Bulletin of the American Physical Society
2008 Annual Meeting of the Division of Nuclear Physics
Volume 53, Number 12
Thursday–Sunday, October 23–26, 2008; Oakland, California
Session CA: Intersections of Nuclear Physics with Other Fields |
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Chair: Jim Thomas, Lawrence Berkeley National Laboratory Room: Simmons Ballroom 2-3 |
Friday, October 24, 2008 10:30AM - 11:06AM |
CA.00001: Neutrinos from Reactors, the Earth and the Sun Invited Speaker: When Ray Davis first proposed the Homestake experiment, its primary mission was to study the Sun by detecting the neutrinos from solar fusion reactions. He probably did not expect that the neutrino deficit he detected would initiate several experiments that culminated in the discovery of neutrino oscillation. Although the central focus of current non-accelerator neutrino experiments is still the study of neutrino properties, we are moving back to using neutrinos as probes to investigate the processes that emit them in the first place. A number of new experiments will use neutrinos to examine the reactions inside the Sun. Some of these experiments will also measure anti-neutrinos from the decay of uranium and thorium in the Earth's crust and mantle, possibly providing information on the radiogenic contribution to the Earth's heat balance. Other detectors focus on reactor neutrino measurements for nuclear non-proliferation purposes. In this talk I will give a survey of current and upcoming experiments that look at neutrinos from these different sources. [Preview Abstract] |
Friday, October 24, 2008 11:06AM - 11:42AM |
CA.00002: Cosmic probes of the physics of dark matter and dark energy Invited Speaker: Starting around 2014, data from the Large Synoptic Survey Telescope (LSST) will be analyzed for a wide range of phenomena. The nature of dark matter can be constrained by measuring the scales on which it clumps. The nature of dark energy can be constrained by measuring the time evolution of cosmic dark matter structures and through measurements of the distribution of galaxies and the cosmic ``shear'' of their apparent shapes. A sample of three billion galaxies will enable maps of dark matter and several independent cross-checking probes of the nature of dark energy. These and other probes of dark energy involving the deep wide-area survey will be described. By separately tracing the development of mass structure and rate of expansion of the universe, these data will address the physics of dark matter and dark energy, the possible existence of modified gravity on large scales, the neutrino mass, and possible self interaction of dark matter particles. Images of dark matter from our current survey will be shown, and the status of the LSST project will be reviewed. [Preview Abstract] |
Friday, October 24, 2008 11:42AM - 12:18PM |
CA.00003: New Capability for Nuclear Physics and HED Sciences Invited Speaker: NIF is within a year from completion and conducting experiments in inertial confinement fusion (ICF), stockpile stewardship, high energy density (HED) science and nuclear physics. NIF's 192 beams will produce 1.8 MJ at 351 nm, 60 times more than the largest previous lasers. NIF will attempt to demonstrate ICF, by which more fusion energy is released from its $^{2}$H-$^{3}$H target than the NIF laser uses to compress and heat it. NIF's three missions will study matter at extreme conditions: temperatures up to 10$^{8}$K, densities to 1000 g cm$^{-3}$, and pressures to 10$^{16}$ Pascals. In fusion events, NIF will produce a neutron density up to 10$^{21}$ cm$^{-3}$. These conditions occur only in the interiors of stars, in thermonuclear burn, and in supernovae that signal the end of massive stars' lives. NIF's experiments will study the parameter space of ICF as well as experiments in several HED science subfields. NIF facility time and resources will be allocated via a peer review process to be overseen by the NIF user office. This work performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344. [Preview Abstract] |
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