on 113Cd

NUCLEAR REACTIONS Cd, 113Cd(polarized n, γ), E=7-520 eV; measured Eγ, Iγ, transmission spectra, total capture σ helicity dependence. 113Cd deduced resonances J, π, widths, parity-violating asymmetries.

doi: 10.1103/PhysRevC.58.2977
Citations: PlumX Metrics


1998ST14      Phys.Rev. C58, 1236 (1998)

S.L.Stephenson, J.D.Bowman, B.E.Crawford, P.P.J.Delheij, C.M.Frankle, M.Iinuma, J.N.Knudson, L.Y.Lowie, A.Masaike, Y.Matsuda, G.E.Mitchell, S.I.Penttila, H.Postma, N.R.Roberson, S.J.Seestrom, E.I.Sharapov, Y.-F.Yen, V.W.Yuan

Parity Nonconservation in Neutron Resonances in 232Th

NUCLEAR REACTIONS 232Th(polarized n, n), E=8-300 eV; measured total σ, longitudinal asymmetries. 232Th deduced resonance parameters, parity violating matrix element.

doi: 10.1103/PhysRevC.58.1236
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14323.


1997LO04      Phys.Rev. C56, 90 (1997)

L.Y.Lowie, J.D.Bowman, B.E.Crawford, P.P.J.Delheij, T.Haseyama, J.N.Knudson, A.Masaike, Y.Matsuda, G.E.Mitchell, S.I.Penttila, H.Postma, N.R.Roberson, S.J.Seestrom, E.I.Sharapov, S.L.Stephenson, Y.-F.Yen, V.W.Yuan

Neutron Resonance Spectroscopy of 107Ag and 109Ag

NUCLEAR REACTIONS 107,109Ag(n, X), E=10-800 eV; measured neutron transmission spectra. 108,110Ag deduced resonances, gΓ(n), l, J. 107Ag(n, γ), E=10-800 eV; measured Eγ, Iγ. 108Ag deduced resonance isotopic assignments.

doi: 10.1103/PhysRevC.56.90
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14059.


1997OF01      Phys.Rev. C55, 1295 (1997)

B.G.Ofenloch, R.A.Giannelli, B.G.Ritchie, J.M.O'Donnell, J.N.Knudson, C.L.Morris, C.M.Kormanyos, A.Saunders, J.Z.Williams, R.A.Lindgren, B.L.Clausen

Pion-Nucleus Spin-Flip Strength at Low and Resonance Energies

NUCLEAR REACTIONS 10B(π+, π+'), E=65 MeV; measured σ(θ). 10B deduced isovector spin-flip strength parameter, B(λ). Other data analyzed.

doi: 10.1103/PhysRevC.55.1295
Citations: PlumX Metrics


1996NA04      Phys.Rev. C53, 811 (1996)

R.Nair, H.S.Plendl, E.P.Gavathas, L.-C.Liu, R.J.Estep, B.J.Dropesky, J.D.Bowman, J.N.Knudson, B.J.Lieb, C.E.Stronach, H.O.Funsten, J.Mackenzie

Pion-Nucleus Single Charge Exchange Induced by Stopped Negative Pions

NUCLEAR REACTIONS 12C, 1H, 27Al, 31P, 32S, 45Sc, 115In(π-, π0), E at rest; measured branching ratio; deduced πN-isovector interaction implications.

doi: 10.1103/PhysRevC.53.811
Citations: PlumX Metrics


1996SZ02      Phys.Rev. C53, R2576 (1996)

J.J.Szymanski, W.M.Snow, J.D.Bowman, B.Cain, B.E.Crawford, P.P.J.Delheij, R.D.Hartman, T.Haseyama, C.D.Keith, J.N.Knudson, A.Komives, M.Leuschner, L.Y.Lowie, A.Masaike, Y.Matsuda, G.E.Mitchell, S.I.Penttila, H.Postma, D.Rich, N.R.Roberson, S.J.Seestrom, E.I.Sharapov, S.L.Stephenson, Y.F.Yen, V.W.Yuan

Observation of a Large Parity Nonconserving Analyzing Power in Xe

NUCLEAR REACTIONS Xe(polarized n, X), E ≈ resonance; measured large parity nonconserving analyzing power. Transmission through liquid Xe target, natural isotopic abundance.

doi: 10.1103/PhysRevC.53.R2576
Citations: PlumX Metrics


1995DO07      Phys.Lett. 344B, 91 (1995)

