NSR Query Results
Output year order : Descending NSR database version of May 6, 2024. Search: Author = A.Komives Found 15 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
2021HA20 Phys.Rev. C 103, 045502 (2021) M.T.Hassan, W.A.Byron, G.Darius, C.DeAngelis, F.E.Wietfeldt, B.Collett, G.L.Jones, A.Komives, G.Noid, E.J.Stephenson, F.Bateman, M.S.Dewey, T.R.Gentile, M.P.Mendenhall, J.S.Nico Measurement of the neutron decay electron-antineutrino angular correlation by the aCORN experiment RADIOACTIVITY 1n(β-); measured E(β-), E(p), asymmetry in proton time-of-flight for (proton)(β-)-delayed coincidence events, and the (electron)(antineutrino)(θ) using aCORN method at the high-flux cold neutron beam on the new NG-C neutron guide end position at the NIST Center for Neutron Research; deduced 'a' coefficient of electron-antineutrino correlation, and the ratio of weak coupling constant λ=GA/GV. Comparison with previous experimental results since 1978, and with the PDG evaluation.
doi: 10.1103/PhysRevC.103.045502
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
2017DA16 Phys.Rev.Lett. 119, 042502 (2017) G.Darius, W.A.Byron, C.R.DeAngelis, M.T.Hassan, F.E.Wietfeldt, B.Collett, G.L.Jones, M.S.Dewey, M.P.Mendenhall, J.S.Nico, H.Park, A.Komives, E.J.Stephenson Measurement of the Electron-Antineutrino Angular Correlation in Neutron β Decay RADIOACTIVITY 1NN(β-); measured decay products, Ep, Ip, Eβ, Iβ; deduced wishbone asymmetry, electron-antineutrino angular correlation (a coefficient). aCORN experiment, comparison with available data.
doi: 10.1103/PhysRevLett.119.042502
2008BH08 Phys.Rev. C 77, 065503 (2008) M.Bhattacharya, D.Melconian, A.Komives, S.Triambak, A.Garcia, E.G.Adelberger, B.A.Brown, M.W.Cooper, T.Glasmacher, V.Guimaraes, P.F.Mantica, A.M.Oros-Peusquens, J.I.Prisciandaro, M.Steiner, H.E.Swanson, S.L.Tabor, M.Wiedeking ft value of the 0+ → 0+ β+ decay of 32Ar: A measurement of isospin symmetry breaking in a superallowed decay RADIOACTIVITY 32Ar(β+) [from 9Be(36Ar, X), E=100 MeV/nucleon]; measured Eγ, Iγ, Ep, Ip, pγ-coin. 32Ar; deduced superallowed decay branching ratio, ft value, isospin symmetry breaking correction. 32Cl; deduced levels, J, π. 31S; deduced levels, π. Comparison with theoretical data. ATOMIC MASSES 32Cl; measured masses. Q-value method.
doi: 10.1103/PhysRevC.77.065503
2005CO14 J.Res.Natl.Inst.Stand.Technol. 110, 401 (2005) B.Collett, R.Anderman, S.Balashov, F.B.Bateman, J.Byrne, M.S.Dewey, B.M.Fisher, L.Goldin, G.Jones, A.Komives, T.Konopka, M.Leuschner, Yu.Mostovoy, J.S.Nico, A.K.Thompson, C.Trull, F.E.Wietfeldt, R.Wilson, B.G.Yerozolimsky Proposed Measurement of the Beta-Neutrino Correlation in Neutron Decay
doi: 10.6028/jres.110.060
2005KO23 J.Res.Natl.Inst.Stand.Technol. 110, 221 (2005) A.Komives, A.K.Sint, M.Bowers, M.Snow A Gamma Polarimeter for Neutron Polarization Measurement in a Liquid Deuterium Target for Parity Violation in Polarized Neutron Capture on Deuterium
doi: 10.6028/jres.110.028
2005WI02 Nucl.Instrum.Methods Phys.Res. A538, 574 (2005) F.E.Wietfeldt, C.Trull, R.Anderman, F.B.Bateman, M.S.Dewey, A.Komives, A.K.Thompson, S.Balashov, Yu.Mostovoy A backscatter-suppressed beta spectrometer for neutron decay studies
doi: 10.1016/j.nima.2004.08.123
2005WI15 Nucl.Instrum.Methods Phys.Res. A545, 181 (2005) F.E.Wietfeldt, B.M.Fisher, C.Trull, G.L.Jones, B.Collet, L.Goldin, B.G.Yerozolimsky, R.Wilson, S.Balashov, Yu.Mostovoy, A.Komives, M.Leuschner, J.Byrne, F.B.Bateman, M.S.Dewey, J.S.Nico, A.K.Thompson A method for an improved measurement of the electron-antineutrino correlation in free neutron beta decay RADIOACTIVITY 1n(β-); calculated recoil proton spectrum, pβ-coin, asymmetry. New experimental technique with reduced uncertainty discussed.
doi: 10.1016/j.nima.2005.01.339
2002PY01 Phys.Rev.Lett. 88, 122501 (2002) M.C.Pyle, A.Garcia, E.Tatar, J.Cox, B.K.Nayak, S.Triambak, B.Laughman, A.Komives, L.O.Lamm, J.E.Rolon, T.Finnessy, L.D.Knutson, P.A.Voytas Revalidation of the Isobaric Multiplet Mass Equation NUCLEAR REACTIONS 32S(p, p), E=3.2-3.7 MeV; measured σ(E, θ). 33Cl deduced resonance energy. Implications for isobaric multiplet mass equation discussed.
doi: 10.1103/PhysRevLett.88.122501
2001PR05 Nucl.Phys. A682, 200c (2001) J.I.Prisciandaro, P.F.Mantica, D.W.Anthony, M.W.Cooper, A.Garcia, D.E.Groh, A.Komives, W.Kumarasiri, P.A.Lofy, A.M.Oros-Peusquens, S.L.Tabor, M.Wiedeking Low-Energy Structure of Neutron-Rich Cr Isotopes RADIOACTIVITY 58V(β-) [from 70Zn fragmentation]; measured Eγ, Iγ, βγ-coin, T1/2. 58Cr deduced level, possible J, π. Comparison with neighboring isotopes.
doi: 10.1016/S0375-9474(00)00640-0
2001PR13 Phys.Lett. 510B, 17 (2001) J.I.Prisciandaro, P.F.Mantica, B.A.Brown, D.W.Anthony, M.W.Cooper, A.Garcia, D.E.Groh, A.Komives, W.Kumarasiri, P.A.Lofy, A.M.Oros-Peusquens, S.L.Tabor, M.Wiedeking New Evidence for a Subshell Gap at N = 32 RADIOACTIVITY 58V(β-) [from 9Be(70Zn, X)]; measured Eγ, Iγ, βγ-coin, T1/2. 58Cr deduced level, J, π, configuration, subshell closure. Mass separator. Level systematics in neighboring nuclides discussed.
doi: 10.1016/S0370-2693(01)00565-2
2000OR04 Phys.Rev.Lett. 85, 2909 (2000) C.E.Ortiz, A.Garcia, R.A.Waltz, M.Bhattacharya, A.K.Komives Shape of the 8B Alpha and Neutrino Spectra RADIOACTIVITY 8B(EC) [from 6Li(3He, n)]; measured β-delayed α spectrum; deduced neutrino spectrum. Implications for solar neutrino measurements discussed.
doi: 10.1103/PhysRevLett.85.2909
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
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