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Device that emits neutrons
A neutron source is any device that emits neutrons, irrespective of the mechanism used to produce the neutrons. Neutron sources are used in physics, engineering
Neutron_source
Neutron source used to start nuclear reactors
A startup neutron source is a neutron source used for stable and reliable initiation of nuclear chain reaction in nuclear reactors, when they are loaded
Startup_neutron_source
Subatomic particle with no charge
Dedicated neutron sources like neutron generators, research reactors and spallation sources produce free neutrons for use in irradiation and in neutron scattering
Neutron
English physics research facility
The ISIS Neutron and Muon Source is a pulsed neutron and muon source at the Rutherford Appleton Laboratory (RAL) of the Science and Technology Facilities
ISIS_Neutron_and_Muon_Source
Accelerator-based neutron source in Oak Ridge, Tennessee, US
Spallation Neutron Source (SNS) is an accelerator-based neutron source facility in the U.S. that provides the most intense pulsed neutron beams in the
Spallation_Neutron_Source
Source of neutrons from linear particle accelerators
Neutron generators are neutron source devices which contain compact linear particle accelerators and that produce neutrons by fusing isotopes of hydrogen
Neutron_generator
Kinetic energy of an unbound neutron
The neutron detection temperature, also called the neutron energy, indicates a free neutron's kinetic energy, usually given in electron volts. The term
Neutron_temperature
Neutron source under construction in Dongguan, China
The China Spallation Neutron Source is an accelerator-based neutron source, operated by the Institute of High Energy Physics, at Dongguan in Guangdong
China Spallation Neutron Source
China_Spallation_Neutron_Source
Intense Pulsed Neutron Source (IPNS) was a scientific user facility at Argonne National Laboratory for neutron scattering research. The IPNS was the world's
Intense_Pulsed_Neutron_Source
Study of motions and interactions of neutrons
Neutron transport (also known as neutronics) is the study of the motions and interactions of neutrons with materials. The neutron transport equation models
Neutron_transport
Technique to investigate atomic structures using neutron scattering
Neutron diffraction or elastic neutron scattering is the application of neutron scattering to the determination of the atomic and/or magnetic structure
Neutron_diffraction
Substance that slows down particles with no electric charge
of neutrons from the nucleus requires exceeding the binding energy of the neutron, which is typically 7-9 MeV for most isotopes. Neutron sources generate
Neutron_moderator
Ionizing radiation that presents as free neutrons
nuclear reactors or particle accelerators, including the Spallation Neutron Source. Neutron radiation was discovered from observing an alpha particle colliding
Neutron_radiation
Method used for determining the concentrations of elements in many materials
nuclei. The method is based on neutron activation and thus requires a neutron source. The sample is bombarded with neutrons, causing its constituent elements
Neutron_activation_analysis
Process of making an image with neutrons
Neutron imaging is the process of making an image with neutrons. The resulting image is based on the neutron attenuation properties of the imaged object
Neutron_imaging
The Chinese built Miniature Neutron Source reactor (MNSR) is a small and compact research reactor modeled on the Canadian HEU SLOWPOKE-2 design. The MNSR
Miniature neutron source reactor
Miniature_neutron_source_reactor
American nuclear radiation enthusiast (1976–2016)
never managed to build a functioning reactor, he did build a crude neutron source. In August 1994, Hahn's progress attracted the attention of local police
David_Hahn
Type of radioactive decay
Neutron emission is a mode of radioactive decay in which one or more neutrons are ejected from a nucleus. It occurs in the most neutron-rich/proton-deficient
Neutron_emission
Physical phenomenon
Neutron scattering is practiced at research reactors and spallation neutron sources that provide neutron radiation of varying intensities. Neutron diffraction
