Search Results - "Pattie, R. W."

Search for the Neutron Decay n→X+γ, Where X is a Dark Matter Particle by Tang, Z, Blatnik, M, Broussard, L J, Choi, J H, Clayton, S M, Cude-Woods, C, Currie, S, Fellers, D E, Fries, E M, Geltenbort, P, Gonzalez, F, Hickerson, K P, Ito, T M, Liu, C-Y, MacDonald, S W T, Makela, M, Morris, C L, O'Shaughnessy, C M, Pattie, R W, Plaster, B, Salvat, D J, Saunders, A, Wang, Z, Young, A R, Zeck, B A

“…Fornal and Grinstein recently proposed that the discrepancy between two different methods of neutron lifetime measurements, the beam and bottle methods, can be…”
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Measurement of the neutron lifetime using a magneto-gravitational trap and in situ detection by Pattie, Jr, R W, Callahan, N B, Cude-Woods, C, Adamek, E R, Broussard, L J, Clayton, S M, Currie, S A, Dees, E B, Ding, X, Engel, E M, Fellers, D E, Fox, W, Geltenbort, P, Hickerson, K P, Hoffbauer, M A, Holley, A T, Komives, A, Liu, C-Y, MacDonald, S W T, Makela, M, Morris, C L, Ortiz, J D, Ramsey, J, Salvat, D J, Saunders, A, Seestrom, S J, Sharapov, E I, Sjue, S K, Tang, Z, Vanderwerp, J, Vogelaar, B, Walstrom, P L, Wang, Z, Wei, W, Weaver, H L, Wexler, J W, Womack, T L, Young, A R, Zeck, B A

“…The precise value of the mean neutron lifetime, τ , plays an important role in nuclear and particle physics and cosmology. It is used to predict the ratio of…”
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Determination of the axial-vector weak coupling constant with ultracold neutrons by Liu, J, Mendenhall, M P, Holley, A T, Back, H O, Bowles, T J, Broussard, L J, Carr, R, Clayton, S, Currie, S, Filippone, B W, García, A, Geltenbort, P, Hickerson, K P, Hoagland, J, Hogan, G E, Hona, B, Ito, T M, Liu, C-Y, Makela, M, Mammei, R R, Martin, J W, Melconian, D, Morris, C L, Pattie, Jr, R W, Pérez Galván, A, Pitt, M L, Plaster, B, Ramsey, J C, Rios, R, Russell, R, Saunders, A, Seestrom, S J, Sondheim, W E, Tatar, E, Vogelaar, R B, VornDick, B, Wrede, C, Yan, H, Young, A R

“…A precise measurement of the neutron decay β asymmetry A₀ has been carried out using polarized ultracold neutrons from the pulsed spallation ultracold neutron…”
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Solid deuterium surface degradation at ultracold neutron sources by Anghel, A., Bailey, T. L., Bison, G., Blau, B., Broussard, L. J., Clayton, S. M., Cude-Woods, C., Daum, M., Hawari, A., Hild, N., Huffman, P., Ito, T. M., Kirch, K., Korobkina, E., Lauss, B., Leung, K., Lutz, E. M., Makela, M., Medlin, G., Morris, C. L., Pattie, R. W., Ries, D., Saunders, A., Schmidt-Wellenburg, P., Talanov, V., Young, A. R., Wehring, B., White, C., Wohlmuther, M., Zsigmond, G.

“… Solid deuterium (sD 2 is used as an efficient converter to produce ultracold neutrons (UCN). It is known that the sD 2 must be sufficiently cold, of high…”
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Demonstration of sub-micron UCN position resolution using room-temperature CMOS sensor by Lin, S., Baldwin, J.K., Blatnik, M., Clayton, S.M., Cude-Woods, C., Currie, S.A., Filippone, B., Fries, E.M., Geltenbort, P., Holley, A.T., Li, W., Liu, C.-Y., Makela, M., Morris, C.L., Musedinovic, R., O’Shaughnessy, C., Pattie, R.W., Salvat, D.J., Saunders, A., Sharapov, E.I., Singh, M., Sun, X., Tang, Z., Uhrich, W., Wei, W., Wolfe, B., Young, A.R., Wang, Z.