M.L.Dowell, S.Gilad, E.Piasetzky, S.Hoibraten, H.W.Baer, E.J.Beise, J.D.Bowman, G.W.Dodson, F.Irom, J.N.Knudson, G.S.Kyle, M.J.Leitch, L.D.Pham, R.P.Redwine, S.H.Rokni, L.C.Smith, D.R.Tieger, S.A.Wood

Measurements of Quasi-Elastic Pion Single Charge Exchange on 3He at T(π) = 245 MeV

NUCLEAR REACTIONS 3He(π+, π0), (π-, π0), (π+, π0p), (π-, π-p), E=245 MeV; measured σ(θ(π), E(π)), σ(θ(π), θ(p)); deduced integral σ; deduced quasifree mechanism evidence.

doi: 10.1016/0370-2693(94)01539-O
Citations: PlumX Metrics


1994KN01      Phys.Rev. C50, 909 (1994)

J.N.Knudson, J.D.Bowman, S.I.Penttila, J.R.Comfort, J.Tinsley, B.G.Ritchie, J.Gorgen, D.Mathis, S.S.Hanna, B.King, D.Pocanic, R.A.Loveman, L.S.Fritz, N.S.Dixon

Neutron Deformation in 165Ho

NUCLEAR REACTIONS 165Ho(π+, π0), E=165 MeV; measured σ(E, θ), oriented, unoriented nuclei; deduced asymmetry vs θ. 165Ho deduced neutron distribution deformation features.

doi: 10.1103/PhysRevC.50.909
Citations: PlumX Metrics


1994PO01      Phys.Rev.Lett. 72, 1156 (1994)

D.Pocanic, E.Frlez, K.A.Assamagan, J.P.Chen, K.J.Keeter, R.M.Marshall, R.C.Minehart, L.C.Smith, G.E.Dodge, S.S.Hanna, B.H.King, J.N.Knudson

Reaction π+p → π+π0p Near Threshold and Chiral Symmetry Breaking

NUCLEAR REACTIONS 1H(π+, π+π0), E=190-260 MeV; measured invariant mass spectra, π0π+-, π0p-coin; deduced total σ(E).

doi: 10.1103/PhysRevLett.72.1156
Citations: PlumX Metrics


1993BO25      Phys.Rev. C48, 1116 (1993)

J.D.Bowman, P.P.J.Delheij, C.M.Frankle, C.R.Gould, D.G.Haase, J.N.Knudson, G.E.Mitchell, S.Penttila, H.Postma, N.R.Roberson, S.J.Seestrom, J.J.Szymanski, J.J.Yeh, S.H.Yoo, V.W.Yuan, X.Zhu, and the TRIPLE Collaboration

Experimental Limit on Parity Violation in Nonresonant Neutron-Nucleus Scattering

NUCLEAR REACTIONS 232Th(polarized n, X), E=6-86 eV; measured transmission spectra, parity nonconserving longitudinal asymmetry; deduced nonresonant scattering parity violation limit.

doi: 10.1103/PhysRevC.48.1116
Citations: PlumX Metrics


1993FR13      Phys.Rev. C48, 1601 (1993)

C.M.Frankle, J.D.Bowman, B.E.Crawford, P.P.J.Delheij, C.R.Gould, D.G.Haase, J.N.Knudson, G.E.Mitchell, S.S.Patterson, S.I.Penttila, Yu.P.Popov, N.R.Roberson, S.J.Seestrom, E.I.Sharapov, Y.-F.Yen, S.H.Yoo, V.W.Yuan, X.Zhu, and the TRIPLE Collaboration

Neutron Resonance Spectroscopy of 113In and 115In

NUCLEAR REACTIONS In(n, X), E=25-500 eV; measured transmission; deduced σ(E). 115In(n, γ), E=25-500 eV; measured capture Eγ, Iγ. 114,116In deduced resonances, parameters.

doi: 10.1103/PhysRevC.48.1601
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset13591.


