Search Results - "Wietfeldt, F E"

Measurement of the Electron-Antineutrino Angular Correlation in Neutron β Decay by Darius, G, Byron, W A, DeAngelis, C R, Hassan, M T, Wietfeldt, F E, Collett, B, Jones, G L, Dewey, M S, Mendenhall, M P, Nico, J S, Park, H, Komives, A, Stephenson, E J

“…We report the first result for the electron-antineutrino angular correlation (a coefficient) in free neutron β decay from the aCORN experiment. aCORN uses a…”
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Measurements of the Neutron Lifetime by Wietfeldt, F.

“…Free neutron decay is a fundamental process in particle and nuclear physics. It is the prototype for nuclear beta decay and other semileptonic weak particle…”
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First Observation of Cyclotron Radiation from MeV-Scale e ± following Nuclear β Decay by Byron, W., Harrington, H., Taylor, R. J., DeGraw, W., Buzinsky, N., Dodson, B., Fertl, M., García, A., Garvey, G., Graner, B., Guigue, M., Hayen, L., Huyan, X., Khaw, K. S., Knutsen, K., McClain, D., Melconian, D., Müller, P., Novitski, E., Oblath, N. S., Robertson, R. G. H., Rybka, G., Savard, G., Smith, E., Stancil, D. D., Sternberg, M., Storm, D. W., Swanson, H. E., Tedeschi, J. R., VanDevender, B. A., Wietfeldt, F. E., Young, A. R., Zhu, X.

“…We present an apparatus for detection of cyclotron radiation yielding a frequency-based β± kinetic energy determination in the 5 keV to 2.1 MeV range,…”
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Precision Measurement of the Radiative β Decay of the Free Neutron by Bales, M J, Alarcon, R, Bass, C D, Beise, E J, Breuer, H, Byrne, J, Chupp, T E, Coakley, K J, Cooper, R L, Dewey, M S, Gardner, S, Gentile, T R, He, D, Mumm, H P, Nico, J S, O'Neill, B, Thompson, A K, Wietfeldt, F E

“…The standard model predicts that, in addition to a proton, an electron, and an antineutrino, a continuous spectrum of photons is emitted in the β decay of the…”
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Larmor power limit for cyclotron radiation of relativistic particles in a waveguide by Buzinsky, N, Taylor, R J, Byron, W, DeGraw, W, Dodson, B, Fertl, M, García, A, Goodson, A P, Graner, B, Harrington, H, Hayen, L, Malavasi, L, McClain, D, Melconian, D, Müller, P, Novitski, E, Oblath, N S, Robertson, R G H, Rybka, G, Savard, G, Smith, E, Stancil, D D, Storm, D W, Swanson, H E, Tedeschi, J R, VanDevender, B A, Wietfeldt, F E, Young, A R

“…Abstract Cyclotron radiation emission spectroscopy (CRES) is a modern technique for high-precision energy spectroscopy, in which the energy of a charged…”
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Improved determination of the neutron lifetime by Yue, A T, Dewey, M S, Gilliam, D M, Greene, G L, Laptev, A B, Nico, J S, Snow, W M, Wietfeldt, F E

“…The most precise determination of the neutron lifetime using the beam method was completed in 2005 and reported a result of τ(n)=(886.3±1.2[stat]±3.2[syst]) s…”
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Precision Measurement of the Neutron Scattering Length of He 4 Using Neutron Interferometry by Haun, R., Wietfeldt, F. E., Arif, M., Huber, M. G., Black, T. C., Heacock, B., Pushin, D. A., Shahi, C. B.

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Improved Determination of the Neutron Lifetime by Yue, A. T., Dewey, M. S., Gilliam, D. M., Greene, G. L., Laptev, A. B., Nico, J. S., Snow, W. M., Wietfeldt, F. E.

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Precision Measurement of the Neutron Scattering Length of 4He Using Neutron Interferometry by Haun, R, Wietfeldt, F E, Arif, M, Huber, M G, Black, T C, Heacock, B, Pushin, D A, Shahi, C B

“…We report a 0.08% measurement of the bound neutron scattering length of 4He using neutron interferometry. The result is b = (3.0982 ± 0.0021 [stat] ± 0.0014…”
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Measurement of the neutron lifetime using a proton trap by Dewey, M S, Gilliam, D M, Nico, J S, Wietfeldt, F E, Fei, X, Snow, W M, Greene, G L, Pauwels, J, Eykens, R, Lamberty, A, Van Gestel, J

