Defects & Damage Studies Division


  • Defects and Damage Studies Division (DDSD) focuses on studies on defects, defect-impurity interactions in reactor structural materials, supplemented by computations. Ion beam radiation damage studies are carried out using a 1.7 MV tandem accelerator and a 400 keV in-house built linear accelerator either in single or dual ion beam modes of irradiation to study defects and radiation response in materials of relevance for fusion and fission reactors. Defects, in particular open volume defects such as vacancies and their clusters are studied using positron annihilation spectroscopy.

  • Positron beam based Doppler broadening studies have been used mainly for depth resolved defects studies in irradiated materials. Ion beam based characterization techniques such as high resolution RBS, channeling are being used extensively in addition to ion beam induced luminescence studies. Irradiation creep studies are being planned with proton beam of energy 2-3 MeV and high beam current. Various experimental results related to defects are analyzed using detailed computations with a variety of simulation and ab-initio codes. High speed cluster computers at IGCAR are being extensively utilized for computation of materials properties.
  • Achievements



  • XRD
  • Microscopic Characterisation :SEM & TEM
  • RBS (Rutherford Backscattering Spectrometry), Ion Channeling (depth profiling, lattice locations of impurities)
  • Spectrometer for Iono luminescence
  • Scanning Tunneling Microscopy (atomic resolution topography)
  • Defect characterisation
    • Positron lifetime spectrometer
    • Coincidence Doppler Spectrometer
  • Variable low energy positron beam for depth resolved defects studies
  • Mossbauer & TDPAC spectrometers for local structural & magnetic properties
  • Auger Electron spectroscopy
  • Fourier Transform Infrared (FTIR) Spectroscopy
  • Entangled photon source for quantum information studies
  • Femto second spectrometer