Search Results - "Dewey, M.S"

Survival analysis approach to account for non-exponential decay rate effects in lifetime experiments by Coakley, K.J., Dewey, M.S., Huber, M.G., Huffer, C.R., Huffman, P.R., Marley, D.E., Mumm, H.P., O׳Shaughnessy, C.M., Schelhammer, K.W., Thompson, A.K., Yue, A.T.

“…In experiments that measure the lifetime of trapped particles, in addition to loss mechanisms with exponential survival probability functions, particles can be…”
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aCORN: Measuring the electron-antineutrino correlation in neutron beta decay by Wietfeldt, F.E., Byron, W.A., Collett, B., Darius, G., DeAngelis, C.R., Dewey, M.S., Hassan, M.T., Jones, G., Komives, A., Mendenhall, M.P., Nico, J.S., Stephenson, E.J.

“…The aCORN experiment uses a novel asymmetry method to measure the electron-antineutrino correlation ( a -coefficient) in free neutron decay that does not…”
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The Fundamental Neutron Physics Facilities at NIST by Nico, J S, Arif, M, Dewey, M S, Gentile, T R, Gilliam, D M, Huffman, P R, Jacobson, D L, Thompson, A K

“…The program in fundamental neutron physics at the National Institute of Standards and Technology (NIST) began nearly two decades ago. The Neutron Interactions…”
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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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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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Test of 3He-based neutron polarizers at NIST by Jones, G.L, Gentile, T.R, Thompson, A.K, Chowdhuri, Z, Dewey, M.S, Snow, W.M, Wietfeldt, F.E

“…Neutron spin filters based on polarized 3 He are useful over a wide neutron energy range and have a large angular acceptance among other advantages. Two…”
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Neutron polarimetry using a polarized 3He cell for the aCORN experiment by Schafer, B.C., Byron, W.A., Chen, W.C., Collett, B., Dewey, M.S., Gentile, T.R., Hassan, Md.T., Jones, G.L., Komives, A., Wietfeldt, F.E.

“…The neutron polarization of the NG-C beamline at the NIST Center for Neutron Research was measured as part of the aCORN neutron beta decay experiment. Neutron…”
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Measurement of the Neutron Lifetime by Counting Trapped Protons by Wietfeldt, F E, Dewey, M S, Gilliam, D M, Nico, J S, Fei, X, Snow, W M, Greene, G L, Pauwels, J, Eykens, R, Lamberty, A, Van Gestel, J

“…We measured the neutron decay lifetime by counting in-beam neutron decay recoil protons trapped in a quasi-Penning trap. The absolute neutron beam fluence was…”
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Proposed Measurement of the Beta-Neutrino Correlation in Neutron Decay by Collett, B, Anderman, R, Balashov, S, Bateman, F B, Byrne, J, Dewey, M S, Fisher, B M, Goldin, L, Jones, G, Komives, A, Konopka, T, Leuschner, M, Mostovoy, Yu, Nico, J S, Thompson, A K, Trull, C, Wietfeldt, F E, Wilson, R, Yerozolimsky, B G

“…Currently, the beta-neutrino asymmetry has the largest uncertainty (4 %) of the neutron decay angular correlations. Without requiring polarimetry this decay…”
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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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Time reversal in polarized neutron decay: the emiT experiment by Jones, G.L, Adams, J.M, Anaya, J.M, Bowles, T.J, Chupp, T.E, Coulter, K.P, Dewey, M.S, Freedman, S.J, Fujikawa, B.K, Garcia, A, Greene, G.L, Hwang, S.-R, Lising, L.J, Mumm, H.P, Nico, J.S, Robertson, R.G.H, Steiger, T.D, Teasdale, W.A, Thompson, A.K, Wasserman, E.G, Wietfeldt, F.E, Wilkerson, J.F

“…The standard electro-weak model predicts negligible violation of time-reversal invariance in light quark processes. We report on an experimental test of…”
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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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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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Systematic error in the precision measurement of the mean wavelength of a nearly monochromatic neutron beam due to geometric errors by Coakley, K.J., Dewey, M.S., Yue, A.T., Laptev, A.B.

“…Many experiments at neutron scattering facilities require nearly monochromatic neutron beams. In such experiments, one must accurately measure the mean…”
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An experiment for the precision measurement of the radiative decay mode of the neutron by Cooper, R.L., Bass, C.D., Beise, E.J., Breuer, H., Byrne, J., Chupp, T.E., Coakley, K.J., Dewey, M.S., Fisher, B.M., Fu, C., Gentile, T.R., McGonagle, M., Mumm, H.P., Nico, J.S., Thompson, A.K., Wietfeldt, F.E.

“…The familiar neutron decay into a proton, electron, and antineutrino can be accompanied by photons with sufficient energy to be detected. We recently reported…”
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A method for an improved measurement of the electron–antineutrino correlation in free neutron beta decay by Wietfeldt, F.E., Fisher, B.M., Trull, C., Jones, G.L., Collet, B., Goldin, L., Yerozolimsky, B.G., Wilson, R., Balashov, S., Mostovoy, Yu, Komives, A., Leuschner, M., Byrne, J., Bateman, F.B., Dewey, M.S., Nico, J.S., Thompson, A.K.

“…The angular correlation between the beta electron and antineutrino in nuclear beta decay is characterized by the dimensionless parameter a . The value of a for…”
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Particle and photon detection for a neutron radiative decay experiment by Gentile, T.R., Dewey, M.S., Mumm, H.P., Nico, J.S., Thompson, A.K., Chupp, T.E., Cooper, R.L., Fisher, B.M., Kremsky, I., Wietfeldt, F.E., Kiriluk, K.G., Beise, E.J.

“…We present the particle and photon detection methods employed in a program to observe neutron radiative beta-decay. The experiment is located at the NG-6 beam…”
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The deuteron binding energy and the neutron mass by Kessler, Jr, E.G., Dewey, M.S., Deslattes, R.D., Henins, A., Börner, H.G., Jentschel, M., Doll, C., Lehmann, H.

“…A new value for the deuteron binding energy of S(d)=2.38817007(42)×10 −3 u is reported based on an absolute wavelength determination of the 2.2 MeV n–p capture…”
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The GAMS4 flat crystal facility by Kessler, E.G., Dewey, M.S., Deslattes, R.D., Henins, A., Börner, H.G., Jentschel, M., Lehmann, H.

“…A high-resolution flat-crystal gamma-ray facility, GAMS4, has been constructed at the high-flux reactor at the Institut Laue-Langevin (ILL), Grenoble, France…”
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