Zobrazeno 1 - 10
of 16
pro vyhledávání: '"K. K. H. Leung"'
Autor:
X. Li, M. W. Ahmed, A. Banu, C. Bartram, B. Crowe, E. J. Downie, M. Emamian, G. Feldman, H. Gao, D. Godagama, H. W. Grießhammer, C. R. Howell, H. J. Karwowski, D. P. Kendellen, M. A. Kovash, K. K. H. Leung, D. M. Markoff, J. A. McGovern, S. Mikhailov, R. E. Pywell, M. H. Sikora, J. A. Silano, R. S. Sosa, M. C. Spraker, G. Swift, P. Wallace, H. R. Weller, C. S. Whisnant, Y. K. Wu, Z. W. Zhao
Publikováno v:
Li, X, Ahmed, M W, Banu, A, Bartram, C, Crowe, B, Downie, E J, Emamian, M, Feldman, G, Gao, H, Godagama, D, Grießhammer, H W, Howell, C R, Karwowski, H J, Kendellen, D P, Kovash, M A, Leung, K K H, Markoff, D M, Mcgovern, J A, Mikhailov, S, Pywell, R E, Sikora, M H, Silano, J A, Sosa, R S, Spraker, M C, Swift, G, Wallace, P, Weller, H R, Whisnant, C S, Wu, Y K & Zhao, Z W 2022, ' Proton Compton Scattering from Linearly Polarized Gamma Rays ', Physical Review Letters, vol. 128, no. 13 . https://doi.org/10.1103/PhysRevLett.128.132502
Differential cross sections for Compton scattering from the proton have been measured at scattering angles of $55^\circ$, $90^\circ$, and $125^\circ$ in the laboratory frame using quasimonoenergetic linearly (circularly) polarized photon beams with a
Autor:
A. Banu, S.F. Mikhailov, D. M. Markoff, C. S. Whisnant, Musa Ahmed, Michael A. Kovash, C. Bartram, Hugon J Karwowski, P. Wallace, E. J. Downie, D. P. Kendellen, M. Emamian, Mark Spraker, R. S. Sosa, X. Li, G. Swift, Harald W. Grießhammer, Ying Wu, Haiyan Gao, D. Godagama, M. H. Sikora, C. R. Howell, Z. W. Zhao, R. E. Pywell, B. J. Crowe, K. K. H. Leung, Gerald Feldman, Jack Silano, H. R. Weller
Publikováno v:
Physical Review C. 101
Differential cross sections for elastic Compton scattering from $^4$He have been measured with high statistical precision at the High Intensity $\gamma$-ray Source at laboratory scattering angles of $55^\circ$, $90^\circ$, and $125^\circ$ using a qua
Autor:
Robert W. Pattie, Alexander Saunders, Albert Young, Christopher Morris, Mark Makela, E. M. Lutz, K. K. H. Leung, T. Hügle, Takeyasu M. Ito, G. Muhrer
The physics model of a next-generation spallation-driven high-current ultracold neutron (UCN) source capable of delivering an extracted UCN rate of around an-order-of-magnitude higher than the strongest proposed sources, and around three-orders-of-ma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::891e0bb490eda0b80c97727ebad53b50
http://arxiv.org/abs/1905.09459
http://arxiv.org/abs/1905.09459
Autor:
E. B. Dees, John Ramsey, Robert W. Pattie, D. J. Morley, Mark Makela, Jose Ortiz, B. A. Zeck, E. I. Sharapov, J. Wexler, S. J. Seestrom, Albert Young, Scott Currie, K. K. H. Leung, Zhehui Wang, C. Cude-Woods, Charles L. Morris, Evan R. Adamek, N. B. Callahan, S. M. Clayton, Peter Geltenbort, Leah Broussard, Alexander Saunders, Kevin Hickerson, Tanner L. Womack, Mark A. Hoffbauer, Takeyasu M. Ito, X. Ding, Wanchun Wei, Chen-Yu Liu, Z. Tang, Sky Sjue, A. T. Holley