Neutron_scattering
Physical process
Source) or a combination of linac and synchrotron (e.g. ISIS neutron source) or a cyclotron (e.g. SINQ (PSI)). As an example, the ISIS neutron source
Spallation
Collapsed core of a massive star
A neutron star is the gravitationally collapsed core of a massive supergiant star. It results from the supernova explosion of a massive star—combined
Neutron_star
Atomic nuclear process
Neutron capture is a nuclear reaction in which an atomic nucleus and one or more neutrons collide and merge to form a heavier nucleus. Since neutrons
Neutron_capture
Neutron detection is the effective detection of neutrons entering a well-positioned detector. There are two key aspects to effective neutron detection:
Neutron_detection
Nonsurgical treatment for locally invasive malignant tumors
epithermal neutrons, the sources of which in the past have been nuclear reactors and now are accelerators that produce higher-energy epithermal neutrons. After
Neutron capture therapy of cancer
Neutron_capture_therapy_of_cancer
Low-yield thermonuclear weapon
A neutron bomb, officially defined as a type of enhanced radiation weapon (ERW), is a low-yield thermonuclear weapon designed to maximize lethal neutron
Neutron_bomb
Multi-disciplinary research facility in Lund, Sweden
magnetic properties, which are more challenging to probe with other neutron sources in terms of lengths and time scales. The research facility is located
European_Spallation_Source
Measure of charge inside a neutron
The neutron electric dipole moment (nEDM), denoted dn, is a measure for the distribution of positive and negative charge inside the neutron. A nonzero
Neutron electric dipole moment
Neutron_electric_dipole_moment
When one nuclear reaction causes more
Von Halban and L. Kowarski in Paris [non-primary source needed]searched for, and discovered, neutron multiplication in uranium, proving that a nuclear
Nuclear_chain_reaction
Radioactive isotope of Americium
_{0}^{1}n\ +\ \gamma } } The most widespread use of 241 AmBe neutron sources is a neutron probe – a device used to measure the quantity of water present
Americium-241
Induction of radioactivity by neutron radiation
Neutron activation is the process in which neutron radiation induces radioactivity in materials, and occurs when atomic nuclei capture free neutrons, becoming
Neutron_activation
A neutron research facility is most commonly a big laboratory operating a large-scale neutron source that provides thermal neutrons to a suite of research
Neutron_research_facility
One of the world's most powerful linear accelerators
and neutron science. It is also used for medical radioisotope production. LANSCE provides the scientific community with intense sources of neutrons with
Los Alamos Neutron Science Center
Los_Alamos_Neutron_Science_Center
Chemical element with atomic number 95 (Am)
used in commercial ionization chamber smoke detectors, as well as in neutron sources and industrial gauges. Several unusual applications, such as nuclear
Americium
Device that achieves nuclear fission without triggering a chain reaction
subcritical reactor uses additional neutrons from an outside source. There are two general classes of such devices. One uses neutrons provided by a nuclear fusion
Subcritical_reactor
Single directional neutron source
A neutron howitzer is a neutron source that emits neutrons in a single direction. It was discovered in the 1930s that alpha radiation that strikes the
Neutron_howitzer
German nuclear research reactor
The Research Neutron Source Heinz Maier-Leibnitz (Forschungsreaktor München II or FRM II) (German: Forschungs-Neutronenquelle Heinz Maier-Leibnitz) is
FRM_II
Scientific measuring instrument
effective neutron moderator, slowing high-energy neutrons. With a source of high-energy neutrons and a detector sensitive to low-energy neutrons (thermal
Neutron_moisture_gauge
Neutron time-of-flight scattering is a form of inelastic neutron scattering. It can be pulsed or continuous. In the pulsed version, the incoming neutron
Neutron time-of-flight scattering
Neutron_time-of-flight_scattering
Canadian-American physicist (born 1964)
