Polar and azimuthal angular dependence of coherent to incoherent scattering differential cross-section ratios of Au at 59.54 keV

Akkuş T., Dal M., Şahin Y.

RADIATION PHYSICS AND CHEMISTRY, cilt.117, ss.167-171, 2015 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 117
  • Basım Tarihi: 2015
  • Doi Numarası: 10.1016/j.radphyschem.2015.08.014
  • Dergi Adı: RADIATION PHYSICS AND CHEMISTRY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.167-171
  • Anahtar Kelimeler: Coherent to incoherent scattering ratio, Atomic form factor, Angular dependence, EFFECTIVE ATOMIC-NUMBER, COMPTON-SCATTERING, ELEMENTS
  • Atatürk Üniversitesi Adresli: Evet

Özet

Coherent to incoherent differential cross-section ratios of Au have been measured for several polar scattering angles (90 degrees,100 degrees,110 degrees, 120 degrees and 130 degrees) and azimuthal angles (30 degrees, 20 degrees, 10 degrees, 0 degrees, -10 degrees, and -20 degrees) at 59.54 key photon energy by using high purity germanium (HPGe) detector, which has a resolution of 199.6 eV at the 5.9 keV. The samples were excited with 59.54 keV gamma rays emitted from 3.7 x 10(9) Bq (100 mCi) Am-241 point source. The intensity ratios were corrected due to the photopeak efficiency of gamma detector and absorption of photons in the target and air. The experimental values obtained in this study were compared with those estimated on the basis of the non-relativistic form factors and relativistic form factors. (C) 2015 Elsevier Ltd. All rights reserved.