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NSR database version of April 11, 2024.

Search: Author = C.Howell

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2023HA27      Phys.Rev.Lett. 131, 052502 (2023)

S.J.Haselschwardt, B.G.Lenardo, T.Daniels, S.W.Finch, F.Q.L.Friesen, C.R.Howell, C.R.Malone, E.Mancil, W.Tornow

Observation of Low-Lying Isomeric States in 136Cs: A New Avenue for Dark Matter and Solar Neutrino Detection in Xenon Detectors

NUCLEAR REACTIONS 136Xe(p, n), E=7 MeV; measured reaction products, Eγ, Iγ; deduced γ-ray energies, J, π, partial level scheme, isomeric state T1/2. Comparison with available data. The Triangle Universities Nuclear Laboratory.

doi: 10.1103/PhysRevLett.131.052502
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Data from this article have been entered in the XUNDL database. For more information, click here.


2023RA05      Phys.Rev. C 107, 054608 (2023)

A.P.D.Ramirez, J.A.Silano, R.C.Malone, M.A.Stoyer, A.P.Tonchev, M.E.Gooden, J.B.Wilhelmy, S.W.Finch, C.R.Howell, Krishichayan, W.Tornow

Fission product yields from the 238U(n, f) reaction at En = 4.6 MeV

NUCLEAR REACTIONS 238U(n, F)86mKr/86Kr/88Kr/89Rb/91Sr/92Sr/94Y/97Nb/101Mo/104Tc/105Ru/129Sb/131Te/131Sb/133I/134Te/134I/135Xe/138Xe/138Cs/139Ba/141Ba/142Ba/142La/146Ce/146Pr/147Pr/84As/86Se/86Br/87Br/88Br/89Kr/90Kr/91Kr/91Rb/92Kr/93Kr/93Rb/93Sr/94Rb/94Sr/95Sr/96Sr/96mY/96Y/97mY/98Sr/98mY/99Zr/99Nb/100Y/100Zr/101Zr/101Nb/102Zr/103Tc/106Tc/130Sn/132Sn/133Sb/134mSb/135Te/136Te/136mI/137Xe/138I/139Xe/140Xe/140Cs/141Xe/142Cs/142Ba/143Cs/143Ba/144La/145Ce/148La, E=4.6 MeV; measured neutron time-of-flight, Eγ, Iγ; deduced cumulative fission product yields. Comparison to experimental and evaluated data from ENDF/B-VIII.0 and JEFF-3.3 libraries and with theoretical models using the GEF and FREYA codes. Cyclic activation technique using the RApid Belt-driven Irradiated Target Transfer System (RABITTS) at the 10 MV tandem Van de Graaff accelerator (TUNL).

doi: 10.1103/PhysRevC.107.054608
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2022HO01      J.Phys.(London) G49, 010502 (2022)

C.R.Howell, M.W.Ahmed, A.Afanasev, D.Alesini, J.R.M.Annand, A.Aprahamian, D.L.Balabanski, S.V.Benson, A.Bernstein, C.R.Brune, J.Byrd, B.E.Carlsten, A.E.Champagne, S.Chattopadhyay, D.Davis, E.J.Downie, J.M.Durham, G.Feldman, H.Gao, C.G.R.Geddes, H.W.Griesshammer, R.Hajima, H.Hao, D.Hornidge, J.Isaak, R.V.F.Janssens, D.P.Kendellen, M.Kovash, P.P.Martel, U.-G.Meissner, R.Miskimen, B.Pasquini, D.R.Phillips, N.Pietralla, D.Savran, M.R.Schindler, M.H.Sikora, W.M.Snow, R.P.Springer, C.Sun, C.Tang, B.Tiburzi, A.P.Tonchev, W.Tornow, C.A.Ur, D.Wang, H.R.Weller, V.Werner, Y.K.Wu, J.Yan, Z.Zhao, A.Zilges, F.Z.Zomer

International workshop on next generation gamma-ray source

doi: 10.1088/1361-6471/ac2827
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2022LI18      Phys.Rev.Lett. 128, 132502 (2022)

X.Li, M.W.Ahmed, A.Banu, C.Bartram, B.Crowe, E.J.Downie, M.Emamian, G.Feldman, H.Gao, D.Godagama, H.W.Griesshammer, C.R.Howell, H.J.Karwowski, D.P.Kendellen, M.A.Kovash, K.K.H.Leung, D.M.Markoff, J.A.McGovern, S.Mikhailov, R.E.Pywell, M.H.Sikora, J.A.Silano, R.S.Sosa, M.C.Spraker, G.Swift, P.Wallace, H.R.Weller, C.S.Whisnant, Y.K.Wu, Z.W.Zhao

Proton Compton Scattering from Linearly Polarized Gamma Rays

NUCLEAR REACTIONS 1H(polarized γ, γ'), E=83.4 MeV; measured reaction products, Eγ, Iγ; deduced σ(θ), electromagnetic dipole polarizabilities of the proton. The High Intensity Gamma-Ray Source facility at the Triangle Universities Nuclear Laboratory.

doi: 10.1103/PhysRevLett.128.132502
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2022MA59      Phys.Lett. B 835, 137557 (2022)

R.C.Malone, A.S.Crowell, L.C.Cumberbatch, B.A.Fallin, F.Q.L.Friesen, C.R.Howell, C.R.Malone, D.R.Ticehurst, W.Tornow, D.M.Markoff, B.J.Crowe, H.Witala

Measurement of the 1S0 neutron-neutron effective range in neutron-deuteron breakup

NUCLEAR REACTIONS 2H(n, X), E<18 MeV; measured reaction products, En, In; deduced σ(θ, E), neutron-neutron effective range parameter from neutron-neutron quasifree scattering in neutron-deuteron breakup. The tandem accelerator facility at the Triangle Universities Nuclear Laboratory.

doi: 10.1016/j.physletb.2022.137557
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2020LI10      Phys.Rev. C 101, 034618 (2020)

X.Li, M.W.Ahmed, A.Banu, C.Bartram, B.Crowe, E.J.Downie, M.Emamian, G.Feldman, H.Gao, D.Godagama, H.W.Griesshammer, C.R.Howell, H.J.Karwowski, D.P.Kendellen, M.A.Kovash, K.K.H.Leung, D.Markoff, S.Mikhailov, R.E.Pywell, M.H.Sikora, J.A.Silano, R.S.Sosa, M.C.Spraker, G.Swift, P.Wallace, H.R.Weller, C.S.Whisnant, Y.K.Wu, Z.W.Zhao

Compton scattering from 4He at the TUNL HIγS facility

NUCLEAR REACTIONS 4He(polarized γ, γ), E=81.3 MeV, 100% circularly and linearly polarized γ-ray beam via Compton backscattering from HiγS at TUNL; measured Compton scattered photons at different angles, time-of-flight spectra using an array of large NaI(Tl) detectors; deduced differential σ(θ). Comparison with previous experimental data from Lund at Eγ=87 MeV.

doi: 10.1103/PhysRevC.101.034618
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetL0259.


2020MA12      Phys.Rev. C 101, 034002 (2020)

R.C.Malone, A.S.Crowell, L.C.Cumberbatch, B.A.Fallin, F.Q.L.Friesen, C.R.Howell, C.R.Malone, D.R.Ticehurst, W.Tornow, D.M.Markoff, B.J.Crowe, H.Witala

Neutron-neutron quasifree scattering in neutron-deuteron breakup at 10 MeV

NUCLEAR REACTIONS 2H(n, 2n), E=10.0 MeV; measured En, In, nn-coin, and differential σ(θ) of neutron-neutron quasi-free scattering (QSF) in neutron-deuteron breakup using isotopically enriched deuterated polyethylene CD2 target, and neutron time-of-flight technique for neutrons detected using liquid scintillator detectors at TUNL; deduced deuteron breakup cross section. Comparison with few-nucleon calculations using CD Bonn nuclear potential in the Faddeev formalism.

doi: 10.1103/PhysRevC.101.034002
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14633.


2019KR10      Phys.Rev. C 100, 014608 (2019)

Krishichayan, M.Bhike, C.R.Howell, A.P.Tonchev, W.Tornow

Fission product yield measurements using monoenergetic photon beams

NUCLEAR REACTIONS 235,238U, 239Pu(polarized γ, F)84Br/85mKr/87Kr/88Kr/91Sr/92Sr/92Y/93Y/94Y/95Zr/97Zr/99Mo/103Ru/104Tc/105Ru/105Rh/115Cd/127Sb/128Sn/129Sb/130Sb/131Sb/131I/132Te/132Cs/133Te/133I/134Te/135I/136Cs/138Cs/139Ba/140Ba/141Ba/141Ce/142La/143Ce/146Pr/147Nd/149Nd/151Pm, E=13 MeV; measured fission fragments, Eγ, Iγ, fission product yields (FPY) using dual fission chamber for fission fragments and offline γ detection at TUNL-HIγS facility. Comparison with previous experimental neutron- and photon-induced fission product yields.

RADIOACTIVITY 91,92Sr, 142La(β-)[from 235,238U, 239Pu(polarized γ, F), E=13 MeV at TUNL-HIγS facility]; measured half-lives of decay of 91Sr, 92Sr, and 142La, and compared with values from ENSDF database at NNDC.

doi: 10.1103/PhysRevC.100.014608
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetL0225. Data from this article have been entered in the XUNDL database. For more information, click here.


2018KR03      Phys.Rev. C 98, 014608 (2018), Erratum Phys.Rev. C 107, 039906 (2023)

Krishichayan, S.W.Finch, C.R.Howell, A.P.Tonchev, W.Tornow

Monoenergetic photon-induced fission cross-section ratio measurements for 235U, 238U, and 239Pu from 9.0 to 17.0 MeV

NUCLEAR REACTIONS 235,238U, 239Pu(polarized γ, F), E=9.0-17.0 MeV; measured fission fragments, photofission σ(E), cross sections ratios for the target nuclei using dual-fission ionization chamber (DFC), and quasimonoenergetic Compton backscattered photon beam from HIγS facility of TUNL. Comparison with previous experimental values, with evaluated data in ENDF/B-VII.1 library, and with theoretical calculations using TENDL-2009 code.

doi: 10.1103/PhysRevC.98.014608
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetL0233.