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 830:36-43
Position-sensitive detection of ultracold neutrons (UCNs) is demonstrated using an imaging charge-coupled device (CCD) camera. A spatial resolution less than 15 $\mu$m has been achieved, which is equivalent to an UCN energy resolution below 2 pico-el
Autor:
R. J. Holt, Seppo Penttila, S. Baessler, David G. Haase, C. R. Gould, M. E. Hayden, Dipangkar Dutta, S. W. T. MacDonald, L. Barrón-Palos, E. Korobkina, R. P. Redwine, Jen-Chieh Peng, Marcus H. Mendenhall, J. Long, Z. Tang, Haiyan Gao, Steven Clayton, Ross Milner, Evgeni Tsentalovich, J. Kelsey, Robert Golub, E. Ihloff, C. Vidal, S. E. Williamson, Matthew Busch, A. T. Holley, George M. Seidel, A. Saftah, M. Behzadipour, B. W. Filippone, M. Makela, Ayman I. Hawari, I. Berkutov, C. Osthelder, C. Daurer, Ricardo Alarcon, W. Yao, A. Reid, M. Broering, C. Swank, P. R. Huffman, S. Slutsky, Musa Ahmed, J. Leggett, Liang Yang, John Ramsey, Yu. Efremenko, H. O. Meyer, M. Blatnik, R. Carr, James Maxwell, T. D. S. Stanislaus, Scott Currie, E. S. Smith, W. M. Snow, A. Lipman, Takeyasu M. Ito, N. S. Phan, A. Aleksandrova, Leah Broussard, C.-Y. Liu, X. Sun, Steve K. Lamoreaux, K. A. Dow, Nima Nouri, D. P. Kendellen, A. Matlashov, R. Dipert, L. M. Bartoszek, K. K. H. Leung, C. O'Shaughnessy, M. Karcz, C. B. Erickson, Yongsun Kim, Wanchun Wei, A. R. Young, S. K. Imam, J. Bessuille, Geoffrey Greene, R. Tavakoli Dinani, T. M. Rao, S. Sosothikul, Douglas H Beck, D. Hasell, Wolfgang Korsch, P. E. Mueller, I.F. Silvera, C. R. White, M. D. Cooper, Christopher Crawford, Nadia Fomin, W. E. Sondheim, Brad Plaster, V. Cianciolo
Publikováno v:
arXiv
© 2019 IOP Publishing Ltd and Sissa Medialab. A cryogenic apparatus is described that enables a new experiment, nEDM@SNS, with a major improvement in sensitivity compared to the existing limit in the search for a neutron Electric Dipole Moment (EDM)
Autor:
D. Ries, M. Daum, Christopher Morris, Takeyasu M. Ito, Georg Bison, K. K. H. Leung, C. Cude-Woods, Geza Zsigmond, Bernhard Lauss, B. Wehring, Michael Wohlmuther, S. M. Clayton, Philipp Schmidt-Wellenburg, P. R. Huffman, Mark Makela, Robert W. Pattie, Alexander Saunders, E. Korobkina, Vadim Talanov, T. Bailey, Leah Broussard, A. Anghel, E. M. Lutz, Nora Hild, Klaus Kirch, Ayman I. Hawari, G. Medlin, C. R. White, B. Blau, Albert Young
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 purity and mostly in its ortho-state in order to guarantee long lifetimes of UCN in the solid f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ca97d985c830b39add63abd66c67fafb
Publikováno v:
Physical Review C. 95
We analyze the spin flip loss for ultracold neutrons in magnetic bottles of the type used in experiments aiming at a precise measurement of the neutron lifetime, extending the one-dimensional field model used previously by Steyerl et al. [Phys. Rev.
