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Your search keyword '"Geltenbort, P"' showing total 18 results
Start Over Author "Geltenbort, P" Journal physics letters b
18 results on '"Geltenbort, P"'

1. Improved measurement of the neutron absorption cross section for very low velocities

Author

J. Schroffenegger, P. Fierlinger, A. Hollering, P. Geltenbort, T. Lauer, H. Rauch, and T. Zechlau

Subjects
Neutron transport: diffusion and moderation, Protons and neutrons, Physics, QC1-999
Abstract

The absorption cross section of natural Gd and isotopic enriched 157Gd for ultra-cold neutrons (UCN) as a function of the velocity has been measured within a time-of-flight-experiment. Particular attention is paid to small velocities in the region of a few m/s. This is intended to determine the validity of the 1/v-law governing absorption cross sections in this region and the resulting divergence at v=0. The experiment does not show any significant violation of 1/v for v>3 m/s.

Published
2016
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2. A measurement of the neutron lifetime using the method of storage of ultracold neutrons and detection of inelastically up-scattered neutrons

Author

S. Arzumanov, L. Bondarenko, S. Chernyavsky, P. Geltenbort, V. Morozov, V.V. Nesvizhevsky, Yu. Panin, and A. Strepetov

Subjects
Physics, QC1-999
Abstract

We present estimations of systematic corrections and results of their experimental studies for our neutron lifetime experiment carried out in 2008–2010 at ILL. Taking into account these systematic corrections, we reduce the data of three independent sets of measurements (obtained during period 2008–2010) performed with different energy spectra of ultracold neutrons (UCNs) at different trap temperatures to the mean neutron lifetime value equal to 880.2(1.2) s.

Published
2015
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3. A magnetic trap for high-field seeking neutron spin states

Author

Th. Brenner, S. Chesnevskaya, P. Fierlinger, P. Geltenbort, E. Gutsmiedl, T. Lauer, K. Rezai, J. Rothe, T. Zechlau, and R. Zou

Subjects
Physics, QC1-999
Abstract

A first experimental demonstration of a new type of magnetic trap for ultra-cold neutrons is presented. High-field seeking spin-states are trapped in a potential formed by the magnetic field of a straight wire and a repulsive coating on the wire surface. Life-times of the trapped neutrons of 60 s could be observed. This configuration can in principle be used to form bound states of the wave function on the surface of the wire to probe new forces at short distances. Further applications include the use as a guide and selector for perfectly polarized neutrons.

Published
2015
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4. A measurement of the neutron to 199Hg magnetic moment ratio

Author

S. Afach, C.A. Baker, G. Ban, G. Bison, K. Bodek, M. Burghoff, Z. Chowdhuri, M. Daum, M. Fertl, B. Franke, P. Geltenbort, K. Green, M.G.D. van der Grinten, Z. Grujic, P.G. Harris, W. Heil, V. Hélaine, R. Henneck, M. Horras, P. Iaydjiev, S.N. Ivanov, M. Kasprzak, Y. Kermaïdic, K. Kirch, A. Knecht, H.-C. Koch, J. Krempel, M. Kuźniak, B. Lauss, T. Lefort, Y. Lemière, A. Mtchedlishvili, O. Naviliat-Cuncic, J.M. Pendlebury, M. Perkowski, E. Pierre, F.M. Piegsa, G. Pignol, P.N. Prashanth, G. Quéméner, D. Rebreyend, D. Ries, S. Roccia, P. Schmidt-Wellenburg, A. Schnabel, N. Severijns, D. Shiers, K.F. Smith, J. Voigt, A. Weis, G. Wyszynski, J. Zejma, J. Zenner, and G. Zsigmond

Subjects
Physics, QC1-999
Abstract

The neutron gyromagnetic ratio has been measured relative to that of the 199Hg atom with an uncertainty of 0.8 ppm. We employed an apparatus where ultracold neutrons and mercury atoms are stored in the same volume and report the result γn/γHg=3.8424574(30). Keywords: Ultracold neutrons, Mercury atoms, Magnetic moment, Gyromagnetic ratio

Published
2014
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8. A measurement of the neutron to 199 Hg magnetic moment ratio

