Zobrazeno 1 - 10
of 55
pro vyhledávání: '"R. L. Fleischer"'
Autor:
P. Vater, R. Brandt, L.I. Kravets, S.G. Stetsenko, Wolfgang Ensinger, Yu. V. Bondar, V.P. Perelygin, R. L. Fleischer, M. Rebetez, R. Spohr
Publikováno v:
Physics of Atomic Nuclei. 66:1569-1573
The main goal of the present work is the search for and identification of relatively stable nuclei of superheavy elements (SHE) (Z>110) in galactic matter by fossil track study of nonconducting crystals from the surface of meteorites and rocks from t
Autor:
R. L. Fleischer, R.I. Petrova, M. Rebetez, P. Vater, I.G. Abdullaev, R. Brandt, L.I. Kravets, Yu. V. Bondar, Wolfgang Ensinger, G.P. Knyazeva, V.P. Perelygin
Publikováno v:
Radiation Measurements. 36:271-279
The unique approach for search and unambiguous identification of short-lived (T1/2=103–107 years) superheavy nuclei in cosmic-ray products of the recent nucleosynthesis in our Galaxy are discussed. It is based on: (a) the ability of non-conducting
Publikováno v:
Radiation Measurements. 32:325-328
Radon detector cups fitted with polyethylene anti-thoron membranes and exposed to a fixed radon concentration in a chamber containing a thermal gradient gave erratic track densities — ones that do not correlate with the temperatures of the CR-39 de
Publikováno v:
Nuclear Physics A. 718:410-412
New approaches for investigation of relatively stable nuclei of super heavy element (SHE) (Z > 110) in Galactic matter by fossil track study of meteoritic crystals is considered. Nuclei of SHE are thought to be the products of nucleosynthesis in expl
Autor:
R. L. Fleischer, D. W. McKee
Publikováno v:
Metallurgical Transactions A. 24:759-763
High-temperature intermetallic compounds are being tested for aerospace and engine applications in which strength, toughness, and oxidation resistance must be combined. Intermetallics have the prospects of high specific strength and specific elastic
Autor:
R. L. Fleischer
Publikováno v:
Journal of Materials Science. 28:4518-4529
Intermetallic and oxide superconductors can be improved by internal heavy ion irradiation damage produced by doping the materials with uranium followed by neutron-induced fission. The uniformity or the scale of the lack of it in the uranium distribut
Publikováno v:
Metallurgical Transactions A. 22:403-414
A number of alloys based on the binary CsCl (B2) compound AIRu are tough and also are ductile in compression at room temperature. Alloys that are substoichiometric in Ru tend toward intergranular brittleness, are enriched in Al at the grain boundarie
Publikováno v:
Metallurgical Transactions A. 21:3063-3074
Starting from the results of earlier screening tests of binary high-temperature intermetallic compounds, alloys based on Al3Nb, A18V5, IrNb, Si2V, and Si3Y5 have been studied by microhardness, elastic modulus, impact strength, and, in some cases, com
Autor:
R. L. Fleischer, R. J. Zabala
Publikováno v:
Metallurgical Transactions A. 21:2149-2154
Four Ti-Cr-Nb alloys containing the C15 Laves phase have been given a series of mechanical tests, including compression, bending, notch toughness, elastic moduli measurement, microhardness, and a simple impact toughness test. Strength remains high be
Autor:
R. L. Fleischer, R. J. Zabala
Publikováno v:
Metallurgical Transactions A. 21:1951-1957
A suite of 36 alloys has been tested that is based on titanium-containing ordered intermetallic compounds. Microhardness and tendency toward formation of cracks are reported as a function of temperature; room-temperature Young’s moduli are summariz