The experimental techniques available for the measurement of equilibrium vacancy
concentrations, vacancy formation enthalpies and entropies are reviewed. Such methods as …

Stacking faults are defined as regions present in the crystal where the normal sequence of
stacking is disturbed. This takes place around a localized area. These defects come under …

The oonsoious study of lattice defects with positrons is now some ten years old. Although
sharing the techniques and guided by the results of the longer established studies described …

Absolute vacancy concentrations are being determined by Differential Dilatometry (DD)
measuring simultaneously the relative change in length by a laser/optical slit technique and …

Positrons may be used in many cases to determine defect densities of vacancies and
dislocations. In case of saturated positron trapping, ie all positrons are getting trapped, only …

The monovacancy formation enthalpy in copper, H 1v F=(1.30+ or-0.05) eV, has been
measured using precision electrical resistometry on samples quenched from temperatures …

Semicrystalline ethylene/1-octene copolymers (P (E-co-O)) with a content of 1-octene
comonomer, wO, between 7 and 24wt% and a crystallinity Xc between 50 and 10% and a …

Positron annihilation lifetime spectroscopy (PALS) was used to study the free volume
behavior in the temperature range between 100 and 370 K in semicrystalline poly (ε …

The response of positron annihilation parameters to the defect structures produced by
neutron irradiation in copper, and their annealing behaviour, have been studied on …

Positron annihilation Doppler-broadening and lifetime data obtained for Cu in the
temperature region of about 25-1040 degrees C are presented. The data were obtained by …