“…We report a new measurement of the neutron decay lifetime by the absolute counting of in-beam neutrons and their decay protons. Protons were confined in a…”
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Magnetic trapping of neutrons by Huffman, P. R, Brome, C. R, Butterworth, J. S, Coakley, K. J, Dewey, M. S, Dzhosyuk, S. N, Golub, R, Greene, G. L, Habicht, K, Lamoreaux, S. K, Mattoni, C. E. H, McKinsey, D. N, Wietfeldt, F. E, Doyle, J. M

“…Accurate measurement of the lifetime of the neutron (which is unstable to beta decay) is important for understanding the weak nuclear force and the creation of…”
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New limit on time-reversal violation in beta decay by Mumm, H P, Chupp, T E, Cooper, R L, Coulter, K P, Freedman, S J, Fujikawa, B K, García, A, Jones, G L, Nico, J S, Thompson, A K, Trull, C A, Wilkerson, J F, Wietfeldt, F E

“…We report the results of an improved determination of the triple correlation DP·(p(e)×p(v)) that can be used to limit possible time-reversal invariance in the…”
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Measuring the neutron's mean square charge radius using neutron interferometry by Wietfeldt, F.E., Huber, M., Black, T.C., Kaiser, H., Arif, M., Jacobson, D.L., Werner, S.A.

“…The neutron is electrically neutral, but its substructure consists of charged quarks so it may have an internal charge distribution. In fact it is known to…”
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The aCORN backscatter-suppressed beta spectrometer by Hassan, M.T., Bateman, F., Collett, B., Darius, G., DeAngelis, C., Dewey, M.S., Jones, G.L., Komives, A., Laptev, A., Mendenhall, M.P., Nico, J.S., Noid, G., Stephenson, E.J., Stern, I., Trull, C., Wietfeldt, F.E.

“…Backscatter of electrons from a beta detector, with incomplete energy deposition, can lead to undesirable effects in many types of experiments. We present and…”
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Gravitationally induced quantum interference using a floating interferometer crystal by Kaiser, H., Armstrong, N.L., Wietfeldt, F.E., Huber, M., Black, T.C., Arif, M., Jacobson, D.L., Werner, S.A.

“…Since the first observation of the phase shift of a neutron de Broglie wave induced by Earth's gravity, a series of increasingly sophisticated and precise…”
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aCORN: An experiment to measure the electron–antineutrino correlation in neutron decay by Wietfeldt, F.E., Byrne, J., Collett, B., Dewey, M.S., Jones, G.L., Komives, A., Laptev, A., Nico, J.S., Noid, G., Stephenson, E.J., Stern, I., Trull, C., Yerozolimsky, B.G.

“…The aCORN experiment is designed to make a precision ( < 1 % ) measurement of the electron–antineutrino angular correlation ( a-coefficient) in neutron beta…”
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Measurement of the neutron lifetime by counting trapped protons in a cold neutron beam by Nico, J. S., Dewey, M. S., Gilliam, D. M., Wietfeldt, F. E., Fei, X., Snow, W. M., Greene, G. L., Pauwels, J., Eykens, R., Lamberty, A., Gestel, J. Van, Scott, R. D.

“…A measurement of the neutron lifetime {tau}{sub n} performed by the absolute counting of in-beam neutrons and their decay protons has been completed. Protons…”
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A gamma- and X-ray detector for cryogenic, high magnetic field applications by Cooper, R.L., Alarcon, R., Bales, M.J., Bass, C.D., Beise, E.J., Breuer, H., Byrne, J., Chupp, T.E., Coakley, K.J., Dewey, M.S., Fu, C., Gentile, T.R., Mumm, H.P., Nico, J.S., O'Neill, B., Pulliam, K., Thompson, A.K., Wietfeldt, F.E.

“…As part of an experiment to measure the spectrum of photons emitted in beta-decay of the free neutron, we developed and operated a detector consisting of 12…”
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A Backscatter Suppressed Electron Detector for the Measurement of "a" by Komives, A, Wietfeldt, F E, Trull, C, Bateman, F B, Dewey, M S, Thompson, A K, Anderman, R, Balashov, S, Mostovoy, Yu

“…A new method of measuring the electron-antineutrino angular correlation coefficient, little "a", from neutron decay-to be performed at the National Institute…”
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Detecting the Radiative Decay Mode of the Neutron by Fisher, B M, Wietfeldt, F E, Dewey, M S, Gentile, T R, Nico, J S, Thompson, A K, Coakley, K J, Beise, E J, Kiriluk, K G, Byrne, J

“…Beta decay of the neutron into a proton, electron, and electron antineutrino is occasionally accompanied by the emission of a photon. Despite decades of…”
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