2018YA23      Phys.Rev. C 98, 054621 (2018)

S.A.Yates, B.Fallin, C.R.Howell, Krishichayan, W.Tornow, S.M.Grimes

Measurement of the 80Se (γ, n) reaction with linearly polarized γ rays

NUCLEAR REACTIONS 80Se(polarized γ, n), E=15.6, 15.8, 16.0 MeV; measured E(n), I(n), neutron time-of-flight, differential σ(E, θ), total σ, linear polarization using liquid-scintillation detectors for neutron detection at HIGS-TUNL facility; deduced reaction matrix elements; data analyzed using (γ, n) reaction angular correlation formalism. 79Se; deduced nuclear level density, GDR, nuclear level density model that fits the data best. Comparison with statistical model calculations using Hauser-Feshbach formalism, and with previous experimental values. Relevance to time reversed 79Se(n, γ) reaction, and s-process formation of 82Kr.

doi: 10.1103/PhysRevC.98.054621
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetL0238.


2017CA06      Prog.Part.Nucl.Phys. 94, 68 (2017)

J.Carlson, M.P.Carpenter, R.Casten, C.Elster, P.Fallon, A.Gade, C.Gross, G.Hagen, A.C.Hayes, D.W.Higinbotham, C.R.Howell, C.J.Horowitz, K.L.Jones, F.G.Kondev, S.Lapi, A.Macchiavelli, E.A.McCutchan, J.Natowitz, W.Nazarewicz, T.Papenbrock, S.Reddy, M.J.Savage, G.Savard, B.M.Sherrill, L.G.Sobotka, M.A.Stoyer, M.B.Tsang, K.Vetter, I.Wiedenhoever, A.H.Wuosmaa, S.Yennello

White paper on nuclear astrophysics and low-energy nuclear physics, Part 2: Low-energy nuclear physics

doi: 10.1016/j.ppnp.2016.11.002
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2017KR02      Nucl.Instrum.Methods Phys.Res. A854, 40 (2017)

Krishichayan, M.Bhike, S.W.Finch, C.R.Howell, A.P.Tonchev, W.Tornow

Photofission cross-section ratio measurement of 235U/238U using monoenergetic photons in the energy range of 9.0-16.6 MeV

NUCLEAR REACTIONS 235,238U(γ, F), E=9.0-16.6 MeV; measured fission fragments, Eγ, Iγ; deduced fission σ ratio. Comparison with experimental and ENDF/B-VII.1 evaluated data.

doi: 10.1016/j.nima.2017.02.043
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetL0222.


2017SI26      Phys.Rev. C 96, 055209 (2017)

M.H.Sikora, M.W.Ahmed, A.Banu, C.Bartram, B.Crowe, E.J.Downie, G.Feldman, H.Gao, H.W.Griesshammer, H.Hao, C.R.Howell, H.J.Karwowski, D.P.Kendellen, M.A.Kovash, X.Li, D.M.Markoff, S.Mikhailov, V.Popov, R.E.Pywell, J.A.Silano, M.C.Spraker, P.Wallace, H.R.Weller, C.S.Whisnant, Y.K.Wu, W.Xiong, X.Yan, Z.W.Zhao

Compton scattering from 4He at 61 MeV

NUCLEAR REACTIONS 4He(γ, γ'), E=61 MeV; measured Eγ, Iγ, Compton scattering differential σ(θ) using NaI(Tl) detectors and liquid 4He target at HIγS facility at TUNL. Data interpreted using phenomenological model sensitive to the dipole isoscalar electromagnetic polarizabilities of the nucleon. Comparison with previous experimental data. Benchmarks for future calculations from effective field theories and lattice quantum chromodynamics.

doi: 10.1103/PhysRevC.96.055209
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetL0232.


2016GO02      Nucl.Data Sheets 131, 319 (2016)

M.E.Gooden, C.W.Arnold, J.A.Becker, C.Bhatia, M.Bhike, E.M.Bond, T.A.Bredeweg, B.Fallin, M.M.Fowler, C.R.Howell, J.H.Kelley, Krishichayan, R.Macri, G.Rusev, C.Ryan, S.A.Sheets, M.A.Stoyer, A.P.Tonchev, W.Tornow, D.J.Vieira, J.B.Wilhelmy

Energy Dependence of Fission Product Yields from 235U, 238U and 239Pu for Incident Neutron Energies Between 0.5 and 14.8 MeV

NUCLEAR REACTIONS 235,238U, 239Pu(n, F), E=0.5-14.8 MeV; measured reaction products, Eγ, Iγ; deduced fission yields.

doi: 10.1016/j.nds.2015.12.006
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14555.


2015BH09      Phys.Rev. C 91, 064604 (2015)

C.Bhatia, B.F.Fallin, M.E.Gooden, C.R.Howell, J.H.Kelley, W.Tornow, C.W.Arnold, E.Bond, T.A.Bredeweg, M.M.Fowler, W.Moody, R.S.Rundberg, G.Y.Rusev, D.J.Vieira, J.B.Wilhelmy, J.A.Becker, R.Macri, C.Ryan, S.A.Sheets, M.A.Stoyer, A.P.Tonchev

Exploratory study of fission product yields of neutron-induced fission of 235U, 238U, and 239Pu at 8.9 MeV

NUCLEAR REACTIONS 235,238U, 239Pu(n, F), E=8.9 MeV; measured Eγ, Iγ of fission products of 92Sr, 97Zr, 99Mo, 105Ru, 132Te, 133I, 140Ba, 143Ce, 147Nd at TUNL facility; deduced absolute fission product yields by γ activation method. Comparison with previous experimental results.

doi: 10.1103/PhysRevC.91.064604
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14423.


2014BH11      Nucl.Data Sheets 119, 324 (2014)

C.Bhatia, B.Fallin, C.Howell, W.Tornow, M.Gooden, J.Kelley, C.Arnold, E.Bond, T.Bredeweg, M.Fowler, W.Moody, R.Rundberg, G.Rusev, D.Vieira, J.Wilhelmy, J.Becker, R.Macri, C.Ryan, S.Sheets, M.Stoyer, A.Tonchev

Fission Product Yield Study of 235U, 238U and 239Pu Using Dual-Fission Ionization Chambers

NUCLEAR REACTIONS 235,238U, 239Pu(n, F), E=4.6, 9.0, 14.5 MeV; measured Eγ, Iγ(t) from fission fragments using dual fission chamber; deduced fission products yield ratio. Compared with other data and libraries.

doi: 10.1016/j.nds.2014.08.089
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14423.


2014BR06      Phys.Rev.Lett. 112, 212301 (2014)

L.J.Broussard, H.O.Back, M.S.Boswell, A.S.Crowell, P.Dendooven, G.S.Giri, C.R.Howell, M.F.Kidd, K.Jungmann, W.L.Kruithof, A.Mol, C.J.G.Onderwater, R.W.Pattie, Jr., P.D.Shidling, M.Sohani, D.J.van der Hoek, A.Rogachevskiy, E.Traykov, O.O.Versolato, L.Willmann, H.W.Wilschut, A.R.Young

Measurement of the Half-Life of the T= 1/2 Mirror Decay of 19Ne and its Implication on Physics Beyond the Standard Model

RADIOACTIVITY 19Ne(EC) [from 19F(p, n), E=10.5 MeV/nucleon]; measured decay products, Eγ, Iγ; deduced T1/2. Comparison with available data and systematics.

doi: 10.1103/PhysRevLett.112.212301
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Data from this article have been entered in the XUNDL database. For more information, click here.


2014GO18      Nucl.Data Sheets 119, 121 (2014)

M.E.Gooden, B.A.Fallin, S.W.Finch, J.H.Kelley, C.R.Howell, G.Rusev, A.P.Tonchev, W.Tornow, V.Stanislav

Partial Cross Sections of Neutron-Induced Reactions on natCu at En = 6, 8, 10, 12, 14, and 16 MeV for Oνββ Background Studies

NUCLEAR REACTIONS 63,65Cu(n, n'γ), E=6, 8, 10, 12, 14, 16 MeV; measured Eγ, Iγ(θ) using HPGe; deduced discrete level gated σ using γ ray angular distribution from Dicebox code; calculated discrete level gated σ using TALYS. Compared with ENDF/B-VII.1 and LANL data. Preliminary.

doi: 10.1016/j.nds.2014.08.034
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2014WE04      Phys.Rev. C 89, 054001 (2014)

G.J.Weisel, W.Tornow, A.S.Crowell, J.H.Esterline, G.M.Hale, C.R.Howell, P.D.O'Malley, J.R.Tompkins, H.Witala

Neutron-deuteron analyzing power data at En = 22.5 MeV

NUCLEAR REACTIONS 2H(polarized n, n), [polarized neutrons from 2H(polarized d, n) reaction], E=22.5 MeV; measured E(n), I(n), n-d analyzing power Ay(θ) using ABPIS facility at TUNL. Monte-Carlo simulations. Comparison with Faddeev calculations using several different NN potentials. Discussed three-nucleon analyzing power puzzle.

doi: 10.1103/PhysRevC.89.054001
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14395.


2013MA39      Phys.Rev. C 87, 054613 (2013)

S.MacMullin, M.Kidd, R.Henning, W.Tornow, C.R.Howell, M.Brown

Measurement of the elastic scattering cross section of neutrons from argon and neon

NUCLEAR REACTIONS 20Ne(n, n), E=5.0, 8.0 MeV; 40Ar(n, n), E=6.0 MeV; measured neutron and γ-ray spectra, TOF, σ, differential σ(θ) using liquid scintillator detectors at TUNL facility. Spherical optical model (SOM) analysis of experimental data using the GENOA computer code. Comparison with Koning and Delaroche local optical-model parameters, and with ENDF/B-VII.0 parameters. Relevance to neutron background contributions in direct dark matter searches. Accurate data for benchmarking global optical models. Improved cross-section libraries for the GEANT4 simulation code.

doi: 10.1103/PhysRevC.87.054613
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14371.


2012AL15      Phys.Rev. C 86, 034603 (2012)

M.A.Al-Ohali, J.P.Delaroche, C.R.Howell, M.M.Nagadi, A.A.Naqvi, W.Tornow, R.L.Walter, G.J.Weisel

Neutron scattering from 28Si and 32S from 8.0 to 18.9 MeV, dispersive optical model analyses, and ground-state correlations

NUCLEAR REACTIONS 28Si(n, n), E=15.4, 18.9 MeV; 32S(n, n), E=8.0, 9.9, 11.9, 13.9, 15.4, 16.9, 18.9 MeV; measured E(n), I(n), TOF, σ(E, θ), total σ(E), Ay(θ); deduced optical model potentials parameters by nucleon-nucleus dispersive optical model (DOM) analysis in the continuum and bound-state regions. 28Si(n, n), E=2.45-65.0; 32S(n, n), E=3.0-40.0 MeV; analyzed σ(E, θ) and Ay(θ) data from previous experiments by DOM. 28Si, 32S(n, n), E=2-160 MeV; analyzed total σ(E) by DOM. 28Si, 32S; deduced neutron and proton binding energies, occupation probabilities, root-mean-square radii, spectroscopic factors, and compared with variational multiparticle multihole configuration mixing (mp-mh CM) shell-model calculation using the Gogny D1S effective force.

doi: 10.1103/PhysRevC.86.034603
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14345.


