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NSR database version of April 11, 2024.

Search: Author = M.S.Dewey

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2023WI03      Phys.Rev. D 107, 118501 (2023)

F.E.Wietfeldt, R.Biswas, J.Caylor, B.Crawford, M.S.Dewey, N.Fomin, G.L.Greene, C.C.Haddock, S.F.Hoogerheide, H.P.Mumm, J.S.Nico, W.M.Snow, J.Zuchegno

Comment on "Search for explanation of the neutron lifetime anomaly"

RADIOACTIVITY 1NN(β-); analyzed available data; deduced T1/2 measurement validation, lack of missing corrections and systematic uncertainties. The beam neutron lifetime experiment performed at NIST.

doi: 10.1103/PhysRevD.107.118501
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
Citations: PlumX Metrics

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
Citations: PlumX Metrics

2016BA29      Phys.Rev.Lett. 116, 242501 (2016)

M.J.Bales, R.Alarcon, C.D.Bass, E.J.Beise, H.Breuer, J.Byrne, T.E.Chupp, K.J.Coakley, R.L.Cooper, M.S.Dewey, S.Gardner, T.R.Gentile, D.He, H.P.Mumm, J.S.Nico, B.O'Neill, A.K.Thompson, F.E.Wietfeldt, for the RDK II Collaboration

Precision Measurement of the Radiative β Decay of the Free Neutron

RADIOACTIVITY 1NN(β-); measured decay products, Eγ, Iγ, Eβ, Iβ, Ep, Ip; deduced photon energy spectrum from neutron radiative decay branching ratio and its uncertainties. Comparison with theoretical calculations.

doi: 10.1103/PhysRevLett.116.242501
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Data from this article have been entered in the XUNDL database. For more information, click here.

2013YU07      Phys.Rev.Lett. 111, 222501 (2013)

A.T.Yue, M.S.Dewey, D.M.Gilliam, G.L.Greene, A.B.Laptev, J.S.Nico, W.M.Snow, F.E.Wietfeldt

Improved Determination of the Neutron Lifetime

NUCLEAR REACTIONS 6Li(n, t), E not given; measuring reaction products, En, In; deduced neutron monitor efficiency, updated neutron T1/2 or lifetime. ENDF/B-VI evaluated neutron library, comparison with available data.

RADIOACTIVITY 1NN(β-); analyzed available data; deduced an updated T1/2 and uncertainties.

doi: 10.1103/PhysRevLett.111.222501
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Data from this article have been entered in the XUNDL database. For more information, click here.

2010CO03      Phys.Rev. C 81, 035503 (2010)

R.L.Cooper, T.E.Chupp, M.S.Dewey, T.R.Gentile, H.P.Mumm, J.S.Nico, A.K.Thompson, B.M.Fisher, I.Kremsky, F.E.Wietfeldt, E.J.Beise, K.G.Kiriluk, J.Byrne, K.J.Coakley, C.Fu

Radiative β decay of the free neutron

RADIOACTIVITY 1n(β-); measured Eγ, Ep, E(e), peγ-coin; deduced branching ratio for radiative decay (inner bremsstrahlung) of neutron in 15-340 keV photon energy range. Monte-Carlo simulations of the spectra. Comparison with theoretical predictions.

doi: 10.1103/PhysRevC.81.035503
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Data from this article have been entered in the XUNDL database. For more information, click here.

2006DE21      Phys.Rev. C 73, 044303 (2006)

M.S.Dewey, E.G.Kessler, Jr., R.D.Deslattes, H.G.Borner, M.Jentschel, C.Doll, P.Mutti

Precision measurement of the 29Si, 33S, and 36Cl binding energies

NUCLEAR REACTIONS 28Si, 32S, 35Cl(n, γ), E=reactor; measured Eγ, Iγ. 29Si, 33S, 36Cl deduced binding energies. Flat-crystal spectrometer.

doi: 10.1103/PhysRevC.73.044303
Citations: PlumX Metrics

2006NI13      Nature(London) 444, 1059 (2006)

