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NSR database version of April 24, 2024.

Search: Author = A.Komives

Found 15 matches.

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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
Citations: PlumX Metrics


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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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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Note: The following list of authors and aliases matches the search parameter A.Komives: , A.K.KOMIVES