Method for the production of {sup 99m}Tc compositions from {sup 99}Mo-containing materials
Abstract
An improved method is described for producing {sup 99m}Tc compositions from {sup 99}Mo compounds. {sup 100}Mo metal or {sup 100}MoO{sub 3} is irradiated with photons in a particle (electron) accelerator to ultimately produce {sup 99}MoO{sub 3}. This composition is then heated in a reaction chamber to form a pool of molten {sup 99}MoO{sub 3} with an optimum depth of 0.5--5 mm. A gaseous mixture thereafter evolves from the molten {sup 99}MoO{sub 3} which contains vaporized {sup 99}MoO{sub 3}, vaporized {sup 99m}TcO{sub 3}, and vaporized {sup 99m}TcO{sub 2}. This mixture is then combined with an oxidizing gas (O{sub 2(g)}) to generate a gaseous stream containing vaporized {sup 99m}Tc{sub 2}O{sub 7} and vaporized {sup 99}MoO{sub 3}. Next, the gaseous stream is cooled in a primary condensation stage in the reaction chamber to remove vaporized {sup 99}MoO{sub 3}. Cooling is undertaken at a specially-controlled rate to achieve maximum separation efficiency. The gaseous stream is then cooled in a sequential secondary condensation stage to convert vaporized {sup 99m}Tc{sub 2}O{sub 7} into a condensed {sup 99m}Tc-containing reaction product which is collected. 1 fig.
- Inventors:
- Issue Date:
- Research Org.:
- Idaho National Laboratory (INL), Idaho Falls, ID (United States)
- Sponsoring Org.:
- USDOE, Washington, DC (United States)
- OSTI Identifier:
- 672651
- Patent Number(s):
- 5802439
- Application Number:
- PAN: 8-801,982; TRN: 99:001113
- Assignee:
- Lockheed Martin Idaho Technologies Co., Idaho Falls, ID (United States)
- DOE Contract Number:
- AC07-94ID13223
- Resource Type:
- Patent
- Resource Relation:
- Other Information: PBD: 1 Sep 1998
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 40 CHEMISTRY; TECHNETIUM 99; MOLYBDENUM 99; ISOTOPE PRODUCTION; MOLYBDENUM 100; MOLYBDENUM OXIDES; MOLTEN SALTS; DEVOLATILIZATION; TECHNETIUM OXIDES; OXIDATION; VAPOR CONDENSATION
Citation Formats
Bennett, R G, Christian, J D, Grover, S B, Petti, D A, Terry, W K, and Yoon, W Y. Method for the production of {sup 99m}Tc compositions from {sup 99}Mo-containing materials. United States: N. p., 1998.
Web.
Bennett, R G, Christian, J D, Grover, S B, Petti, D A, Terry, W K, & Yoon, W Y. Method for the production of {sup 99m}Tc compositions from {sup 99}Mo-containing materials. United States.
Bennett, R G, Christian, J D, Grover, S B, Petti, D A, Terry, W K, and Yoon, W Y. Tue .
"Method for the production of {sup 99m}Tc compositions from {sup 99}Mo-containing materials". United States.
@article{osti_672651,
title = {Method for the production of {sup 99m}Tc compositions from {sup 99}Mo-containing materials},
author = {Bennett, R G and Christian, J D and Grover, S B and Petti, D A and Terry, W K and Yoon, W Y},
abstractNote = {An improved method is described for producing {sup 99m}Tc compositions from {sup 99}Mo compounds. {sup 100}Mo metal or {sup 100}MoO{sub 3} is irradiated with photons in a particle (electron) accelerator to ultimately produce {sup 99}MoO{sub 3}. This composition is then heated in a reaction chamber to form a pool of molten {sup 99}MoO{sub 3} with an optimum depth of 0.5--5 mm. A gaseous mixture thereafter evolves from the molten {sup 99}MoO{sub 3} which contains vaporized {sup 99}MoO{sub 3}, vaporized {sup 99m}TcO{sub 3}, and vaporized {sup 99m}TcO{sub 2}. This mixture is then combined with an oxidizing gas (O{sub 2(g)}) to generate a gaseous stream containing vaporized {sup 99m}Tc{sub 2}O{sub 7} and vaporized {sup 99}MoO{sub 3}. Next, the gaseous stream is cooled in a primary condensation stage in the reaction chamber to remove vaporized {sup 99}MoO{sub 3}. Cooling is undertaken at a specially-controlled rate to achieve maximum separation efficiency. The gaseous stream is then cooled in a sequential secondary condensation stage to convert vaporized {sup 99m}Tc{sub 2}O{sub 7} into a condensed {sup 99m}Tc-containing reaction product which is collected. 1 fig.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {9}
}