Zobrazeno 1 - 10
of 58
pro vyhledávání: '"Frank W. Clinard"'
Autor:
Terence E. Mitchell, Masanori Ikari, Takayoshi Iseki, Toyohiko Yano, E.H. Farnum, Frank W. Clinard
Publikováno v:
Journal of the American Ceramic Society. 78:1469-1474
MgO·3Al2O3 single crystals were irradiated with neutron fluences of 8.3 × 1022 n/m2 at 100°C and 2.4 × 1024 n/m2 at 470°C (E > 1.0 MeV) in the Japan Materials Testing Reactor. The Knoop microhardness of several orientations on the (100) plane of
Autor:
E.H. Farnum, Frank W. Clinard
Publikováno v:
Journal of Nuclear Materials. 219:161-164
DC and AC conductivity of Al{sub 2}O{sub 3} ceramics were measured at elevated temperatures during irradiation with neutrons and gamma rays at the Los Alamos Spallation Radiation Effects Facility. DC conductivity was increased at start of irradiation
Publikováno v:
Journal of Nuclear Materials. 219:224-229
Diagnostic systems for fusion reactors will require mirrors capable of reflecting electromagnetic radiation in the soft X-ray, near UV, visible, and IR wavelengths. These components will be exposed to significant fluences of fast neutrons during use.
Publikováno v:
Progress in Nuclear Energy. 29:63-127
High-level nuclear waste in the United States comprises large volumes (tens of millions of cubic meters), high total activities (billions of Curies) and highly diverse and complex compositions. The principal sources of nuclear waste are: (i) spent nu
Autor:
B.D. Evans, J.J. O'Dwyer, Frank W. Clinard, R. Gonzalez, X. F. Zong, E.H. Farnum, Roger H. French, Y. Chen, F.W. Wiffen
Publikováno v:
Journal of Nuclear Materials. 217:32-47
This report addresses a recently reported phenomenon — that a simultaneous application of energetic particle radiation, electric field, and elevated temperature for an extended period of time has a permanent adverse effect on insulating ceramics, i
Publikováno v:
Journal of Nuclear Materials. 216:291-321
Ceramics represent a large class of solids with a wide spectrum of applicability, whose structures range from simple to complex, whose bonding runs from highly ionic to almost entirely covalent and, in some cases, partially metallic, and whose band s
Search for radiation-induced electrical degradation in alumina during spallation-neutron irradiation
Publikováno v:
Journal of Nuclear Materials. :1128-1132
dc and ac electrical conductivity of alumina and sapphire were measured during irradiation with spallation neutrons at the Los Alamos Spallation Radiation Effects Facility to a fluence of about 0.02 dpa. Both ac and dc voltages were applied during ir
Publikováno v:
Journal of Nuclear Materials. :1075-1080
Ceramics will be used for a number of applications in fusion devices, where their dielectric properties, high strength, refractoriness, or low activation characteristics are required. In all cases mechanical properties must be adequate for the use in
Autor:
Frank W. Clinard, E.H. Farnum
Publikováno v:
Journal of Nuclear Materials. 206:353-359
Ceramics subjected to irradiation show a wide variety of damage responses, depending on composition, nature of bonding, crystal structure, starting microstructure, and type of bombarding particles. As doses reach high damage levels (a condition that
Publikováno v:
Journal of Nuclear Materials. :548-551
Changes in the dielectric constant and loss tangent of alumina have been measured in situ during proton irradiation. In these experiments, single crystal sapphire specimens were irradiated with 3 MeV protons which passed through the sample and were s