On the analysis by beta ray backscattering

Beta Backscattering by Metallic Elements and Simple Compounds

The aim was to investigate the angular dependence of the β-particle backscatter count rate, using a strontium-90 source. In addition the empirical relationship between the atomic number (Z number) of a scatterer and the count rate at a specific angle was investigated along with consideration of how this relationship behaves with simple compounds. Thick samples are used throughout. A brief inves...

the plain x-ray the diagnosis of the acute abdomen_

چکیده ندارد.

Effect of isotopic composition on the lattice parameter of germanium measured by x-ray backscattering

the role of task-based techniques on the acquisition of english language structures by the intermediate efl students

this study examines the effetivenss of task-based activities in helping students learn english language structures for a better communication. initially, a michigan test was administered to the two groups of 52 students majoring in english at the allameh ghotb -e- ravandi university to ensure their homogeneity. the students scores on the grammar part of this test were also regarded as their pre...

Unrecognized Backscattering in Low Energy Beta Spectroscopy

We present studies on electron backscattering from the surface of plastic scintillator beta detectors. By using a setup of two detectors coaxial with a strong external magnetic field – one detector serving as primary detector, the other as veto-detector to detect backscattering – we investigate amount and spectrum of unrecognized backscattering, i.e. events where only one detector recorded a tr...