About the Authors

Aminul Islam

Physical Instrument Division, BCSIR Laboratories Dhaka. BCSIR, Dhanmondi, Dhaka, Bangladesh

Md. Shahjahan

Industrial Physics Division, BCSIR Laboratories Dhaka. BCSIR, Dhanmondi, Dhaka, Bangladesh

R.H. Khan

Department of Applied Physics, Electronics and Communication Engineering, University of Chittagong, Chittagong

A. Kashem

Physical Instrument Division, BCSIR Laboratories Dhaka. BCSIR, Dhanmondi, Dhaka, Bangladesh

K. N. Babi

Physical Instrument Division, BCSIR Laboratories Dhaka. BCSIR, Dhanmondi, Dhaka, Bangladesh

Corresponding Author

Email: shahjahanphysics@gmail.com