Investigation of radioactive radon daughters removal methods from copper surface
BackgroundCopper is one of materials often used in rare decay experiments due to its low intrinsic radioactivity. During the installation and assembly of detectors, copper parts may be exposed to air-born radon, therefore the decay daughters of radon (210Pb, 210Bi and 210Po) will be deposited on cop...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
FU Mengting [verfasserIn] WANG Siguang [verfasserIn] CHENG Chen [verfasserIn] MENG Yue [verfasserIn] QIAN Zhicheng [verfasserIn] NING Xuyang [verfasserIn] SI Lin [verfasserIn] WU Mengmeng [verfasserIn] YAO Yukun [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Chinesisch |
| Erschienen: |
2021 |
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| Übergeordnetes Werk: |
In: He jishu - Science Press, 2022, 44(2021), 2, Seite 020502-020502 |
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| Übergeordnetes Werk: |
volume:44 ; year:2021 ; number:2 ; pages:020502-020502 |
| Links: |
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| DOI / URN: |
10.11889/j.0253-3219.2021.hjs.44.020502 |
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| Katalog-ID: |
DOAJ080873677 |
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| 520 | |a BackgroundCopper is one of materials often used in rare decay experiments due to its low intrinsic radioactivity. During the installation and assembly of detectors, copper parts may be exposed to air-born radon, therefore the decay daughters of radon (210Pb, 210Bi and 210Po) will be deposited on copper surfaces, and their α, β and γ decays will result in the increase of the experimental radioactive background.PurposeThis study aims to suppress this background by carefully cleaning the radioisotopes on copper surface.MethodsFirst of all, eight pickling recipes were used to test the efficacy of 210Po removal from copper surfaces. Copper test samples were prepared by exposing to high concentration radon gas environment. Then, counting rates of deposited 210Po on copper surfaces were measured by an alpha detector before and after cleaning for the calculation of 210Po removal efficiency. The relationship between removal efficiencies and concentration of pickling cocktails were investigated and pickling recipe with the highest removal efficiency was obtained. Finally, with the highest removal efficiency pickling cocktail, the radioactivity of 232Th/238U on copper surface was measured by an inductively coupled plasma mass spectrometry (ICP-MS) to estimate the radioactive contamination level in passivation layer.ResultsMixing 5% C6H8O7 and 8% H2O2 as pickling solution can remove 99% of 210Po, and 232Th/238U concentration in passivation layer is less than ng·g-1 level.ConclusionsThis best pickling recipe found by this study can be used in rare decay experiments to remove radon daughters (210Po) from copper surfaces to suppress the background induced by radon daughters. | ||
| 650 | 4 | |a copper | |
| 650 | 4 | |a radon daughters | |
| 650 | 4 | |a α detector | |
| 650 | 4 | |a pickling and passivation | |
| 650 | 4 | |a icp-ms | |
| 653 | 0 | |a Nuclear engineering. Atomic power | |
| 700 | 0 | |a WANG Siguang |e verfasserin |4 aut | |
| 700 | 0 | |a CHENG Chen |e verfasserin |4 aut | |
| 700 | 0 | |a MENG Yue |e verfasserin |4 aut | |
| 700 | 0 | |a QIAN Zhicheng |e verfasserin |4 aut | |
| 700 | 0 | |a NING Xuyang |e verfasserin |4 aut | |
| 700 | 0 | |a SI Lin |e verfasserin |4 aut | |
| 700 | 0 | |a WU Mengmeng |e verfasserin |4 aut | |
| 700 | 0 | |a YAO Yukun |e verfasserin |4 aut | |
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10.11889/j.0253-3219.2021.hjs.44.020502 doi (DE-627)DOAJ080873677 (DE-599)DOAJd8fafe4837d74c7eaf6bf6a43025ae5b DE-627 ger DE-627 rakwb chi TK9001-9401 FU Mengting verfasserin aut Investigation of radioactive radon daughters removal methods from copper surface 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier BackgroundCopper is one of materials often used in rare decay experiments due to its low intrinsic radioactivity. During the installation and assembly of detectors, copper parts may be exposed to air-born radon, therefore the decay daughters of radon (210Pb, 210Bi and 210Po) will