1993FR19      Nucl.Instrum.Methods Phys.Res. B79, 306 (1993)

C.M.Frankle, J.D.Bowman, J.N.Knudson, S.I.Penttila, S.J.Seestrom, S.H.Yoo, V.W.Yuan, C.R.Gould, D.G.Haase, G.E.Mitchell, N.R.Roberson, Yu.P.Popov, E.I.Sharapov, P.P.J.Delheij, H.Postma, and the TRIPLE Collaboration

Measurement of Parity Violation in Compound Nuclear Resonances using Epithermal Polarized Neutrons

NUCLEAR REACTIONS 81Br, 139La, 232Th, 238U(polarized n, X), E=epithermal; compiled, reviewed parity nonconserving analyzing power data.

doi: 10.1016/0168-583X(93)95351-5
Citations: PlumX Metrics


1993HA39      Nucl.Instrum.Methods Phys.Res. B79, 300 (1993)

D.G.Haase, J.D.Bowman, P.P.J.Delheij, C.M.Frankle, C.R.Gould, J.N.Knudson, J.E.Koster, G.E.Mitchell, S.Penttila, H.Postma, N.R.Roberson, S.J.Seestrom, S.H.Yoo, V.W.Yuan

Bulk Magnetic Structure Studies using Polarized Epithermal Neutrons

NUCLEAR REACTIONS Ho(polarized n, n), E=epithermal; measured neutron depolarization. Thick single ferromagnetic holmium crystal.

doi: 10.1016/0168-583X(93)95349-A
Citations: PlumX Metrics


1993PL08      Acta Phys.Pol. B24, 1649 (1993)

H.S.Plendl, R.Nair, E.P.Gavathas, L.C.Liu, R.J.Estep, B.J.Dropesky, J.D.Bowman, J.N.Knudson, B.J.Lieb, C.E.Stronach, H.O.Funsten, J.MacKenzie

Single Charge Exchange following π- Capture

NUCLEAR REACTIONS C, 1H, 27Al, 31P, 32S, 45Sc, 115In(π-, π0), E ≈ threshold; measured branching ratio relative to (π-, X); deduced target shell structure role.


1993RO25      Nucl.Instrum.Methods Phys.Res. A326, 549 (1993)

N.R.Roberson, C.D.Bowman, J.D.Bowman, P.P.J.Delheij, C.M.Frankle, C.R.Gould, D.G.Haase, J.N.Knudson, G.E.Mitchell, R.N.Mortensen, S.I.Penttila, H.Postma, S.J.Seestrom, J.J.Szymanski, S.A.Wender, S.H.Yoo, V.W.Yuan, X.Zhu

An Apparatus and Techniques of Tests for Fundamental Symmetries in Compound-Nucleus Scattering with Epithermal Polarized Neutron Beams

NUCLEAR REACTIONS 238U(polarized n, X), E=5-300 eV; measured neutron transmission. 239U resonance deduced average parity violating asymmetry.

doi: 10.1016/0168-9002(93)90858-F
Citations: PlumX Metrics


1992FR14      Phys.Rev. C46, 778 (1992)

C.M.Frankle, J.D.Bowman, J.E.Bush, P.P.J.Delheij, C.R.Gould, D.G.Haase, J.N.Knudson, G.E.Mitchell, S.Penttila, H.Postma, N.R.Roberson, S.J.Seestrom, J.J.Szymanski, S.H.Yoo, V.W.Yuan, X.Zhu, and the TRIPLE Collaboration

Parity Nonconservation for Neutron Resonances in 232Th

NUCLEAR REACTIONS 232Th(polarized n, X), E=6-400 eV; measured total σ, parity violating asymmetries. 233Th deduced resonances, p-wave parity nonconserving matrix element rms values, spreading width.

doi: 10.1103/PhysRevC.46.778
Citations: PlumX Metrics


1992FR15      Phys.Rev. C46, 1542 (1992)

C.M.Frankle, J.D.Bowman, J.E.Bush, P.P.J.Delheij, C.R.Gould, D.G.Haase, J.N.Knudson, G.E.Mitchell, S.Penttila, H.Postma, N.R.Roberson, S.J.Seestrom, J.J.Szymanski, V.W.Yuan, X.Zhu, and the TRIPLE Collaboration

Parity Nonconservation for the 0.88-eV Neutron Resonance in 81Br

NUCLEAR REACTIONS 81Br(polarized n, n), E=0.88 eV; measured parity nonconserving longitudinal analyzing power, σ for p-wave resonances.

doi: 10.1103/PhysRevC.46.1542
Citations: PlumX Metrics


1992PO13      Hyperfine Interactions 75, 153 (1992)

