NSR Query Results
Output year order : Descending NSR database version of April 27, 2024. Search: Author = K.P.Hickerson Found 11 matches. 2022CU09 Phys.Rev. C 106, 065506 (2022) C.Cude-Woods, F.M.Gonzalez, E.M.Fries, T.Bailey, M.Blatnik, N.B.Callahan, J.H.Choi, S.M.Clayton, S.A.Currie, M.Dawid, B.W.Filippone, W.Fox, P.Geltenbort, E.George, L.Hayen, K.P.Hickerson, M.A.Hoffbauer, K.Hoffman, A.T.Holley, T.M.Ito, A.Komives, C.-Y.Liu, M.Makela, C.L.Morris, R.Musedinovic, C.O'Shaughnessy, R.W.Pattie, J.Ramsey, D.J.Salvat, A.Saunders, E.I.Sharapov, S.Slutsky, V.Su, X.Sun, C.Swank, Z.Tang, W.Uhrich, J.Vanderwerp, P.Walstrom, Z.Wang, W.Wei, A.R.Young Fill and dump measurement of the neutron lifetime using an asymmetric magneto-gravitational trap RADIOACTIVITY 1NN(β-); measured number of trapped neutrons; deduced free neutron lifetime T1/2. Comparison to previous most precise experimental data. Asymmetric magneto-gravitational trap at Los Alamos Ultracold Neutron Facility.
doi: 10.1103/PhysRevC.106.065506
2019CA17 Phys.Rev. C 100, 015501 (2019) N.Callahan, C.-Y.Liu, F.Gonzalez, E.Adamek, J.D.Bowman, L.Broussard, S.M.Clayton, S.Currie, C.Cude-Woods, E.B.Dees, X.Ding, W.Fox, P.Geltenbort, K.P.Hickerson, M.A.Hoffbauer, A.T.Holley, A.Komives, S.W.T.MacDonald, M.Makela, C.L.Morris, J.D.Ortiz, R.W.Pattie, J.Ramsey, D.J.Salvat, A.Saunders, E.I.Sharapov, S.K.L.Sjue, Z.Tang, J.Vanderwerp, B.Vogelaar, P.L.Walstrom, Z.Wang, H.Weaver, W.Wei, J.Wexler, A.R.Young Monte Carlo simulations of trapped ultracold neutrons in the UCNt experiment RADIOACTIVITY 1n(β-); calculated neutron dynamics, trajectory and neutron detection rate in Ultra-cold neutron (UCN) magneto-gravitational neutron trap by developing an in-depth Monte Carlo model for the UCNτ experiments. Discussed implications of chaotic dynamics on controlling the systematic effects, such as spectral cleaning and microphonic heating, for a successful UCN lifetime experiment to reach 0.01% level of precision.
doi: 10.1103/PhysRevC.100.015501
2018PA53 Science 360, 627 (2018) R.W.Pattie, N.B.Callahan, C.Cude-Woods, E.R.Adamek, L.J.Broussard, S.M.Clayton, S.A.Currie, E.B.Dees, X.Ding, E.M.Engel, D.E.Fellers, W.Fox, P.Geltenbort, K.P.Hickerson, M.A.Hoffbauer, A.T.Holley, A.Komives, C.-Y.Liu, S.W.T.MacDonald, M.Makela, C.L.Morris, J.D.Ortiz, J.Ramsey, D.J.Salvat, A.Saunders, S.J.Seestrom, E.I.Sharapov, S.K.Sjue, Z.Tang, J.Vanderwerp, B.Vogelaar, P.L.Walstrom, Z.Wang, W.Wei, H.L.Weaver, J.W.Wexler, T.L.Womack, A.R.Young, B.A.Zeck Measurement of the neutron lifetime using a magneto-gravitational trap and in situ detection RADIOACTIVITY 1NN(β-); measured T1/2 of free neutron using ultracold neutrons stored in a magneto-gravitational trap at the Los Alamos Neutron Science Center UCN facility. Comparison with previous measurements.