be deposited on copper surfaces, and their α, β and γ decays will result in the increase of the experimental radioactive background.PurposeThis study aims to suppress this background by carefully cleaning the radioisotopes on copper surface.MethodsFirst of all, eight pickling recipes were used to test the efficacy of 210Po removal from copper surfaces. Copper test samples were prepared by exposing to high concentration radon gas environment. Then, counting rates of deposited 210Po on copper surfaces were measured by an alpha detector before and after cleaning for the calculation of 210Po removal efficiency. The relationship between removal efficiencies and concentration of pickling cocktails were investigated and pickling recipe with the highest removal efficiency was obtained. Finally, with the highest removal efficiency pickling cocktail, the radioactivity of 232Th/238U on copper surface was measured by an inductively coupled plasma mass spectrometry (ICP-MS) to estimate the radioactive contamination level in passivation layer.ResultsMixing 5% C6H8O7 and 8% H2O2 as pickling solution can remove 99% of 210Po, and 232Th/238U concentration in passivation layer is less than ng·g-1 level.ConclusionsThis best pickling recipe found by this study can be used in rare decay experiments to remove radon daughters (210Po) from copper surfaces to suppress the background induced by radon daughters. copper radon daughters α detector pickling and passivation icp-ms Nuclear engineering. Atomic power WANG Siguang verfasserin aut CHENG Chen verfasserin aut MENG Yue verfasserin aut QIAN Zhicheng verfasserin aut NING Xuyang verfasserin aut SI Lin verfasserin aut WU Mengmeng verfasserin aut YAO Yukun verfasserin aut In He jishu Science Press, 2022 44(2021), 2, Seite 020502-020502 (DE-627)DOAJ078593506 02533219 nnns volume:44 year:2021 number:2 pages:020502-020502 https://doi.org/10.11889/j.0253-3219.2021.hjs.44.020502 kostenfrei https://doaj.org/article/d8fafe4837d74c7eaf6bf6a43025ae5b kostenfrei http://www.hjs.sinap.ac.cn/thesisDetails#10.11889/j.0253-3219.2021.hjs.44.020502&lang=zh kostenfrei https://doaj.org/toc/0253-3219 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ AR 44 2021 2 020502-020502 |
| spelling |
10.11889/j.0253-3219.2021.hjs.44.020502 doi (DE-627)DOAJ080873677 (DE-599)DOAJd8fafe4837d74c7eaf6bf6a43025ae5b DE-627 ger DE-627 rakwb chi TK9001-9401 FU Mengting verfasserin aut Investigation of radioactive radon daughters removal methods from copper surface 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier BackgroundCopper is one of materials often used in rare decay experiments due to its low intrinsic radioactivity. During the installation and assembly of detectors, copper parts may be exposed to air-born radon, therefore the decay daughters of radon (210Pb, 210Bi and 210Po) will be deposited on copper surfaces, and their α, β and γ decays will result in the increase of the experimental radioactive background.PurposeThis study aims to suppress this background by carefully cleaning the radioisotopes on copper surface.MethodsFirst of all, eight pickling recipes were used to test the efficacy of 210Po removal from copper surfaces. Copper test samples were prepared by exposing to high concentration radon gas environment. Then, counting rates of deposited 210Po on copper surfaces were measured by an alpha detector before and after cleaning for the calculation of 210Po removal efficiency. The relationship between removal efficiencies and concentration of pickling cocktails were investigated and pickling recipe with the highest removal efficiency was obtained. Finally, with the highest removal efficiency pickling cocktail, the radioactivity of 232Th/238U on copper surface was measured by an inductively coupled plasma mass spectrometry (ICP-MS) to estimate the radioactive contamination level in passivation layer.ResultsMixing 5% C6H8O7 and 8% H2O2 as pickling solution can remove 99% of 210Po, and 232Th/238U concentration in passivation layer is less than ng·g-1 level.ConclusionsThis best pickling recipe found by this study can be used in rare decay experiments to remove radon daughters (210Po) from copper surfaces to suppress the background induced by radon daughters. copper radon daughters α