H.Postma, J.D.Bowman, C.D.Bowman, J.E.Bush, P.P.J.Delheij, C.M.Frankle, C.R.Gould, D.G.Haase, J.Knudson, G.E.Mitchell, S.Penttila, N.R.Roberson, S.J.Seestrom, J.J.Szymanski, S.H.Yoo, V.W.Yuan, X.Zhu, and the TRIPLE Collaboration

Parity Violation at Neutron p-Wave Resonances of 238U and 232Th and Related Questions

NUCLEAR REACTIONS 238U, 232Th(n, X), E ≈ epithermal; measured transmission. 239U, 233Th deduced p-wave resonances, parity violation matrix element rms value.

doi: 10.1007/BF02398972
Citations: PlumX Metrics


1992ZH12      Phys.Rev. C46, 768 (1992)

X.Zhu, J.D.Bowman, C.D.Bowman, J.E.Bush, P.P.J.Delheij, C.M.Frankle, C.R.Gould, D.G.Haase, J.N.Knudson, G.E.Mitchell, S.Penttila, H.Postma, N.R.Roberson, S.J.Seestrom, J.J.Szymanski, V.W.Yuan, and the TRIPLE Collaboration

Parity Nonconservation for Neutron Resonances in 238U

NUCLEAR REACTIONS 238U(polarized n, X), E=6-300 eV; measured total σ; deduced P-odd, P-even effective nucleon-nucleon interaction. 239U deduced resonances, l, gΓn, p-wave parity nonconserving matrix element rms value, spreading width.

doi: 10.1103/PhysRevC.46.768
Citations: PlumX Metrics


1991FR08      Phys.Rev.Lett. 67, 564 (1991)

C.M.Frankle, J.D.Bowman, J.E.Bush, P.P.J.Delheij, C.R.Gould, D.G.Haase, J.N.Knudson, G.E.Mitchell, S.Penttila, H.Postma, N.R.Roberson, S.J.Seestrom, J.J.Szymanski, S.H.Yoo, V.W.Yuan, X.Zhu, and the TRIPLE Collaboration

Sign Correlations and Parity Nonconservation for Neutron Resonances in 232Th

NUCLEAR REACTIONS 232Th(polarized n, n), E ≈ 8.3-392 eV; measured longitudinal analyzing power vs E, transmission yield. 232Th resonances deduced parity violation evidence statistical significance. High confidence limit measurement.

doi: 10.1103/PhysRevLett.67.564
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14143.


1991GO14      Phys.Rev.Lett. 66, 2193 (1991)

J.J.Gorgen, J.R.Comfort, J.R.Tinsley, T.Averett, J.DeKorse, G.Franklin, B.G.Ritchie, G.Kyle, A.Klein, B.Berman, G.Burleson, K.Cranston, J.A.Faucett, J.J.Jarmer, J.N.Knudson, S.Penttila, N.Tanaka, B.Brinkmoller, D.Dehnhard, Y.-F.Yen, S.Hoibraten, H.Breuer, B.S.Flanders, M.A.Khandaker, D.L.Naples, D.Zhang, M.L.Barlett, G.W.Hoffmann, M.Purcell

Analyzing Powers for Pion Charge Exchange on Polarized 13C

NUCLEAR REACTIONS 13C(π+, π0), E=163 MeV; measured σ(θ), analyzing power vs θ. Polarized target.

doi: 10.1103/PhysRevLett.66.2193
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1991HO03      Phys.Rev. C43, 1255 (1991)

S.Hoibraten, S.Gilad, W.J.Burger, R.P.Redwine, E.Piasetzky, H.W.Baer, J.D.Bowman, F.H.Cverna, F.Irom, M.J.Leitch, J.N.Knudson, S.A.Wood, S.H.Rokni

Coincidence Measurements of the (π+, π0p) Reaction at T(π+) = 165 MeV

NUCLEAR REACTIONS 16O, Fe, Sn, Pb(π+, π0p), E=165 MeV; measured σ(Eπ, θπ, θp); deduced σ(θπ, θp), σ(θπ).

doi: 10.1103/PhysRevC.43.1255
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1991KN01      Phys.Rev.Lett. 66, 1026 (1991)

J.N.Knudson, J.D.Bowman, S.I.Penttila, J.R.Comfort, B.G.Ritchie, J.Gorgen, D.Mathis, J.Tinsley, S.S.Hanna, B.King, D.Pocanic, R.A.Loveman, L.S.Fritz, N.S.Dixon

Neutron Deformation in 165Ho

NUCLEAR REACTIONS 165Ho(π+, π0), E=165 MeV; measured σ(E(π0)), orientation asymmetries. 165Ho deduced neutral, charge quadrupole deformation ratio. Aligned, unaligned targets.

doi: 10.1103/PhysRevLett.66.1026
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1991KN05      Phys.Rev. C44, 2869 (1991)

J.N.Knudson, C.L.Morris, J.D.Bowman, W.C.Sailor, S.J.Seestrom, I.Supek, M.E.Sadler, L.D.Isenhower

Search for Neutral Pions from the Spontaneous Fission of 252Cf

RADIOACTIVITY 252Cf(SF); measured π0 spectra following SF-decay; deduced π0 branching ratio upper limit.

doi: 10.1103/PhysRevC.44.2869
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1991SZ05      Nucl.Phys. A527, 701c (1991)

J.J.Szymanski, C.D.Bowman, J.D.Bowman, J.Knudson, S.Penttila, S.J.Seestrom, V.W.Yuan, J.E.Bush, C.M.Frankle, C.R.Gould, D.G.Haase, G.E.Mitchell, P.P.J.Delheij, H.Postma, N.R.Roberson, X.Zhu

Parity and Time Reversal Symmetry Nonconservation in Neutron-Nucleus Interactions

NUCLEAR REACTIONS 238U(polarized n, X), E=60-72 eV; measured transmission, resonance σ helicity dependence. 239U deduced p-, s-wave states mixing parity-violating rms matrix element, parity violating spreading width.

doi: 10.1016/0375-9474(91)90217-T
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1991YU02      Phys.Rev. C44, 2187 (1991)

V.W.Yuan, C.D.Bowman, J.D.Bowman, J.E.Bush, P.P.J.Delheij, C.M.Frankle, C.R.Gould, D.G.Haase, J.N.Knudson, G.E.Mitchell, S.Penttila, H.Postma, N.R.Roberson, S.J.Seestrom, J.J.Szymanski, X.Zhu

Parity Nonconservation in Polarized-Neutron Transmission Through 139La

NUCLEAR REACTIONS 139La(polarized n, X), E=0.5-1 eV; measured transmission. 140La resonance deduced asymmetry. Parity nonconservation, longitudinal beam polarization.

doi: 10.1103/PhysRevC.44.2187
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1990BO26      Phys.Rev.Lett. 65, 1192 (1990)

J.D.Bowman, C.D.Bowman, J.E.Bush, P.P.Delheij, C.M.Frankle, C.R.Gould, D.G.Haase, J.Knudson, G.E.Mitchell, S.Penttila, H.Postma, N.R.Roberson, S.J.Seestrom, J.J.Szymanski, V.W.Yuan, X.Zhu

Parity Nonconservation for Neutron Resonances in 238U

NUCLEAR REACTIONS 238U(n, X), E=epithermal; measured transmission, σ(E) vs helicity. 239U levels deduced parity nonconservation.

doi: 10.1103/PhysRevLett.65.1192
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1990GO36      J.Phys.(Paris), Colloq.C-6, 583 (1990)

J.Gorgen, J.Comfort, T.Averett, J.DeKorse, G.Franklin, B.Ritchie, J.Tinsley, G.Kyle, B.Berman, G.R.Burleson, K.Cranston, A.Klein, J.A.Faucett, J.Jarmer, J.N.Knudson, S.Penttila, N.Tanaka, B.Brinkmoller, D.Dehnhard, Y.F.Yen, H.Breuer, M.A.Khandaker, D.L.Naples, B.S.Flanders, D.Zhang, M.Barlett, G.W.Hoffmann, M.Purcell, S.Hoibraten

Analyzing Power Measurements for the (π+, π0) Reaction on a Polarized 13C Target at T(π+) = 163 MeV

NUCLEAR REACTIONS 13C(π+, π0), E=163 MeV; measured σ(θ), analyzing power vs θ. Polarized target. DWIA analyses.


1990PE19      J.Phys.(Paris), Colloq.C-6, 523 (1990)

S.Penttila, C.D.Bowman, J.D.Bowman, J.E.Bush, P.P.J.Delheij, C.M.Frankle, C.R.Gould, D.G.Haase, J.N.Knudson, G.E.Mitchell, H.Postma, N.R.Roberson, S.J.Seestrom, J.J.Szymanski, V.M.Yuan, X.Zhu

Parity Violation in 239U Neutron Resonances

NUCLEAR REACTIONS 238U(polarized n, X), E ≤ 250 eV; measured asymmetry in transmission; deduced parity violating matrix element rms value, effective NN-interaction parameter. 239U resonances deduced parity-violating spreading width.


1989LE11      Phys.Rev. C39, 2356 (1989)

M.J.Leitch, H.W.Baer, R.L.Burman, C.L.Morris, J.N.Knudson, J.R.Comfort, D.H.Wright, R.Gilman, S.H.Rokni, E.Piasetzky, Z.Weinfeld, W.R.Gibbs, W.B.Kaufmann

14C(π+, π-)14O Reaction between 19 and 80 MeV

NUCLEAR REACTIONS 14C(π+, π-)14O, E=19-80 MeV; measured σ(θ) vs E. 14O deduced double IAS excitation. DWIA, optical model.

doi: 10.1103/PhysRevC.39.2356
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1989LO12      Phys.Rev. C40, 2710 (1989)

R.A.Loveman, B.L.Clausen, R.J.Peterson, S.H.Rokni, H.W.Baer, A.G.Bergmann, J.D.Bowman, F.Irom, C.J.Seftor, J.Alster, E.Piasetzky, J.N.Knudson, U.Sennhauser

Pion Charge Exchange to the Isovector Giant Dipole State at Energies Above the 3-3 Resonance

NUCLEAR REACTIONS 27Al, 60Ni, 90Zr, 120Sn, 208Pb(π+, π0), E=300, 425, 500 MeV; measured σ(θ(π), E(π)). 27Si, 60Cu, 90Nb, 120Sb, 208Bi deduced GDR, IAS excitation.

doi: 10.1103/PhysRevC.40.2710
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1988RO03      Phys.Lett. 202B, 35 (1988)

S.H.Rokni, H.W.Baer, A.G.Bergmann, J.D.Bowman, F.Irom, M.J.Leitch, C.J.Seftor, J.Alster, E.Piasetzky, B.L.Clausen, R.A.Loveman, R.J.Peterson, J.L.Ullmann, J.R.Comfort, J.N.Knudson, U.Sennhauser

Isobaric-Analog-State Transitions in Pion Charge-Exchange Reactions above the Δ(1232) Resonance

NUCLEAR REACTIONS 14C, 7Li(π+, π0), E=300-550 MeV; 27Al, 60Ni(π+, π0), E=300, 425, 500 MeV; 90Zr, 120Sn, 208Pb(π+, π0), E=300, 425 MeV; measured σ(θ), σ(θ, E); deduced IAS excitation incident energy dependence.

doi: 10.1016/0370-2693(88)90849-0
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1987BA14      Phys.Rev. C35, 1425 (1987)

H.W.Baer, M.J.Leitch, R.L.Burman, M.D.Cooper, A.Z.Cui, B.J.Dropesky, G.C.Giesler, F.Irom, C.L.Morris, J.N.Knudson, J.R.Comfort, D.H.Wright, R.Gilman

Double-Analog Transition 48Ca(π+, π-)48Ti at 35 and 50 MeV

NUCLEAR REACTIONS 48Ca(π+, π-), E=35 MeV; measured σ(θ), σ(E(π)); deduced model parameters. Second-order optical potential calculations.

doi: 10.1103/PhysRevC.35.1425
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1987CA20      Nucl.Phys. A470, 349 (1987)

J.R.Campbell, W.R.Falk, N.E.Davison, J.Knudson, R.Aryaeinejad, R.Tkachuk

Tensor Polarization of 12C(15.11 MeV, J(π) = 1+) in the 13C(p, d)12C( → 12C g.s. + γ) Reaction at E(p) = 41.3 MeV

NUCLEAR REACTIONS, MECPD 13C(p, d), E=41.3 MeV; measured σ(θ). 12C level deduced polarization tensor. Enriched target. DWBA analysis.

doi: 10.1016/0375-9474(87)90007-8
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1987IR01      Phys.Rev. C36, 1453 (1987)

F.Irom, H.W.Baer, A.G.Bergmann, J.D.Bowman, P.Heusi, D.H.Fitzgerald, C.J.Seftor, M.E.Sadler, J.N.Knudson, W.J.Briscoe, P.W.F.Alons, E.Piasetzky, S.H.Rokni

Mass Dependence of Pion Single-Charge Exchange of the Isobaric Analog State at 20 MeV

NUCLEAR REACTIONS 7Li, 14C, 15N, 120Sn(π+, π0), E=20 MeV; measured σ(π0), σ(θ). 7Be, 14N, 15O, 120Sb deduced IAS excitation σ. Optical model.

doi: 10.1103/PhysRevC.36.1453
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1987KN02      Phys.Rev. C35, 1382 (1987)

J.N.Knudson, J.R.Comfort, R.A.Gianelli, B.G.Ritchie, D.Rothenberger, D.Pocanic, S.S.Hanna, J.D.Bowman, H.W.Baer, A.G.Bergmann, P.A.Heusi, F.Irom, C.J.Seftor, S.Hoibraten, R.A.Loveman, S.H.Rokni, H.Crannell, D.I.Sober, W.J.Fickinger, H.Marshak

Excitation of the Isobaric Analog State of 165Ho Pion Single-Charge Exchange

NUCLEAR REACTIONS 165Ho(π+, π0), E=98, 163.2, 228.3 MeV; measured π0 yield, θ=4°-6°. 120Sn(π+, π0), E=98-165 MeV; analyzed data; deduced reaction systematics vs mass. 165Er deduced IAS excitation σ.

doi: 10.1103/PhysRevC.35.1382
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1987UL01      Phys.Rev. C35, 1099 (1987)

J.L.Ullmann, P.W.F.Alons, B.L.Clausen, J.J.Kraushaar, J.H.Mitchell, R.J.Peterson, R.A.Ristinen, R.L.Boudrie, N.S.P.King, C.L.Morris, J.N.Knudson, E.F.Gibson

Pion Scattering to Collective Excitations in 90Zr and 118Sn

NUCLEAR REACTIONS 118Sn, 90Zr(π+, π+'), (π-, π-'), E=163 MeV; measured σ(θ). 118Sn, 90Zr levels deduced deformation lengths, GQR, giant monopole sum rule strengths, σ ratios.

doi: 10.1103/PhysRevC.35.1099
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1986FI11      Phys.Rev. C34, 619 (1986)

D.H.Fitzgerald, H.W.Baer, J.D.Bowman, M.D.Cooper, F.Irom, N.S.P.King, M.J.Leitch, E.Piasetzky, W.J.Briscoe, M.E.Sadler, K.J.Smith, J.N.Knudson

Forward-Angle Cross Sections for Pion-Nucleon Charge Exchange between 100 and 150 MeV/c

NUCLEAR REACTIONS 1H(π-, π0), E at 100-150 MeV/c; measured σ(θ) vs momentum; deduced σ(θ=0°), s-, p-wave interference minimum parameters, isospin-odd, s-wave scattering length. Partial wave analyses.

doi: 10.1103/PhysRevC.34.619
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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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1986UL01      Phys.Rev. C33, 2092 (1986)

J.L.Ullmann, P.W.F.Alons, J.J.Kraushaar, J.H.Mitchell, R.J.Peterson, R.A.Ristinen, J.N.Knudson, J.R.Comfort, H.W.Baer, J.D.Bowman, M.D.Cooper, D.H.Fitzgerald, F.Irom, M.J.Leitch, E.Piasetzky

Pion Single Charge Exchange on 14C from 35 to 295 MeV

NUCLEAR REACTIONS 14C(π+, π0), E=35-295 MeV; measured σ(θ), σ(E(π)); deduced parameters. 14N deduced IAS excitation σ. Comparison with models.

doi: 10.1103/PhysRevC.33.2092
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1985AR03      Nucl.Phys. A436, 1 (1985)

R.Aryaeinejad, W.R.Falk, N.E.Davison, J.N.Knudson, J.R.Campbell

T = (1/2) and (3/2) Negative-Parity States in 11B with the 14C(p, α)11B Reaction

NUCLEAR REACTIONS 14C(p, α), E=41.9 MeV; measured σ(Eα), σ(θ). 11B deduced levels, Γ, T, spectroscopic strengths. Enriched target. DWBA, cluster form factors.

doi: 10.1016/0375-9474(85)90540-8
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1985IR02      Phys.Rev.Lett. 55, 1862 (1985)