doi: 10.1126/science.aan8895
2018TA18 Phys.Rev.Lett. 121, 022505 (2018) Z.Tang, M.Blatnik, L.J.Broussard, J.H.Choi, S.M.Clayton, C.Cude-Woods, S.Currie, D.E.Fellers, E.M.Fries, P.Geltenbort, F.Gonzalez, K.P.Hickerson, T.M.Ito, C.-Y.Liu, S.W.T.MacDonald, M.Makela, C.L.Morris, C.M.O'Shaughnessy, R.W.Pattie, B.Plaster, D.J.Salvat, A.Saunders, Z.Wang, A.R.Young, B.A.Zeck Search for the Neutron Decay n → X + γ, Where X is a Dark Matter Particle RADIOACTIVITY 1NN(γ); measured decay products, Eγ, Iγ; deduced lack of the possibility of a sufficiently strong branch to explain the lifetime discrepancy with 97% confidence.
doi: 10.1103/PhysRevLett.121.022505
2017HI08 Phys.Rev. C 96, 042501 (2017) K.P.Hickerson, for the UCNA Collaboration First direct constraints on Fierz interference in free-neutron β decay RADIOACTIVITY 1n(β-); measured β spectrum using polarized ultracold neutrons (UCNs) using UCNA spectrometer at Los Alamos Neutron Science Center; deduced β-decay asymmetry, neutron Fierz interference term bn. Monte Carlo simulations. Comparison with predicted standard-model spectrum.
doi: 10.1103/PhysRevC.96.042501
2017SE02 Phys.Rev. C 95, 015501 (2017) S.J.Seestrom, E.R.Adamek, D.Barlow, M.Blatnik, L.J.Broussard, N.B.Callahan, S.M.Clayton, C.Cude-Woods, S.Currie, E.B.Dees, W.Fox, M.Hoffbauer, K.P.Hickerson, A.T.Holley, C.-Y.Liu, M.Makela, J.Medina, D.J.Morley, C.L.Morris, R.W.Pattie, J.Ramsey, A.Roberts, D.J.Salvat, A.Saunders, E.I.Sharapov, S.K.L.Sjue, B.A.Slaughter, P.L.Walstrom, Z.Wang, J.Wexler, T.L.Womack, A.R.Young, J.Vanderwerp, B.A.Zeck Total cross sections for ultracold neutrons scattered from gases NUCLEAR REACTIONS 1H, 3He(n, n'), E=ultracold neutrons; measured scattered neutrons, transmission ratio as a function of pressure, total cross sections, total cross section as a function of the number of hydrogen atoms using the following gas targets: hydrogen, ethane, methane, isobutene, n-butane, ethylene, water vapor, propane, neopentane, isopropyl alcohol, and 3He; deduced cross section per hydrogen atom as a function of molecular mass. Relevance to ongoing experiments pn neutron half-life measurements using ultracold neutrons (UCN) at LANL facility.
doi: 10.1103/PhysRevC.95.015501
2015SE18 Phys.Rev. C 92, 065501 (2015) S.J.Seestrom, E.R.Adamek, D.Barlow, L.J.Broussard, N.B.Callahan, S.M.Clayton, C.Cude-Woods, S.Currie, E.B.Dees, W.Fox, P.Geltenbort, K.P.Hickerson, A.T.Holley, C.-Y.Liu, M.Makela, J.Medina, D.J.Morley, C.L.Morris, J.Ramsey, A.Roberts, D.J.Salvat, A.Saunders, E.I.Sharapov, S.K.L.Sjue, B.A.Slaughter, B.VornDick, P.L.Walstrom, Z.Wang, T.L.Womack, A.R.Young, B.A.Zeck, for the UCN|t Collaboration Upscattering of ultracold neutrons from gases NUCLEAR REACTIONS 1,2H, C, F, N, Ne, Ar, Xe(n, n'), E=UCNs from Los Alamos Neutron Science Center (LANSCE) ultracold neutron source; measured Eγ, Iγ, E(n), I(n), upscattered cross sections for room temperature gas targets of hydrogen, deuterium, nitrogen, neon, argon, xenon, C4H10, CF4, and air. Comparison with experimental values for higher neutron energies, and with theoretical calculations. Relevance to measurement of the half-life of free neutron decay at LANSCE using a magnetogravitational trap.
