Warsito Warsito, (ID SCOPUS 37079631800) Departement of Physics, Faculty of Math and Science, University of Lampung Jl. Soemantri Brodjonegoro No. 1, Bandar Lampung 35145, Indonesia

Dwi Asmi, (SCOPUS ID: 6603012521) Department of Physics, Faculty of Mathematics and Sciences, University of Lampung Jl. Soemantri Brodjonegoro No. 1, Bandar Lampung 35145, Indonesia

Azzulaini Supangat, Department of Physics, University of Malaya, Malaysia

Hasan Abu Kassim, (ID SCOPUS 15729406400) Department of Physics, University of Malaya Jalan Universiti, Kuala Lumpur 50603, Malaysia

Yanti Yulianti, (ID SCOPUS 35796765700) Departement of Physics, Faculty of Math and Science, University of Lampung Jl. Soemantri Brodjonegoro No. 1, Bandar Lampung 35145, Indonesia

Zarina Aspanut, (ID SCOPUS 35177112800) University of Malaya Jalan Universiti, Kuala Lumpur 50603, Malaysia, Malaysia

Mitrayana Mitrayana, (ID SCOPUS 56033380400) Departement of Physics, Faculty of Math and Science, Gadjah Mada University Bulaksumur, Caturtunggal, Kec. Depok, Kabupaten Sleman, Daerah Istimewa Yogyakarta 55281, Indonesia

Suryono Suryono, (ID SCOPUS 57193913176) Departemen Fisika, Universitas Diponegoro Jl.Prof.H.Soedarto S.H, Tembalang, Kota Semarang, Jawa Tengah 50275, Indonesia

Posman Manurung, (SCOPUS ID: 6507815866) Departement of Physics, Faculty of Math and Science, University of Lampung, Jl. Soemantri Brodjonegoro No. 1, Bandar Lampung 35145, Indonesia

Jatmiko Endro Suseno, (ID SCOPUS 26633274700) Departemen Fisika, Universitas Diponegoro Jl.Prof.H.Soedarto S.H, Tembalang, Kota Semarang, Jawa Tengah 50275, Indonesia

Khairurrijal Khairurrijal, (ID SCOPUS 57195339550) Departemen Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Institut Teknologi Bandung Jl. Ganesa 10, Bandung, 40132, Indonesia

Kuwat Triyana, (ID SCOPUS 8597558700) Departement of Physics, Faculty of Math and Science, Gadjah Mada University Bulaksumur, Caturtunggal, Kec. Depok, Kabupaten Sleman, Daerah Istimewa Yogyakarta 55281, Indonesia

Simon Sembiring, (SCOPUS ID: 55531950100) Departement of Physics, Faculty of Math and Science, University of Lampung Jl. Soemantri Brodjonegoro No. 1, Bandar Lampung 35145, Indonesia