detector pickling and passivation icp-ms Nuclear engineering. Atomic power WANG Siguang verfasserin aut CHENG Chen verfasserin aut MENG Yue verfasserin aut QIAN Zhicheng verfasserin aut NING Xuyang verfasserin aut SI Lin verfasserin aut WU Mengmeng verfasserin aut YAO Yukun verfasserin aut In He jishu Science Press, 2022 44(2021), 2, Seite 020502-020502 (DE-627)DOAJ078593506 02533219 nnns volume:44 year:2021 number:2 pages:020502-020502 https://doi.org/10.11889/j.0253-3219.2021.hjs.44.020502 kostenfrei https://doaj.org/article/d8fafe4837d74c7eaf6bf6a43025ae5b kostenfrei http://www.hjs.sinap.ac.cn/thesisDetails#10.11889/j.0253-3219.2021.hjs.44.020502&lang=zh kostenfrei https://doaj.org/toc/0253-3219 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ AR 44 2021 2 020502-020502 |
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10.11889/j.0253-3219.2021.hjs.44.020502 doi (DE-627)DOAJ080873677 (DE-599)DOAJd8fafe4837d74c7eaf6bf6a43025ae5b DE-627 ger DE-627 rakwb chi TK9001-9401 FU Mengting verfasserin aut Investigation of radioactive radon daughters removal methods from copper surface 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier BackgroundCopper is one of materials often used in rare decay experiments due to its low intrinsic radioactivity. During the installation and assembly of detectors, copper parts may be exposed to air-born radon, therefore the decay daughters of radon (210Pb, 210Bi and 210Po) will be deposited on copper surfaces, and their α, β and γ decays will result in the increase of the experimental radioactive background.PurposeThis study aims to suppress this background by carefully cleaning the radioisotopes on copper surface.MethodsFirst of all, eight pickling recipes were used to test the efficacy of 210Po removal from copper surfaces. Copper test samples were prepared by exposing to high concentration radon gas environment. Then, counting rates of deposited 210Po on copper surfaces were measured by an alpha detector before and after cleaning for the calculation of 210Po removal efficiency. The relationship between removal efficiencies and concentration of pickling cocktails were investigated and pickling recipe with the highest removal efficiency was obtained. Finally, with the highest removal efficiency pickling cocktail, the radioactivity of 232Th/238U on copper surface was measured by an inductively coupled plasma mass spectrometry (ICP-MS) to estimate the radioactive contamination level in passivation layer.ResultsMixing 5% C6H8O7 and 8% H2O2 as pickling solution can remove 99% of 210Po, and 232Th/238U concentration in passivation layer is less than ng·g-1 level.ConclusionsThis best pickling recipe found by this study can be used in rare decay experiments to remove radon daughters (210Po) from copper surfaces to suppress the background induced by radon daughters. copper radon daughters α detector pickling and passivation icp-ms Nuclear engineering. Atomic power WANG Siguang verfasserin aut CHENG Chen verfasserin aut MENG Yue verfasserin aut QIAN Zhicheng verfasserin aut NING Xuyang verfasserin aut SI Lin verfasserin aut WU Mengmeng verfasserin aut YAO Yukun verfasserin aut In He jishu Science Press, 2022 44(2021), 2, Seite 020502-020502 (DE-627)DOAJ078593506 02533219 nnns volume:44 year:2021 number:2 pages:020502-020502 https://doi.org/10.11889/j.0253-3219.2021.hjs.44.020502 kostenfrei https://doaj.org/article/d8fafe4837d74c7eaf6bf6a43025ae5b kostenfrei http://www.hjs.sinap.ac.cn/thesisDetails#10.11889/j.0253-3219.2021.hjs.44.020502&lang=zh kostenfrei https://doaj.org/toc/0253-3219 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ AR 44 2021 2 020502-020502 |
| allfieldsGer |