to Oak Ridge in 1998 at the start of construction of the Spallation Neutron Source which he led from 2001 until project completion in 2006. Mason was born
Thomas_Mason_(physicist)
Field of physics dealing with nuclear reactors
reactor, the neutron population at any instant is a function of the rate of neutron production (due to fission processes) and the rate of neutron losses (due
Nuclear_reactor_physics
Neutron source used in some nuclear weapons
A modulated neutron initiator is a neutron source capable of producing a burst of neutrons on activation. It is a crucial part of some nuclear weapons
Modulated_neutron_initiator
Federal research center in Tennessee, US
third most powerful. The lab is a neutron and nuclear power research facility that includes the Spallation Neutron Source, the High Flux Isotope Reactor
Oak_Ridge_National_Laboratory
three-dimensional images by the detection of the absorbance of neutrons produced by a neutron source. It creates a three-dimensional image of an object by combining
Neutron_tomography
German nuclear reactor test facility
nuclear chain reaction was induced via bombardment of the fuel by a neutron source and measured. Natural uranium was used as fuel and heavy water, graphite
Haigerloch_atomic_pile
List compiling of particle accelerators used for particle physics experiments
Meyer, H.O.; Rinckel, T.; Snow, W.M. (2005). "Status of the low energy neutron source at Indiana University". Nuclear Instruments and Methods in Physics Research
List of accelerators in particle physics
List_of_accelerators_in_particle_physics
Neutron reflectometry is a neutron diffraction technique for measuring the structure of thin films, similar to the often complementary techniques of X-ray
Neutron_reflectometry
Nuclear reactor where fast neutrons maintain a fission chain reaction
fast fission, reducing total nuclear waste. As a strong fast-spectrum neutron source, they can also be used to transmute existing nuclear waste into manageable
Fast-neutron_reactor
Research nuclear reactor in Australia
a cold neutron source (CNS). The OPAL reactor already has received seven awards in Australia. The Bragg Institute at ANSTO hosts OPAL's neutron scattering
Open-pool Australian lightwater reactor
Open-pool_Australian_lightwater_reactor
Pair of research nuclear reactors in Nilore, Islamabad, Pakistan
(PARR) are two nuclear research reactors and two other experimental neutron sources located in the PINSTECH Laboratory, Nilore, Islamabad, Pakistan. In
Pakistan Atomic Research Reactor
Pakistan_Atomic_Research_Reactor
Chemical element with atomic number 98 (Cf)
californium emit neutrons. For example, californium can be used to help start up nuclear reactors, and it is used as a source of neutrons when studying materials
Californium
Density metering technique
a neutron moisture gauge consisting of an americium/beryllium high-energy neutron source and a thermal neutron detector. The high-energy neutrons are
Nuclear_densitometry
Nuclear fuel cycle
material or another neutron source is necessary to initiate the fuel cycle. In a thorium-fuelled reactor, 232 Th absorbs neutrons to produce 233 U. This
Thorium_fuel_cycle
American nuclear fusion and energy company
systems, support the design and simulation of its large-scale integrated neutron source stellarator Eos, and expand its team. Thea Energy's approach is a variant
Thea_Energy
Neutron backscattering is one of several inelastic neutron scattering techniques. Backscattering from monochromator and analyzer crystals is used to achieve
Neutron_backscattering
Free neutrons stored in very small traps
Ultracold neutrons (UCN) are free neutrons which can be stored in traps made from certain materials. The storage is based on the reflection of UCN by such
Ultracold_neutrons
Chemical element with atomic number 4 (Be)
radioisotope-powered neutron source for laboratory use. Finally, small amounts of tritium are also liberated by the high-energy neutrons in the three-step
Beryllium
Nucleosynthesis pathway
relative abundances of elements and isotopes produced depends on the source of the neutrons and how their flux changes over time. Each branch of the s-process
S-process
Total distance traveled by neutrons within a volume over a time period