2012AR01      Phys.Rev. C 85, 044605 (2012)

C.W.Arnold, T.B.Clegg, C.Iliadis, H.J.Karwowski, G.C.Rich, J.R.Tompkins, C.R.Howell

Cross-section measurement of 9Be(γ, n)8Be and implications for α+α+n → 9Be in the r process

NUCLEAR REACTIONS 9Be(γ, n)8Be, E=1.5-5.2 MeV; measured neutron spectra, Eγ, σ(E) using HIγS facility at TUNL. 9Be; deduced resonance energies, neutron and gamma widths, B(E1), B(M1), neutron branching ratios. Deduced astrophysical reaction rate for 4He(αn, γ)9Be reaction for r-process nucleosynthesis sites. Comparison with previous studies using (γ, n) and (e, e') reactions.

doi: 10.1103/PhysRevC.85.044605
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetL0171. Data from this article have been entered in the XUNDL database. For more information, click here.


2012CO11      Phys.Rev. C 85, 054004 (2012)

A.H.Couture, T.B.Clegg, S.Tajima, C.R.Howell, B.Fallin, J.H.Esterline, A.S.Crowell, B.J.Crowe, D.M.Markoff, L.C.Cumberbatch, R.S.Pedroni, H.Witala

Cross-section measurements of 2H(n, np)n in symmetric star configurations

NUCLEAR REACTIONS 2H(n, np), E=16, 19 MeV; measured particle spectra, time-of-flight, np-coin, σ in space-star (SST) and coplanar star (CST) neutron-deuteron breakup configurations. Comparison with Monte Carlo simulations based on rigorous three-nucleon Faddeev calculations. Discussed discrepancies between data and theory; deficiencies in theoretical treatment of three-nucleon forces or in knowledge of the neutron-neutron 1S0 force.

doi: 10.1103/PhysRevC.85.054004
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14337.


2012HA12      Phys.Rev. C 85, 044302 (2012)

S.L.Hammond, A.S.Adekola, C.T.Angell, H.J.Karwowski, E.Kwan, G.Rusev, A.P.Tonchev, W.Tornow, C.R.Howell, J.H.Kelley

Dipole response of 238U to polarized photons below the neutron separation energy

NUCLEAR REACTIONS 238U(polarized γ, γ'), E=2.0-6.2 MeV; measured Eγ, Iγ, γ(θ), γ(linear pol), integrated cross sections using HIγS facility at TUNL. 238U; deduced levels, J, π, multipolarity, widths, branching ratios, B(M1), B(E1), total γ-ray interaction cross section for E1. Systematics of E1 and M1 strengths for 232Th, 236,238U. Comparison with QRPA calculations.

doi: 10.1103/PhysRevC.85.044302
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetL0170. Data from this article have been entered in the XUNDL database. For more information, click here.


2012ST15      Nucl.Phys. A895, 33 (2012)

S.L.Stephenson, B.E.Crawford, W.I.Furman, E.V.Lychagin, A.Yu.Muzichka, G.V.Nekhaev, E.I.Sharapov, V.N.Shvetsov, A.V.Strelkov, B.G.Levakov, A.E.Lyzhin, Yu.I.Chernukhin, C.R.Howell, G.E.Mitchell, W.Tornow, R.A.Showalter-Bucher

Experiment on direct nn scattering - The radiation-induced outgassing complication

NUCLEAR REACTIONS 1n(n, n), E=thermal[thermalized from YAGUAR pulsed reactor]; measured En, In using 3He thick and thin ionization detector and n4He ToF; analyzed feasibility to deduce σnn, neutron-neutron scattering length, neutron-neutron interaction, electron energy deposition in walls and radiation-induced desorption.

doi: 10.1016/j.nuclphysa.2012.09.005
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2011AD02      Phys.Rev. C 83, 034615 (2011)

A.S.Adekola, C.T.Angell, S.L.Hammond, A.Hill, C.R.Howell, H.J.Karwowski, J.H.Kelley, E.Kwan

Discovery of low-lying E1 and M1 strengths in 232Th

NUCLEAR REACTIONS 232Th(γ, γ'), E=2-4 MeV; measured Eγ, Iγ, γγ(θ), integrated σ using HIγS facility; deduced widths. 232Th; deduced levels, J, π, multipolarity, B(M1), B(E1), branching ratios. Comparison of scissors mode summed B(M1) strengths with those in 232Th, 235,236,238U, and with predictions of quasiparticle random-phase approximation (QRPA).

doi: 10.1103/PhysRevC.83.034615
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetL0159. Data from this article have been entered in the XUNDL database. For more information, click here.


2011KW01      Phys.Rev. C 83, 041601 (2011)

E.Kwan, G.Rusev, A.S.Adekola, F.Donau, S.L.Hammond, C.R.Howell, H.J.Karwowski, J.H.Kelley, R.S.Pedroni, R.Raut, A.P.Tonchev, W.Tornow

Discrete deexcitations in 235U below 3 MeV from nuclear resonance fluorescence

NUCLEAR REACTIONS 235U(γ, γ'), E=1.6-3.0 MeV; measured Eγ, Iγ, γγ-coin, integrated cross sections, and widths using HIγS facility. 235U; deduced levels, J, π, branching ratios. Comparison with quasiparticle random-phase approximation in deformed basis for dipole transitions.

doi: 10.1103/PhysRevC.83.041601
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2011MU10      Phys.Rev. C 83, 064605 (2011)

J.M.Mueller, R.J.Charity, R.Shane, L.G.Sobotka, S.J.Waldecker, W.H.Dickhoff, A.S.Crowell, J.H.Esterline, B.Fallin, C.R.Howell, C.Westerfeldt, M.Youngs, B.J.Crowe, III, R.S.Pedroni

Asymmetry dependence of nucleon correlations in spherical nuclei extracted from a dispersive-optical-model analysis

NUCLEAR REACTIONS 40,48Ca(n, n), E=11.9, 16.9 MeV; measured E(n), I(n), σ, σ(E, θ), time-of-flight spectra. 40Ca(n, n), E=9.9-85.0; 48Ca(n, n), E=7.97-16.9 MeV; 54Ca(n, n), E=5.5-26.0 MeV; 58,60Ni(n, n), E=4.5-24.0 MeV; 92Mo(n, n), E=7.0-30.4 MeV; 116,118Sn(n, n), E=9.95-24.0 MeV; 120Sn(n, n), E=9.94-16.91 MeV; 124Sn(n, n), E=11.0-24.0 MeV; 208Pb(n, n), E=4.0-185.0 MeV; 50Ti(p, p), E=6.0-65.0 MeV; 52Cr(p, p), E=10.77-39.9 MeV; 54Fe, 64Ni(p, p), E=9.69-65.0 MeV; 58Ni(p, p), E=7.0-192.0 MeV; 60Ni(p, p), E=7.0-178.0 MeV; 62Ni(p, p), E=8.02-156.0 MeV; 90Zr(p, p), E=5.57-185.0 MeV; 92Mo(p, p), E=12.5-49.45 MeV; 114Sn(p, p), E=30.4 MeV; 116Sn(p, p), E=16.0-61.4 MeV; 118,122,124Sn(p, p), E=16.0-49.35 MeV; 120Sn(p, p), E=9.8-156.0 MeV; 208Pb(p, p), E=9.0-200.0 MeV; analyzed total cross sections, σ(E, θ), single-particle levels, spectroscopic factors, occupation probabilities, mass dependence on cross section. Dispersal optical model (DOM) analysis.

doi: 10.1103/PhysRevC.83.064605
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2011RA08      Phys.Rev. C 83, 044621 (2011)

R.Raut, A.S.Crowell, B.Fallin, C.R.Howell, C.Huibregtse, J.H.Kelley, T.Kawano, E.Kwan, G.Rusev, A.P.Tonchev, W.Tornow, D.J.Vieira, J.B.Wilhelmy

Cross-section measurements of neutron-induced reactions on GaAs using monoenergetic beams from 7.5 to 15 MeV

NUCLEAR REACTIONS 69Ga(n, 2n)68Ga, 69Ga(n, p)69mZn, 71Ga(n, p)71mZn, 75As(n, 2n)74As, 75As(n, p)75Ge, E=7.5, 8.0, 8.5, 9.5, 10.2, 11.0, 11.5, 12.5, 13.25, 14.0, 14.5, 15.0 MeV; measured Eγ, Iγ; deduced half-lives and σ. 27Al(n, α)24Na, 197Au(n, 2n)196Au, E=7.5-14.5 MeV; measured σ and used as monitor reactions. Comparison of measured cross sections with previous data and statistical model calculations based on the Hauser-Feshbach formalism, using the TALYS and the COH3 codes.

doi: 10.1103/PhysRevC.83.044621
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2011TO10      Phys.Rev. C 84, 044331 (2011)

J.R.Tompkins, C.W.Arnold, H.J.Karwowski, G.C.Rich, L.G.Sobotka, C.R.Howell

Measurements of the 48Ca(γ, n) reaction

NUCLEAR REACTIONS 48Ca(polarized γ, n), E=9.5-15.3 MeV; measured E(n), I(n), Eγ, excitation functions, cross section; deduced B(M1) for 10.23 MeV resonance. High-intensity γ-ray source at TUNL. Comparison with previous studies, and with extended random-phase approximation calculations.

doi: 10.1103/PhysRevC.84.044331
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2010TO09      Phys.Rev. C 82, 054620 (2010)

A.P.Tonchev, S.L.Hammond, C.R.Howell, C.Huibregtse, A.Hutcheson, J.H.Kelley, E.Kwan, R.Raut, G.Rusev, W.Tornow, T.Kawano, D.J.Vieira, J.B.Wilhelmy

Measurement of the 241Am(γ, n)240Am reaction in the giant dipole resonance region

NUCLEAR REACTIONS 241Am(γ, n), E=9.0-15.6 MeV; measured Eγ, Iγ, σ using HIγS facility. Giant dipole resonance region. Comparison with previous measurements and statistical nuclear-model calculations.

doi: 10.1103/PhysRevC.82.054620
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2010WE01      Phys.Rev. C 81, 024003 (2010)

G.J.Weisel, W.Tornow, B.J.Crowe III, A.S.Crowell, J.H.Esterline, C.R.Howell, J.H.Kelley, R.A.Macri, R.S.Pedroni, R.L.Walter, H.Witala