J.S.Nico, M.S.Dewey, T.R.Gentile, H.P.Mumm, A.K.Thompson, B.M.Fisher, I.Kremsky, F.E.Wietfeldt, T.E.Chupp, R.L.Cooper, E.J.Beise, K.G.Kiriluk, J.Byrne, K.J.Coakley

Observation of the radiative decay mode of the free neutron

RADIOACTIVITY 1n(β-); measured Eγ, βγ-, (proton)γ-coin; deduced branching ratio for radiative decay.

doi: 10.1038/nature05390
Citations: PlumX Metrics

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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2005FI11      J.Res.Natl.Inst.Stand.Technol. 110, 421 (2005)

B.M.Fisher, F.E.Wietfeldt, M.S.Dewey, T.R.Gentile, J.S.Nico, A.K.Thompson, K.J.Coakley, E.J.Beise, K.G.Kiriluk, J.Byrne

Detecting the Radiative Decay Mode of the Neutron

doi: 10.6028/jres.110.064
Citations: PlumX Metrics

2005NI13      Phys.Rev. C 71, 055502 (2005)

J.S.Nico, M.S.Dewey, D.M.Gilliam, F.E.Wietfeldt, X.Fei, W.M.Snow, G.L.Greene, J.Pauwels, R.Eykens, A.Lamberty, J.Van Gestel, R.D.Scott

Measurement of the neutron lifetime by counting trapped protons in a cold neutron beam

RADIOACTIVITY 1n(β-); measured T1/2. Cold neutrons, in-beam technique.

doi: 10.1103/PhysRevC.71.055502
Citations: PlumX Metrics

2005NI14      J.Res.Natl.Inst.Stand.Technol. 110, 137 (2005)

J.S.Nico, M.Arif, M.S.Dewey, T.R.Gentile, D.M.Gilliam, P.R.Huffman, D.L.Jacobson, A.K.Thompson

The Fundamental Neutron Physics Facilities at NIST

doi: 10.6028/jres.110.013
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2005RA34      Nature(London) 438, 1096 (2005)

S.Rainville, J.K.Thompson, E.G.Myers, J.M.Brown, M.S.Dewey, E.G.Kessler, R.D.Deslattes, H.G.Borner, M.Jentschel, P.Mutti, D.E.Pritchard

A direct test of E=mc2

ATOMIC MASSES 28,29Si, 32,33S; measured mass ratios. Penning trap.

doi: 10.1038/4381096a
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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
Citations: PlumX Metrics

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
Citations: PlumX Metrics

2005WI17      J.Res.Natl.Inst.Stand.Technol. 110, 327 (2005)

F.E.Wietfeldt, M.S.Dewey, D.M.Gilliam, J.S.Nico, X.Fei, W.M.Snow, G.L.Greene, J.Pauwels, R.Eykens, A.Lamberty, J.Van Gestel

Measurement of the Neutron Lifetime by Counting Trapped Protons

RADIOACTIVITY 1n(β-); measured T1/2. Trapped proton counting method.

doi: 10.6028/jres.110.048
Citations: PlumX Metrics

2003DE25      Phys.Rev.Lett. 91, 152302 (2003)

M.S.Dewey, D.M.Gilliam, J.S.Nico, F.E.Wietfeldt, X.Fei, W.M.Snow, G.L.Greene, J.Pauwels, R.Eykens, A.Lamberty, J.Van Gestel

Measurement of the Neutron Lifetime Using a Proton Trap

RADIOACTIVITY 1n(β-); measured T1/2. In-beam method, comparison with previous results.

doi: 10.1103/PhysRevLett.91.152302
Citations: PlumX Metrics

2001BR15      Phys.Rev. C63, 055502 (2001)

C.R.Brome, J.S.Butterworth, S.N.Dzhosyuk, C.E.H.Mattoni, D.N.McKinsey, J.M.Doyle, P.R.Huffman, M.S.Dewey, F.E.Wietfeldt, R.Golub, K.Habicht, G.L.Greene, S.K.Lamoreaux, K.J.Coakley

Magnetic Trapping of Ultracold Neutrons

RADIOACTIVITY 1n(β-); measured trapped neutron population vs time; deduced T1/2. Magnetic confinement of ultracold neutrons.