The neutron flux is a scalar quantity used in nuclear physics and nuclear reactor physics. It is the total distance travelled by all free neutrons per
Neutron_flux
Iranian atomic scientific center
District includes (mainly supplied by China): MNSR – 27 kW Miniature Neutron Source Reactor Light Water Subcritical Reactor (LWSCR) Heavy Water Zero Power
Isfahan Nuclear Technology/Research Center
Isfahan_Nuclear_Technology/Research_Center
Chemical element with atomic number 89 (Ac)
has no significant industrial use. Its current applications include a neutron source and an agent for radiation therapy. André-Louis Debierne, a French chemist
Actinium
Nuclear fusion reaction
without an external neutron source and used two types of neutron detectors. They claimed a liquid scintillation detector measured neutron levels at 8 standard
Bubble_fusion
primary research purpose of the reactor is to provide a neutron source for activities such as Neutron activation analysis. For example, cobalt-60 irradiators
North Carolina State University reactor program
North_Carolina_State_University_reactor_program
Swiss federal research institute
produce pions that feed the muon source and the Ultracold Neutron source UCN produces very slow, ultracold neutrons. All these particle types are used
Paul_Scherrer_Institute
Type of nuclear reactor design
The neutrons needed for sustaining the fission process would be provided by a particle accelerator producing neutrons by spallation or photo-neutron production
Accelerator-driven subcritical reactor
Accelerator-driven_subcritical_reactor
Type of neutron star with beams of radiation
(pulsating star, on the model of quasar) is a highly magnetized rotating neutron star that emits beams of electromagnetic radiation out of its magnetic
Pulsar
Reaction that combines atomic nuclei
Lab, only detecting the resulting energized protons and neutrons, misinterpreted the source as an exothermic disintegration of the deuterons, now known
Nuclear_fusion
Type of stellar collision
A neutron star merger is the stellar collision of neutron stars. When two neutron stars fall into mutual orbit, they gradually spiral inward due to the
Neutron_star_merger
American nuclear engineer (1935–2020)
of neutrons for research and developing the first spallation slow neutron source based on a proton synchrotron, the Intense Pulsed Neutron Source (IPNS)
John_M._Carpenter
Reaction that splits an atomic nucleus
Hahn and Strassmann predicted the existence and liberation of additional neutrons during the fission process, opening up the possibility of a nuclear chain
Nuclear_fission
characters in the American film Jimmy Neutron: Boy Genius, its subsequent television series The Adventures of Jimmy Neutron, Boy Genius and other media of the
List of Jimmy Neutron characters
List_of_Jimmy_Neutron_characters
Subatomic particle
The antineutron is the antiparticle of the neutron with symbol n. It differs from the neutron only in that some of its properties have equal magnitude
Antineutron
2001 animated film by John A. Davis
Jimmy Neutron: Boy Genius is a 2001 American animated science fiction comedy film directed by John A. Davis and written by Davis, David N. Weiss, J. David
Jimmy_Neutron:_Boy_Genius
Italian-American physicist (1901–1954)
radioactive elements produced by neutron irradiation, and for his related discovery of nuclear reactions brought about by slow neutrons". He has been called the
Enrico_Fermi
1938 achievement in physics
1932 after Chadwick's discovery of the neutron. Meitner showed him how to prepare a polonium-beryllium neutron source. On returning to Rome, Rasetti built
Discovery_of_nuclear_fission
Interdisciplinary research centre in Germany
including eight sites at European and international neutron and synchrotron radiation sources, two joint institutes with the University of Münster,
Forschungszentrum_Jülich
Chemical element with atomic number 94 (Pu)
was simultaneously showered with neutrons from "Urchin", an initiator made of polonium and beryllium (neutron source: (α, n) reaction). Together, these
Plutonium
Solid-state neutron generator
smallest neutron generator - it's not just for nukes anymore". 25 August 2012. Retrieved 2023-09-09. "Neustristor: The Computer Chip-Shaped Neutron Source".