Neutron-deuteron analyzing power data at 19.0 MeV

NUCLEAR REACTIONS 2H(polarized n, n), E(n)=19.0 MeV; measured analyzing powers; Monte Carlo simulation. Polarized neutrons produced in 2H(polarized d, n)3He reaction and neutron polarization measured in 4He(polarized n, n) reaction. Comparison with a three-body Faddeev calculation.

doi: 10.1103/PhysRevC.81.024003
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2010ZH34      Phys.Rev. C 82, 024601 (2010)

Z.Zhou, X.Ruan, Y.Du, B.Qi, H.Tang, H.Xia, R.L.Walter, R.T.Braun, C.R.Howell, W.Tornow, G.J.Weisel, M.Dupuis, J.P.Delaroche, Z.Chen, Z.Chen, Y.Chen

Differential cross section for neutron scattering from 209Bi at 37 MeV and the weak particle-core coupling

NUCLEAR REACTIONS 209Bi(n, n), (n, n')E=37 MeV, [neutrons produced in 3H(d, n)]; measured neutron spectra, cross sections, σ(θ), TOF method. Optical model analysis of σ(θ) data. Optical-model (OM) + DWBA calculations with weak particle-core coupling for computing (n, n) and (n, n') cross sections.

doi: 10.1103/PhysRevC.82.024601
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2009HU09      Phys.Rev. C 80, 014603 (2009)

A.Hutcheson, C.Angell, J.A.Becker, A.S.Crowell, D.Dashdorj, B.Fallin, N.Fotiades, C.R.Howell, H.J.Karwowski, T.Kawano, J.H.Kelley, E.Kwan, R.A.Macri, R.O.Nelson, R.S.Pedroni, A.P.Tonchev, W.Tornow

Cross sections for 238U(n, n'γ) and 238U(n, 2nγ) reactions at incident neutron energies between 5 and 14 MeV

NUCLEAR REACTIONS 238U(n, n'γ), (n, 2nγ), E=5-14 MeV; measured Eγ, yields, σ and excitation functions. Comparison with existing data and calculations using the GNASH and TALYS Hauser-Feshbach statistical-model codes.

doi: 10.1103/PhysRevC.80.014603
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2008BR01      Phys.Lett. B 660, 161 (2008)

R.T.Braun, W.Tornow, C.R.Howell, D.E.Gonzalez Trotter, C.D.Roper, F.Salinas, H.R.Setze, R.L.Walter, G.J.Weisel

Neutron-proton analyzing power at 12 MeV and inconsistencies in parametrizations of nucleon-nucleon data

NUCLEAR REACTIONS 1H(polarized n, n), E=12 MeV; measured analyzing power Ay(θ) and compared with various model predictions.

doi: 10.1016/j.physletb.2007.12.039
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14163.


2008CH14      Phys.Rev. C 77, 054002 (2008)

Q.Chen, C.R.Howell, T.S.Carman, W.R.Gibbs, B.F.Gibson, A.Hussein, M.R.Kiser, G.Mertens, C.F.Moore, C.Morris, A.Obst, E.Pasyuk, C.D.Roper, F.Salinas, H.R.Setze, I.Slaus, S.Sterbenz, W.Tornow, R.L.Walter, C.R.Whiteley, M.Whitton

Measurement of the neutron-neutron scattering length using the π-d capture reaction

NUCLEAR REACTIONS 2H(π-, nγ)n, E=20 MeV; measured neutron time-of-flight spectra, Eγ, Iγ, nγ-coin, neutron-neutron scattering length.

doi: 10.1103/PhysRevC.77.054002
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2008EL09      Phys.Rev. C 78, 064303 (2008); Erratum Phys.Rev. C 88, 029903 (2013)

E.Elhami, J.N.Orce, M.Scheck, S.Mukhopadhyay, S.N.Choudry, M.T.McEllistrem, S.W.Yates, C.Angell, M.Boswell, B.Fallin, C.R.Howell, A.Hutcheson, H.J.Karwowski, J.H.Kelley, Y.Parpottas, A.P.Tonchev, W.Tornow

Experimental study of the low-lying structure of 94Zr with the (n, n'γ) reaction

NUCLEAR REACTIONS 94Zr(n, n'γ), E=2.5-4.0 MeV; measured Eγ, Iγ, γγ-coin, angular distributions, half-lives by Doppler shift attenuation; deduced levels, J, π, multipolarities, mixing ratios, B(M1), B(E2).90,92,96,98,100,102Zr, 96Ru, 94,96Mo; systematics. Comparison with IBA and shell model calculations.

doi: 10.1103/PhysRevC.78.064303
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Data from this article have been entered in the XUNDL database. For more information, click here.


2008ST10      Phys.Rev. C 77, 054607 (2008)

S.Stave, M.W.Ahmed, A.J.Antolak, M.A.Blackston, A.S.Crowell, B.L.Doyle, S.S.Henshaw, C.R.Howell, P.Kingsberry, B.A.Perdue, P.Rossi, R.M.Prior, M.C.Spraker, H.R.Weller

Cross section measurements of the 10B(d, n0)11C reaction below 160 keV

NUCLEAR REACTIONS 10B(d, n)11C, E<160 keV; measured σ, astrophysical S factors, neutron spectra, angular distributions. Comparison with DWBA and Hauser-Feshbach calculations.

doi: 10.1103/PhysRevC.77.054607
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2008TO06      Phys.Rev. C 77, 054610 (2008)

A.P.Tonchev, C.T.Angell, M.Boswell, A.S.Crowell, B.Fallin, S.Hammond, C.R.Howell, A.Hutcheson, H.J.Karwowski, J.H.Kelley, R.S.Pedroni, W.Tornow, J.A.Becker, D.Dashdorj, J.Kenneally, R.A.Macri, M.A.Stoyer, C.Y.Wu, E.Bond, M.B.Chadwick, J.Fitzpatrick, T.Kawano, R.S.Rundberg, A.Slemmons, D.J.Vieira, J.B.Wilhelmy

Measurement of the 241Am(n, 2n) reaction cross section from 7.6 MeV to 14.5 MeV

NUCLEAR REACTIONS 241Am(n, 2n), E=7.6-14.5 MeV; measured Eγ, Iγ, neutron time-of-flight spectra, σ, excitation functions. Comparison with evaluated data in ENDF/B-VII and JENDL-3.3.

doi: 10.1103/PhysRevC.77.054610
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2007MU11      Nucl.Phys. A789, 30 (2007)

A.Yu.Muzichka, W.I.Furman, E.V.Lychagin, A.R.Krylov, G.V.Nekhaev, E.I.Sharapov, V.N.Shvetsov, A.V.Strelkov, B.G.Levakov, A.E.Lyzhin, Yu.I.Chernukhin, Ya.Z.Kandiev, C.R.Howell, G.E.Mitchell, B.E.Crawford, S.L.Stephenson, W.Tornow, and the DIANNA Collaboration

Background determination for the neutron-neutron scattering experiment at the reactor YAGUAR

doi: 10.1016/j.nuclphysa.2007.03.163
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2006GO11      Phys.Rev. C 73, 034001 (2006)

D.E.Gonzalez Trotter, F.Salinas Meneses, W.Tornow, C.R.Howell, Q.Chen, A.S.Crowell, C.D.Roper, R.L.Walter, D.Schmidt, H.Witala, W.Glockle, H.Tang, Z.Zhou, I.Slaus

Neutron-deuteron breakup experiment at En = 13 MeV: Determination of the 1S0 neutron-neutron scattering length ann

NUCLEAR REACTIONS 2H(n, 2n), E=13 MeV; measured En, nn-coin, σ(θ(1), θ(2)); deduced neutron-neutron scattering length, no significant three-nucleon force effects. Comparison with model predictions and previous measurements.

doi: 10.1103/PhysRevC.73.034001
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2006MA08      Nucl.Phys. A764, 261 (2006)

G.MacLachlan, A.Aghalaryan, A.Ahmidouch, B.D.Anderson, R.Asaturyan, O.Baker, A.R.Baldwin, D.Barkhuff, H.Breuer, R.Carlini, E.Christy, S.Churchwell, L.Cole, E.Crouse, S.Danagoulian, D.Day, T.Eden, M.Elaasar, R.Ent, M.Farkhondeh, H.Fenker, J.M.Finn, L.Gan, K.Garrow, P.Gueye, C.R.Howell, B.Hu, M.K.Jones, J.J.Kelly, C.Keppel, M.Khandaker, W.-Y.Kim, S.Kowalski, A.Lai, A.Lung, D.Mack, R.Madey, D.M.Manley, P.Markowitz, J.Mitchell, H.Mkrtchyan, A.K.Opper, B.Plaster, C.Perdrisat, V.Punjabi, B.Raue, T.Reichelt, J.Reinhold, J.Roche, Y.Sato, N.Savvinov, A.Yu.Semenov, I.A.Semenova, W.Seo, N.Simicevic, G.Smith, S.Taylor, S.Stepanyan, V.Tadevosyan, S.Tajima, L.Tang, W.Tireman, P.E.Ulmer, W.Vulcan, J.W.Watson, S.P.Wells, F.Wesselmann, S.Wood, C.Yan, C.Yan, S.Yang, L.Yuan, W.-M.Zhang, H.Zhu, X.Zhu

The ratio of proton electromagnetic form factors via recoil polarimetry at Q2=1.13 (GeV/c)2

NUCLEAR REACTIONS 1H(polarized e, e'p), E=2329 MeV; measured recoil proton spectra, polarization. 1H deduced ratio of electromagnetic form factors.

doi: 10.1016/j.nuclphysa.2005.09.012
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2006SA03      Phys.Rev. C 73, 015801 (2006)

A.Sabourov, M.W.Ahmed, M.A.Blackston, A.S.Crowell, C.R.Howell, B.A.Perdue, K.Sabourov, A.Tonchev, H.R.Weller, R.M.Prior, M.C.Spraker

Astrophysical S factor for the 7Li(d, n0)8Be and 7Li(d, n1)8Be reactions

NUCLEAR REACTIONS 7Li(d, n), E=45, 60, 80 keV; measured neutron spectra, σ(E); deduced integrated yields, astrophysical S-factor.

doi: 10.1103/PhysRevC.73.015801
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2006SA49      Phys.Rev.C 74, 064611 (2006)

A.Sabourov, M.W.Ahmed, M.A.Blackston, A.S.Crowell, C.R.Howell, K.Joshi, S.O.Nelson, B.A.Perdue, K.Sabourov, A.Tonchev, H.R.Weller, R.M.Prior, M.C.Spraker, B.Braizinha, N.Kalantar-Nayestanaki

