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Tilted angle ion implantation
Fink D., Bffirsack J.P., Kranz H., Souza J.D., Behar M., Zawislak F.C.
Mechanisms controlling high temperature embrittlement due to helium
Trinkaus H.
High temperature embrittlement due to helium is controlled by helium-assisted cavity formation on grain boundaries. The basic mechanisms, underlying this process are discussed: bubble nucleation and growth, bubble-void conversion and void growth, crack formation by void coalescence. Differences between the microstructural evolution associated with different test conditions are emphasized. The lengths of the stages, characterized by the dominance of one of the basic mechanisms at a time, and their contributions to the strain are estimated. Mechanism maps constructed from creep rupture and microstructure data in combination with theoretical models are suggested as guidelines for extrapolating simulation results to fusion reactor conditions
Microstructure and mechanical properties of medium energy (600-800 MeV) proton irradiated commercial aluminium alloys
Lohmann W., Ribbens A., Sommer W.F., Singh B.N.
Commercial AlMg- and AlMgSi-alloys were irradiated with medium energy (600-800 MeV) protons to a nominal fluence of 3.2 × 1024 p/m2 which yields by calculation a displacement damage of 0.2 dpa and helium and hydrogen generation of 67 and 275 appm, respectively. Post-irradiation tensile testing revealed a very marked degree of irradiation-induced softening in the cold-worked AlMg-alloy as well as in the precipitation-hardened AlMgSi-alloy. The TEM examination of the irradiated specimens showed that neither the cold-work microstructure in the AlMg-alloy nor the G.P. zone type precipitates in the AlMgSi-alloy survive under the irradiation conditions used in the present experiment. Results of complimentary investigations (i.e., hardness measurements, optical microscopy and SEM-fractography) are also presented.
The materials requirements for net
Harries D.R.
Creep and creep-rupture properties of type 1.4970 stainless steel during and after irradiation
Wassilew C., Schneider W., Ehrlich K.
Summary of discussion sessions
Brimhall J.L., Trinkaus H.
Radiation effects in actinide host phases
Weber W.J., Matzke H.J.
Implantation and thermal annealing behaviour of Bi imlanted into the Al/KCl bilayer compound
Oliviri C.A., Behar M., Fichtner P.F., Zawislak F.C., Fink D., Biersack J.P.
High-resolution spectrometer for photons from charged particle induced reactions
Borchert G.L., Wieder K.P., Schult O.W.
Detailed investigations of fission neutron emission
Märten H., Neubert W., Richter D., Seeliger D.
Doppler broadenings of neutron resonances in crystal lattices compared with the gas-model approximation
Meister A., Mittag S., Pilz W., Seeliger D., Seidel K.
Mass and energy distribution of fragments from the 245Cm (nth, f) reaction
Koczon P., Mutterer M., Theobald J.P., Moore M.S., Goennenwein F., Geltenbort P., Oed A., Pannicke J.
Information theory applied to unresolved resonances
Fröhner F.H.
The information-theoretical maximum-entropy principle permits to find probability distributions with given averages such as expectation values or higher moments. If the given averages are optical-model phase shifts one obtains the corresponding multivariate distributions of S- and R-matrix elements as the Poisson kernel in the domain of unitary, symmetric matrices and as a generalised t-distribution, respectively. Resonance- averaged cross sections can be calculated as averages over these distributions, i. e. as functions of average S-matrix elements. This constitutes, in principle, a solution of the long-standing Hauser-Feshbach problem, rigorous and general, with direct interactions easily included. In the one-channel case one gets also the cross section distribution in simple analytic form, from which the resonance-averaged transmission is readily calculated.
Mass and energy distribution of fission fragments in 249Cf(nth, f)
Aker E., Engelhardt D., Brissot R., Geltenbort P., Gönnenwein F., Oed A., Gindler J., Wilkins B.
An experiment to measure neutron cross-sections of milligram amounts of actinides in a fast reactor
Meester R.D., Koch L., Wellum R., Broeders I., Schmidt L.
Light nuclei from the thermal neutron induced fission of 235U
Doan T.P., Barreau G., Sicre A., Caïtucoli F., Leroux B., Theobald J.P., Mutterer M., Koczoń P.
Long range alpha particle associated neutron induced fission of U-235
Pannicke J., Mutterer M., Theobald J.P., Heeg P., Weingaertner K., Barreau G., Leroux B., Goennenwein F.
The ternary fission component in 235U(n, f) was studied in detail using the detection system ‘DIOGENES’, measuring ternary alpha particles in coincidence with both correlated fission fragments. Present results on equatorial and polar ternary fission are discussed.
The discrepancy between differential and integral data on Ti-47 (n, p)
Mannhart W., Smith D.L., Meadows J.W.
How well are the IBM-2 parameters determined by the experimental data?
Barrett B.R., Morrison I., Zabolitzky J.G.
