1. a Homi Bhabha National Institute , Raja Ramanna Centre for Advanced Technology , Indore 452013 , India
2. b Theoretical Chemistry Section , Chemistry Group, Bhabha Atomic Research Centre , Mumbai 400 085 , India
3. c BARC Training School at RRCAT , Raja Ramanna Centre for Advanced Technology , Indore 452013 , India
4. d Indus Synchrotrons Utilisation Division , Raja Ramanna Centre for Advanced Technology , Indore 452013 , India