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NSR database version of April 11, 2024.

Search: Author = T.M.Ito

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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


2020PH01      Phys.Rev. C 102, 035503 (2020)

N.S.Phan, V.Cianciolo, S.M.Clayton, S.A.Currie, R.Dipert, T.M.Ito, S.W.T.MacDonald, C.M.O'Shaughnessy, J.C.Ramsey, G.M.Seidel, E.Smith, E.Tang, Z.Tang, W.Yao

Effect of an electric field on liquid helium scintillation produced by fast electrons

ATOMIC PHYSICS He(e-, γ), E=364-391 keV, [conversion electrons from 113Sn ϵ decay]; He(α, γ), E=5388-5544 keV, [from 241Am α decay]; measured scintillation light yields and spectra produced by fast electrons and α particles stopped in liquid helium (LHe) in the temperature range of 0.44 K to 3.12 K using Medium-Scale High Voltage (MSHV) Test Apparatus, and Hamamatsu R7725 photomuliplier tube (PMT); deduced temperature and electric field dependence of electron and α prompt scintillations, recombination survival probability as a function of time, and apparent temperature dependence of the reduction of scintillations for electrons due to finite ion recombination time and signal integration time. Relevance of liquid He detector for solar neutrino detection, search for electric dipole moment of neutron, measurement of the free neutron lifetime, and detection of light dark-matter particles.

doi: 10.1103/PhysRevC.102.035503
Citations: PlumX Metrics


2018AN12      Eur.Phys.J. A 54, 148 (2018)

A.Anghel, T.L.Bailey, G.Bison, B.Blau, L.J.Broussard, S.M.Clayton, C.Cude-Woods, M.Daum, A.Hawari, N.Hild, P.Huffman, T.M.Ito, K.Kirch, E.Korobkina, B.Lauss, K.Leung, E.M.Lutz, M.Makela, G.Medlin, C.L.Morris, R.W.Pattie, D.Ries, A.Saunders, P.Schmidt-Wellenburg, V.Talanov, A.R.Young, B.Wehring, C.White, M.Wohlmuther, G.Zsigmond

Solid deuterium surface degradation at ultracold neutron sources

doi: 10.1140/epja/i2018-12594-2
Citations: PlumX Metrics


2018IT01      Phys.Rev. C 97, 012501 (2018)

T.M.Ito, E.R.Adamek, N.B.Callahan, J.H.Choi, S.M.Clayton, C.Cude-Woods, S.Currie, X.Ding, D.E.Fellers, P.Geltenbort, S.K.Lamoreaux, C.-Y.Liu, S.MacDonald, M.Makela, C.L.Morris, R.W.Pattie, J.C.Ramsey, D.J.Salvat, A.Saunders, E.I.Sharapov, S.Sjue, A.P.Sprow, Z.Tang, H.L.Weaver, W.Wei, A.R.Young

Performance of the upgraded ultracold neutron source at Los Alamos National Laboratory and its implication for a possible neutron electric dipole moment experiment

RADIOACTIVITY 1n(β-); measured cold neutron time of arrival (TOA) spectrum, UCN density, dUCNcounts normalized to the UCN monitor detector near the exit of the biological shield using upgraded ultracold neutron (UCN) source at Los Alamos National Laboratory. Discussed implication for a possible neutron electric dipole moment (EDM) experiment.

doi: 10.1103/PhysRevC.97.012501
Citations: PlumX Metrics


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
Citations: PlumX Metrics


2014SE04      Phys.Rev. C 89, 025808 (2014)

G.M.Seidel, T.M.Ito, A.Ghosh, B.Sethumadhavan

Charge distribution about an ionizing electron track in liquid helium

ATOMIC PHYSICS 4He(e, e'), [electrons from 63Ni β- decay], E<66 keV; measured distribution of ionization current due to secondary electrons produced by 63Ni β emitter in liquid 4He at temperatures of 0.5K-4.5K; deduced Gaussian distribution with a fat tail at large distances. Discussed photoemission, Auger ejection, and excimers effects.

doi: 10.1103/PhysRevC.89.025808
Citations: PlumX Metrics


2013IT02      Phys.Rev. C 88, 025805 (2013)

T.M.Ito, G.M.Seidel

Scintillation of liquid helium for low-energy nuclear recoils

doi: 10.1103/PhysRevC.88.025805
Citations: PlumX Metrics


2006MA06      Phys.Rev. C 73, 015501 (2006)

