Results 271 to 280 of about 54,467 (314)

Calculations of neutron spectra after neutron–neutron scattering

Journal of Physics G: Nuclear and Particle Physics, 2004
A direct neutron–neutron scattering length, ann, measurement with the goal of 3% accuracy (0.5 fm) is under preparation at the aperiodic pulsed reactor YAGUAR. A direct measurement of ann will not only help resolve conflicting results of ann by indirect means, but also in comparison to the proton–proton scattering length, app, shed light on the charge ...
B E Crawford, S L Stephenson, C R Howell, G E Mitchell, W Tornow, W I Furman, E V Lychagin, A Yu Muzichka, G V Nekhaev, A V Strelkov, E I Sharapov, V N Shvetsov   +11 more
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Neutron-Neutron Scattering

1992
Abstract The experimental determination of the neutron-neutron scattering length is of interest from the point of view of both the study of nucleon-nucleon interactions and the verification of the hypothesis of isotopic invariance of strong interactions at low energies.
Yu. A Alexandrov, T F Drozdova
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Neutron logging of drill holes; the neutron-neutron method

Geophysics, 1951
Abstract Experiments were performed to determine the distribution of thermal neutrons and of indium resonance neutrons in continuous hydrogenous media and in pipes passing through hydrogenous media. Included in the study were water, brine, mixtures of sand and water, and mixtures of sand and brine.
C. W. Tittle, Henry Faul, Clark Goodman
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Neutron-Neutron Interaction

Reviews of Modern Physics, 1967
The present status of the problem of charge dependence is discussed. The information about the neutron-neutron interaction derived from the two-neutron system, three-nucleon systems, final-state interactions in multiparticle reactions, and peripheral processes is critically evaluated.
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Neutron activation in interrupted neutron beams

Applied Radiation and Isotopes
Neutron activation of activation targets in neutron beams with interruptions is studied. A simple and robust formalism for determining the number of activated atoms in neutron activation measurement despite beam interruptions is derived. Two simplified methods for correcting for the decay of produced nuclei in the activation target during beam ...
Wendland Lauri, Porra Liisa, Tenhunen Mikko, Seppälä Tiina, Wendland Lauri, Porra Liisa, Tenhunen Mikko, Seppälä Tiina   +7 more
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Emission of Neutrons and the Neutron Halo of 11Li

1992
The matter distribution of the neutron drip-line nuclei has been a subject of intense interest since pioneering radioactive-beam experiments at Berkeley1). Unusually large interaction cross-sections measured at relativistic energies for 11Li,14Be and 17B nuclei were translated into effective matter radii.
Lewitowicz, M., Anne, R., Arnell, S.E., Bimbot, R., Emling, H., Guillemaud-Mueller, D., Hansen, P.G., Johannsen, L., Jonson, B., Mattson, S., Mueller, A.C., Neugart, R., Nyman, G., Pougheon, F., Richter, A., Riisager, K., Saint-Laurent, M.G., Sorlin, O., Wilhelmsen, K.   +18 more
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Neutron radiography with ultracold neutrons

Physics Letters A, 1981
Abstract The neutron transmission factor of very thin films may be low if the neutron energy is comparable to the pseudo-potential of the film material. Surprisingly, perhaps, it is relatively easy to obtain neutrons with such low energies in sufficient numbers to produce neutron radiographs.
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Neutron Spin-Neutron Orbit Interaction with Slow Neutrons

Physical Review Letters, 1963
Measurements were made of the polarization ratio of the scattered intensities for the two neutron spin states for two reflections (110) and (220) for positive angles and for the reflection (110) at negative angles. Very high neutron polarization was available and the intensity was studied as the magnetic field on the crystal was reduced to zero so as ...
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Neutron-Neutron Scattering Length

Physical Review, 1961
The final-state interaction of the two neutrons from the reaction pi / sup -/ + d yields 2n + gamma has a pronounced and distinctive effect on tbe momentum spectrum of the outgoing particles. In particular, the neutron spectrum is sharply peaked in the neighborhood of 2 Mev, with a shape that is quite sensitive to the strength of the nn interaction. In
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The Neutron

Physical Review, 1931
Langer, R. M., Rosen, N.
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