31,479 research outputs found
Cooper pair correlations and energetic knock-out reactions
Two-nucleon removal (or knock-out) reactions at intermediate energies are a
developing tool for both nuclear spectroscopy and for the study of certain
nucleon correlations in very exotic and some stable nuclei. We present an
overview of these reactions with specific emphasis on the nature of the
two-nucleon correlations that can be probed. We outline future possibilities
and tests needed to fully establish these sensitivities.Comment: 12 pages, 3 figures: Contribution to the Volume 50 years of Nuclear
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A complete distribution of redshifts for sub-millimetre galaxies in the SCUBA-2 Cosmology Legacy Survey UDS field
This is a pre-copyedited, author-produced PDF of an article accepted for publication in Monthly Notices of the Royal Astronomical Society following peer review. Available online at https://doi.org/10.1093/mnras/stx1689. © 2017 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.Sub-milllimetre galaxies (SMGs) are some of the most luminous star-forming galaxies in the Universe, however their properties remain hard to determine due to the difficulty of identifying their optical\slash near-infrared counterparts. One of the key steps to determining the nature of SMGs is measuring a redshift distribution representative of the whole population. We do this by applying statistical techniques to a sample of 761 850m sources from the SCUBA-2 Cosmology Legacy Survey observations of the UKIDSS Ultra-Deep Survey (UDS) Field. We detect excess galaxies around per cent of the 850m positions in the deep UDS catalogue, giving us the first 850m selected sample to have virtually complete optical\slash near-infrared redshift information. Under the reasonable assumption that the redshifts of the excess galaxies are representative of the SMGs themselves, we derive a median SMG redshift of , with 68 per cent of SMGs residing between $1.07Peer reviewedFinal Accepted Versio
A study of the usefulness of Skylab EREP data for earth resources studies in Australia
The author has identified the following significant results. The stereo cover of the Skylab photos, their clarity, and their resolution put them far above the ERTS imagery not only in distinguishing between patterns but also in determining the nature of the country. The following land systems: (1) plains with sand dunes; (2) ridges, foothills, and alluvial plains; (3) dune-covered country with stony hills; and (4) alluvial plains were indistinguishable on the ERTS imagery. However, the same places are clearly distinguishable on the Skylab photos, together with the character of the dunes (parallel, reticulate, or irregular)
NASA contributions to - Cardiovascular monitoring
NASA contributions to cardiovasular monitorin
A study of the usefulness of Skylab EREP data for earth resources studies in Australia
There are no author-identified significant results in this report
Nuclear quadrupole resonances in compact vapor cells: the crossover from the NMR to the NQR interaction regimes
We present the first experimental study that maps the transformation of
nuclear quadrupole resonances from the pure nuclear quadrupole regime to the
quadrupole-perturbed Zeeman regime. The transformation presents an interesting
quantum-mechanical problem, since the quantization axis changes from being
aligned along the axis of the electric-field gradient tensor to being aligned
along the magnetic field. We achieve large nuclear quadrupole shifts for I =
3/2 131-Xe by using a 1 mm^3 cubic cell with walls of different materials. When
the magnetic and quadrupolar interactions are of comparable size, perturbation
theory is not suitable for calculating the transition energies. Rather than use
perturbation theory, we compare our data to theoretical calculations using a
Liouvillian approach and find excellent agreement.Comment: 4 pages, 4 figure
Solar Modulation of the Galactic Helium Spectrum Above 30 Mev Per Nucleon
Time measurements of differential energy spectra and flux of primary helium nuclei by use of charged particle telescope
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