J.W.Martin, J.Yuan, M.J.Betancourt, B.W.Filippone, S.A.Hoedl, T.M.Ito, B.Plaster, A.R.Young

New measurements and quantitative analysis of electron backscattering in the energy range of neutron β-decay

NUCLEAR REACTIONS H, C, Be, Si(e, e'), E=43.5, 63.9, 83.8, 104, 124 keV; measured backscattered electron spectra, σ(θ). Plastic scintillator target, comparison with model predictions.

doi: 10.1103/PhysRevC.73.015501
Citations: PlumX Metrics


2005IT02      Phys.Rev.Lett. 94, 161802 (2005)

T.M.Ito, G.Prezeau

Neutrino Mass Constraints on β Decay

doi: 10.1103/PhysRevLett.94.161802
Citations: PlumX Metrics


2004IT03      Phys.Rev.Lett. 92, 102003 (2004)

T.M.Ito, and the SAMPLE Collaboration

Parity-Violating Electron Deuteron Scattering and the Proton's Neutral Weak Axial Vector Form Factor

NUCLEAR REACTIONS 2H(polarized e, e), E=125 MeV; measured parity-violating asymmetry at backward angles. Comparison with model predictions.

doi: 10.1103/PhysRevLett.92.102003
Citations: PlumX Metrics


2004SA45      Phys.Lett. B 593, 55 (2004)

A.Saunders, J.M.Anaya, T.J.Bowles, B.W.Filippone, P.Geltenbort, R.E.Hill, M.Hino, S.Hoedl, G.E.Hogan, T.M.Ito, K.W.Jones, T.Kawai, K.Kirch, S.K.Lamoreaux, C.-Y.Liu, M.Makela, L.J.Marek, J.W.Martin, C.L.Morris, R.N.Mortensen, A.Pichlmaier, S.J.Seestrom, A.Serebrov, D.Smith, W.Teasdale, B.Tipton, R.B.Vogelaar, A.R.Young, J.Yuan

Demonstration of a solid deuterium source of ultra-cold neutrons

doi: 10.1016/j.physletb.2004.04.048
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2004SP01      Phys.Lett. B 583, 79 (2004)

D.T.Spayde, D.H.Beck, R.Hasty, T.Averett, D.Barkhuff, G.Dodson, K.Dow, M.Farkhondeh, W.Franklin, E.Tsentalovich, B.Yang, T.Zwart, E.J.Beise, H.Breuer, R.Tieulent, R.Carr, S.Covrig, B.W.Filippone, T.M.Ito, R.D.McKeown, W.Korsch, S.Kowalski, B.Mueller, M.L.Pitt, M.J.Ramsey-Musolf, J.Ritter, S.P.Wells

The strange quark contribution to the proton's magnetic moment

NUCLEAR REACTIONS 1H(polarized e, e'), E=200 MeV; analyzed polarization observables, related data. 1H deduced strange quark contribution to μ.

doi: 10.1016/j.physletb.2004.01.002
Citations: PlumX Metrics


2003MA75      Phys.Rev. C 68, 055503 (2003)

J.W.Martin, J.Yuan, S.A.Hoedl, B.W.Filippone, D.Fong, T.M.Ito, E.Lin, B.Tipton, A.R.Young

Measurement of electron backscattering in the energy range of neutron β decay

NUCLEAR REACTIONS Be, Si(e, e'), E=43.5-124 keV; measured electron spectra, σ(θ); deduced normal-incidence backscattered fraction. Comparison with model predictions.

doi: 10.1103/PhysRevC.68.055503
Citations: PlumX Metrics


2002MO40      Phys.Rev.Lett. 89, 272501 (2002)

C.L.Morris, J.M.Anaya, T.J.Bowles, B.W.Filippone, P.Geltenbort, R.E.Hill, M.Hino, S.Hoedl, G.E.Hogan, T.M.Ito, T.Kawai, K.Kirch, S.K.Lamoreaux, C.-Y.Liu, M.Makela, L.J.Marek, J.W.Martin, R.N.Mortensen, A.Pichlmaier, A.Saunders, S.J.Seestrom, D.Smith, W.Teasdale, B.Tipton, M.Utsuro, A.R.Young, J.Yuan