The 7Li(d(pol), n0)8Be and 7Li(d(pol), n1)8Be reactions below 160 keV

NUCLEAR REACTIONS 7Li(polarized d, n), E=80, 130, 160 keV; measured σ(E, θ), analyzing powers; deduced transition matrix elements. Finite-range DWBA calculations, coupled reaction channels calculations.

doi: 10.1103/PhysRevC.74.064611
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2005CR08      Nucl.Instrum.Methods Phys.Res. B241, 190 (2005)

B.E.Crawford, W.I.Furman, C.R.Howell, E.V.Lychagin, B.G.Levakov, V.I.Litvin, A.E.Lyzhin, E.P.Magda, G.E.Mitchell, A.Yu.Muzichka, G.V.Nekhaev, E.I.Sharapov, V.N.Shvetsov, S.L.Stephenson, A.V.Strelkov, W.Tornow

Direct nn-scattering at the YAGUAR reactor

doi: 10.1016/j.nimb.2005.07.023
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2005MI17      J.Res.Natl.Inst.Stand.Technol. 110, 225 (2005)

G.E.Mitchell, W.I.Furman, E.V.Lychagin, A.Yu.Muzichka, G.V.Nekhaev, A.V.Strelkov, E.I.Sharapov, V.N.Shvetsov, Yu.I.Chernukhin, B.G.Levakov, V.I.Litvin, A.E.Lyzhin, E.P.Magda, B.E.Crawford, S.L.Stephenson, C.R.Howell, W.Tornow

Direct nn-Scattering Measurement With the Pulsed Reactor YAGUAR

doi: 10.6028/jres.110.029
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2005MI36      Braz.J.Phys. 35, 850 (2005)

G.E.Mitchell, W.I.Furman, E.V.Lychagin, A.Yu.Muzichka, G.V.Nekhaev, A.V.Strelkov, E.I.Sharapov, V.N.Shvetsov, B.G.Levakov, V.I.Litvin, A.E.Lyzhin, E.P.Magda, B.E.Crawford, S.L.Stephenson, C.R.Howell, W.Tornow

A Direct Measurement of the Neutron-Neutron Scattering Length

doi: 10.1590/S0103-97332005000500036
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2005RO29      Phys.Rev. C 72, 024605 (2005)

C.D.Roper, W.Tornow, R.T.Braun, Q.Chen, A.Crowell, D.Gonzalez Trotter, C.R.Howell, F.Salinas, R.Setze, R.L.Walter, Z.Chen, H.Tang, Z.Zhou

Measurements of Ay(θ) for 12C(n, n)12C from En = 2.2 to 8.5 MeV

NUCLEAR REACTIONS 12C(polarized n, n), E=2.2-8.5 MeV; measured Ay(θ). Comparison with previous data and model predictions.

doi: 10.1103/PhysRevC.72.024605
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2005SE05      Phys.Rev. C 71, 034006 (2005)

H.R.Setze, C.R.Howell, W.Tornow, R.T.Braun, D.E.Gonzalez Trotter, A.H.Hussein, R.S.Pedroni, C.D.Roper, F.Salinas, I.Slaus, B.Vlahovic, R.L.Walter, G.Mertens, J.M.Lambert, H.Witala, W.Glockle

Cross-section measurements of neutron-deuteron breakup at 13.0 MeV

NUCLEAR REACTIONS 2H(n, n), (n, 2n), E=13 MeV; measured En, nn-coin, σ(θ1, θ2) for seven exit-channel configurations. Comparison with model predictions.

doi: 10.1103/PhysRevC.71.034006
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset13988.


2004CH62      J.Phys.(London) G30, 1847 (2004)

Z.Chen, R.L.Walter, W.Tornow, G.J.Weisel, C.R.Howell

A dispersive optical model for n + 120Sn from -15 to +80 MeV and properties of neutron single-particle and single-hole states

NUCLEAR REACTIONS 120Sn(n, n), E=9.9-24 MeV; analyzed σ(θ), Ay(θ); Sn(n, X), E=5-80 MeV; analyzed total σ; deduced dispersive optical model parameters. 120Sn deduced neutron single-particle and single-hole states binding energies, spectroscopic factors.

doi: 10.1088/0954-3899/30/12/007
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2004CR02      J.Phys.(London) G30, 1269 (2004)

B.E.Crawford, S.L.Stephenson, C.R.Howell, G.E.Mitchell, W.Tornow, W.I.Furman, E.V.Lychagin, A.Yu.Muzichka, G.V.Nekhaev, A.V.Strelkov, E.I.Sharapov, V.N.Shvetsov

Calculations of neutron spectra after neutron-neutron scattering

NUCLEAR REACTIONS 1n, He, Ar(n, n'), E=reactor; calculated neutron spectra.

doi: 10.1088/0954-3899/30/9/024
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2003MA36      Eur.Phys.J. A 17, 323 (2003)

R.Madey, A.Yu.Semenov, S.Taylor, A.Aghalaryan, E.Crouse, G.MacLachlan, B.Plaster, S.Tajima, W.Tireman, C.Yan, A.Ahmidouch, B.D.Anderson, H.Arenhovel, R.Asaturyan, O.Baker, A.R.Baldwin, H.Breuer, R.Carlini, E.Christy, S.Churchwell, L.Cole, S.Danagoulian, D.Day, M.Elaasar, R.Ent, M.Farkhondeh, H.Fenker, J.M.Finn, L.Gan, K.Garrow, P.Gueye, C.Howell, B.Hu, M.K.Jones, J.J.Kelly, C.Keppel, M.Khandaker, W.-Y.Kim, S.Kowalski, A.Lung, D.Mack, D.M.Manley, P.Markowitz, J.Mitchell, H.Mkrtchyan, A.Opper, C.Perdrisat, V.Punjabi, B.Raue, T.Reichelt, J.Reinhold, J.Roche, Y.Sato, I.A.Semenova, W.Seo, N.Simicevic, G.Smith, S.Stepanyan, V.Tadevosyan, L.Tang, P.Ulmer, W.Vulcan, J.W.Watson, S.Wells, F.Wesselmann, S.Wood, C.Yan, S.Yang, L.Yuan, W.-M.Zhang, H.Zhu, X.Zhu

Neutron electric form factor up to Q2 = 1.47 (GeV/c)2

NUCLEAR REACTIONS 2H(polarized e, e'n), E=0.844-3.395 GeV; measured neutron spectra, polarization. 1n deduced form factors.

doi: 10.1140/epja/i2002-10169-6
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2003NA27      Phys.Rev. C 68, 044610 (2003)

M.M.Nagadi, C.R.Howell, W.Tornow, G.J.Weisel, M.A.Al-Ohali, R.T.Braun, H.R.Setze, Z.Chen, R.L.Walter, J.P.Delaroche, P.Romain

Dispersive optical-model and coupled-channels descriptions of neutron scattering from 27Al and 59Co up to 80 MeV

NUCLEAR REACTIONS 27Al, 59Co(polarized n, n), E=15 MeV; measured σ(θ), Ay(θ). 59Co(n, n), E=10-19 MeV; measured σ(θ). 2H(polarized d, n), E not given; measured neutron polarization. 27Al, 59Co(n, n), E=0.1-80 MeV; compiled, analyzed σ, σ(θ), Ay(θ); deduced optical model parameters. Dispersive optical model and coupled-channels model analysis.

doi: 10.1103/PhysRevC.68.044610
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset13903.


2003NE01      Phys.Lett. 552B, 29 (2003)

E.M.Neidel, W.Tornow, D.E.Gonzalez Trotter, C.R.Howell, A.S.Crowell, R.A.Macri, R.L.Walter, G.J.Weisel, J.Esterline, H.Witala, B.J.Crowe III, R.S.Pedroni, D.M.Markoff

A new twist to the long-standing three-nucleon analyzing power puzzle

NUCLEAR REACTIONS 2H(polarized n, n), E=1.2, 1.9 MeV; measured Ay(θ); deduced possible electromagnetic effect. Comparison with theory, proton scattering data.

doi: 10.1016/S0370-2693(02)03106-4
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset13863.


2003TO20      Phys.Lett. B 574, 8 (2003)

W.Tornow, N.G.Czakon, C.R.Howell, A.Hutcheson, J.H.Kelley, V.N.Litvinenko, S.F.Mikhailov, I.V.Pinayev, G.J.Weisel, H.Witala

Low-energy photodisintegration of the deuteron and Big-Bang Nucleosynthesis

NUCLEAR REACTIONS 2H(polarized γ, np), E=2.39-4.05 MeV; measured En, Ep, photon analyzing power; deduced M1 contribution to total σ. Implications for Big-Bang nucleosynthesis discussed.

doi: 10.1016/j.physletb.2003.08.078
Citations: PlumX Metrics


2003TO32      Mod.Phys.Lett. A 18, 258 (2003)

W.Tornow, E.M.Neidel, D.E.Gonzalez Trotter, C.R.Howell, A.S.Crowell, R.A.Macri, R.L.Walter, G.J.Weisel, J.Esterline, H.Witala, B.J.Crowe III, R.S.Pedroni, D.M.Markoff

Electromagnetic effects and the long-standing three-nucleon analyzing power puzzle

NUCLEAR REACTIONS 2H(polarized n, n), E=1.2, 1.9 MeV; measured Ay(θ); deduced electromagnetic effects.

doi: 10.1142/S0217732303010314
Citations: PlumX Metrics


2003TO33      Mod.Phys.Lett. A 18, 282 (2003)

W.Tornow, N.G.Czakon, C.R.Howell, A.Hutcheson, J.H.Kelley, V.N.Litvinenko, S.Mikhailov, I.V.Pinayev, G.J.Weisel, H.Witala

Analyzing power for the photodisintegration of the deuteron between Eγ = 2.4 and 4.0 MeV

NUCLEAR REACTIONS 2H(polarized γ, n), E=2.39-4.05 MeV; measured analyzing power. Comparison with model predictions.

doi: 10.1142/S021773230301034X
Citations: PlumX Metrics


2003WI06      Phys.Rev. C 67, 064002 (2003)

H.Witala, J.Golak, R.Skibinski, C.R.Howell, W.Tornow

Effects of the magnetic moment interaction between nucleons on observables in the 3N continuum

NUCLEAR REACTIONS 2H(n, n), (p, p), E=1.9, 10.0 MeV; calculated Ay(θ), iT11(θ), magnetic moment interaction effects. 2H(p, 2p), E=5, 13, 65 MeV; calculated σ(θ1, θ2), magnetic moment interaction effects. Comparisons with data.

doi: 10.1103/PhysRevC.67.064002
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2003XU02      Phys.Rev. C 67, 012201 (2003)

