International Journal of
Physical Sciences

  • Abbreviation: Int. J. Phys. Sci.
  • Language: English
  • ISSN: 1992-1950
  • DOI: 10.5897/IJPS
  • Start Year: 2006
  • Published Articles: 2557

Full Length Research Paper

Calculation of gamma-ray spectroscopy of pg9/2+ isomers in 69,71,73,75,77,79As nuclei

I. Hossain1,3*, J. Islam3, N. N. A. M. A. Ghani1, M. E. Hoque4, K. K. Viswanathan2, H. Y. Abdullah1,6, M. A. Saeed1, M. H. Al-Monthery1 and I. M. Ahmed5
  1Department of Physics, University Teknologi Malaysia, 81310 Skudai, Johor, Malaysia. 2Department of Mathematics, University Teknologi Malaysia, 81310 Skudai, Johor, Malaysia. 3Department of Physics, Shah Jalal University of Science and Technology, Sylhet 3114, Bangladesh 4Department of Physics, Jahangirnagar University, Dhaka 3114, Bangladesh. 5Department of Physics, College of Education, Mosul University, Koya, Erbil, Iraq. 6Department of Physics, College of Science Education, Salahaddin University, Erbil, Krg, Iraq.
Email: [email protected]

  •  Accepted: 02 June 2011
  •  Published: 31 July 2011



We have calculated binding energy, reduced transition probabilities and deformation parameter in 69,71,73,75,77,79As nuclei. The energies of projectile-like fragments and Q-value in 76Ge (635 MeV) + 198Pt reactions are also calculated. The theoretical calculations of projectile like fragments (PLFs) energies are compared with the experimental values. The systematic energies for 9/2+ 5/2- de-excitation of those nuclei indicate maximum deformation at N=42. The decrease in excitation level of the 9/2+ state from 69As to 79As provides some evidence for decreasing quadruple  “softness” towards the closed neutron shell at N = 40. We have reported single and coincidence g-ray spectroscopy of 79As by deep-inelastic collision 76Ge (635 MeV) + 198Pt. The systematic isomeric level and reduced transition probabilities of 69,71,73,75,77,79As nuclei have been investigated.


Key words: Q-value, reduced transition probabilities, projectile like fragments.