Abstract
To estimate internal doses due to the inhalation of radionuclides produced by the nuclear spallation of the air nuclei in high-energy proton accelerator facilities, the physicochemical properties of radionuclides are very important. Thus, the ratio of aerosol and gases of 38Cl and 39Cl formed by irradiating argon gas-added air with a 48 MeV proton beam has been measured. Radionuclides of 38Cl and 39Cl exist as aerosol, acid gas and non-acid gas. The percentages of activity of 38Cl and 39Cl aerosols are about 80%. The number size distributions of non-radioactive aerosol were characterised by two peaks with diameters of 10-20 nm and larger than 20 nm. As a result predicted by a simple surface model, it was found that the activity size distribution of 38Cl aerosols can be regarded as that having a single peak at 120 nm.
| Original language | English |
|---|---|
| Pages (from-to) | 392-397 |
| Number of pages | 6 |
| Journal | Radiation protection dosimetry |
| Volume | 127 |
| Issue number | 1-4 |
| DOIs | |
| Publication status | Published - 01-12-2007 |
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All Science Journal Classification (ASJC) codes
- Radiological and Ultrasound Technology
- Radiation
- Radiology Nuclear Medicine and imaging
- Public Health, Environmental and Occupational Health
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Ratio of aerosol and gases of radioactive chlorine and particle size distribution of aerosol formed by high-energy proton irradiation. / Yokoyama, Sumi; Sato, K.; Manabe, K.; Noguchi, H.; Kaneko, H.; Oki, Y.; Iida, T.; Tanaka, Su.
In: Radiation protection dosimetry, Vol. 127, No. 1-4, 01.12.2007, p. 392-397.Research output: Contribution to journal › Article
TY - JOUR
T1 - Ratio of aerosol and gases of radioactive chlorine and particle size distribution of aerosol formed by high-energy proton irradiation
AU - Yokoyama, Sumi
AU - Sato, K.
AU - Manabe, K.
AU - Noguchi, H.
AU - Kaneko, H.
AU - Oki, Y.
AU - Iida, T.
AU - Tanaka, Su
PY - 2007/12/1
Y1 - 2007/12/1
N2 - To estimate internal doses due to the inhalation of radionuclides produced by the nuclear spallation of the air nuclei in high-energy proton accelerator facilities, the physicochemical properties of radionuclides are very important. Thus, the ratio of aerosol and gases of 38Cl and 39Cl formed by irradiating argon gas-added air with a 48 MeV proton beam has been measured. Radionuclides of 38Cl and 39Cl exist as aerosol, acid gas and non-acid gas. The percentages of activity of 38Cl and 39Cl aerosols are about 80%. The number size distributions of non-radioactive aerosol were characterised by two peaks with diameters of 10-20 nm and larger than 20 nm. As a result predicted by a simple surface model, it was found that the activity size distribution of 38Cl aerosols can be regarded as that having a single peak at 120 nm.
AB - To estimate internal doses due to the inhalation of radionuclides produced by the nuclear spallation of the air nuclei in high-energy proton accelerator facilities, the physicochemical properties of radionuclides are very important. Thus, the ratio of aerosol and gases of 38Cl and 39Cl formed by irradiating argon gas-added air with a 48 MeV proton beam has been measured. Radionuclides of 38Cl and 39Cl exist as aerosol, acid gas and non-acid gas. The percentages of activity of 38Cl and 39Cl aerosols are about 80%. The number size distributions of non-radioactive aerosol were characterised by two peaks with diameters of 10-20 nm and larger than 20 nm. As a result predicted by a simple surface model, it was found that the activity size distribution of 38Cl aerosols can be regarded as that having a single peak at 120 nm.
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U2 - 10.1093/rpd/ncm475
DO - 10.1093/rpd/ncm475
M3 - Article
VL - 127
SP - 392
EP - 397
JO - Radiation Protection Dosimetry
JF - Radiation Protection Dosimetry
SN - 0144-8420
IS - 1-4
ER -