F.Irom, M.J.Leitch, H.W.Baer, J.D.Bowman, M.D.Cooper, B.J.Dropesky, E.Piasetzky, J.N.Knudson

Energy and Mass Dependence of Low-Energy Pion Single Charge Exchange to the Isobaric Analog State

NUCLEAR REACTIONS 7Li, 14C, 15N, 39K, 120Sn(π+, π0), E ≈ 30-80 MeV; measured σ(θ), σ(E(π0)); deduced medium effects suppression evidence, parameter mass dependence. 7Be, 14N, 15O, 39Ca, 120Sb deduced IAS excitation. Pion energy quadratic function fit.

doi: 10.1103/PhysRevLett.55.1862
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1985LE05      Phys.Rev.Lett. 54, 1482 (1985)

M.J.Leitch, E.Piasetzky, H.W.Baer, J.D.Bowman, R.L.Burman, B.J.Dropesky, P.A.M.Gram, F.Irom, D.Roberts, G.A.Rebka, Jr., J.N.Knudson, J.R.Comfort, V.A.Pinnick, D.H.Wright, S.A.Wood

Double Analog Transition 14C(π+, π-)14O at 50 MeV

NUCLEAR REACTIONS 14C(π+, π-), E=50 MeV; measured σ(θ, E(π)), missing mass spectra, pion yields, σ(θ); deduced σ. 14O deduced double IAS excitation dominance. Sequential optical model, six quark bag model analyses.

doi: 10.1103/PhysRevLett.54.1482
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1982AN08      Phys.Rev. C26, 8 (1982)

B.D.Anderson, R.J.McCarthy, M.Ahmad, A.Fazely, A.M.Kalenda, J.N.Knudson, J.W.Watson, R.Madey, C.C.Foster

Comparison of 0°(p, n) Cross Sections and B(M1) Values for Separating Current and Spin Contributions to Isovector M1 Transitions

NUCLEAR REACTIONS 12C, 16O, 24,26Mg, 28Si, 48Ca(p, n), E=62-160 MeV; analyzed σ(θ=0°) vs E. 12N, 24,26Al, 16F, 28P, 48Sc level deduced σ/B(M1) spin, current contribution dependence. Inelastic electron scattering data input.

doi: 10.1103/PhysRevC.26.8
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1982MA22      Phys.Rev. C25, 3050 (1982)

R.Madey, T.Vilaithong, B.D.Anderson, J.N.Knudson, T.R.Witten, A.R.Baldwin, F.M.Waterman

Neutrons from Nuclear Capture of Negative Pions

NUCLEAR REACTIONS C, N, O, Al, Cu, Ta, Pb(π-, xn), E ≈ 0; measured σ(En), yields; deduced nuclear temperature. Tof. Intranuclear cascade, preequilibrium models.

doi: 10.1103/PhysRevC.25.3050
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1980AN05      Nucl.Instrum.Methods 169, 153 (1980)

B.D.Anderson, J.N.Knudson, R.Madey, C.C.Foster

A Comparison of 12C(p, n)12N and 12C(p, p')12C* Cross-Section Measurements to Analog States as a Test of Monte-Carlo Calculated Efficiencies for Large-Volume Neutron Counters

NUCLEAR REACTIONS 12C(p, n), E=61.9, 119.8 MeV; measured σ. 12C level deduced isospin mixing. Tof, large-volume detector.

doi: 10.1016/0029-554X(80)90115-9
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1980AN19      Phys.Rev.Lett. 45, 699 (1980)

B.D.Anderson, J.N.Knudson, P.C.Tandy, J.W.Watson, R.Madey, C.C.Foster

Observation of a T(>) Gamow-Teller State in 48Ca(p, n)48Sc at 160 MeV

NUCLEAR REACTIONS 48Ca(p, n), E=160 MeV; measured σ(En, θ). 48Sc deduced level, isospin, Gamow-Teller transition strength, giant M1 analog. Shell model, tof.

doi: 10.1103/PhysRevLett.45.699
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1980KN02      Phys.Rev. C22, 1826 (1980)

J.N.Knudson, B.D.Anderson, P.C.Tandy, J.W.Watson, R.Madey, C.C.Foster

12C(p, n)12N Reaction at 99 MeV

NUCLEAR REACTIONS 12C(p, n), E=99.1 MeV; measured σ(En, θ). DWIA calculations, effective nucleon-nucleon interaction.

doi: 10.1103/PhysRevC.22.1826
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