Results 251 to 260 of about 75,032 (297)

Neutron-irradiated crystalline quartz

Physical Review B, 1981
Neutron irradiation of crystalline SiO/sub 2/ creates two-level-state (TLS) excitations similar to those found in vitreous SiO/sub 2/. Using evidence obtained from x-ray and mass-density measurements, we conclude that the TLS excitations in damaged crystals need not reside in regions of material made amorphous.
A. C. Anderson, J. A. McMillan, F. J. Walker   +2 more
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Neutron irradiation on MgB2

Physica C: Superconductivity and its Applications, 2007
We measured the upper critical field H-c2 and the critical current density J(c) on neutron-irradiated MgB2 samples and studied the effects of damaging on pinning mechanisms. We observed a strong enhancement of the upper critical field and great improvement of the critical current magnetic field dependence in an intermediate range of fluence.
Tarantini C, Aebersold HU, Bernini C, Braccini V, Ferdeghini C, Gambardella U, Lehmann E, Manfrinetti P, Palenzona A, Pallecchi I, Vignolo M, Putti M   +11 more
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Irradiated Ra:Be Neutron Sources

Nuclear Science and Engineering, 1961
An analytical and experimental investigation of irradiated Ra:Be neutron sources has been carried out at the Bettis Laboratory and at the Materials Test Reactor (MTR) in Idaho.
D. J. Dudziak, L. B. Freeman
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252Cf neutron irradiation facilities

Nuclear Instruments and Methods, 1976
Abstract An activation facility has been designed for the accomodation and safe-handling of up to 50 mg of 252 Cf neutron source. The absolute values of thermal, epithermal and fast neutron fluxes were determined by the foil activation method using In, Dy, Au, Al and Fe detectors, and compared with other experimental results and theoretical ...
Cs.M. Buczkó, M.H. Al-Mundheri, J. Csikai, Z. Dezs'́o   +3 more
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Neutron-irradiated plastic scintillators

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2001
The polystyrene (PS)-based scintillator SCSN38, pure PS and pure polymethylmethacrylate (PMMA) have been irradiated with a beam of fast neutrons and with reactor neutrons. The radiation-induced permanent optical absorption coefficients after total annealing in air are compared with data for γ irradiations.
B Bodmann, U Holm
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Neutron irradiation of Ar1C60

Chemical Physics Letters, 1996
Abstract Samples of Ar 1 C 60 (both powder and films) were produced by hot isostatically pressing C 60 in an atmosphere of Ar at 170 MPa. The prepared samples of Ar 1 C 60 were irradiated with neutrons in a high flux nuclear reactor for a period of 4 h.
G.E. Gadd, P.J. Evans, D.J. Hurwood, J. Wood, S. Moricca, M. Blackford, M. Elcombe, S. Kennedy, M. James   +8 more
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Post-irradiation annealing of neutron irradiated CuCrZr

Journal of Nuclear Materials, 2002
The effect of post-irradiation annealing at 300 °C for 50 h on the microstructure and mechanical properties of CuCrZr irradiated to 0.2 and 0.3 dpa at 100 °C has been evaluated. The post-irradiation annealing removes the yield point phenomenon, lowers the strength and improves the ductility and work hardening of the material.
Edwards, DJ, Singh, BN, Xu, Q, Toft, P
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Irradiation embrittlement of neutron-irradiated ferritic steel

Journal of Nuclear Materials, 1985
Abstract In this study three kinds of Fe-Cr ferritic steels were examined by the instrumented Charpy test and tensile test before and after JMTR irradiation ( 2.2×10 23 f.n./m 2 ). In the unirradiated samples, 100%-martensite 5Cr-2Mo steel showed the highest adsorbed energy and the highest toughness at low temperatures, follewed by ...
H. Kayano, M. Narui, S. Ohta, S. Morozumi   +3 more
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Material Neutron Irradiation Damage

2019
Material neutron irradiation damage refers to the microstructural change and performance degradation of material induced by neutron irradiation [1]. These changes caused by collision displacement, transmutation, and ionization effects can significantly affect the macroscopic physical and mechanical properties of a material. In advanced nuclear systems,
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Neutron-Irradiated Enamel in Dissolution Studies

Journal of Dental Research, 1966
SYNOPSIS IN INTERLINGUA ADAMANTE IRRADIATE CON NEUTRONES IN STUDIOS DE DISSOLUTION.—Le rationes pro le non-uniformitate del reductiones producite per bombardmentso neutronic in le solubilitate acidic de intacte superficies de adamante esseva investigate in varie preparatos adamantin sub le conditiones de varie sequentias de solubitate con le uso de ...
T W, Cutress, W B, Healy, H, Allison
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