Measurements of Ultracold-Neutron Lifetimes in Solid Deuterium

doi: 10.1103/PhysRevLett.89.272501
Citations: PlumX Metrics


2001AU08      Nucl.Phys. A691, 278c (2001)

M.Augsburger, G.Beer, S.Bianco, A.M.Bragadireanu, M.Bregant, W.H.Breunlich, M.Cargnelli, D.Chatellard, C.Curceanu Petrascu, J.-P.Egger, F.L.Fabbri, B.Gartner, C.Guaraldo, R.S.Hayano, M.Iliescu, T.Ishiwatari, T.M.Ito, M.Iwasaki, R.King, P.Knowles, T.Koike, B.Lauss, V.Lucherini, J.Marton, E.Milotti, F.Mulhauser, S.N.Nakamura, T.Ponta, A.C.Sanderson, L.A.Schaller, L.Schellenberg, H.Schneuwly, R.Seki, D.Tomono, T.Yoneyama, E.Zavattini, J.Zmeskal, on behalf of the DEAR Collaboration

The DEAR Experiment on DAΦNE

doi: 10.1016/S0375-9474(01)01044-2
Citations: PlumX Metrics


2001WE09      Phys.Rev. C63, 064001 (2001)

S.P.Wells, T.Averett, D.Barkhuff, D.H.Beck, E.J.Beise, C.Benson, H.Breuer, R.Carr, S.Covrig, J.DelCorso, G.Dodson, C.Eppstein, M.Farkhondeh, B.W.Filippone, T.A.Forest, P.Frasier, R.Hasty, T.M.Ito, C.Jones, W.Korsch, S.Kowalski, P.Lee, E.Maneva, K.McCarty, R.D.McKeown, J.Mikell, B.Mueller, P.Naik, M.L.Pitt, J.Ritter, V.Savu, D.T.Spayde, M.Sullivan, R.Tieulent, E.Tsentalovich, B.Yang, T.Zwart

Measurement of the Vector Analyzing Power in Elastic Electron-Proton Scattering as a Probe of the Double Virtual Compton Amplitude

NUCLEAR REACTIONS 1H(polarized e, e), E=200 MeV; measured azimuthal asymmetry, vector analyzing power; deduced two-photon exchange amplitude.

doi: 10.1103/PhysRevC.63.064001
Citations: PlumX Metrics


1999NA46      Hyperfine Interactions 118, 45 (1999)

S.N.Nakamura, K.Bartlett, G.A.Beer, G.R.Gill, R.S.Hayano, T.M.Ito, M.Iwasaki, L.Lee, G.Mason, A.Olin, H.Outa, M.Salomon, R.Seki, T.Taniguchi, T.P.Terada, G.Trayling, Y.Yamashita, S.Yen

Observation of kaonic hydrogen atom X-ray

NUCLEAR REACTIONS 1H(K-, X), E at rest; measured kaonic hydrogen X-ray spectra; deduced strong-interaction energy shift, width.

ATOMIC PHYSICS, Mesic-Atoms 1H(K-, X), E at rest; measured kaonic hydrogen X-ray spectra; deduced strong-interaction energy shift, width.

doi: 10.1023/A:1012672100283
Citations: PlumX Metrics


1999PE25      Hyperfine Interactions 118, 53 (1999)

C.Petrascu, S.Bianco, A.M.Bragadireanu, F.L.Fabbri, C.Guaraldo, M.Iliescu, T.M.Ito, V.Lucherini, M.Bregant, E.Milotti, A.Vacchi, E.Zavattini, M.Augsburger, D.Chatellard, P.Knowles, F.Mulhauser, L.A.Schaller, L.Schellenberg, H.Schneuwly, J.-P.Egger, D.Varidel, W.H.Breunlich, M.Cargnelli, B.Gartner, R.King, B.Lauss, J.Marton, J.Zmeskal, T.Ponta, S.N.Nakamura, T.Koike, R.S.Hayano, M.Hori, T.Ishikawa, T.Ishiwatari, M.Iwasaki, Y.Akaishi, G.Beer, A.C.Sanderson, R.Seki

Disentangling the K-complex of kaonic hydrogen with DEAR

doi: 10.1023/A:1012624217122
Citations: PlumX Metrics


1998BI09      Acta Phys.Pol. B29, 2269 (1998)

