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Topic: Nucleon


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In the News (Thu 18 Apr 19)

  
  Damn Interesting » The Atomic Automobile
It was during this honeymoon with nuclear energy– in 1957– that the Ford Motor Company unveiled the most ambitious project in their history: a concept vehicle which had a sleek futuristic look, emitted no harmful vapors, and offered incredible fuel mileage far beyond that of the most efficient cars ever built.
The Nucleon's silent, sleek, and efficient design was poised to secure its place in the American lifestyle of the future.
But the Nucleon's design hinged on the assumption that smaller nuclear reactors would soon be developed, as well as lighter shielding materials.
www.damninteresting.com /?p=656   (4715 words)

  
 NUCLEON SPIN   (Site not responding. Last check: 2007-10-11)
To measure the fraction of the nucleon spin carried by the quark spins, one must orient the spins of the incoming lepton and of the target nucleon, so that the lepton and nucleon spin are either parallel or antiparallel to each other.
Nucleon spins are oriented in the direction of the beam by dynamic nuclear polarization and then frozen at 30mK using a helium3/helium4 dilution refrigerator.
Taken at face value, the recent SMC and E143 data indicate a significant contribution to the nucleon spin from the strange quarks and antiquarks with a net polarization opposite to that of the nucleon.
na47sun05.cern.ch /target/nucleonspin.html   (1086 words)

  
 Nucleon - Wikipedia, the free encyclopedia
In physics a nucleon is a collective name for two baryons: the neutron and the proton.
Thus, the study of the low-energy properties of the nucleon are performed by means of models.
The hedgehog model is able to predict low-energy parameters, such as the nucleon mass, radius and axial coupling constant, to approximately 30% of experimental values.
en.wikipedia.org /wiki/Nucleon   (1297 words)

  
 The Soudan Underground Laboratory
Physics experiments at Soudan focus on three major topics: the stability of matter (nucleon decay), the nature and interaction patterns of the cosmic rays and particles called neutrinos, whose properties are a sensitive test of the mechanisms of the fundamental interactions.
If a nucleon were to decay, its mass energy would be partially converted into kinetic energy of lighter particles emerging from the point where the nucleon disappeared.
(1) The mass energy of a nucleon (proton or neutron) is known and the total energy of the emerging particles (mass energy plus kinetic energy) must be equal to the initial mass energy of the nucleon.
www.hep.umn.edu /soudan/brochure.html   (2784 words)

  
 research interests
[2] This is consistent with the interpretation of this state as a radial excitation of the nucleon and tends to exclude hybrid models with significant excitation of the gluon field.
Nucleon knockout by electron scattering provides a powerful probe of the electromagnetic properties of nucleons and of the momentum distributions in nuclei.
A nucleon found in the surface is aware of the interior, and vice versa, so that density-dependent corrections persist at low densities and are not saturated in the interior (at least for light- and medium-weight nuclei).
www.physics.umd.edu /enp/jjkelly/research.html?nucleon-nucleus   (3497 words)

  
 APS Division of Nuclear Physics - Current Research Topic
The widely accepted interpretation is that the nucleon spin comes from the quark spin, the orbital angular momentum (OAM) of quarks, and the total angular momentum of gluons, with only (20-30)% from quark spin.
In leading-order pQCD, the quark (either the up or the down quark) which carries a majority of the nucleon's energy should have its spin aligned parallel to the nucleon spin, while in the valence quark model, the down quark carrying most of the nucleon's energy has its spin on average anti-aligned to the nucleon spin.
This result is consistent with previous spin experiments in that it indicates that the quark OAM contributes significantly to the nucleon spin and should not be neglected even in the high-energy valence quark region.
dnp.nscl.msu.edu /current/spin.html   (1124 words)

  
 Nucleon Quest Super Convoy - TRU Exclusive
Nucleon Quest Super Convoy is a re-paint of Godmaster Super Ginrai and packaged in a box measuring 16.75"x4.25"x7.25" (11" including the back flap).
His arms bend at the elbow and due to the size of the rifles, his arms are limited to about a 45 degree extension.
To transform Nucleon Quest Super Convoy from trailer mode to robot mode, lift the top fl panel slightly then fold out the panels located at the middle of the trailer.
mykooltoyz.tripod.com /nucleonquest.html   (968 words)

  
 The Ronald A. Brightsen Nucleon Cluster Model of the Atomic Nucleus   (Site not responding. Last check: 2007-10-11)
Thus, the Brightsen Nucleon Cluster Model follows a well known line of theoretical thinking that the primary "wave function" within the atomic nucleus is a combination of partial wave functions that involve the division of the nucleus into subsystems (e.g.
The reason is that the Standard Model follows directly from the 1948 hypothesis of Maria Mayer and Hans Jensen that the N and P are independent structures in nuclear shells, and that nuclear stability results from P binding to P and N to N in potential energy wells.
The Brightsen Nucleon Cluster Model rejects this hypothesis and suggests that "clusters of N and P" exist in nuclear shells in stable nuclides (although P-P and N-N weakly bound resonances are predicted by the Brightsen Model as halo structures).
www.brightsenmodel.phoenixrising-web.net /welcome.html   (1786 words)

