Zobrazeno 1 - 10
of 38
pro vyhledávání: '"P. L. Walstrom"'
Autor:
Wisam Barkho, Nathan C. Carnes, Claire A. Kolaja, Xin M. Tu, Satbir K. Boparai, Sheila F. Castañeda, Beverly D. Sheppard, Jennifer L. Walstrom, Jennifer N. Belding, Rudolph P. Rull, the Millennium Cohort Study Team
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-12 (2024)
Abstract The Millennium Cohort Study is a longitudinal study which collects self-reported data from surveys to examine the long-term effects of military service. Participant nonresponse to follow-up surveys presents a potential threat to the validity
Externí odkaz:
https://doaj.org/article/49f6b37b04064e0c8118b4186a6adcf2
Autor:
Claire A. Kolaja, Jennifer N. Belding, Satbir K. Boparai, Sheila F. Castañeda, Toni Rose Geronimo-Hara, Teresa M. Powell, Xin M. Tu, Jennifer L. Walstrom, Beverly D. Sheppard, Rudolph P. Rull, for the Millennium Cohort Study Team
Publikováno v:
BMC Medical Research Methodology, Vol 23, Iss 1, Pp 1-17 (2023)
Abstract Background Patterns of survey response and the characteristics associated with response over time in longitudinal studies are important to discern for the development of tailored retention efforts aimed at minimizing response bias. The Mille
Externí odkaz:
https://doaj.org/article/ecae1a2c3271474cb54aa40e4b595640
Autor:
P. L. Walstrom
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 15, Iss 10, p 102401 (2012)
In general, generation of charged-particle transfer maps for conventional iron-pole-piece dipole magnets to third and higher order requires a model for the midplane field profile and its transverse derivatives (soft-edge model) to high order and nume
Externí odkaz:
https://doaj.org/article/3497dbc4bd2240488cdc80bc904f4b95
Autor:
M. A. Plum, D. H. Fitzgerald, J. Langenbrunner, R. J. Macek, F. E. Merrill, F. Neri, H. A. Thiessen, P. L. Walstrom, J. E. Griffin, K. Y. Ng, Z. B. Qian, D. Wildman, B. A. Prichard, Jr.
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 2, Iss 6, p 064201 (1999)
The inductance of the vacuum chamber of the Proton Storage Ring at Los Alamos National Laboratory was intentionally increased by the introduction of ferrite rings to counteract the longitudinal space-charge effect of the intense beam. The magnetic pe
Externí odkaz:
https://doaj.org/article/1977d251db10405685b9e5932af4dfcf
Autor:
W. Fox, A. R. Young, P. Geltenbort, E. I. Sharapov, P. L. Walstrom, Christopher Morris, R. Musedinovic, mi> τ, Zhehui Wang, S. Slutsky, B. W. Filippone, N. B. Callahan, Scott Currie, T. Bailey, Steven Clayton, J. Vanderwerp, L. Hayen, Kevin Hickerson, J. H. Choi, John Michael Ramsey, K. Hoffman, Wanchun Wei, F. Gonzalez, Mark A. Hoffbauer, Takeyasu M. Ito, A. T. Holley, Mark Makela, E. George, V. Su, D.J. Salvat, R. W. Pattie, Alexander Saunders, C. Cude-Woods, M. Blatnik, Christopher O'Shaughnessy, X. Sun, Eric Fries, Leah Broussard, C.-Y. Liu, W. Uhrich, mrow, E. B. Dees, C. Swank, A. Komives, Zhaowen Tang, M. Dawid
Publikováno v:
Phys.Rev.Lett.
Phys.Rev.Lett., 2021, 127 (16), pp.162501. ⟨10.1103/PhysRevLett.127.162501⟩
Phys.Rev.Lett., 2021, 127 (16), pp.162501. ⟨10.1103/PhysRevLett.127.162501⟩
We report an improved measurement of the free neutron lifetime $\tau_{n}$ using the UCN$\tau$ apparatus at the Los Alamos Neutron Science Center. We counted a total of approximately $38\times10^{6}$ surviving ultracold neutrons (UCN) after storing in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6fcde125f88c4c94021162aedd864523
https://doi.org/10.1103/physrevlett.127.162501
https://doi.org/10.1103/physrevlett.127.162501
Autor:
R.W. Pattiejr., S. Seestrom, X. Sun, C.R. Chavez, J.W. Wexler, E.M. Fries, M. Blatnik, Z. Tang, D. Dinger, Mark A. Hoffbauer, Takeyasu M. Ito, Scott Currie, Leah Broussard, D.G. Phillips, P. L. Walstrom, E. I. Sharapov, Christopher Morris, P. Merkel, Sky Sjue, F. Gonzalez, C. O'Shaughnessy, E.R. Adamek, Brad Plaster, A. R. Young, K. Kuk, Zhehui Wang, Kevin Hickerson, Alexander Saunders, Chen-Yu Liu, E. J. Ramberg, B. A. Zeck, D. J. Salvat, Wanchun Wei, B. Filippone, T. L. Womack, P. Geltenbort, C. Cude-Woods, Steven Clayton, K. Hoffman, T. Bailey, Mark Makela, E. George, A.T. Holley, X. Ding, V. Su, J. H. Choi, M. A. P. Brown, S. W. T. MacDonald, N. B. Callahan, J. Estrada
