A. Fajar
Center for Technology of Nuclear Industry Materials, National Nuclear Energy Agency Puspiptek, Serpong, Tangerang 15314, Indonesia
Indonesia

Gunawan Gunawan
Center for Technology of Nuclear Industry Materials, National Nuclear Energy Agency Puspiptek, Serpong, Tangerang 15314, Indonesia
Indonesia

E. Kartini
Center for Technology of Nuclear Industry Materials, National Nuclear Energy Agency Puspiptek, Serpong, Tangerang 15314, Indonesia
Indonesia

H. Mugirahardjo
Center for Technology of Nuclear Industry Materials, National Nuclear Energy Agency Puspiptek, Serpong, Tangerang 15314, Indonesia
Indonesia

M. Ihsan
Center for Technology of Nuclear Industry Materials, National Nuclear Energy Agency Puspiptek, Serpong, Tangerang 15314, Indonesia
Indonesia