Write the basic principle of Rutherford backscattering spectroscopy (RBS) also name the ions commonly used for primary beam in RBS.
Rutherford Backscattering Spectroscopy (RBS) is an analytical technique based on the elastic scattering of high-energy ions from the nuclei of atoms in a target material. The fundamental principle of RBS relies on the Coulombic interaction between the positively charged incident ions and the atomic nuclei in the sample. When a high-energy ion, typically in _________ ____ ___ ________ ____ _____.
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In an isotope dilution analysis experiment, radiolabelled analyte with specific activity
was added. After equilibration and chemical separation
pure analyte having specific activity
was isolated. Calculate the amount of analyte in the sample.
Explain why neutron induced reactions are most common whereas deuteron induced reactions require accelerator facility to carry out these reactions.
What is Coulometer? Explain briefly. Write cathodic and anodic reaction of hydrogen-nitrogen coulometer, where 0.1 M hydrazine sulphate is used as the electrolyte.
In a coulometric method, 200 mg of nitrobenzene in of methanol is reduced to phenyl hydroxylamine at a constant potential of -0.95 V (vs. SCE) applied to an Hg electrode. Following reaction takes 30 minutes to complete.
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Calculate the percentage of nitrobenzene if above reduction requires 32mA current.
How does atomic force microscopy (AFM) work? Explain briefly with their applications.