Department of Nuclear and Atomic Physics Seminars

Resonances in low-energy electron scattering with small biomolecules: study by R-matrix method

by Dr. Amar Kumar Dora (DNAP, TIFR)

Thursday, November 29, 2012 from to (Asia/Kolkata)
at Colaba Campus ( P305 )
Description It has been demonstrated that low-energy electrons (below ionization threshold) can cause single and double strand breaks in DNA [1] at specific incident energies that reflect resonant processes. As it is not easy to identify and characterize these resonances in a big molecule like DNA, a step in the right direction would be to characterize the possible resonances in various constituent of DNA like the Nucleic acid bases [2, 3] and the phosphate group. In this talk I will speak about our scattering calculations using the UK polyatomic R-matrix code [4].
References
[1] B. Boudaïfa, P. Cloutier, D. Hunting, M. A. Huels, and L. Sanche, Science 287, 1658 (2000)
[2] A. Dora, J. Tennyson, L. Bryjko and T. van Mourik, J. Chem. Phys., 130, 164307 (2009).
[3 ] A. Dora, L. Bryjko, T. van Mourik and J. Tennyson, J. Phys. B: At. Mol.Opt. Phys.,45,
      175203 (2012).
[4] L. A. Morgan, J. Tennyson, and C. J. Gillan, Comp. Phys. Comm. 114, 120-128 (1998).

Organised by Dr. Vaibhav Prabhudesai