Characterization of neutron spectrum at the neutron radiography of RSG-GAS reactor using a passive single-cylindrical neutron spectrometer - Rasito Tursinah; Sidik Permana; Zaki Su’ud; Alan Maulana; Abu Khalid Rivai; Muhammad Subekti; Suyatno; Achmad Ramdhani; Fahrurrozi Akbar; M. Refai Muslih; Wahyudi; Istanto; et al. (Annals of Nuclear Energy, 2025)