“…High spatial resolution of ultracold neutron (UCN) measurement is of growing interest to UCN experiments such as UCN spectrometers, UCN polarimeters, quantum…”
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Measurement of the Half-Life of the T = 1 2 Mirror Decay of Ne 19 and its Implication on Physics Beyond the Standard Model by Broussard, L. J., Back, H. O., Boswell, M. S., Crowell, A. S., Dendooven, P., Giri, G. S., Howell, C. R., Kidd, M. F., Jungmann, K., Kruithof, W. L., Mol, A., Onderwater, C. J. G., Pattie, R. W., Shidling, P. D., Sohani, M., van der Hoek, D. J., Rogachevskiy, A., Traykov, E., Versolato, O. O., Willmann, L., Wilschut, H. W., Young, A. R.

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Projection imaging with ultracold neutrons by Kuk, K., Cude-Woods, C., Chavez, C.R., Choi, J.H., Estrada, J., Hoffbauer, M., Holland, S.E., Makela, M., Morris, C.L., Ramberg, E., Adamek, E.R., Bailey, T., Blatnik, M., Broussard, L.J., Brown, M.A.-P., Callahan, N.B., Clayton, S.M., Currie, S., Filippone, B.W., Fries, E.M., Geltenbort, P., Gonzalez, F., Hassan, M.T., Hayen, L., Hickerson, K.P., Holley, A.T., Ito, T.M., Liu, C.-Y., Merkel, P., Musedinovic, R., O’Shaughnessy, C., Pattie, R.W., Plaster, B., Salvat, D.J., Saunders, A., Sharapov, E.I., Sun, X., Tang, Z., Wei, W., Wexler, J.W., Young, A.R., Wang, Zhehui

“…Ultracold neutron (UCN) projection imaging is demonstrated using a boron-coated back-illuminated CCD camera and the Los Alamos UCN source. Each neutron is…”
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A multilayer surface detector for ultracold neutrons by Wang, Zhehui, Hoffbauer, M.A., Morris, C.L., Callahan, N.B., Adamek, E.R., Bacon, J.D., Blatnik, M., Brandt, A.E., Broussard, L.J., Clayton, S.M., Cude-Woods, C., Currie, S., Dees, E.B., Ding, X., Gao, J., Gray, F.E., Hickerson, K.P., Holley, A.T., Ito, T.M., Liu, C.-Y., Makela, M., Ramsey, J.C., Pattie, R.W., Salvat, D.J., Saunders, A., Schmidt, D.W., Schulze, R.K., Seestrom, S.J., Sharapov, E.I., Sprow, A., Tang, Z., Wei, W., Wexler, J., Womack, T.L., Young, A.R., Zeck, B.A.

“…A multilayer surface detector for ultracold neutrons (UCNs) is described. The top 10B layer is exposed to vacuum and directly captures UCNs. The ZnS:Ag layer…”
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Measurement of spin-flip probabilities for ultracold neutrons interacting with nickel phosphorus coated surfaces by Tang, Z., Adamek, E.R., Brandt, A., Callahan, N.B., Clayton, S.M., Currie, S.A., Ito, T.M., Makela, M., Masuda, Y., Morris, C.L., Pattie, R.W., Ramsey, J.C., Salvat, D.J., Saunders, A., Young, A.R.

“…We report a measurement of the spin-flip probabilities for ultracold neutrons interacting with surfaces coated with nickel phosphorus. For 50μm thick nickel…”
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Preparation of 114m In low energy conversion electron sources by Wrede, C, Filippone, B W, Garcia, A, Harper, G C, Lassell, S, Liu, J, Mendenhall, M P, Palmer, ASC, Pattie, R W, Will, DI, Young, A R

“…Highlights ao Controlled ion implantation of In-113 into thin Al substrate. ao Production of In-114m (half life=50 days) by neutron irradiation. ao Use of…”
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Sealed drift tube cosmic ray veto counters by Rios, R., Tatar, E., Bacon, J.D., Bowles, T.J., Hill, R., Green, J.A., Hogan, G.E., Ito, T.M., Makela, M., Morris, C.L., Mortenson, R., Pasukanics, F.E., Ramsey, J., Saunders, A., Seestrom, S.J., Sondheim, W.E., Teasdale, W., Saltus, M., Back, H.O., Cottrell, C.R., Holley, A.T., Pattie, R.W., Young, A.R., Broussard, L.J., Filippone, B.W., Hickerson, K.P., Liu, J., Mendenhall, M.P., Plaster, B., Mammei, R.R., Pitt, M.L., Vogelaar, R.B., Martin, J.W.