S.Bianco, A.M.Bragadireanu, F.L.Fabbri, C.Guaraldo, M.Iliescu, T.M.Ito, V.Lucherini, C.Petrascu, M.Bregant, E.Milotti, A.Vacchi, E.Zavattini, M.Augsburger, D.Chatellard, P.Knowles, F.Mulhauser, L.A.Schaller, L.Schellenberg, H.Schneuwly, J.-P.Egger, D.Varidel, W.H.Breunlich, M.Cargnelli, B.Gartner, R.King, B.Lauss, J.Marton, J.Zmeskal, T.Ponta, S.N.Nakamura, T.Koike, R.S.Hayano, M.Hori, T.Ishikawa, T.Ishiwatari, M.Iwasaki, Y.Akaishi, G.Beer, A.C.Sanderson, R.Seki

Kaon-Nucleon Interaction Studied by Kaonic X Rays with DEAR at DAΦNE


1998IT01      Nucl.Phys. A629, 197c (1998)

T.M.Ito

Kaon Nucleon Interaction Studied by Kaonic X-Rays

ATOMIC PHYSICS, Mesic-atoms 1H(K-, X), E at rest; measured X-ray spectra; deduced repulsive energy shift. Gas target.

doi: 10.1016/S0375-9474(97)00686-6
Citations: PlumX Metrics


1998IT03      Phys.Rev. C58, 2366 (1998)

T.M.Ito, R.S.Hayano, S.N.Nakamura, T.P.Terada, M.Iwasaki, D.R.Gill, L.Lee, A.Olin, M.Salomon, S.Yen, K.Bartlett, G.A.Beer, G.Mason, G.Trayling, H.Outa, T.Taniguchi, Y.Yamashita, R.Seki

Observation of Kaonic Hydrogen Atom X Rays

ATOMIC PHYSICS, Mesic-atoms 1H(K-, X), E at rest; measured X-ray spectra, pion spectra following K-p absorption; deduced kaonic hydrogen 1s state strong interaction shift, width.

doi: 10.1103/PhysRevC.58.2366
Citations: PlumX Metrics


1998IW03      Nucl.Phys. A639, 501c (1998)

M.Iwasaki, K.Bartlett, G.A.Beer, D.R.Gill, R.S.Hayano, T.M.Ito, L.Lee, G.Mason, S.N.Nakamura, A.Olin, H.Outa, M.Salomon, R.Seki, T.Taniguchi, T.P.Terada, G.Trayling, Y.Yamashita, S.Yen

Discovery of the Repulsive Energy Shift of the Kaonic Hydrogen 1s State

ATOMIC PHYSICS, Mesic-atoms 1H(K-, X), E at rest; measured X-ray spectrum; deduced energy shift.

doi: 10.1016/S0375-9474(98)00318-2
Citations: PlumX Metrics


1997IW01      Phys.Rev.Lett. 78, 3067 (1997)

M.Iwasaki, R.S.Hayano, T.M.Ito, S.N.Nakamura, T.P.Terada, D.R.Gill, L.Lee, A.Olin, M.Salomon, S.Yen, K.Bartlett, G.A.Beer, G.Mason, G.Trayling, H.Outa, T.Taniguchi, Y.Yamashita, R.Seki

Observation of Kaonic Hydrogen K(α) X Rays

NUCLEAR REACTIONS 1H(K-, X), E at rest; measured kaonic hydrogen X-rays; deduced (K-bar N) strong interaction energy shift, width.

ATOMIC PHYSICS, Mesic-Atoms 1H(K-, X), E at rest; measured kaonic hydrogen X-rays; deduced (K-bar N) strong interaction energy shift, width.

doi: 10.1103/PhysRevLett.78.3067
Citations: PlumX Metrics


1995IW01      Nucl.Phys. A585, 239c (1995)

M.Iwasaki, K.Bartlett, G.A.Beer, D.R.Gill, R.S.Hayano, T.M.Ito, L.Lee, F.E.Maas, G.Mason, S.N.Nakamura, A.Olin, H.Outa, M.Salomon, R.Seki, T.Taniguchi, T.P.Terada, G.Trayling, E.Widmann, Y.Yamashita, S.Yen, Y.Yonezawa

Kaonic Hydrogen X-Ray Experiment at KEK

ATOMIC PHYSICS, Mesic-Atoms 1H(K-, X), E not given; measured kaonic atom X-ray energy shift, width.

doi: 10.1016/0375-9474(94)00572-5
Citations: PlumX Metrics


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