The study intends to measure the transmission of gamma rays such as 137Cs, throughrnAluminium, Iron, Nickel, Copper, Tin, and lead absorbers using gamma ray spectroscopyrntechniques. Electrical pulses, carrying the physical information is displayed on the computerrnscreen with the number of channels on the horizontal scale and number of pulsesrnon the vertical scale. The multichannel Analyzer will then process there pulses, whichrnare digitized.rnThe total linear attenuation coefficient (Î¼) of 662Kev gamma rays have been measuredrnin the extended media of six elements under different geometry condition and using HPGernand NaI(Tl) detectors. Better result of total linear attenuation coefficient is obtained whenrnan absorber near to a detector and using HPGe detector. This is due to the decreases inrnthe exposure of the detector to the beams of gamma rays and high resolution power ofrnHPGe detector respectively.rnIt also aims to determine the total linear attenuation coefficients for Tin using thernenergy of photons 122kev, 662kev, 1172kev, and 1332kev and to evaluate how it varies asrna function of gamma rays energy. The result generally agree with theoretical calculations.rnSome discrepancies can be explained by the collimation, media and geometry of absorber.rnThe dependence of cross-section on the atomic number and the energies of gamma rayrnis also seen due to the increases of binding energy and penetration power of gamma ray