1. Research scholar, Department of Physics, St. Jude’s College, Thoothoor, Affiliated to Manonmanium Sundaranar University, Abishekapatti, Tirunelveli, Tamil Nadu, India
2. Department of Physics, Sree Ayyappa College for Women, Chunkankadai, Nagercoil, Tamil Nadu, India
3. Department of Physics, St. Jude’s College, Thoothoor, Kanyakumari District, Tamil Nadu, India
4. PG and Research Department of Physics, N.M.S.S.V.N. College, Madurai, Tamil Nadu, India