title: Intercomparison NaI(Tl) and HPGe spectrometry to studies of natural radioactivity on geological samples.
abstract: In this study, in situ gamma spectra using NaI(Tl) detector have been compared with the laboratory measurements by using HPGe detector on geological samples. The results for measuring naturally occurring terrestrial gamma radiation of40K and the decay series of232Th and,238U respectively of both detectors show a maximum deviation about 5%. The mass activities series from both detectors were checked for coherence using proficiency test procedure from the International Atomic Energy Agency. The reliability and precision pass for final scores for all the analytical determinations of are received "acceptable" for all radionuclides.
authors: Department of Nuclear Physics, Faculty of Physics and Engineering Physics, VNUHCM-University of Science, 227, Nguyen Van Cu Street, District 5, Ho Chi Minh City, Viet Nam; Nuclear Technique Laboratory, VNUHCM-University of Science, 227, Nguyen Van Cu Street, District 5, Ho Chi Minh City, Viet Nam.
authors: Nguyen Quoc
authors: NQ
authors: Hung
authors: Nuclear Technique Laboratory, VNUHCM-University of Science, 227, Nguyen Van Cu Street, District 5, Ho Chi Minh City, Viet Nam.
authors: Huynh Dinh
authors: HD
authors: Chuong
authors: Department of Nuclear Physics, Faculty of Physics and Engineering Physics, VNUHCM-University of Science, 227, Nguyen Van Cu Street, District 5, Ho Chi Minh City, Viet Nam.
authors: Le Quang
authors: LQ
authors: Vuong
authors: Department of Nuclear Physics, Faculty of Physics and Engineering Physics, VNUHCM-University of Science, 227, Nguyen Van Cu Street, District 5, Ho Chi Minh City, Viet Nam; Nuclear Technique Laboratory, VNUHCM-University of Science, 227, Nguyen Van Cu Street, District 5, Ho Chi Minh City, Viet Nam. Electronic address: ttthanh@hcmus.edu.vn.
authors: Tran Thien
authors: TT
authors: Thanh
authors: Department of Nuclear Physics, Faculty of Physics and Engineering Physics, VNUHCM-University of Science, 227, Nguyen Van Cu Street, District 5, Ho Chi Minh City, Viet Nam; Nuclear Technique Laboratory, VNUHCM-University of Science, 227, Nguyen Van Cu Street, District 5, Ho Chi Minh City, Viet Nam.
authors: Chau Van
authors: CV
authors: Tao
mesh_terms: D007454:Iodides; D011834:Radiation Monitoring / Q000379:methods*; D011851:Radioactivity; D011868:Radioisotopes / Q000032:analysis*; D015203:Reproducibility of Results; D012964:Sodium; D013051:Spectrometry, Gamma; D013793:Thallium
chemical_list: D007454:Iodides; D011868:Radioisotopes; C477364:thallium-doped sodium iodide; D012964:Sodium; D013793:Thallium
keywords: Acceptable; IAEA; Mass activity; Proficiency test