Autor:
Scott Currie, John Ramsey, Haiyan Gao, Dipangkar Dutta, Jen-Chieh Peng, Y.J. Kim, A. Lipman, A. Matlashov, E. Ihloff, M. Blatnik, E. Korobkina, M. McCrea, P. R. Huffman, C. R. Gould, C. M. O'Shaughnessy, Brad Plaster, D. Hasell, T. Rao, Mark Makela, T. D. S. Stanislaus, Wanchun Wei, C. B. Erickson, S. Baeßler, Nima Nouri, M. E. Hayden, Liang Yang, M. Broering, Ayman I. Hawari, S. Sosothikul, Yu. Efremenko, S. E. Williamson, P. E. Mueller, L. M. Bartoszek, K. K. H. Leung, A. R. Young, L. Barrón-Palos, Seppo Penttila, J. Bessuille, Geoffrey Greene, Steve K. Lamoreaux, K. A. Dow, S. W. T. MacDonald, Leah Broussard, Douglas H Beck, M. Behzadipour, Ricardo Alarcon, W. Yao, S. Slutsky, Christopher Crawford, A. Aleksandrova, R. Tavakoli Dinani, David G. Haase, Evgeni Tsentalovich, R. J. Holt, Z. Tang, R. P. Redwine, J. Kelsey, Matthew Busch, E. Leggett, A. Saftah, Steven Clayton, Ross Milner, M. W. Ahmed, Nadia Fomin, C. Vidal, Wolfgang Korsch, V. Cianciolo, E. Smith, I.F. Silvera, C. R. White, Marcus H. Mendenhall, J. Long, R. Dipert, Robert Golub, A. T. Holley, C. Osthelder, R. Carr, W. M. Snow, George M. Seidel, B. W. Filippone, W. E. Sondheim, Takeyasu M. Ito, N. S. Phan, C. Daurer, M. D. Cooper, A. Reid, C. Swank, James Maxwell, X. Sun, Pinghan Chu, H. O. Meyer, C.-Y. Liu
Publikováno v:
INSPIRE-HEP
EPJ Web of Conferences, Vol 219, p 02005 (2019)
EPJ Web of Conferences, Vol 219, p 02005 (2019)
Novel experimental techniques are required to make the next big leap in neutron electric dipole moment experimental sensitivity, both in terms of statistics and systematic error control. The nEDM experiment at the Spallation Neutron Source (nEDM@SNS)
Publikováno v:
Phys.Rev.C
Phys.Rev.C, 2016, 94 (4), pp.045502. ⟨10.1103/PhysRevC.94.045502⟩
Physical Review C
Physical Review C, American Physical Society, 2016, 94 (4), pp.045502. ⟨10.1103/PhysRevC.94.045502⟩
Phys.Rev.C, 2016, 94 (4), pp.045502. 〈10.1103/PhysRevC.94.045502〉
Phys.Rev.C, 2016, 94 (4), pp.045502. ⟨10.1103/PhysRevC.94.045502⟩
Physical Review C
Physical Review C, American Physical Society, 2016, 94 (4), pp.045502. ⟨10.1103/PhysRevC.94.045502⟩
Phys.Rev.C, 2016, 94 (4), pp.045502. 〈10.1103/PhysRevC.94.045502〉
Ultracold neutron (UCN) storage measurements were made in a trap constructed from a 1.3 T Halbach Octupole PErmanent (HOPE) magnet array aligned vertically, using the TES-port of the PF2 source at the Institut Laue-Langevin. A mechanical UCN valve at
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::80b7210dd1ac2959f2c4609272b91645
https://hal.archives-ouvertes.fr/hal-01554296
https://hal.archives-ouvertes.fr/hal-01554296
Autor:
K. K. H. Leung, O. Zimmer
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 611:181-185
Current values of the neutron β -decay lifetime have come under scrutiny due to a large disagreement between recent precise measurements using trapping of ultra-cold neutrons (UCNs) in material bottles. These measurements involve extrapolation proce