W.Xu, B.Anderson, L.Auberbach, T.Averett, W.Bertozzi, T.Black, J.Calarco, L.Cardman, G.D.Cates, Z.W.Chai, J.P.Chen, S.Choi, E.Chudakov, S.Churchwell, G.S.Corrado, C.Crawford, D.Dale, A.Deur, P.Djawotho, T.W.Donnelly, D.Dutta, J.M.Finn, H.Gao, R.Gilman, A.V.Glamazdin, C.Glashausser, W.Glockle, J.Golak, J.Gomez, V.G.Gorbenko, J.-O.Hansen, F.W.Hersman, D.W.Higinbotham, R.Holmes, C.R.Howell, E.Hughes, B.Humensky, S.Incerti, C.W.de Jager, J.S.Jensen, X.Jiang, C.E.Jones, M.Jones, R.Kahl, H.Kamada, A.Kievsky, I.Kominis, W.Korsch, K.Kramer, G.Kumbartzki, M.Kuss, E.Lakuriqi, M.Liang, N.Liyanage, J.LeRose, S.Malov, D.J.Margaziotis, J.W.Martin, K.McCormick, R.D.McKeown, K.McIlhany, Z.-E.Meziani, R.Michaels, G.W.Miller, J.Mitchell, S.Nanda, E.Pace, T.Pavlin, G.G.Petratos, R.I.Pomatsalyuk, D.Pripstein, D.Prout, R.D.Ransome, Y.Roblin, M.Rvachev, A.Saha, G.Salme, M.Schnee, T.Shin, K.Slifer, P.A.Souder, S.Strauch, R.Suleiman, M.Sutter, B.Tipton, L.Todor, M.Viviani, B.Vlahovic, J.Watson, C.F.Williamson, H.Witala, B.Wojtsekhowski, F.Xiong, J.Yeh, P.Zolnierczuk

Plane-wave impulse approximation extraction of the neutron magnetic form factor from quasielastic 3He(pol)(e(pol), e') at Q2 = 0.3 to 0.6 (GeV/c)2

NUCLEAR REACTIONS 3He(polarized e, e'), E=0.778, 1.727 GeV; measured transverse spin-dependent asymmetry. 1n deduced magnetic form factor. Polarized target.

doi: 10.1103/PhysRevC.67.012201
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2002FU16      J.Phys.(London) G28, 2627 (2002)

W.I.Furman, E.V.Lychagin, A.Yu.Muzichka, G.V.Nekhaev, Yu.V.Safronov, A. V.Strelkov, E.I.Sharapov, V.N.Shvetsov, B.G.Levakov, V.I.Litvin, A.E.Lyzhin, E.P.Magda, C.R.Howell, G.E.Mitchell, W.Tornow, B.E.Crawford, S.L.Stephenson, C.D.Bowman

Direct measurement of the neutron-neutron scattering cross section at the reactor YAGUAR

NUCLEAR REACTIONS 63Cu, 197Au(n, γ), E=thermal; measured activation yields; deduced neutron flux density. Application to proposed neutron-neutron scattering experiment discussed.

doi: 10.1088/0954-3899/28/10/308
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2001GO17      Nucl.Phys. A684, 701c (2001)

D.E.Gonzalez Trotter, W.Tornow, C.R.Howell, R.L.Walter

Neutron-Deuteron Analyzing Power at En = 2.0 MeV

NUCLEAR REACTIONS 2H(polarized n, n), E=2.0 MeV; measured Ay(θ). Comparisons with proton data, model predictions.

doi: 10.1016/S0375-9474(01)00466-3
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset13863.


2001HO25      Nucl.Phys. A689, 298c (2001)

C.R.Howell

Nucleon-Deuteron Breakup: Truths and implications

NUCLEAR REACTIONS 2H(p, np), E=8-65 MeV; analyzed σ, σ(θ).

doi: 10.1016/S0375-9474(01)00844-2
Citations: PlumX Metrics


2001XI04      Phys.Rev.Lett. 87, 242501 (2001)

F.Xiong, D.Dutta, W.Xu, B.Anderson, L.Auberbach, T.Averett, W.Bertozzi, T.Black, J.Calarco, L.Cardman, G.D.Cates, Z.W.Chai, J.P.Chen, S.Choi, E.Chudakov, S.Churchwell, G.S.Corrado, C.Crawford, D.Dale, A.Deur, P.Djawotho, B.W.Filippone, J.M.Finn, H.Gao, R.Gilman, A.V.Glamazdin, C.Glashausser, W.Glockle, J.Golak, J.Gomez, V.G.Gorbenko, J.-O.Hansen, F.W.Hersman, D.W.Higinbotham, R.Holmes, C.R.Howell, E.Hughes, B.Humensky, S.Incerti, C.W.de Jager, J.S.Jensen, X.Jiang, C.E.Jones, M.Jones, R.Kahl, H.Kamada, A.Kievsky, I.Kominis, W.Korsch, K.Kramer, G.Kumbartzki, M.Kuss, E.Lakuriqi, M.Liang, N.Liyanage, J.LeRose, S.Malov, D.J.Margaziotis, J.W.Martin, K.McCormick, R.D.McKeown, K.McIlhany, Z.-E.Meziani, R.Michaels, G.W.Miller, E.Pace, T.Pavlin, G.G.Petratos, R.I.Pomatsalyuk, D.Pripstein, D.Prout, R.D.Ransome, Y.Roblin, M.Rvachev, A.Saha, G.Salme, M.Schnee, T.Shin, K.Slifer, P.A.Souder, S.Strauch, R.Suleiman, M.Sutter, B.Tipton, L.Todor, M.Viviani, B.Vlahovic, J.Watson, C.F.Williamson, H.Witala, B.Wojtsekhowski, J.Yeh, P.Zolnierczuk

Precision Measurement of the Spin-Dependent Asymmetry in the Threshold Region of 3He(pol)(e(pol), e')

NUCLEAR REACTIONS 3He(polarized e, e'), E=0.778, 1.727 GeV; measured spin-dependent asymmetry. Polarized target, comparison with model predictions.

doi: 10.1103/PhysRevLett.87.242501
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2001ZH09      Nucl.Phys. A684, 545c (2001)

Z.Zhou, A.S.Crowell, J.Deng, W.Glockle, C.R.Howell, H.Kamada, B.Qi, R.A.Macri, X.Ruan, H.Tang, R.L.Walter, H.Witala

The Space-Star Anomaly in nd Breakup at 25 MeV

NUCLEAR REACTIONS 2H(n, np), E=25 MeV; measured nn-coin, σ(θ). Comparison with model predictions.

doi: 10.1016/S0375-9474(01)00389-X
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2000SC22      Phys.Rev. C61, 061604 (2000)

E.C.Schreiber, R.S.Canon, B.T.Crowley, C.R.Howell, J.H.Kelley, V.N.Litvinenko, S.O.Nelson, S.H.Park, I.V.Pinayev, R.M.Prior, K.Sabourov, M.Spraker, W.Tornow, Y.Wu, E.A.Wulf, H.R.Weller

First Measurement of the Near-Threshold 2H(γ(pol), n)p Analyzing Power using a Free-Electron Laser Based γ-Ray Source

NUCLEAR REACTIONS 2H(polarized γ, n), E=3.58 MeV; measured neutron spectrum, analyzing power; deduced E1, M1 contributions to cross section. Free-electron laser.

doi: 10.1103/PhysRevC.61.061604
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetM0646.


2000XU07      Phys.Rev.Lett. 85, 2900 (2000)

W.Xu, D.Dutta, F.Xiong, B.Anderson, L.Auberbach, T.Averett, W.Bertozzi, T.Black, J.Calarco, L.Cardman, G.D.Cates, Z.W.Chai, J.P.Chen, S.Choi, E.Chudakov, S.Churchwell, G.S.Corrado, C.Crawford, D.Dale, A.Deur, P.Djawotho, B.W.Filippone, J.M.Finn, H.Gao, R.Gilman, A.V.Glamazdin, C.Glashausser, W.Glockle, J.Golak, J.Gomez, V.G.Gorbenko, J.-O.Hansen, F.W.Hersman, D.W.Higinbotham, R.Holmes, C.R.Howell, E.Hughes, B.Humensky, S.Incerti, C.W.de Jager, J.S.Jensen, X.Jiang, C.E.Jones, M.Jones, R.Kahl, H.Kamada, A.Kievsky, I.Kominis, W.Korsch, K.Kramer, G.Kumbartzki, M.Kuss, E.Lakuriqi, M.Liang, N.Liyanage, J.LeRose, S.Malov, D.J.Margaziotis, J.W.Martin, K.McCormick, R.D.McKeown, K.McIlhany, Z.-E.Meziani, R.Michaels, G.W.Miller, E.Pace, T.Pavlin, G.G.Petratos, R.I.Pomatsalyuk, D.Pripstein, D.Prout, R.D.Ransome, Y.Roblin, M.Rvachev, A.Saha, G.Salme, M.Schnee, T.Shin, K.Slifer, P.A.Souder, S.Strauch, R.Suleiman, M.Sutter, B.Tipton, L.Todor, M.Viviani, B.Vlahovic, J.Watson, C.F.Williamson, H.Witala, B.Wojtsekhowski, J.Yeh, P.Zolnierczuk

Transverse Asymmetry AT' from the Quasielastic 3He(pol)(e(pol), e') Process and the Neutron Magnetic Form Factor

NUCLEAR REACTIONS 3He(polarized e, e'), E=0.778, 1.727 GeV; measured transverse asymmetry. 1n deduced magnetic form factor. Polarized target.

doi: 10.1103/PhysRevLett.85.2900
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1999GO22      Phys.Rev.Lett. 83, 3788 (1999)

D.E.Gonzalez Trotter, F.Salinas, Q.Chen, A.S.Crowell, W.Glockle, C.R.Howell, C.D.Roper, D.Schmidt, I.Slaus, H.Tang, W.Tornow, R.L.Walter, H.Witala, Z.Zhou

New Measurement of the 1S0 Neutron-Neutron Scattering Length using the Neutron-Proton Scattering Length as a Standard

NUCLEAR REACTIONS 2H(n, np), E ≈ 13 MeV; measured neutron spectra, proton spectra, σ(θ(n), θ(p)); deduced nn and np scattering lengths.

doi: 10.1103/PhysRevLett.83.3788
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1998HO08      Nucl.Phys. A631, 692c (1998)

C.R.Howell, H.R.Setze, W.Tornow, R.T.Braun, W.Glockle, A.H.Hussein, J.M.Lambert, G.Mertens, C.D.Roper, F.Salinas, I.Slaus, D.E.Gonzalez Trotter, B.Vlahovic, R.L.Walter, H.Witala