Neutristor
Smallest amount of fissile material needed to sustain a nuclear reaction
neutron population. A numerical measure of a critical mass depends on the effective neutron multiplication factor k, the average number of neutrons released
Critical_mass
Electricity generation by nuclear fusion
Wolfgang (2011). Strong Neutron Sources – How to cope with weapon material production capabilities of fusion and spallation neutron sources? (PDF). 7th INMM/Esarda
Fusion_power
Atom that has excess nuclear energy, making it unstable
the universe. Artificial production methods of radionuclides include neutron sources such as nuclear reactors, as well as particle accelerators such as
Radionuclide
Branch of fusion energy research
Findlay, D; Nelmes, R (February 2007). "A Route to the Brightest Possible Neutron Source?". Science. 315 (5815): 1092–1095. Bibcode:2007Sci...315.1092T. doi:10
Inertial_confinement_fusion
Particle accelerator
ZGS were ultimately inherited by a spallation neutron source program, the Intense Pulsed Neutron Source (IPNS). Significant portions of the 1996 chase
Zero_Gradient_Synchrotron
Natural reactions causing nucleosynthesis
Astrophysics Spall, or spalling Spallation Spallation Neutron Source ISIS neutron source PSI Spallation Neutron Source (SINQ) Space portal Boesgaard, A. M. (August
Cosmic_ray_spallation
Radionuclide emitting ionizing radiation
radiation types gamma rays, alpha particles, beta particles, and neutron radiation. Sources can be used for irradiation, where the radiation performs a significant
Radioactive_source
Type of neutron star with a strong magnetic field
A magnetar is a type of neutron star with an extremely powerful magnetic field (~109 to 1011 T, ~1013 to 1015 G). The magnetic-field decay (or dissipation)
Magnetar
Decay of a neutron when outside a nucleus
A free neutron refers to a neutron that is not bound to an atomic nucleus. When embedded in a stable nuclide, neutrons have not been observed to decay
Free_neutron_decay
Circular particle accelerator concept
and advantageous as a proton accelerator for an intense spallation neutron source, starting off projects like the Argonne Tandem Linear Accelerator at
Fixed-field alternating gradient accelerator
Fixed-field_alternating_gradient_accelerator
Research center at Stanford University
Quadrupole magnet – Group of four magnets Spallation Neutron Source – Accelerator-based neutron source in Oak Ridge, Tennessee, US "Labs at a glance – SLAC"
SLAC National Accelerator Laboratory
SLAC_National_Accelerator_Laboratory
Several neutron scattering techniques have been developed to use thermal neutrons to characterize magnetic micro and nanostructures. Small-angle neutron scattering
Neutron_magnetic_imaging
Research apparatus for particle physics
penetrating at high energies. Current accelerators such as the Spallation Neutron Source, incorporate superconducting cryomodules. The Relativistic Heavy Ion
Particle_accelerator
Adventures of Jimmy Neutron, Boy Genius episodes. The series is based on the 2001 film Jimmy Neutron: Boy Genius. "The Adventures of Jimmy Neutron: Boy Genius:
List of The Adventures of Jimmy Neutron, Boy Genius episodes
List_of_The_Adventures_of_Jimmy_Neutron,_Boy_Genius_episodes
British scientific research laboratory
major scientific facilities, including: the ISIS Neutron and Muon Source (1984), a spallation neutron source. the Central Laser Facility, providing access
Rutherford Appleton Laboratory
Rutherford_Appleton_Laboratory
Arrangement amplifying neutron production from Cf-252
A californium neutron flux multiplier (CFX) is a source of neutrons for research purposes. It contains a small amount of californium-252 and several plates
Californium neutron flux multiplier
Californium_neutron_flux_multiplier
Tendency of highly fluorinated molecules to vaporize
detectors while californium is used as a spontaneous fission based neutron source. Curium has only very limited uses outside nuclear reactors. Fissionable
Fluoride_volatility
Topics referred to by the same term
can refer to: A person who instigates something. Modulated neutron initiator, a neutron source used in some nuclear weapons Initiator, an Explosive booster
Initiator
Type of nuclear fuel
thermal neutrons available to continue the chain reaction. A subcritical reactor with an external neutron source could either be run in the fast neutron spectrum
MOX_fuel
Apparatus to create nuclear fusion
Energy Authority. Fusors have also been developed commercially, as sources for neutrons by DaimlerChrysler Aerospace and as a method for generating medical
Fusor
Core of a nuclear implosion weapon
about 1 cm (3⁄8 in). The internal neutron initiators were later phased out and replaced with pulsed neutron sources, and with boosted fission weapons
Pit_(nuclear_weapon)
Fusion power research concept
(IECF) neutron source. The device is capable of reaching an energy potential of -92kV. It can generate a neutron yield of up to 107 neutrons per second
Inertial electrostatic confinement
Inertial_electrostatic_confinement
Retired research nuclear reactor in Canada
isotopes used for non-medical purposes). It was the neutron source for the NRC Canadian Neutron Beam Centre: a materials research centre that grew from
National Research Universal reactor
National_Research_Universal_reactor
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