R. Sigit Center for Nuclear Fuel Technology, National Nuclear Energy Agency, Puspiptek Area, Serpong, Tangerang Selatan15314, Indonesia Indonesia
H. Suwarno Center for Nuclear Fuel Technology, National Nuclear Energy Agency, Puspiptek Area, Serpong, Tangerang Selatan15314, Indonesia Indonesia
B. Soegijono Department of Physics, Faculty of Mathematics and Science, University of Indonesia, Depok, West Java, Indonesia Indonesia