Implications of the Space-Star Anomaly in nd Breakup

NUCLEAR REACTIONS 2H(n, np), E=13.0 MeV; measured σ(φ(12), θ(n1), θ(n2)); deduced space-star configuration anomaly.

doi: 10.1016/S0375-9474(98)00093-1
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1998HO24      Phys.Lett. 444B, 252 (1998)

C.R.Howell, Q.Chen, T.S.Carman, A.Hussein, W.R.Gibbs, B.F.Gibson, G.Mertens, C.F.Moore, C.Morris, A.Obst, E.Pasyuk, C.D.Roper, F.Salinas, I.Slaus, S.Sterbenz, W.Tornow, R.L.Walter, C.R.Whitley, M.Whitton

Toward a Resolution of the Neutron-Neutron Scattering-Length Issue

NUCLEAR REACTIONS 2H(π-, nγ), E not given; measured En, nγ(θ); deduced neutron-neutron scattering length. TOF.

doi: 10.1016/S0370-2693(98)01386-0
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1998TO06      Nucl.Phys. A631, 421c (1998)

W.Tornow, T.S.Carman, Q.Chen, W.R.Gibbs, B.F.Gibson, D.E.Gonzalez Trotter, C.R.Howell, A.H.Hussein, G.Mertens, C.F.Moore, C.Morris, A.Obst, E.Pasyuk, C.D.Roper, F.Salinas, D.Schmidt, H.R.Setze, I.Slaus, S.Sterbenz, H.Tang, R.L.Walter, C.R.Whitley, H.Witala, Z.Zhou

Scattering Length Measurements from Radiative Pion Capture and Neutron-Deuteron Breakup

NUCLEAR REACTIONS 2H(π-, 2n), E not given; 2H(n, np), E=13 MeV; measured nn, np scattering lengths; deduced no three-nucleon force effects.

doi: 10.1016/S0375-9474(98)00040-2
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1997AL27      Nucl.Instrum.Methods Phys.Res. A396, 388 (1997)

M.A.Al-Ohali, A.Aksoy, A.Coban, J.M.Hanly, P.D.Felsher, C.R.Howell, W.Tornow, F.Salinas, R.L.Walter

Determination of the Neutron Detection Efficiency of an NE213 Scintillator for E(n) = 2.5 to 1.6 MeV using the 2H(d, n)3He Reaction

doi: 10.1016/S0168-9002(97)00701-8
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1997FE06      Phys.Rev. C56, 38 (1997)

P.D.Felsher, C.R.Howell, W.Tornow, M.L.Roberts, J.M.Hanly, G.J.Weisel, M.Al Ohali, R.L.Walter, I.Slaus, J.M.Lambert, P.A.Treado, G.Mertens, A.C.Fonseca, A.Soldi, B.Vlahovic

Analyzing Power Measurements for the d(pol) + d → d + p + n Breakup Reaction at 12 MeV

NUCLEAR REACTIONS 2H(polarized d, nd), E=12 MeV; measured d, p, n spectra, σ(θ1, θ2) vs arc length, vector, tensor analyzing powers vs (θ1, θ2, arc length); deduced contributions from nucleon-nucleon P interactions. Impulse approximation calculations.

doi: 10.1103/PhysRevC.56.38
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1996SE14      Phys.Lett. 388B, 229 (1996)

H.R.Setze, C.R.Howell, W.Tornow, R.T.Braun, W.Glockle, A.H.Hussein, J.M.Lambert, G.Mertens, C.D.Roper, F.Salinas, I.Slaus, D.E.Gonzalez Trotter, B.Vlahovic, R.L.Walter, H.Witala

Verification of the Space-Star Anomaly in nd Breakup

NUCLEAR REACTIONS 2H(n, np), E=1-15 MeV; measured σ(θ1, θ2) vs arc length, total energy spectra, space-star, coplanar-star configurations; deduced space-star configuration related anomaly evidence.

doi: 10.1016/S0370-2693(96)01069-6
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1996WE10      Phys.Rev. C54, 2410 (1996)

G.J.Weisel, W.Tornow, C.R.Howell, P.D.Felsher, M.AlOhali, M.L.Roberts, R.K.Das, R.L.Walter, G.Mertens

Analyzing Power Measurements for 209Bi(n, n) at 6 and 9 MeV and Consistent Dispersive Optical-Model Analyses for n + 209Bi and n + 208Pb from -20 to +80 MeV

NUCLEAR REACTIONS 209Bi(polarized n, n), E=6, 9 MeV; measured neutron spectra, σ(θ), analyzing power vs θ. 209Bi(polarized n, n), E=1-80 MeV; 208Pb(polarized n, n), E=0.1-40 MeV; analyzed σ, σ(θ), analyzing power vs θ data; deduced model parameters. 209Pb deduced two-particle, two-hole states binding energies, occupation probabilities, spectroscopic factors, rms radii. Consistent dispersive optical model.

doi: 10.1103/PhysRevC.54.2410
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset13680.


1995HO24      Nucl.Instrum.Methods Phys.Res. B99, 316 (1995)

C.R.Howell, H.R.Setze, R.T.Braun, D.E.Gonzalez Trotter, A.H.Hussein, C.D.Roper, F.Salinas, I.Slaus, W.Tornow, B.Vlahovic, R.L.Walter, G.Mertens, J.M.Lambert, H.Witala

Probing the Three-Nucleon Force using Nucleon-Deuteron Breakup Reactions

NUCLEAR REACTIONS 2H(n, X), E=13 MeV; measured σ(θ1, θ2) vs arc length in space-star, coplanar-star configurations following target breakup; deduced implications related to 3N-forces.

doi: 10.1016/0168-583X(94)00680-6
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1994AK08      Nucl.Instrum.Methods Phys.Res. A337, 486 (1994)

A.Aksoy, A.Coban, A.A.Naqvi, F.Z.Khiari, J.M.Hanly, C.R.Howell, W.Tornow, P.D.Felsher, M.A.Al-Ohali, R.L.Walter

Response-Function Measurement of an NE213 Scintillator using the 2H(d, n)3He Reaction

doi: 10.1016/0168-9002(94)91118-5
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1994HO34      Few-Body Systems 16, 127 (1994)

C.R.Howell, W.Tornow, H.R.Setze, R.T.Braun, D.E.Gonzalez Trotter, C.D.Roper, R.S.Pedroni, S.M.Grimes, C.E.Brient, N.Al-Niemi, F.C.Goeckner, G.Mertens

Resolution of Discrepancy between Backward Angle Cross-Section Data for Neutron-Deuteron Elastic Scattering

NUCLEAR REACTIONS 2H(n, n), E=8-14 MeV; measured σ(θ). Mixed CD2-CH2 foil, recoil d, p measured. Model comparison.

doi: 10.1007/BF01355285
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1993CH23      J.Phys.(London) G19, 877 (1993)

Z.M.Chen, K.Baird, C.R.Howell, M.L.Roberts, W.Tornow, R.L.Walter

Neutron Scattering from 12C between 15.6 and 17.3 MeV

NUCLEAR REACTIONS 12C(n, n), (n, n'), E=15.57-17.29 MeV; measured σ(θ); deduced potential parameters. Optical-model, coupled-channels approach. Other data anlayzed.

doi: 10.1088/0954-3899/19/6/008
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset13683.


1993HO24      Phys.Rev. C48, 2855 (1993)

C.R.Howell, P.D.Felsher, W.Tornow, M.L.Roberts, J.M.Hanly, G.J.Weisel, M.Al Ohali, R.L.Walter, I.Slaus, J.M.Lambert, P.A.Treado, G.Mertens

Novel Probe of Charge Symmetry Breaking: Deuteron-Induced Deuteron Breakup

NUCLEAR REACTIONS 2H(polarized d, pd), (polarized d, nd), (polarized d, np), E=12 MeV; measured vector, tensor analyzing power vs θ; deduced breakup reaction suitability as charge symmetry breaking probe.

doi: 10.1103/PhysRevC.48.2855
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC0892.


1993PA18      Phys.Rev. C48, 711 (1993)

B.K.Park, J.Rapaport, G.Fink, J.L.Ullmann, A.G.Ling, D.S.Sorenson, F.P.Brady, J.L.Romero, C.R.Howell, W.Tornow, W.Unkelbach

Energy Dependence of Multipole Strength Distributions in the 32S(n, p)32P Reaction

NUCLEAR REACTIONS 32S(n, p), E=60-220 MeV; measured σ(θ, Ep), σ(θ); deduced Gamow-Teller transition strengths. Shell model, RPA comparison.

doi: 10.1103/PhysRevC.48.711
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset13530.


1993WA25      Nucl.Instrum.Methods Phys.Res. B79, 282 (1993)

R.L.Walter, G.J.Weisel, R.K.Das, W.Tornow, C.R.Howell

The Dispersive Optical Model for n + 208Pb and n + 209Bi

NUCLEAR REACTIONS 209Bi(polarized n, n), E=9-26 MeV; analyzed σ(θ), analyzing power vs θ. 208Pb(n, n), E ≤ 80 MeV; analyzed σ(E). Dispersive optical model.

doi: 10.1016/0168-583X(93)95344-5
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1993YA11      Phys.Rev. C48, 1158 (1993)

X.Yang, L.Wang, J.Rapaport, C.D.Goodman, C.Foster, Y.Wang, W.Unkelbach, E.Sugarbaker, D.Marchlenski, S.de Lucia, B.Luther, J.L.Ullmann, A.G.Ling, B.K.Park, D.S.Sorenson, L.Rybarcyk, T.N.Taddeucci, C.R.Howell, W.Tornow

Dipole and Spin-Dipole Resonances in Charge-Exchange Reactions on 12C

NUCLEAR REACTIONS 12C(n, p), E=60-260 MeV; measured σ(θ, Ep); 12C(p, n), E=186 MeV; 12C(polarized p, n), E=160 MeV; measured σ(θ, En), polarization, spin observables, analyzing power; deduced dipole, spin-dipole resonances.

doi: 10.1103/PhysRevC.48.1158
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14204.