  
 CERN Courier - Nucleon form factors stride - IOP Publishing - article
The strange and axial nucleon form factors are strongly related to the electromagnetic form factors, and their extraction from experimental observables is largely influenced by our knowledge of these quantities, thanks to the impressive precision that experiments have achieved.
A global description of the four nucleon form factors in the space-like and time-like regions can be obtained by vector-dominance models and also through dispersion relations, which can be analytically continued to the time-like region.
The project for a complete measurement of the nucleon form factors in the time-like region at Frascati with the upgraded DAFNE storage-ring, which has already triggered a great deal of interest within the community, was presented by Marco Mirazita of Frascati.
www.cerncourier.com /main/article/46/3/28   (1788 words)

  
 Utter Trash--Nucleon
Nucleon (Paul Resnick – vocals, synth bass and space sounds, Rich Troha on guitar and effects and Danny Cohen on drums) begins every performance by stating that their audience will be destroyed.
In fact, before Nucleon Paul was in a band called Space Core which arguably sounded more like classic Hawkwind than anything that venerable English band has released in years.
With their problems now behind them, Nucleon is ready to resume their path of destruction once again.
www.uttertrash.net /nucleon.htm   (633 words)

  
 Nucleon-Pion Lagrangian
Anyhow, the nucleons contain not only the three (valence) quarks, but also plenty of gluons, and plenty of virtual quark pairs, and we are unable to find what exactly this state is. Therefore, here we follow the general strategy of attributing elementary fields to composite particles.
It is now a matter of a simple algebra to verify that Lagrangian density (41) remains invariant under chiral rotations of fields (42) and (43).
This is not necessary - the nucleon mass results from the same chiral-symmetry-breaking mechanism that pushes scalar mesons up to high energies.
www.fuw.edu.pl /~dobaczew/maub-42w/node14.html   (709 words)

  
 Ford Nucleon - Wikipedia, the free encyclopedia
The passenger compartment of the Nucleon featured a one-piece, pillar-less windshield and compound rear window, and was topped by a cantilever roof.
The drive train would be integral to the power module, and electronic torque converters would take the place of the drive-train used at the time.
It was said that cars like the Nucleon would be able to travel 5,000 miles or more, depending on the size of the core, without recharging.
en.wikipedia.org /wiki/Ford_Nucleon   (307 words)

  
 Amazon.com: The Structure of the Nucleon: Books: Anthony W. Thomas,Wolfram Weise   (Site not responding. Last check: 2007-10-11)
Since the nucleon is a building block for all atomic nuclei, there is a need to analyse the its structure in order to fully understand the essential properties of all atomic nuclei.
After more than forty years of research on the nucleon, both the experimental and theoretical situations have matured to a point where a synthesis of the results becomes indispensable.
From the contents: electromagnetic structure of the nucleon, weak probes of nucleon structure, deep inelastic lepton scattering on the nucleon; elements of QCD, aspects of non-perturbative QCD, Chiral Symmetry and nucleon structure, models of the nucleon
www.amazon.com /Structure-Nucleon-Anthony-W-Thomas/dp/3527402977   (800 words)

  
 ScienceDaily: Nucleons Go Two-by-Two
He, along with ODU graduate student Rustam Niyazov and their collaborators, reconstructed billions of collisions to find the 3,000 events where one of the three nucleons of helium-3 was knocked out cleanly, leaving behind an almost undisturbed nucleon pair.
Unpaired nucleons move relatively slowly, with a speed that rarely exceeds 20 percent of the speed of light.
The paired nucleons were measured to have speeds up to 60 percent of the speed of light, providing clear experimental evidence of the strong interactions between two nucleons.
www.sciencedaily.com /releases/2004/01/040102072547.htm   (1554 words)

  
 Nucleon Electric Charge Distribution   (Site not responding. Last check: 2007-10-11)
Recent fits to nucleon form factor data show that the nucleon core has a Gaussian charge density distribution and peripheral periodicity of declining amplitude whose wavelength approximates the particle's Compton wavelength.
This periodic feature was not anticipated by quark models, but its characteristics do match those of a three-dimensional Turing wave pattern produced in certain nonlinear reaction-diffusion systems.
Almost three decades prior to these observational findings, the novel physics methodology of subquantum kinetics had predicted this type of electric field distribution for the nucleon, theorizing that subatomic particles may be Turing patterns or dissipative structures that emerge from an underlying reaction-diffusion matrix.
home.earthlink.net /~gravitics/Downloads/nucleon.html   (206 words)

