Determination of X-ray mass attenuation coefficients using HPGe detector

Mass attenuation coefficient of chromium and manganese compounds around absorption edge

“…The transmitted intensity of x-rays with and without the absorber for standard element is recorded initially by gating the channels at area under photo peak in the transmission region from 50% to 2%, and then each observed intensity was corrected for background intensity. A plot of logarithm of transmission as a function of specimen thickness yielded a straight line for the selected transmission region [21], verifying the validity of the Beer-Lambert's law. This is also confirmed with the selected compounds.…”

“…In the present work, the measurement on the photon intensity is adopted following the conditions set by Creagh and Hubbell [20] and Sharanabasappa et al [21]. The transmitted intensity of x-rays with and without the absorber for standard element is recorded initially by gating the channels at area under photo peak in the transmission region from 50% to 2%, and then each observed intensity was corrected for background intensity.…”

Studies on mass attenuation coefficient, effective atomic number and electron density of some thermoluminescent dosimetric compounds

“…Sharanabasappa et al suggested the transmission range 0.5 P T P 0.02 for the HPGe detectors[21]. The samples of thickness ranging from 0.138 to 0.425 g/ cm 2 were prepared in the form of 13 mm dia cylindrical pellets by pressing in a hand operated hydraulic press at a pressure of 8 ton.In order to irradiate the compounds at energies 30.82, 35.40, 53.16, 80.99, 276.40, 302.85, 356.01, 383.85 and 661.66 keV polyester coated 133 Ba and 137 Cs radiation sources (intensity: 10 lCi) wereused.…”

Measurement of real and imaginary form factors of silver atom using a high resolution HPGe detector

“…2 we have also shown the fitted curve using PeakFit [21] program and we have estimated I 0 from these fitted curves. It is well established by Sharanabasappa et al [22] that to measure the mass attenuation coefficient accurately using HPGe detector spectrometer, the thickness of the target must satisfy the following condition: 0.02 Transmittance 0.5 (4) where Transmittance is the fraction of incident radiation at specified energy that passes through a target. We have selected the thickness of silver foil in such way that it satisfies the condition given in Eq.…”