Nuclear structure study with core excitations in Ni region: for fpg9/2fpg_{9/2} space

Shell model calculations for Ni, Cu and Zn isotopes by modifying $fpg$ interaction due to Sorlin {\it et. al.,} [Phys. Rev. Lett. 88, 092501 (2002)] have been reported. In the present work 28 two body matrix elements of the earlier interaction have been modified. Present interaction is able to explain new experimental results for this region.Comment: 17 pages, 13 figures. Accepted for publication in Modern Physics Letters

X-Ray Fluorescence Spectrometry in Metals and Minerals Analysis

During the last more than two decades, applications and uses of X-ray Emission Spectroscopy have multiplied many times. As because of the facts that the chemical methods require several hours and optical emission technique do not normally yield results of high absolute precision at high concentrations; the technique of X-ray fluorescence has, therefore, gained general acceptance. It has furn-ished the analyst a tool, which is capable of performing chemical analysis rapidly and non-destructively. X-ray fluorescence spectroscopy is more or less the X-ray emission spectroscopy

Recent Trends in X-Ray Fluoresence Spectrometry and its Applications in Instrumental Analysis

X-Ray Fluorescence Spectrometry is now well established as a method for obtaining rapid qualitative and quantitative elemental analysis. Quantitative determinations are made by converting peak intensity into weight percentages of the element by means of proper calibration. Of major imp-ortance is the fact that the samples are not destroyed and the analyses can be performed on solid as well as liquid samples. The study is mainly regarded with the intensity measurements of the characteristic X-radiation at fixed wavelength for the elemental analysis in a sample. The changes in the valence state of a given element can prod-uce shifts in the wavelengths of the characteristic radi- ation. L.G. Parrat resolved a shift of 2.85 XU for the sulphur Ic and K radiations when going from sulphide to sulphate sulphur.Also, the non-proportionality of X-ray Fluorescence intensity vs concentration of sulphur occurs in geological materials prepared as ground samples. Els hemier and Fabbi have found that samples containing sulphur as sulphate yield higher intensities than an equi-valent amount of sulphur as the sulphide

Evaluation of EREP techniques for geological mapping

The author has identified the following significant results. Skylab photographs may be successfully utilized for preparing a reconnaissance geological map in the areas where no maps or semi-detailed maps exist. Large coverage of area and regional perspective from Skylab photographs can help better coordination in regional mapping. It is possible to delineate major structural trends and other features like mega-lineaments, geofractures, and faults, which have evaded their detection by conventional methods. The photointerpretability is better in areas dominated by sedimentary rocks. Rock units of smaller extent and having poor geomorphic expressions are difficult to map. Demarcation of quaternary river alluvium can be made with better precision and ease with the Skylab photographs. Stereoscopic viewing greatly helps in interpretation of area structures. Skylab photographs are not good for preparing geological maps larger than 1:270,000 scale