Results 181 to 190 of about 20,226 (218)

Spallation sources for neutron scattering

Physics Today, 1982
Low-energy neutrons are particulary well suited to probe crystalline, glassy and biological materials. The de Broglie wavelength of a thermal neutron is of the same order as interatomic spacings, and its anomalously high cross section for scattering off hydrogen nuclei makes it an especially useful probe for hydrogenous substances. Furthermore, because
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Spallation neutron source saddle antenna H− ion source project

Review of Scientific Instruments, 2010
In this project we are developing an H− source which will synthesize the most important developments in the field of negative ion sources to provide high current, high brightness, good lifetime, high reliability, and high power efficiency. We describe two planned modifications to the present spallation neutron source external antenna source in order to
Vadim, Dudnikov, Rolland P, Johnson, Galina, Dudnikova, Martin, Stockli, Robert, Welton   +4 more
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Neutrinos at the Spallation Neutron Source

AIP Conference Proceedings, 2007
The Spallation Neutron Source at Oak Ridge will provide an intense source of neutrinos in the tens of MeV range, which nicely overlaps with the supernova neutrino energy range. I will describe the Neutrinos at the SNS (νSNS) program planned to exploit this high power, high quality source for studies of neutrino cross‐sections relevant for supernova ...
K. Scholberg, Geralyn P. Zeller, Jorge G. Morfin, Flavio Cavanna   +3 more
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Spallation neutron sources for neutron beam research

Contemporary Physics, 1978
Abstract The major components of a spallation neutron source for neutron beam research are: an accelerator to produce intense bursts of energetic particles such as protons of 800 MeV; a target of a heavy material thick enough to absorb the majority of the energy of bombarding particles; an assembly of moderators and reflectors to slow the neutrons ...
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Long-Pulse Spallation Source Neutronic Performance

Journal of Neutron Research, 1997
There are potential gains of about a factor of seven in the time-average neutron brightness for a coupled liquid H2 moderator compared to a decoupled one, and a factor of around five for a H20 moderator. However, these gains come at the expense of putting “tails” on the neutron pulses.
Gary J. Russell, Eric J. Pitcher, Phillip D. Ferguson, Bruce W. Patton   +3 more
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Neutron sensing at spallation neutron sources by SERS

Applied Surface Science
Neutron detectors are paramount in many applications from medical science to homeland security and aero-space. A miniaturized solid-state device based on a nanostructured-gold thin film grown by pulsed laser ablation under deposition-controlled conditions and functionalized with a monolayer of 4-mercaptophenyboronic acid (4-MPBA) was fabricated as a ...
Sebastiano Trusso, Giulia Festa, Claudia Scatigno, Giovanni Romanelli, Anna Piperno, Rosina Celeste Ponterio   +5 more
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Pulsed spallation neutron sources for slow neutron scattering

Nuclear Instruments and Methods, 1977
Abstract The role of pulsed spallation neutron sources for slow neutron spectroscopy is sketched. Various methods of neutron production, and some aspects of the spallation neutron production process are outlined. Accelerators for pulsed spallation neutron sources are discussed.
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Spallation Neutron Source Cryogenic Transfer Line

AIP Conference Proceedings, 2004
The Spallation Neutron Source is a state‐of‐the‐art neutron‐scattering facility presently being constructed in Oak Ridge, TN as a collaborative effort among six national laboratories. The ion beam generated in the high‐power particle‐accelerator system is accelerated to 1 GeV in the superconducting portion of the linac.
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Neutron scattering instrumentation at the Spallation Neutron Source

SPIE Proceedings, 2002
The Spallation Neutron Source (SNS) is an accelerator-based short-pulse neutron scattering facility designed to provide an order of magnitude more power than the most powerful existing facility of this type. The SNS is being constructed at Oak Ridge National Laboratory and is on schedule for completion in 2006.
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The continuous spallation neutron source SINQ

Neutron News, 2000
Abstract SINQ, at the Paul Scherrer Institut (PSI) in Villigen, Switzerland, is the first continuous spallation neutron source worldwide. The continuous flow of neutrons and the vertical target arrangement is responsible for an instrument suite characteristic of that installed at reactors.
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