“…We describe a simple drift tube counter that has been used as a cosmic ray veto for the UCNA experiment, a first-ever measurement of the neutron beta-asymmetry…”
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Demonstration of Sub-micron UCN Position Resolution using Room-temperature CMOS Sensor by Lin, S, Baldwin, J. K, Blatnik, M, Clayton, S. M, Cude-Woods, C, Currie, S. A, Filippone, B, Fries, E. M, Geltenbort, P, Holley, A. T, Li, W, Liu, C. Y, Makela, M, Morris, C. L, Musedinovic, R, O'Shaughnessy, C, Pattie, R. W, Salvat, D. J, Saunders, A, Sharapov, E. I, Singh, M, Sun, X, Tang, Z, Uhrich, W, Wei, W, Wolfe, B, Young, A. R, Wang, Z

“…High spatial resolution of ultracold neutron (UCN) measurement is of growing interest to UCN experiments such as UCN spectrometers, UCN polarimeters, quantum…”
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Neutron-antineutron oscillations: Theoretical status and experimental prospects by Phillips, D.G., Snow, W.M., Babu, K., Banerjee, S., Baxter, D.V., Berezhiani, Z., Bergevin, M., Bhattacharya, S., Brooijmans, G., Castellanos, L., Chen, M.-C., Coppola, C.E., Cowsik, R., Crabtree, J.A., Das, P., Dees, E.B., Dolgov, A., Ferguson, P.D., Frost, M., Gabriel, T., Gal, A., Gallmeier, F., Ganezer, K., Golubeva, E., Greene, G., Hartfiel, B., Hawari, A., Heilbronn, L., Johnson, C., Kamyshkov, Y., Kerbikov, B., Kitaguchi, M., Kopeliovich, B.Z., Kopeliovich, V.B., Kuzmin, V.A., Liu, C-Y., McGaughey, P., Mocko, M., Mohapatra, R., Mokhov, N., Muhrer, G., Mumm, H.P., Okun, L., Pattie, R.W., Quigg, C., Ramberg, E., Ray, A., Roy, A., Ruggles, A., Sarkar, U., Saunders, A., Serebrov, A.P., Shimizu, H.M., Shrock, R., Sikdar, A.K., Sjue, S., Striganov, S., Townsend, L.W., Tschirhart, R., Vainshtein, A., Van Kooten, R., Wang, Z., Young, A.R.

“…The observation of neutrons turning into antineutrons would constitute a discovery of fundamental importance for particle physics and cosmology. Observing the…”
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Improved Neutron Lifetime Measurement with UCN τ by Gonzalez, F. M., Fries, E. M., Cude-Woods, C., Bailey, T., Blatnik, M., Broussard, L. J., Callahan, N. B., Choi, J. H., Clayton, S. M., Currie, S. A., Dawid, M., Dees, E. B., Filippone, B. W., Fox, W., Geltenbort, P., George, E., Hayen, L., Hickerson, K. P., Hoffbauer, M. A., Hoffman, K., Holley, A. T., Ito, T. M., Komives, A., Liu, C.-Y., Makela, M., Morris, C. L., Musedinovic, R., O’Shaughnessy, C., Pattie, R. W., Ramsey, J., Salvat, D. J., Saunders, A., Sharapov, E. I., Slutsky, S., Su, V., Sun, X., Swank, C., Tang, Z., Uhrich, W., Vanderwerp, J., Walstrom, P., Wang, Z., Wei, W., Young, A. R.

“…We report an improved measurement of the free neutron lifetime τn using the UCN τ apparatus at the Los Alamos Neutron Science Center. We count a total of…”
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Ultracold Neutron Properties of the Eljen-299-02D deuterated scintillator by Tang, Z, Watkins, E. B, Clayton, S. M, Currie, S. A, Fellers, D. E, Hassan, Md. T, Hooks, D. E, Ito, T. M, Lawrence, S. K, MacDonald, S. W. T, Makela, M, Morris, C. L, Neukirch, L. P, Saunders, A, O'Shaughnessy, C. M, Cude-Woods, C, Choi, J. H, Young, A. R, Zeck, B. A, Gonzalez, F, Liu, C. Y, Floyd, N. C, Hickerson, K. P, Holley, A. T, Johnson, B. A, Lambert, J. C, Pattie, R. W