  
 Nucleon Quest Convoy (2001) - Autobot Commander - www.tfu.info
Background: Once there was era in which the planet Seibertron had been struck by a fatal energy shortage.
Abilities: In order for him to extract the super-energy "Nucleon" that exists in fl holes, his entire structure is now protected by a phase modulation shield.
There are no known variations of Nucleon Quest Convoy.
www.tfu.info /2001/Autobot/NucleonQuestConvoy/nqconvoy.htm   (221 words)

  
 "Nucleon" by David D. Levine
The exhibition and I met in Eugene, Oregon in 1984, where I'd gone on a field trip with the Portland science fiction club.
One of the objects on display was a model of the Ford Nucleon, a 1958 design for a nuclear-powered car (see the photo below, from the exhibition catalog) which was, fortunately for us all, never produced.
On the tailgate was a name in chrome script: Nucleon.
www.spiritone.com /~dlevine/sf/nucleon.html   (919 words)

  
 NNN Nucleon Decay Workshop
To continue the fruitful discussions we had during the NNN99 workshop at Stony Brook, we are organizing a small 2-day NNN Nucleon decay working group meeting at UC Irvine (Feb. 25-26, 2000).
This workshop will be held on the UCI campus at the University Club (see Campus Map building 32).
In the meeting, we will continue discussions on various detector and technology options, and our future strategy/plan for producing a viable and compelling proposal for a large scale Nucleon Decay detector (see tentative agenda).
www.ps.uci.edu /~sobel/NNN/Workshop.html   (272 words)

  
 The Development of Pion﷓Nucleon Scattering Analysis
At that time, 1963, this author was a staff member of the Rutherford Laboratory in England whose proton accelerator was due to operate in 1964, one of the first planned experiments being pion‑nucleon scattering in the mass range 1500‑1750 MeV.
The nucleonic state corresponding to each submultiplet is indicated in pion‑nucleon scattering notation.
Previously explanations of, say pion‑nucleon, resonances were sought in detailed dynamical calculations involving the exchange of elementary particles between the pion and the nucleon.
www.arts.bev.net /roperldavid/roperres.htm   (5057 words)

  
 Nucleon Comercial Ltda.
Veja a seguir algumas soluções que a Nucleon oferece.
® Nucleon Comercial Ltda - Rua Assungui, 332 Sala 03 - Saúde - CEP 04131-000 - São Paulo/SP Mapa de Localização - Tel.: 11- 5063-2066 - Fax.: 11- 5063-2260 - e-mail: nucleon@nucleon.com.br
Copyright © 1999 - 2004 Nucleon Comercial Ltda - Todos os direitos reservados.
www.nucleon.com.br   (139 words)

  
 LEA: program to compute nucleon-nucleus scattering and nucleon knockout by electron scattering
nucleon knockout by electron scattering or photoabsorption with the full set of FSI options that are available to nucleon scattering, including channel coupling
Although there have been minor changes to the input since then, most nucleon-nucleus options are documented quite thoroughly.
Several papers have been published describing the formalism, but no documentation exists for use of the nucleon knockout options.
www.physics.umd.edu /enp/jjkelly/LEA/lea.html   (638 words)

  
 AllRefer.com - nucleon (Physics) - Encyclopedia
You are here : AllRefer.com > Reference > Encyclopedia > Physics > nucleon
nucleon, term applying to both the proton and the neutron, the two constituents of atomic nuclei.
The nucleon may be considered a single particle, of which the proton and the neutron are two different states.
reference.allrefer.com /encyclopedia/N/nucleon.html   (127 words)

  
 Press Release Archive: GW Center for Nuclear Studies to Host 9th International Symposium on Meson-Nuclear Physics and ...
Press Release Archive: GW Center for Nuclear Studies to Host 9th International Symposium on Meson-Nuclear Physics and the Structure of the Nucleon
ON MESON-NUCLEON PHYSICS AND THE STRUCTURE OF THE NUCLEON
The Center for Nuclear Studies at The George Washington University is pleased to announce the �9
www.gwu.edu /~media/pressreleases/07-25-01-NucleonSymposium.cfm   (105 words)

  
 Neutrino-nucleon Cross Sections
The neutrino-induced muons detectable by underwater/-ice detectors come from deep inelastic charge current scattering of a muon neutrino, 19#19 with a nucleon.
The differential cross section can be written in terms of the Bjorken scaling variables
The increase in the cross section plus an increased fraction of the neutrino energy going into the muon energy for increasing neutrino energy is one factor that makes neutrino astronomy favorable for neutrino energies above 10#101 TeV.
www.ps.uci.edu /~youngs/amanda/main/node13.html   (307 words)

  
 Nicolai Nucleon TFR Reviews   (Site not responding. Last check: 2007-10-11)
Do you have your front brake setup 'moto' style (on the right) ?
Buy and Sell the Nicolai Nucleon TFR from our Classifieds.
Submitted by Tin a Downhiller from Monterey Park, CA
www.mtbr.com /reviews/Downhill_Full_Suspension/product_123940.shtml   (203 words)

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