DOI QR코드

DOI QR Code

Experimental investigation of effective atomic numbers for some binary alloys

  • Sharma, Renu (Physics Department, Maharishi Markandeshwar University) ;
  • Sharma, J.K. (Physics Department, Maharishi Markandeshwar University) ;
  • Kaur, Taranjot (Physics Department, Sri Guru Granth Sahib World University) ;
  • Singh, Tejbir (Physics Department, Sri Guru Granth Sahib World University) ;
  • Sharma, Jeewan (Nanotechnology Department, Sri Guru Granth Sahib World University) ;
  • Singh, Parjit S. (Physics Department, Punjabi University)
  • Received : 2016.04.22
  • Accepted : 2017.06.04
  • Published : 2017.10.25

Abstract

In the present work, the gamma ray backscattering technique was used to determine the effective atomic numbers for certain binary alloys. With the help of a muffle furnace, the binary alloys were synthesized using the melt quenching technique with different compositions of $_{82}Pb$, $_{50}Sn$, and $_{30}Zn$. The intensity distribution of backscattered photons from radioactive isotope $^{22}Na$ (511 keV) was recorded with the help of GAMMARAD5 [$76mm{\times}76mm$ NaI(Tl) scintillator detector] and analyzed as a function of both atomic number and thickness of the target material. The effective atomic numbers for the same binary alloys were also computed theoretically using the atomic to electronic cross-section method with the help of the mass attenuation coefficient database of WinXCom (2001). Good agreement was observed between theoretical and experimental results for the effective atomic numbers of all the selected alloys.

Acknowledgement

Supported by : Science and Engineering Research Board (SERB)

References

  1. C. Udagani, Study of gamma backscattering and saturation thickness estimation for granite and glass, Int. J. Eng. Sci. Invention 2 (2013) 86-89.
  2. I.L.M. Silva, R.T. Lopes, E.F.O. de Jesus, Tube defects inspection technique by Compton gamma backscattering, Nucl. Instrum. Methods Phys. Res. A 422 (1999) 957-963. https://doi.org/10.1016/S0168-9002(98)01052-3
  3. S.A. Majid, A. Balamesh, Imaging corrosion under insulation by gamma ray backscattering Method, in: Middle East Non-destructive Testing Conference & Exhibition, 27-30 Nov 2005. Bahrain, Manama.
  4. K. Preiss, R. Livnat, The distribution of backscattered gamma ray photons in the scattering medium, Nucl. Eng. Des. 24 (1973) 258-262. https://doi.org/10.1016/0029-5493(73)90078-2
  5. A.D. Sabharwal, B. Singh, B.S. Sandhu, Investigations of multiple backscattering and albedos of 1.12 MeV gamma rays in aluminium, Nucl. Instrum. Methods Phys. Res. B 267 (2009) 151-156. https://doi.org/10.1016/j.nimb.2008.10.072
  6. T. Hyodo, Backscattering of gamma rays, Nucl. Sci. Eng. 12 (1962) 178-184. https://doi.org/10.13182/NSE62-A26056
  7. A.D. Sabharwal, B. Singh, B.S. Sandhu, Investigations of effect of target thickness and detector collimation on 662 keV multiply backscattered gamma photons, Radiat. Meas. 44 (2009) 411-414. https://doi.org/10.1016/j.radmeas.2009.06.010
  8. A.D. Sabharwal, B. Singh, B.S. Sandhu, Investigations of energy dependence of saturation thickness of multiply backscattered gamma photons in carbon, Asian J. Chem. 21 (2009) S237-S241.
  9. G. Singh, M. Singh, B.S. Sandhu, B. Singh, Experimental investigation of multiple scattering of 662 keV gamma rays in zinc at $90^{\circ}$, Radiat. Phys. Chem. 76 (2007) 750-758. https://doi.org/10.1016/j.radphyschem.2006.08.010
  10. D.B. Pozdneyev, Back-scattering of low-energy gamma rays, J. Nucl. Energy 21 (1967) 197-204. https://doi.org/10.1016/0022-3107(67)90129-3
  11. M.J. Berger, J.H. Hubbell, XCOM: Photon Cross Sections on a Personal Computer, NBSIR87-3597 [Internet], NIST, Gaithersburg, MD, 1987 (1995). Available from: http://www.physics.nist.gov/xcom.
  12. L. Gerward, N. Guilbert, K. Bjorn Jensen, H. Levring, X-ray absorption in matter. Reengineering XCOM, Radiat. Phys. Chem. 60 (2001) 23-24. https://doi.org/10.1016/S0969-806X(00)00324-8