1992PA06      Phys.Rev. C45, 1791 (1992)

B.K.Park, J.Rapaport, J.L.Ullmann, A.G.Ling, D.S.Sorenson, F.P.Brady, J.L.Romero, C.R.Howell, W.Tornow, T.C.Ronnqvist

Gamow-Teller and Dipole Strength Distribution in 40Ca(n, p)40K Reaction

NUCLEAR REACTIONS 40Ca(n, p), E=60-260 MeV; measured σ(E, θ). 40K deduced Gamow-Teller strength, dipole, spin-dipole transition strength. DWIA analysis, compared with 1p-1h shell model predictions.

doi: 10.1103/PhysRevC.45.1791
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1992SO02      Phys.Rev. C45, R500 (1992)

D.S.Sorenson, X.Aslanoglou, F.P.Brady, J.R.Drummond, R.C.Haight, C.R.Howell, N.S.P.King, A.Ling, P.W.Lisowski, B.K.Park, J.Rapaport, J.L.Romero, W.Tornow, J.L.Ullmann

Energy Dependence of the Gamow-Teller Strength in p-Shell Nuclei Observed in the (n, p) Reaction

NUCLEAR REACTIONS 6Li, 13,12C(n, p), E=60-260 MeV; measured σ(θ, E); deduced unit σ, effective interaction volume integrals.

doi: 10.1103/PhysRevC.45.R500
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1992TO01      Phys.Rev. C45, 459 (1992)

W.Tornow, C.R.Howell, R.L.Walter, I.Slaus

Coulomb Effects in Three-Nucleon Scattering Versus Charge-Symmetry Breaking in the 3P Nucleon-Nucleon Interactions

NUCLEAR REACTIONS 2H(polarized p, p), (polarized n, n), E=5-8.5 MeV; analyzed analyzing power data; deduced Coulomb, charge symmetry breaking effects relative importance.

doi: 10.1103/PhysRevC.45.459
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1992WE10      Phys.Rev. C46, 1599 (1992)

G.J.Weisel, W.Tornow, C.R.Howell, P.D.Felsher, M.Al Ohali, Z.P.Chen, R.L.Walter, J.M.Lambert, P.A.Treado, I.Slaus

Neutron-Proton Analyzing Power Data between 7.6 and 18.5 MeV

NUCLEAR REACTIONS 1H(polarized n, n), E=7.6-18.5 MeV; measured analyzing power vs θ. Comparison with theory.

doi: 10.1103/PhysRevC.46.1599
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1991HO26      Nucl.Instrum.Methods Phys.Res. B56/57, 459 (1991)

C.R.Howell, W.Tornow, H.G.Pfutzner, M.L.Roberts, K.Murphy, P.D.Felsher, G.J.Weisel, G.Mertens, R.L.Walter, J.M.Lambert, P.A.Treado, I.Slaus

Neutron-Deuteron Elastic Scattering and Breakup Reactions Below 20 MeV

NUCLEAR REACTIONS 2H(polarized n, n), E=12 MeV; 2H(n, X), E=13 MeV; compiled, reviewed analyzing power vs θ, σ(θ1, θ2) vs arc length data for breakup.

doi: 10.1016/0168-583X(91)96070-2
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1991LI36      Phys.Rev. C44, 2794 (1991)

A.Ling, X.Aslanoglou, F.P.Brady, R.W.Finlay, R.C.Haight, C.R.Howell, N.S.P.King, P.W.Lisowski, B.K.Park, J.Rapaport, J.L.Romero, D.S.Sorenson, W.Tornow, J.L.Ullmann

Ground-State Gamow-Teller Strength in 64Ni(n, p)64Co Cross Sections at 90-240 MeV

NUCLEAR REACTIONS 64Ni(n, p), E=90-240 MeV; measured σ(E, θ); deduced unit σ. DWIA analysis.

doi: 10.1103/PhysRevC.44.2794
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1991PE02      Phys.Rev. C43, 2336 (1991)

R.S.Pedroni, R.C.Byrd, G.M.Honore, C.R.Howell, R.L.Walter

Scattering of Polarized and Unpolarized Neutrons from 93Nb from 8 to 17 MeV and Optical Model Descriptions

NUCLEAR REACTIONS 93Nb(polarized n, n), (n, n), E=8-17 MeV; measured σ(E, θ), analyzing power vs E, θ; deduced optical model parameters. Pulsed beam, tof.

doi: 10.1103/PhysRevC.43.2336
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1991RO05      Phys.Rev. C44, 2006 (1991)

M.L.Roberts, P.D.Felsher, G.J.Weisel, Z.Chen, C.R.Howell, W.Tornow, R.L.Walter, D.J.Horen

Measurement of A(y)(θ) for n + 208Pb from 6 to 10 MeV and the Neutron-Nucleus Interaction Over the Energy Range from Bound States at - 17 MeV Up to Scattering at 40 MeV

NUCLEAR REACTIONS 208Pb(polarized n, n), (polarized n, n'), E=6-10 MeV; measured analyzing power vs E, θ, σ(θ); deduced optical model parameters. Hartree-Fock potential, dispersive terms of nuclear mean field, single-particle, single-hole energies.

doi: 10.1103/PhysRevC.44.2006
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1991TO05      Phys.Lett. 257B, 273 (1991)

W.Tornow, C.R.Howell, M.Alohali, Z.P.Chen, P.D.Felsher, J.M.Hanly, R.L.Walter, G.Weisel, G.Mertens, I.Slaus, H.Witala, W.Glockle

The Low-Energy Neutron-Deuteron Analyzing Power and the 3P0,3P1, 3P2 Interactions of Nucleon-Nucleon Potentials

NUCLEAR REACTIONS 2H(polarized n, n), E=5-8.5 MeV; measured analyzing power vs θ; deduced nucleon-nucleon interaction features.

doi: 10.1016/0370-2693(91)91892-Y
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1990HO14      Nucl.Instrum.Methods Phys.Res. A290, 424 (1990)

C.R.Howell, W.Tornow, H.G.Pfutzner, A.Li, M.L.Roberts, K.Murphy, P.D.Felsher, G.J.Weisel, A.Naqvi, R.L.Walter, J.M.Lambert, P.A.Treado, I.Slaus

Techniques for Vector Analyzing Power Measurements of the 2H(n(pol), np)n Breakup Reaction at Low Energies

NUCLEAR REACTIONS 2H(polarized n, np), E=12 MeV; measured σ(En), vector analyzing power. High accuracy, breakup reaction.

doi: 10.1016/0168-9002(90)90560-S
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1990PE05      Phys.Rev. C41, 2929 (1990)

R.S.Pedroni, C.R.Howell, R.L.Walter

Analyzing Power Measurements for Elastic Scattering of 17 MeV Neutrons from 120Sn

NUCLEAR REACTIONS 120Sn(polarized n, n), E=17 MeV; measured A(y)(θ). Enriched target. Coupled-channels calculations, optical model predictions test.

doi: 10.1103/PhysRevC.41.2929
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1990WE13      J.Phys.(Paris), Colloq.C-6, 515 (1990)

G.J.Weisel, W.Tornow, C.R.Howell, P.D.Felsher, M.Alohali, Z.P.Chen, R.L.Walter, J.M.Lambert, P.A.Treado

Neutron-Proton Analyzing Power Data at 7.6, 12.0, 14.1, 16.0, 18.5 MeV

NUCLEAR REACTIONS 1H(polarized n, n), E=7.6-18.5 MeV; measured analyzing power vs θ, spin correlation coefficient.


1989GU02      Phys.Rev. C39, 405 (1989)

P.P.Guss, R.C.Byrd, C.R.Howell, R.S.Pedroni, G.Tungate, R.L.Walter, J.P.Delaroche

Optical Model Description of the Neutron Interaction with 116Sn and 120Sn Over a Wide Energy Range

NUCLEAR REACTIONS 120Sn(polarized n, n), (polarized n, n'), E=10-17 MeV; 116Sn(polarized n, n), (polarized n, n'), E=10, 14 MeV; measured σ(θ), analyzing power vs θ; deduced model parameters. 120,116Sn levels deduced neutron, proton multipole deformation parameters.

doi: 10.1103/PhysRevC.39.405
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1989LI26      Chin.J.Nucl.Phys. 11, No.3, 1 (1989)

A.Li, H.G.Pfutzner, C.R.Howell, R.L.Walter

Measurements of Analyzing Power Ay(θ) for Neutron Elastic Scattering from 14N and 16O

NUCLEAR REACTIONS 16O, 14N(polarized n, n), E=5-17 MeV; measured σ(θ), analyzing power vs θ; deduced model parameters. Other data analysis, optical model.


1989TO06      Nucl.Instrum.Methods Phys.Res. B40/41, 470 (1989)

W.Tornow, C.R.Howell, R.L.Walter

Few-Body Physics Investigated through Polarized Neutron Experiments in A ≤ 3 Systems at TUNL

NUCLEAR REACTIONS 1H(polarized n, n), E=16.9 MeV; 2H(polarized n, n), E=10, 14.1 MeV; analyzed analyzing power data; deduced nucleon-nucleon interaction dependence.

doi: 10.1016/0168-583X(89)91023-9
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1988HO12      Phys.Rev. C38, 1552 (1988)

C.R.Howell, R.S.Pedroni, G.M.Honore, K.Murphy, R.C.Byrd, G.Tungate, R.L.Walter

Scattering of Polarized and Unpolarized Nucleons from 28Si

NUCLEAR REACTIONS 28Si(polarized n, n), (polarized n, n'), (n, n), (n, n'), E=8-17 MeV; measured σ(En), analyzing power vs θ, σ(θ); deduced model parameters. 28Si levels deduced multipole moments, B(λ). Analyzed other data.

doi: 10.1103/PhysRevC.38.1552
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1988HO14      Phys.Rev.Lett. 61, 1565 (1988)

C.R.Howell, W.Tornow, I.Slaus, P.D.Felsher, M.L.Roberts, H.G.Pfutzner, Anli Li, K.Murphy, R.L.Walter, J.M.Lambert, P.A.Treado, H.Witala, W.Glockle, T.Cornelius

Rigorous Calculations and Measurements of A(y)(θ) for n + d Elastic-Scattering and Breakup Processes

NUCLEAR REACTIONS 2H(polarized n, np), E=12 MeV; measured vector analyzing power vs θ. Three-nucleon calculations.

doi: 10.1103/PhysRevLett.61.1565
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1988PE20      Phys.Rev. C38, 2052 (1988)

R.S.Pedroni, C.R.Howell, G.M.Honore, H.G.Pfutzner, R.C.Byrd, R.L.Walter, J.P.Delaroche

Energy Dependence of the Deformed Optical Potential for Neutron Scattering from 54,56Fe and 58,60Ni up to 80 MeV

NUCLEAR REACTIONS 54Fe, 58Ni(polarized n, n), (polarized n, n'), E=10, 14, 17 MeV; 56Fe, 60Ni(polarized n, n), (polarized n, n'), E=10 MeV; measured analyzing power vs θ. 54Fe, 58Ni(n, n), (n, n'), E=17 MeV; measured σ(θ); deduced deformation parameters for central, real spin-orbit potentials. Coupled channels calculations.

doi: 10.1103/PhysRevC.38.2052
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