Study of the real part (f′) of anomalous scattering factors for the elements of atomic number from Z = 64 to 73 using HPGe detector

• Published in: European physical journal plus 2013-05, Vol.128 (5), p.50, Article 50
• Main Authors: Hosur, Savita B., Naik, L. R., Badiger, N. M.
• Format: Article
• Language: English
• Subjects: Applied and Technical Physics; Atomic; Atomic properties; Beta particles; Beta rays; Bremsstrahlung; Complex Systems; Condensed Matter Physics; Gadolinium; Germanium; Mathematical and Computational Physics; Metal foils; Molecular; Nickel; Optical and Plasma Physics; Photons; Physics; Physics and Astronomy; Regular Article; Scattering; Strontium 90; Strontium radioisotopes; Theoretical
• ISSN: 2190-5444; 2190-5444
• DOI: 10.1140/epjp/i2013-13050-0

The real part ( f ′) of the anomalous scattering factors for the targets of atomic number ranging from Z = 64 to 73 (Gd, Dy, Yb, Hf and Ta) are determined using low-energy external bremsstrahlung (EB) radiations. In this method, the EB photons are produced by beta particles from a weak beta source of 90 Sr - 90 Y in a nickel foil. The emitted EB photons are incident on the elemental targets of our study and the transmitted spectrum of the emerging photons from the target is measured using an ORTEC-made High-Purity Germanium (HPGe) detector coupled to an 8 K multichannel analyzer. The transmitted spectra show a sharp decrease in intensity at the K shell binding energies of the target atoms. The regions around the decreased portion have been used to determine the real part of the anomalous scattering factors. The experimentally measured values are found to be in good agreement with the available theoretical values.