Browsing by Author "Clayton, S."
Now showing 1 - 3 of 3
Results Per Page
Sort Options
- Determination of the Axial-Vector Weak Coupling Constant with Ultracold NeutronsLiu, J.; Mendenhall, M. P.; Holley, A. T.; Back, H. O.; Bowles, T. J.; Broussard, L. J.; Carr, Rachel E.; Clayton, S.; Currie, S.; Filippone, B. W.; Garcia, 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, R. W.; Galvan, A. P.; Pitt, M. L.; Plaster, B.; Ramsey, J. C.; Rios, R.; Russell, R.; Saunders, A.; Seestrom, S. J.; Sondheim, W. E.; Tatar, E.; Vogelaar, R. Bruce; VornDick, B.; Wrede, C.; Yan, H.; Young, A. R.; Ucna Collaboration (American Physical Society, 2010-10-29)A precise measurement of the neutron decay beta asymmetry A(0) has been carried out using polarized ultracold neutrons from the pulsed spallation ultracold neutron source at the Los Alamos Neutron Science Center. Combining data obtained in 2008 and 2009, we report A(0) = -0.119 66 +/- 0.000 89(-0.001 40)(+0.001 23), from which we determine the ratio of the axial- vector to vector weak coupling of the nucleon gA/gV = -1.275 90(-0.004 45)(+0.004 09).
- Measurement of the neutron beta-asymmetry parameter A(0) with ultracold neutronsPlaster, B.; Rios, R.; Back, H. O.; Bowles, T. J.; Broussard, L. J.; Carr, Rachel E.; Clayton, S.; Currie, S.; Filippone, B. W.; Garcia, A.; Geltenbort, P.; Hickerson, K. P.; Hoagland, J.; Hogan, G. E.; Hona, B.; Holley, A. T.; Ito, T. M.; Liu, C. Y.; Liu, J.; Makela, M.; Mammei, R. R.; Martin, J. W.; Melconian, D.; Mendenhall, M. P.; Morris, C. L.; Mortensen, R.; Pattie, R. W.; Galvan, A. P.; Pitt, M. L.; Ramsey, J. C.; Russell, R.; Saunders, A.; Schmid, R.; Seestrom, S. J.; Sjue, S.; Sondheim, W. E.; Tatar, E.; Tipton, B.; Vogelaar, R. Bruce; VornDick, B.; Wrede, C.; Xu, Y. P.; Yan, H.; Young, A. R.; Yuan, J.; Ucna Collaboration (American Physical Society, 2012-11-12)We present a detailed report of a measurement of the neutron beta-asymmetry parameter A(0), the parity-violating angular correlation between the neutron spin and the decay electron momentum, performed with polarized ultracold neutrons (UCN). UCN were extracted from a pulsed spallation solid deuterium source and polarized via transport through a 7-T magnetic field. The polarized UCN were then transported through an adiabatic-fast-passage spin-flipper field region, prior to storage in a cylindrical decay volume situated within a 1-T 2 x 2 pi solenoidal spectrometer. The asymmetry was extracted from measurements of the decay electrons in multiwire proportional chamber and plastic scintillator detector packages located on both ends of the spectrometer. From an analysis of data acquired during runs in 2008 and 2009, we report A(0) = -0.11966 +/- 0.00089(-0.00140)(+0.00123), from lambda = g(A)/g(V) = -1.27590 +/- 0.00239(-0.00377)(+0.00331). Complete details of the analysis are presented.
- Psychological science, conservation, and environmental sustainabilityClayton, S.; Litchfield, C.; Geller, E. Scott (Ecological Society of America, 2013-09)Because environmental degradation has the potential to negatively affect mental and social well-being, environmental sustainability is highly relevant to psychologists, who have a tradition of interventions designed to change behavior. Although many psychologists are already using psychological knowledge and tools to protect environmental resources, their efforts are neither widely known nor extensively utilized in applied conservation settings. Here, we describe some barriers to effective conservation interventions adopted by psychologists and conservation professionals alike, and provide suggestions to both disciplines for more productive engagement. We also present an illustrative example of psychological science applied to promote environmental conservation in a zoological park setting. Our aim is to raise awareness of the possibilities for such collaboration and to urge conservation professionals and psychologists to work together in order to proactively address pressing environmental challenges.