doi: 10.1103/PhysRevC.63.055502
Citations: PlumX Metrics

2001MO41      Yad.Fiz. 64, No 11, 2040 (2001); Phys.Atomic Nuclei 64, 1955 (2001)

Yu.A.Mostovoi, I.A.Kuznetsov, V.A.Solovei, A.P.Serebrov, I.V.Stepanenko, T.K.Baranova, A.V.Vasiliev, Yu.P.Rudnev, B.G.Yerozolimsky, M.S.Dewey, F.Wietfeldt, O.Zimmer, V.V.Nesvizhevsky

Experimental Value of GA/GV from a Measurement of Both P-Odd Correlations in Free-Neutron Decay

RADIOACTIVITY 1n(β-); measured P-odd correlations; deduced weak-interaction parameter.

doi: 10.1134/1.1423745
Citations: PlumX Metrics

2000DE25      J.Res.Natl.Inst.Stand.Technol. 105, 11 (2000)

M.S.Dewey, E.G.Kessler, Jr.

Precision Measurement of Fudamental Constants using GAMS4

NUCLEAR REACTIONS 1H, 35Cl(n, γ), E=reactor; measured Eγ, Iγ. 2H, 36Cl deduced binding energies. Crystal diffraction method.

doi: 10.6028/jres.105.003
Citations: PlumX Metrics

2000JO03      Nucl.Instrum.Methods Phys.Res. A440, 648 (2000)

G.L.Jones, J.M.Adams, J.M.Anaya, T.J.Bowles, T.E.Chupp, K.P.Coulter, M.S.Dewey, S.J.Freedman, B.K.Fujikawa, A.Garcia, G.L.Greene, S.-R.Hwang, L.J.Lising, H.P.Mumm, J.S.Nico, R.G.H.Robertson, T.D.Steiger, W.A.Teasdale, A.K.Thompson, E.G.Wasserman, F.E.Wietfeldt, J.F.Wilkerson

Time Reversal in Polarized Neutron Decay: The emiT experiment

RADIOACTIVITY 1n(β-); measured proton-electron correlations following polarized neutron decay.

doi: 10.1016/S0168-9002(99)01056-6
Citations: PlumX Metrics

2000KU02      Nucl.Instrum.Methods Phys.Res. A440, 539 (2000)

I.A.Kuznetsov, Yu.P.Rudnev, A.P.Serebrov, V.A.Solovei, I.V.Stepanenko, A.V.Vasiliev, Yu.A.Mostovoy, O.Zimmer, B.G.Yerozolimsky, M.S.Dewey, F.Wietfeldt

An Experiment to Measure λ = GA/GV from a Combination of Angular Correlation Coefficients in the Beta Decay of Polarized Neutrons

doi: 10.1016/S0168-9002(99)01033-5
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2000LI42      Phys.Rev. C62, 055501 (2000)

L.J.Lising, S.R.Hwang, J.M.Adams, T.J.Bowles, M.C.Browne, T.E.Chupp, K.P.Coulter, M.S.Dewey, S.J.Freedman, B.K.Fujikawa, A.Garcia, G.L.Greene, G.L.Jones, H.P.Mumm, J.S.Nico, J.M.Richardson, R.G.H.Robertson, T.D.Steiger, W.A.Teasdale, A.K.Thompson, E.G.Wasserman, F.E.Wietfeldt, R.C.Welsh, J.F.Wilkerson, and the emiT Collaboration

New Limit on the D Coefficient in Polarized Neutron Decay

RADIOACTIVITY 1n(β-); measured pβ-coin following polarized neutron decay; deduced limits on time-reversal invariance coefficient.

doi: 10.1103/PhysRevC.62.055501
Citations: PlumX Metrics

2000SN01      Nucl.Instrum.Methods Phys.Res. A440, 528 (2000)

W.M.Snow, Z.Chowdhuri, M.S.Dewey, X.Fei, D.M.Gilliam, G.L.Greene, J.S.Nico, F.E.Wietfeldt

