1. PG and Research Department of Physics NMSSVN College Madurai Tamil Nadu India
2. UGC‐DAE CSR, Kalpakkam Node India
3. Faculté des Sciences Université de Bangui Bangui République Centrafricaine
4. Department of Physics Kalasalingam Academy of Research and Education Krishnankoil Tamil Nadu India
5. Department of Physics Sree Ayyappa College for Women Kanyakumari Tamil Nadu India