10.11889/j.0253-3219.2021.hjs.44.020502 doi (DE-627)DOAJ080873677 (DE-599)DOAJd8fafe4837d74c7eaf6bf6a43025ae5b DE-627 ger DE-627 rakwb chi TK9001-9401 FU Mengting verfasserin aut Investigation of radioactive radon daughters removal methods from copper surface 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier BackgroundCopper is one of materials often used in rare decay experiments due to its low intrinsic radioactivity. During the installation and assembly of detectors, copper parts may be exposed to air-born radon, therefore the decay daughters of radon (210Pb, 210Bi and 210Po) will be deposited on copper surfaces, and their α, β and γ decays will result in the increase of the experimental radioactive background.PurposeThis study aims to suppress this background by carefully cleaning the radioisotopes on copper surface.MethodsFirst of all, eight pickling recipes were used to test the efficacy of 210Po removal from copper surfaces. Copper test samples were prepared by exposing to high concentration radon gas environment. Then, counting rates of deposited 210Po on copper surfaces were measured by an alpha detector before and after cleaning for the calculation of 210Po removal efficiency. The relationship between removal efficiencies and concentration of pickling cocktails were investigated and pickling recipe with the highest removal efficiency was obtained. Finally, with the highest removal efficiency pickling cocktail, the radioactivity of 232Th/238U on copper surface was measured by an inductively coupled plasma mass spectrometry (ICP-MS) to estimate the radioactive contamination level in passivation layer.ResultsMixing 5% C6H8O7 and 8% H2O2 as pickling solution can remove 99% of 210Po, and 232Th/238U concentration in passivation layer is less than ng·g-1 level.ConclusionsThis best pickling recipe found by this study can be used in rare decay experiments to remove radon daughters (210Po) from copper surfaces to suppress the background induced by radon daughters. copper radon daughters α detector pickling and passivation icp-ms Nuclear engineering. Atomic power WANG Siguang verfasserin aut CHENG Chen verfasserin aut MENG Yue verfasserin aut QIAN Zhicheng verfasserin aut NING Xuyang verfasserin aut SI Lin verfasserin aut WU Mengmeng verfasserin aut YAO Yukun verfasserin aut In He jishu Science Press, 2022 44(2021), 2, Seite 020502-020502 (DE-627)DOAJ078593506 02533219 nnns volume:44 year:2021 number:2 pages:020502-020502 https://doi.org/10.11889/j.0253-3219.2021.hjs.44.020502 kostenfrei https://doaj.org/article/d8fafe4837d74c7eaf6bf6a43025ae5b kostenfrei http://www.hjs.sinap.ac.cn/thesisDetails#10.11889/j.0253-3219.2021.hjs.44.020502&lang=zh kostenfrei https://doaj.org/toc/0253-3219 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ AR 44 2021 2 020502-020502 |
| allfieldsSound |
10.11889/j.0253-3219.2021.hjs.44.020502 doi (DE-627)DOAJ080873677 (DE-599)DOAJd8fafe4837d74c7eaf6bf6a43025ae5b DE-627 ger DE-627 rakwb chi TK9001-9401 FU Mengting verfasserin aut Investigation of radioactive radon daughters removal methods from copper surface 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier BackgroundCopper is one of materials often used in rare decay experiments due to its low intrinsic radioactivity. During the installation and assembly of detectors, copper parts may be exposed to air-born radon, therefore the decay daughters of radon (210Pb, 210Bi and 210Po) will be deposited on copper surfaces, and their α, β and γ decays will result in the increase of the experimental radioactive background.PurposeThis study aims to suppress this background by carefully cleaning the radioisotopes on copper surface.MethodsFirst of all, eight pickling recipes were used to test the efficacy of 210Po removal from copper surfaces. Copper test samples were prepared by exposing to high concentration radon gas environment. Then, counting rates of deposited 210Po on copper surfaces were measured by an alpha detector before and after cleaning for the calculation of 210Po removal efficiency. The relationship between removal efficiencies and concentration of pickling cocktails were investigated and pickling recipe with the highest removal efficiency was obtained. Finally, with the highest removal efficiency pickling cocktail, the radioactivity of 232Th/238U on copper surface was measured by an inductively coupled plasma mass spectrometry (ICP-MS) to estimate the radioactive contamination level in passivation layer.ResultsMixing 5% C6H8O7 and 8% H2O2 as pickling solution can remove 99% of 210Po, and 232Th/238U concentration in passivation layer is less than ng·g-1 level.ConclusionsThis best pickling recipe found by this study can be used in rare decay experiments to remove radon daughters (210Po) from copper surfaces to suppress the background induced by radon daughters. copper