1. School of Physical Sciences, National Institute of Science Education and Research (NISER), HBNI, Bhubaneswar 752050, Odisha, India
2. SUNAG Laboratory, Institute of Physics, HBNI, Bhubaneswar 751005, Odisha, India
3. Atomic & Molecular Physics Division, Bhabha Atomic Research Centre (BARC), Mumbai 400085, India