A new boron-coated CCD camera is described for direct detection of ultracold neutrons (UCN) through the capture reactions $^{10}$B (n,$\alpha$0$\gamma$)$^7$Li (6%) and $^{10}$B(n,$\alpha$1$\gamma$)$^7$Li (94%). The experiments, which extend earlier w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8cd434856aaeed9fb4a7463a00a97633
https://doi.org/10.2172/1497998
https://doi.org/10.2172/1497998
Autor:
R. W. Pattie, N. B. Callahan, C. Cude-Woods, E. R. Adamek, L. J. Broussard, S. M. Clayton, S. A. Currie, E. B. Dees, X. Ding, E. M. Engel, D. E. Fellers, W. Fox, P. Geltenbort, K. P. Hickerson, M. A. Hoffbauer, A. T. Holley, A. Komives, C.-Y. Liu, S. W. T. MacDonald, M. Makela, C. L. Morris, J. D. Ortiz, J. Ramsey, D. J. Salvat, A. Saunders, S. J. Seestrom, E. I. Sharapov, S. K. Sjue, Z. Tang, J. Vanderwerp, B. Vogelaar, P. L. Walstrom, Z. Wang, W. Wei, H. L. Weaver, J. W. Wexler, T. L. Womack, A. R. Young, B. A. Zeck
Publikováno v:
Science
Science, 2018, 360 (6389), pp.627-632. ⟨10.1126/science.aan8895⟩
Science, 2018, 360 (6389), pp.627-632. ⟨10.1126/science.aan8895⟩
How long does a neutron live? Unlike the proton, whose lifetime is longer than the age of the universe, a free neutron decays with a lifetime of about 15 minutes. Measuring the exact lifetime of neutrons is surprisingly tricky; putting them in a cont
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::39aa655ed5d3ec379ce9360dd04b23bd
https://hal.archives-ouvertes.fr/hal-01823340
https://hal.archives-ouvertes.fr/hal-01823340
Autor:
T. L. Womack, Leah Broussard, Mark A. Hoffbauer, Chen-Yu Liu, Robert W. Pattie, S. J. Seestrom, B. A. Zeck, N. B. Callahan, Scott Currie, Mark Makela, D. J. Morley, E. B. Dees, J. Medina, John Ramsey, Jonathon Wexler, Brad A. Slaughter, Steven Clayton, Dave Barlow, Kevin Hickerson, Walt Fox, J. Vanderwerp, C. Cude-Woods, Evan R. Adamek, Alexander Saunders, D. J. Salvat, Amy Roberts, E. I. Sharapov, Albert Young, Adam Holley, Zhehui Wang, M. Blatnik, P. L. Walstrom, Christopher Morris, Sky Sjue
We have followed up on our previous measurements of upscattering of ultracold neutrons (UCNs) from a series of gases by making measurements of total cross sections on the following gases hydrogen, ethane, methane, isobutene, n-butane, ethylene, water
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0e661d15b8b6d3d35597799d737c5c40
https://resolver.caltech.edu/CaltechAUTHORS:20170130-133127545
https://resolver.caltech.edu/CaltechAUTHORS:20170130-133127545
Autor:
C. L. Morris, E. R. Adamek, L. J. Broussard, N. B. Callahan, S. M. Clayton, C. Cude-Woods, S. A. Currie, X. Ding, W. Fox, K. P. Hickerson, M. A. Hoffbauer, A. T. Holley, A. Komives, C.-Y. Liu, M. Makela, R. W. Pattie, J. Ramsey, D. J. Salvat, A. Saunders, S. J. Seestrom, E. I. Sharapov, S. K. Sjue, Z. Tang, J. Vanderwerp, B. Vogelaar, P. L. Walstrom, Z. Wang, Wanchun Wei, J. W. Wexler, T. L. Womack, A. R. Young, B. A. Zeck
Publikováno v:
The Review of Scientific Instruments
In this paper, we describe a new method for measuring surviving neutrons in neutron lifetime measurements using bottled ultracold neutrons (UCN), which provides better characterization of systematic uncertainties and enables higher precision than pre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::88ba7a81a632e2e36aabcd75e72ae7c6
Autor:
Christopher Morris, Frank E. Merrill, John Perry, John W. Gibbs, Raspberry Simpson, J. J. Goett, Seth D. Imhoff, P. L. Walstrom, U. Wienands, D. Poulson, Carl Wilde, Levi P. Neukirch, Fesseha Mariam, T. Smith, Keith Jobe, Amy J. Clarke, Petr Volegov, Damien Tourret, C. Hast
Publikováno v:
Applied Physics Letters. 112:144103
Charged particle radiography with 800 MeV protons has been used for decades at LANL and developed around the world to study dynamic material properties. Recently, charged particle radiography has been demonstrated with the use of high-energy electron
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5949f92ebe8a0f2ffbf2d95f0ebe4f47
https://doi.org/10.1063/1.5011198
https://doi.org/10.1063/1.5011198