radon daughters α detector pickling and passivation icp-ms Nuclear engineering. Atomic power WANG Siguang verfasserin aut CHENG Chen verfasserin aut MENG Yue verfasserin aut QIAN Zhicheng verfasserin aut NING Xuyang verfasserin aut SI Lin verfasserin aut WU Mengmeng verfasserin aut YAO Yukun verfasserin aut In He jishu Science Press, 2022 44(2021), 2, Seite 020502-020502 (DE-627)DOAJ078593506 02533219 nnns volume:44 year:2021 number:2 pages:020502-020502 https://doi.org/10.11889/j.0253-3219.2021.hjs.44.020502 kostenfrei https://doaj.org/article/d8fafe4837d74c7eaf6bf6a43025ae5b kostenfrei http://www.hjs.sinap.ac.cn/thesisDetails#10.11889/j.0253-3219.2021.hjs.44.020502&lang=zh kostenfrei https://doaj.org/toc/0253-3219 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ AR 44 2021 2 020502-020502 |
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During the installation and assembly of detectors, copper parts may be exposed to air-born radon, therefore the decay daughters of radon (210Pb, 210Bi and 210Po) will be deposited on copper surfaces, and their α, β and γ decays will result in the increase of the experimental radioactive background.PurposeThis study aims to suppress this background by carefully cleaning the radioisotopes on copper surface.MethodsFirst of all, eight pickling recipes were used to test the efficacy of 210Po removal from copper surfaces. Copper test samples were prepared by exposing to high concentration radon gas environment. Then, counting rates of deposited 210Po on copper surfaces were measured by an alpha detector before and after cleaning for the calculation of 210Po removal efficiency. The relationship between removal efficiencies and concentration of pickling cocktails were investigated and pickling recipe with the highest removal efficiency was obtained. Finally, with the highest removal efficiency pickling cocktail, the radioactivity of 232Th/238U on copper surface was measured by an inductively coupled plasma mass spectrometry (ICP-MS) to estimate the radioactive contamination level in passivation layer.ResultsMixing 5% C6H8O7 and 8% H2O2 as pickling solution can remove 99% of 210Po, and 232Th/238U concentration in passivation layer is less than ng·g-1 level.ConclusionsThis best pickling recipe found by this study can be used in rare decay experiments to remove radon daughters (210Po) from copper surfaces to suppress the background induced by radon daughters.</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">copper</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">radon daughters</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">α detector</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">pickling and passivation</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">icp-ms</subfield></datafield><datafield tag="653" ind1=" " ind2="0"><subfield code="a">Nuclear engineering. 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FU Mengting WANG Siguang CHENG Chen MENG Yue QIAN Zhicheng NING Xuyang SI Lin WU Mengmeng YAO Yukun |
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Investigation of radioactive radon daughters removal methods from copper surface |
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BackgroundCopper is one of materials often used in rare decay experiments due to its low intrinsic radioactivity. During the installation and assembly of detectors, copper parts may be exposed to air-born radon, therefore the decay daughters of radon (210Pb, 210Bi and 210Po) will be deposited on copper surfaces, and their α, β and γ decays will result in the increase of the experimental radioactive background.PurposeThis study aims to suppress this background by carefully cleaning the radioisotopes on copper surface.MethodsFirst of all, eight pickling recipes were used to test the efficacy of 210Po removal from copper surfaces. Copper test samples were prepared by exposing to high concentration radon gas environment. Then, counting rates of deposited 210Po on copper surfaces were measured by an alpha detector before and after cleaning for the calculation of 210Po removal efficiency. The relationship between removal efficiencies and concentration of pickling cocktails were investigated and pickling recipe with the highest