Manufacturing and characterization of molybdenum pellets used as targets for 99m Tc production in cyclotron.

Autor: Cieszykowska I; National Centre for Nuclear Research, Radioisotope Centre POLATOM, 05-400 Otwock, Poland. Electronic address: izabela.cieszykowska@polatom.pl., Janiak T; National Centre for Nuclear Research, Radioisotope Centre POLATOM, 05-400 Otwock, Poland., Barcikowski T; National Centre for Nuclear Research, Radioisotope Centre POLATOM, 05-400 Otwock, Poland., Mielcarski M; National Centre for Nuclear Research, Radioisotope Centre POLATOM, 05-400 Otwock, Poland., Mikołajczak R; National Centre for Nuclear Research, Radioisotope Centre POLATOM, 05-400 Otwock, Poland., Choiński J; Heavy Ion Laboratory, University of Warsaw, 02-093 Warsaw, Poland., Barlak M; National Centre for Nuclear Research, Plasma/Ion Beam Technology Division, 05-400 Otwock, Poland., Kurpaska Ł; National Centre for Nuclear Research, Material Research Lab., 05-400 Otwock, Poland.
Jazyk: angličtina
Zdroj: Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine [Appl Radiat Isot] 2017 Jun; Vol. 124, pp. 124-131. Date of Electronic Publication: 2017 Mar 10.
DOI: 10.1016/j.apradiso.2017.03.006
Abstrakt: The method of 100 Mo metallic target preparation for production of 99m Tc by proton irradiation in 100 Mo(p,2n) 99m Tc reaction was demonstrated. For this purpose, pressing of molybdenum powder into pellets and their subsequent sintering in reductive atmosphere were applied. The influence of parameters such as molybdenum mass and time of both pressing and sintering on the 100 Mo target durability was investigated. Under the optimized conditions, 100 Mo metallic pellet targets with density of 9.95±0.06g/cm 3 were obtained. Morphology and structure of pressed pellets before and after sintering were studied by using standard optical microscope and Scanning Electron Microscope (SEM). Nanoindentation technique was used to investigate the mechanical properties such as nanohardness and Young modulus. Prepared 100 Mo pellets were successfully irradiated with protons and 99m Tc was efficiently isolated.
(Copyright © 2017 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
Externí odkaz: