Radioactive aerosol particles released from a pneumatic irradiation system in a nuclear research reactor
- 1. Kyoto Univ., Kumatori, Osaka (Japan). Research Reactor Inst.
- 2. Kyoto Univ. (Japan). Faculty of Engineering
- 3. Kyoto Univ. (Japan). Graduate School of Engineering
Description
Particle size distribution of activity was investigated with an impactor for airborne particles released from a pneumatic irradiation system of a research reactor. Airborne radioactivity released from the pneumatic tube of the reactor was identified as 24Na, 38Cl, and 56Mn and various fission products of which origin was uranium impurity in aluminum used in the part of the pneumatic tube. The AMAD (activity median aerodynamic diameter) of 24Na and 56Mn that were produced through (n, γ) reactions was ca. 1 μm, while that of fission products was ca. 0.4 μm. It was suggested that radioactive particles of ca. 1 μm were due to activation of aluminum dust in the pneumatic tube, and that the particles of ca. 0.4 μm were formed by attachment of recoiled fission products to radiation-induced airborne particles. (orig.)
Additional details
Publishing Information
- Journal Title
- Proceedings in Radiochemistry
- Journal Volume
- 1
- Journal Page Range
- p. 245-249
- ISSN
- 2193-2875
Conference
- Title
- 4. international conference in the series of Asia-Pacific symposium on radiochemistry
- Acronym
- APSORC-09
- Dates
- 29 Nov - 4 Dec 2009
- Place
- Napa, CA (United States)
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 44061052
- Subject category
- S38: RADIATION CHEMISTRY, RADIOCHEMISTRY AND NUCLEAR CHEMISTRY; S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- AEROSOLS; ALUMINIUM; CHLORINE 38; FISSION PRODUCT RELEASE; FISSION PRODUCTS; GAMMA RADIATION; GAMMA SPECTROSCOPY; IMPURITIES; IRRADIATION DEVICES; MANGANESE 56; NEUTRON REACTIONS; PARTICLE SIZE; PHOTONUCLEAR REACTIONS; PNEUMATIC TRANSPORT; RADIOACTIVE MATERIALS; RADIOCHEMICAL ANALYSIS; RECOILS; RESEARCH REACTORS; SODIUM 24; URANIUM
- Descriptors DEC
- ACTINIDES; BARYON REACTIONS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; CHEMICAL ANALYSIS; CHLORINE ISOTOPES; COLLOIDS; DISPERSIONS; ELECTROMAGNETIC RADIATION; ELEMENTS; HADRON REACTIONS; HOURS LIVING RADIOISOTOPES; INTERMEDIATE MASS NUCLEI; IONIZING RADIATIONS; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; LIGHT NUCLEI; MANGANESE ISOTOPES; MATERIALS; METALS; MILLISECONDS LIVING RADIOISOTOPES; MINUTES LIVING RADIOISOTOPES; NUCLEAR REACTIONS; NUCLEI; NUCLEON REACTIONS; ODD-ODD NUCLEI; QUANTITATIVE CHEMICAL ANALYSIS; RADIATIONS; RADIOACTIVE MATERIALS; RADIOISOTOPES; REACTORS; RESEARCH AND TEST REACTORS; SECONDS LIVING RADIOISOTOPES; SIZE; SODIUM ISOTOPES; SOLS; SPECTROSCOPY; TRANSPORT