removal efficiency was obtained. Finally, with the highest removal efficiency pickling cocktail, the radioactivity of 232Th/238U on copper surface was measured by an inductively coupled plasma mass spectrometry (ICP-MS) to estimate the radioactive contamination level in passivation layer.ResultsMixing 5% C6H8O7 and 8% H2O2 as pickling solution can remove 99% of 210Po, and 232Th/238U concentration in passivation layer is less than ng·g-1 level.ConclusionsThis best pickling recipe found by this study can be used in rare decay experiments to remove radon daughters (210Po) from copper surfaces to suppress the background induced by radon daughters. |
| abstractGer |
BackgroundCopper is one of materials often used in rare decay experiments due to its low intrinsic radioactivity. During the installation and assembly of detectors, copper parts may be exposed to air-born radon, therefore the decay daughters of radon (210Pb, 210Bi and 210Po) will be deposited on copper surfaces, and their α, β and γ decays will result in the increase of the experimental radioactive background.PurposeThis study aims to suppress this background by carefully cleaning the radioisotopes on copper surface.MethodsFirst of all, eight pickling recipes were used to test the efficacy of 210Po removal from copper surfaces. Copper test samples were prepared by exposing to high concentration radon gas environment. Then, counting rates of deposited 210Po on copper surfaces were measured by an alpha detector before and after cleaning for the calculation of 210Po removal efficiency. The relationship between removal efficiencies and concentration of pickling cocktails were investigated and pickling recipe with the highest removal efficiency was obtained. Finally, with the highest removal efficiency pickling cocktail, the radioactivity of 232Th/238U on copper surface was measured by an inductively coupled plasma mass spectrometry (ICP-MS) to estimate the radioactive contamination level in passivation layer.ResultsMixing 5% C6H8O7 and 8% H2O2 as pickling solution can remove 99% of 210Po, and 232Th/238U concentration in passivation layer is less than ng·g-1 level.ConclusionsThis best pickling recipe found by this study can be used in rare decay experiments to remove radon daughters (210Po) from copper surfaces to suppress the background induced by radon daughters. |
| abstract_unstemmed |
BackgroundCopper is one of materials often used in rare decay experiments due to its low intrinsic radioactivity. During the installation and assembly of detectors, copper parts may be exposed to air-born radon, therefore the decay daughters of radon (210Pb, 210Bi and 210Po) will be deposited on copper surfaces, and their α, β and γ decays will result in the increase of the experimental radioactive background.PurposeThis study aims to suppress this background by carefully cleaning the radioisotopes on copper surface.MethodsFirst of all, eight pickling recipes were used to test the efficacy of 210Po removal from copper surfaces. Copper test samples were prepared by exposing to high concentration radon gas environment. Then, counting rates of deposited 210Po on copper surfaces were measured by an alpha detector before and after cleaning for the calculation of 210Po removal efficiency. The relationship between removal efficiencies and concentration of pickling cocktails were investigated and pickling recipe with the highest removal efficiency was obtained. Finally, with the highest removal efficiency pickling cocktail, the radioactivity of 232Th/238U on copper surface was measured by an inductively coupled plasma mass spectrometry (ICP-MS) to estimate the radioactive contamination level in passivation layer.ResultsMixing 5% C6H8O7 and 8% H2O2 as pickling solution can remove 99% of 210Po, and 232Th/238U concentration in passivation layer is less than ng·g-1 level.ConclusionsThis best pickling recipe found by this study can be used in rare decay experiments to remove radon daughters (210Po) from copper surfaces to suppress the background induced by radon daughters. |
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WANG Siguang CHENG Chen MENG Yue QIAN Zhicheng NING Xuyang SI Lin WU Mengmeng YAO Yukun |
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