A Measurement of the Neutron Lifetime by Counting Trapped Protons

doi: 10.1016/S0168-9002(99)01031-1
Citations: PlumX Metrics

1999KE05      Phys.Lett. 255A, 221 (1999)

E.G.Kessler, Jr., M.S.Dewey, R.D.Deslattes, A.Henins, H.G.Borner, M.Jentschel, C.Doll, H.Lehmann

The Deuteron Binding Energy and the Neutron Mass

NUCLEAR REACTIONS 1H(n, γ), E=reactor; measured Eγ, Iγ. 2H deduced binding energy. 1n deduced mass. Crystal diffraction spectrometer.

doi: 10.1016/S0375-9601(99)00078-X
Citations: PlumX Metrics

1998SE11      Zh.Eksp.Teor.Fiz. 113, 1963 (1998); J.Exper.Theo.Phys. 86, 1074 (1998)

A.P.Serebrov, I.A.Kuznetsov, I.V.Stepanenko, A.V.Aldushchenkov, M.S.Lasakov, Yu.A.Mostovoi, B.G.Erozolimsky, M.S.Dewey, F.E.Wietfeldt, O.Zimmer, H.Borner

Measurement of the Antineutrino Escape Asymmetry with Respect to the Spin of the Decaying Neutron

RADIOACTIVITY 1n(β-); measured proton-, β-spectra; deduced neutrino asymmetry. Polarized source.

doi: 10.1134/1.558574
Citations: PlumX Metrics

1995GR24      Nucl.Instrum.Methods Phys.Res. A356, 177 (1995)

G.L.Greene, A.K.Thompson, M.S.Dewey

A Method for the Accurate Determination of the Polarization of a Neutron Beam using a Polarized 3He Spin Filter

doi: 10.1016/0168-9002(94)01249-0
Citations: PlumX Metrics

1995KU30      Phys.Rev.Lett. 75, 794 (1995)

I.A.Kuznetsov, A.P.Serebrov, I.V.Stepanenko, A.V.Alduschenkov, M.S.Lasakov, A.A.Kokin, Yu.A.Mostovoi, B.G.Yerozolimsky, M.S.Dewey

Measurements of the Antineutrino Spin Asymmetry in Beta Decay of the Neutron and Restrictions on the Mass of a Right-Handed Gauge Boson

RADIOACTIVITY 1n(β-); measured antineutrino spin asymmetry; deduced right-handed gauge boson mass restrictions. Polarized neutron.

doi: 10.1103/PhysRevLett.75.794
Citations: PlumX Metrics

1994KU46      Pisma Zh.Eksp.Teor.Fiz. 60, 311 (1994); JETP Lett.(USSR) 60, 315 (1994)

I.A.Kuznetsov, A.P.Serebrov, I.V.Stepanenko, A.V.Aldushchenkov, M.S.Lasakov, A.A.Kokin, Yu.A.Mostovoi, B.G.Erozolimsky, M.S.Dewey

New Measurements of the Antineutrino-Spin Asymmetry in Beta Decay of the Neutron and Restriction for Mass W(R)

RADIOACTIVITY 1n(β-); measured ν(ν-bar)-spin asymmetry coefficient, polarized source; deduced M(W(R)) lower limit.

1990BY05      Phys.Rev.Lett. 65, 289 (1990)

J.Byrne, P.G.Dawber, J.A.Spain, A.P.Williams, M.S.Dewey, D.M.Gilliam, G.L.Greene, G.P.Lamaze, R.D.Scott, J.Pauwels, R.Eykens, A.Lamberty

Measurement of Neutron Lifetime by Counting Trapped Protons

doi: 10.1103/PhysRevLett.65.289
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1989BY04      Nucl.Instrum.Methods Phys.Res. A284, 116 (1989)

J.Byrne, P.G.Dawber, J.A.Spain, M.S.Dewey, D.M.Gilliam, G.L.Greene, G.P.Lamaze, A.P.Williams, J.Pauwels, R.Eykens, J.Van Gestel, A.Lamberty, R.D.Scott

Determination of the Neutron Lifetime by Counting Trapped Protons

RADIOACTIVITY 1n(β-); measured T1/2. In-beam trapped proton counting technique.

doi: 10.1016/0168-9002(89)90261-1
Citations: PlumX Metrics

1989DE45      Nucl.Instrum.Methods Phys.Res. A284, 151 (1989)

M.S.Dewey, E.G.Kessler, Jr., G.L.Greene, R.D.Deslattes, H.Borner, J.Jolie

Fundamental Physics Using Ultrahigh Resolution Gamma Spectroscopy

RADIOACTIVITY 152Eu(EC), (β+), (β-) [from 151Eu(n, γ)]; measured Eγ recoil Doppler shift; deduced γ, neutrino helicity relative signs. Double-flat crystal spectrometer.

doi: 10.1016/0168-9002(89)90270-2
Citations: PlumX Metrics

1989UL01      Nucl.Phys. A505, 193 (1989)

S.Ulbig, K.P.Lieb, Ch.Winter, H.G.Borner, J.Jolie, S.Robinson, P.A.Mando, P.Sona, N.Taccetti, M.S.Dewey, J.G.L.Booten, F.Brandolini

Lifetime Measurements in 57Fe following the 56Fe(n, γ) and 56Fe(d, p) Reactions

NUCLEAR REACTIONS 56Fe(n, γ), E=thernal; measured γ-line shapes. 56Fe(d, p), E=6 MeV; measured σ(Ep), pγ-coin, DSA centroid shifts; deduced 57Fe atom slowing in Fe target. 57Fe deduced levels, J, π, T1/2, γ-branching ratios, B(λ), δ. Shell model calculations.

doi: 10.1016/0375-9474(89)90370-9
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1989WO10      Phys.Rev.Lett. 63, 2721 (1989)

F.L.H.Wolfs, S.J.Freedman, J.E.Nelson, M.S.Dewey, G.L.Greene

Measurement of the 3He(n, γ)4He Cross Section at Thermal Neutron Energies

NUCLEAR REACTIONS 3He(n, γ), E=thermal; measured capture σ. 3H(p, γ), E=1 MeV; measured Eγ, Iγ; deduced astrophysical S-factor for 3He(p, e+ν) reaction.

doi: 10.1103/PhysRevLett.63.2721
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset13185.

1988BO34      Phys.Lett. 215B, 45 (1988)

H.G.Borner, J.Jolie, F.Hoyler, S.Robinson, M.S.Dewey, G.Greene, E.Kessler, R.D.Deslattes

Determination of Short Lifetimes with Ultra High Resolution (n, γ) Spectroscopy

NUCLEAR REACTIONS 48Ti(n, γ), E=thermal; measured Doppler broadening of γ-line shape. 49Ti levels deduced T1/2.

doi: 10.1016/0370-2693(88)91067-2
Citations: PlumX Metrics

1988LI30      Phys.Lett. 215B, 50 (1988)

K.P.Lieb, H.G.Borner, M.S.Dewey, J.Jolie, S.J.Robinson, S.Ulbig, Ch.Winter

Doppler Shift Attenuation Lifetime Measurements in 54Cr following Thermal Neutron Capture

NUCLEAR REACTIONS 53Cr(n, γ), E=thermal; measured Doppler broadened γ-line shapes. 54Cr levels deduced T1/2, B(M1).

NUCLEAR STRUCTURE 52Ti, 54Cr, 56Fe; calculated 2+ states, B(M1).

doi: 10.1016/0370-2693(88)91068-4
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1978DE29      Phys.Rev. C18, 2061 (1978)

M.S.Dewey, H.-E.Mahnke, P.Chowdhury, U.Garg, T.P.Sjoreen, D.B.Fossan

Magnetic Moment Measurement of the 129Cs 11/2- Isomer in a CsI Cubic Environment

NUCLEAR REACTIONS 127I(α, 2nγ), E=22 MeV; measured spin rotation in γ(θ, H, t). 129Cs level deduced g. Pulsed beam, CsI target, TDPAD technique.

doi: 10.1103/PhysRevC.18.2061
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