Institution: | 1.Department of Physics, Jadavpur University, Kolkata, West Bengal, 700032, India ;2.School of Studies in Environmental Radiation and Archaeological Sciences, Jadavpur University, Kolkata, West Bengal, 700032, India ;3.Department of Physics, Sidho-Kanho-Birsha University, Purulia, West Bengal, 723104, India ;4.National Institute of Technology Sikkim, Ravangla, 737139, Sikkim, India ;5.Department of Physics, Diphu Govt. College, Diphu, 782462, Assam, India ;6.Government Model College, Deithor, Karbi Anglong, 782480, Assam, India ; |