“…In this paper we report studies of the Fermi potential and loss per bounce of ultracold neutron (UCN) on a deuterated scintillator (Eljen-299-02D). These UCN…”
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Solid deuterium surface degradation at ultracold neutron sources by Anghel, A, Bailey, T. L, Bison, G, Blau, B, Broussard, L. J, Clayton, S. M, Cude-Woods, C, Daum, M, Hawari, A, Hild, N, Huffman, P, Ito, T. M, Kirch, K, Korobkina, E, Lauss, B, Leung, K, Lutz, E. M, Makela, M, Medlin, G, Morris, C. L, Pattie, R. W, Ries, D, Saunders, A, Schmidt-Wellenburg, P, Talanov, V, Young, A. R, Wehring, B, White, C, Wohlmuther, M, Zsigmond, G

“…Solid deuterium (sD_2) is used as an efficient converter to produce ultracold neutrons (UCN). It is known that the sD_2 must be sufficiently cold, of high…”
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Fill and dump measurement of the neutron lifetime using an asymmetric magneto-gravitational trap by Cude-Woods, C, Gonzalez, F. M, Fries, E. M, Bailey, T, Blatnik, M, Callahan, N. B, Choi, J. H, Clayton, S. M, Currie, S. A, Dawid, M, Filippone, B. W, Fox, W, Geltenbort, P, George, E, Hayen, L, Hickerson, K. P, Hoffbauer, M. A, Hoffman, K, Holley, A. T, Ito, T. M, Komives, A, Liu, C. -Y, Makela, M, Morris, C. L, Musedinovic, R, O'Shaughnessy, C, Pattie,Jr, R. W, Ramsey, J, Salvat, D. J, Saunders, A, Sharapov, 5 E. I, Slutsky, S, Su, V, Sun, X, Swank, C, Tang, Z, Uhrich, W, Vanderwerp, J, Walstrom, P, Wang, Z, Wei, W, Young, A. R

“…The past two decades have yielded several new measurements and reanalyses of older measurements of the neutron lifetime. These have led to a 4.4 standard…”
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A next-generation inverse-geometry spallation-driven ultracold neutron source by Leung, K. K. H, Muhrer, G, Hügle, T, Ito, T. M, Lutz, E. M, Makela, M, Morris, C. L, Pattie,Jr, R. W, Saunders, A, Young, A. R

“…The physics model of a next-generation spallation-driven high-current ultracold neutron (UCN) source capable of delivering an extracted UCN rate of around…”
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Evaluation of commercial nickel–phosphorus coating for ultracold neutron guides using a pinhole bottling method by Pattie, R.W., Adamek, E.R., Brenner, T., Brandt, A., Broussard, L.J., Callahan, N.B., Clayton, S.M., Cude-Woods, C., Currie, S.A., Geltenbort, P., Ito, T.M., Lauer, T., Liu, C.Y., Majewski, J., Makela, M., Masuda, Y., Morris, C.L., Ramsey, J.C., Salvat, D.J., Saunders, A., Schroffenegger, J., Tang, Z., Wei, W., Wang, Z., Watkins, E., Young, A.R., Zeck, B.A.

“…We report on the evaluation of commercial electroless nickel phosphorus (NiP) coatings for ultracold neutron (UCN) transport and storage. The material…”
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Detection system for neutron β decay correlations in the UCNB and Nab experiments by Broussard, L.J., Zeck, B.A., Adamek, E.R., Baeßler, S., Birge, N., Blatnik, M., Bowman, J.D., Brandt, A.E., Brown, M., Burkhart, J., Callahan, N.B., Clayton, S.M., Crawford, C., Cude-Woods, C., Currie, S., Dees, E.B., Ding, X., Fomin, N., Frlez, E., Fry, J., Gray, F.E., Hasan, S., Hickerson, K.P., Hoagland, J., Holley, A.T., Ito, T.M., Klein, A., Li, H., Liu, C.-Y., Makela, M.F., McGaughey, P.L., Mirabal-Martinez, J., Morris, C.L., Ortiz, J.D., Pattie, R.W., Penttilä, S.I., Plaster, B., Počanić, D., Ramsey, J.C., Salas-Bacci, A., Salvat, D.J., Saunders, A., Seestrom, S.J., Sjue, S.K.L., Sprow, A.P., Tang, Z., Vogelaar, R.B., Vorndick, B., Wang, Z., Wei, W., Wexler, J., Wilburn, W.S., Womack, T.L., Young, A.R.

“…We describe a detection system designed for precise measurements of angular correlations in neutron β decay. The system is based on thick, large area, highly…”
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