doi: 10.1103/PhysRevC.92.065501
2014SA31 Phys.Rev. C 89, 052501 (2014) D.J.Salvat, E.R.Adamek, D.Barlow, J.D.Bowman, L.J.Broussard, N.B.Callahan, S.M.Clayton, C.Cude-Woods, S.Currie, E.B.Dees, W.Fox, P.Geltenbort, K.P.Hickerson, A.T.Holley, C.-Y.Liu, M.Makela, J.Medina, D.J.Morley, C.L.Morris, S.I.Penttila, J.Ramsey, A.Saunders, S.J.Seestrom, E.I.Sharapov, S.K.L.Sjue, B.A.Slaughter, J.Vanderwerp, B.VornDick, P.L.Walstrom, Z.Wang, T.L.Womack, A.R.Young Storage of ultracold neutrons in the magneto-gravitational trap of the UCNT experiment RADIOACTIVITY 1n(β-); measured mean storage times of ultracold neutrons (UCN) in a magneto-gravitational trap at the LANSCE-LANL UCN source, with and without activation of the field; discussed half-life of neutron decay, and systematic effects.
doi: 10.1103/PhysRevC.89.052501
2013PA32 Phys.Rev. C 88, 048501 (2013);Erratum Phys.Rev. C 92, 069902 (2015) R.W.Pattie, K.P.Hickerson, A.R.Young Limits on tensor coupling from neutron β decay RADIOACTIVITY 1n(β-); calculated Limits of tensor coupling in mixed Gamow-Teller Fermi decays from neutron half-life, electron-neutrino asymmetry in neutron decay, and Ft values in (0+ to 0+) superallowed β decays of 10C, 14O, 22Mg, 26mAl, 34Ar, 34Cl, 38mK, 42Sc, 46V, 50Mn, 54Co, 62Ga, 74Rb.
doi: 10.1103/PhysRevC.88.048501
2013SH41 Phys.Rev. C 88, 037601 (2013) E.I.Sharapov, C.L.Morris, M.Makela, A.Saunders, E.R.Adamek, Y.Bagdasarova, L.J.Broussard, C.B.Cude-Woods, D.E.Fellers, P.Geltenbort, S.I.Hasan, K.P.Hickerson, G.Hogan, A.T.Holley, C.-Y.Liu, M.P.Mendenhall, J.Ortiz, R.W.Pattie, D.G.Phillips, J.Ramsey, D.J.Salvat, S.J.Seestrom, E.Shaw, S.K.L.Sjue, W.E.Sondheim, B.VornDick, Z.Wang, T.L.Womack, A.R.Young, B.A.Zeck Measurements of ultracold neutron upscattering and absorption in polyethylene and vanadium NUCLEAR REACTIONS 1H, V(n, n'), (n, γ), E=ultracold neutrons; measured E(n), I(n), Eγ, Iγ, ultra-cold neutron (UCN) upscattering and capture σ at UCN facility of LANL. Application to nuclear and particle physics, cosmology and gravity.
doi: 10.1103/PhysRevC.88.037601
2013SH46 Phys.Rev. C 88, 064605 (2013) E.I.Sharapov, C.L.Morris, M.Makela, A.Saunders, E.R.Adamek, L.J.Broussard, C.B.Cude-Woods, D.E.Fellers, P.Geltenbort, M.Hartl, S.I.Hasan, K.P.Hickerson, G.Hogan, A.T.Holley, C.M.Lavelle, C.-Y.Liu, M.P.Mendenhall, J.Ortiz, R.W.Pattie, D.G.Phillips, J.Ramsey, D.J.Salvat, S.J.Seestrom, E.Shaw, S.Sjue, W.E.Sondheim, B.VornDick, Z.Wang, T.L.Womack, A.R.Young, B.A.Zeck Upscattering of ultracold neutrons from the polymer [C6H12]n NUCLEAR REACTIONS 1H(n, n'), E=ultracold; measured spectra and rates of upscattered neutrons up to 100 meV range, shapes of spectra at LANSCE-LANL facility; deduced similar density of states in polyethylene (PE) and polymethylpentene (PMP) samples. Analysis using MCNP computer code.
doi: 10.1103/PhysRevC.88.064605
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