Threshold displacement and interstitial-atom formation energies in Ni3Al
نویسندگان
چکیده
منابع مشابه
Time-of-flight atom probe measurements on Ni3Al and Co3W.
In this study, a VG FIM100 was taken into operation, consisting of a field-ion microscope (FIM), a time-of-flight atom probe (TOFAP) and an imaging atom probe. A tungsten specimen was used to calibrate the conversion of flight times to m/n values. The resulting relative mass resolution of the TOFAP was calculated to be m/Deltam approximately 500 FWHM. In time-of-flight measurements of homemade ...
متن کاملStatistical Atom: Ionization Energies
A novel expansion of the Thomas-Fermi potential for a weakly ionized atom is presented. It is employed in calculating the ionization energies of neutral atoms as they are predicted by an extended version of the Thomas-Fermi model which includes the exchange energy and the leading quantum correction. The ionization energy, I, can be split into a smooth part, /stat, that is here obtained by the s...
متن کاملsimulation and experimental studies for prediction mineral scale formation in oil field during mixing of injection and formation water
abstract: mineral scaling in oil and gas production equipment is one of the most important problem that occurs while water injection and it has been recognized to be a major operational problem. the incompatibility between injected and formation waters may result in inorganic scale precipitation in the equipment and reservoir and then reduction of oil production rate and water injection rate. ...
Enhancement of positron-atom annihilation near the positronium formation threshold.
The behavior of the positron- 2 gamma annihilation rate on an atomic target near the positronium (Ps) formation threshold is determined. When the positron energy epsilon approaches the threshold epsilon(thr) from below, the effective number of electrons contributing to the annihilation, Z(eff), grows as Z(eff) approximately A/square root of [epsilon(thr)-epsilon], where A is related to the size...
متن کاملNonlinear Dynamics of Interstitial Atom
where m is the mass of the particle and γ is the friction constant, (t) is the random force with zero mean and a nonzero variance. As an example let us mention a generalized Langevin equation describing dynamics of atoms interacting with thermal vibrations of the crystal lattice derived in Ref. [2]. Both the friction and the random force are very crude phenomenological substitutes of the real c...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Materials Research
سال: 1990
ISSN: 0884-2914,2044-5326
DOI: 10.1557/jmr.1990.1409