Author

Afach, S., primary, Baker, C.A., additional, Ban, G., additional, Bison, G., additional, Bodek, K., additional, Burghoff, M., additional, Chowdhuri, Z., additional, Daum, M., additional, Fertl, M., additional, Franke, B., additional, Geltenbort, P., additional, Green, K., additional, van der Grinten, M.G.D., additional, Grujic, Z., additional, Harris, P.G., additional, Heil, W., additional, Hélaine, V., additional, Henneck, R., additional, Horras, M., additional, Iaydjiev, P., additional, Ivanov, S.N., additional, Kasprzak, M., additional, Kermaïdic, Y., additional, Kirch, K., additional, Knecht, A., additional, Koch, H.-C., additional, Krempel, J., additional, Kuźniak, M., additional, Lauss, B., additional, Lefort, T., additional, Lemière, Y., additional, Mtchedlishvili, A., additional, Naviliat-Cuncic, O., additional, Pendlebury, J.M., additional, Perkowski, M., additional, Pierre, E., additional, Piegsa, F.M., additional, Pignol, G., additional, Prashanth, P.N., additional, Quéméner, G., additional, Rebreyend, D., additional, Ries, D., additional, Roccia, S., additional, Schmidt-Wellenburg, P., additional, Schnabel, A., additional, Severijns, N., additional, Shiers, D., additional, Smith, K.F., additional, Voigt, J., additional, Weis, A., additional, Wyszynski, G., additional, Zejma, J., additional, Zenner, J., additional, and Zsigmond, G., additional

Published
2014
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9. First observation of trapped high-field seeking ultracold neutron spin states

Author

Daum, M., primary, Fierlinger, P., additional, Franke, B., additional, Geltenbort, P., additional, Goeltl, L., additional, Gutsmiedl, E., additional, Karch, J., additional, Kessler, G., additional, Kirch, K., additional, Koch, H.-C., additional, Kraft, A., additional, Lauer, T., additional, Lauss, B., additional, Pierre, E., additional, Pignol, G., additional, Reggiani, D., additional, Schmidt-Wellenburg, P., additional, Sobolev, Yu., additional, Zechlau, T., additional, and Zsigmond, G., additional

Published
2011
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11. Experimental search for neutron–mirror neutron oscillations using storage of ultracold neutrons

Author

Serebrov, A.P., primary, Aleksandrov, E.B., additional, Dovator, N.A., additional, Dmitriev, S.P., additional, Fomin, A.K., additional, Geltenbort, P., additional, Kharitonov, A.G., additional, Krasnoschekova, I.A., additional, Lasakov, M.S., additional, Murashkin, A.N., additional, Shmelev, G.E., additional, Varlamov, V.E., additional, Vassiljev, A.V., additional, Zherebtsov, O.M., additional, and Zimmer, O., additional

Published
2008
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12. Diamondlike carbon can replace beryllium in physics with ultracold neutrons

Author

Atchison, F., primary, Blau, B., additional, Daum, M., additional, Fierlinger, P., additional, Foelske, A., additional, Geltenbort, P., additional, Gupta, M., additional, Henneck, R., additional, Heule, S., additional, Kasprzak, M., additional, Kuźniak, M., additional, Kirch, K., additional, Meier, M., additional, Pichlmaier, A., additional, Plonka, Ch., additional, Reiser, R., additional, Theiler, B., additional, Zimmer, O., additional, and Zsigmond, G., additional

Published
2006
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15. Demonstration of a solid deuterium source of ultra-cold neutrons

Author

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

Published
2004
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18. A measurement of the neutron to 199Hg magnetic moment ratio.

Author

Afach, S., Baker, C.A., Ban, G., Bison, G., Bodek, K., Burghoff, M., Chowdhuri, Z., Daum, M., Fertl, M., Franke, B., Geltenbort, P., Green, K., van der Grinten, M.G.D., Grujic, Z., Harris, P.G., Heil, W., Hélaine, V., Henneck, R., Horras, M., and Iaydjiev, P.

Subjects
*NEUTRON measurement, *MAGNETIC moments, *MERCURY (Planet), *GYROMAGNETIC ratio, *RELATIVITY (Physics), *ATOMIC physics
Abstract

The neutron gyromagnetic ratio has been measured relative to that of the 199 Hg atom with an uncertainty of 0.8 ppm. We employed an apparatus where ultracold neutrons and mercury atoms are stored in the same volume and report the result γ n / γ Hg = 3.8424574 ( 30 ) . [ABSTRACT FROM AUTHOR]

Published
2014
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