㻌 䠄䠏䠅㻌 ⇕⺯ගయ䜢฼⏝䛧䛯୰ᛶᏊ⥺䞉䃒⥺ᘚู ᐃἲ䛻㛵䛩䜛◊✲㻌

㻌 䠄䠏䠅㻌 ⇕⺯ගయ䜢฼⏝䛧䛯୰ᛶᏊ⥺䞉䃒⥺ᘚู ᐃἲ䛻㛵䛩䜛◊✲㻌

㻌 㤳㒔኱Ꮫᮾி኱Ꮫ㝔㻌 㻌

ே㛫೺ᗣ⛉Ꮫ◊✲⛉㻌

┾ṇ㻌ίග䚸ᰡ⃝㻌ఙ䚸୸ᒣ㻌኱ᶞ䚸㻌

ୗᮧ㻌⌮⣪䚸㧘ᮌ㻌▖㻌 㻌 ஑ᕞ኱Ꮫ኱Ꮫ㝔㻌

་Ꮫ◊✲㝔㻌

㻌

⣡෠㻌᫛ᘯ㻌 㻌 㔞◊ᶵᵓᨺ་◊㻌

ᨺᑕ⥺㜵ㆤ᝟ሗ⤫ྜ䝉䞁䝍䞊㻌 㻌

ྂሙ㻌⿱௓㻌 㻌 ㏆␥኱Ꮫ㻌 ཎᏊຊ◊✲ᡤ㻌 ⱝᯘ㻌※୍㑻㻌 㻌

䛊䛿䛨䜑䛻䛋㻌

䝩䜴⣲୰ᛶᏊ⿵㊊⒪ἲ䠄㻮㻺㻯㼀䠅䛿䚸䛜䜣⣽⬊䜢㑅ᢥⓗ䛻ᶆⓗ໬䛧䛯䝩䜴⣲⸆๣䛸୰ᛶᏊ䛸䛾཯ᛂ 䜢฼⏝䛧䛯᪂䛯䛺ᨺᑕ⥺἞⒪䛾୍䛴䛷䛒䜛䚹䛜䜣䜢㑅ᢥⓗ䛻↷ᑕ䛷䛝䜛ᙉᗘኚㄪᨺᑕ⥺἞⒪䛺䛹䛾 㧗⢭ᗘᨺᑕ⥺἞⒪䛸ẚ䛧䛶ศᏊ䝺䝧䝹䛷䛜䜣⣽⬊䜢㑅ᢥⓗ䛻↷ᑕ䛩䜛䛣䛸䛜䛷䛝䜛䛯䜑䚸ᨺᑕ⥺᭷

ᐖ஦㇟䜢㍍ῶ䛷䛝䚸ᝈ⪅㻽㻻㻸䜢ྥୖ䛥䛫䜛ḟୡ௦䛜䜣἞⒪ἲ䛸䛧䛶኱䛝䛺ᮇᚅ䛜ᐤ䛫䜙䜜䛶䛔䜛䚹䜟 䛜ᅜ䛾ᇶ♏䞉⮫ᗋ◊✲䛾㐍Ṍ䛻䜘䜚䚸ୡ⏺䛻㄂䜛⮫ᗋᐇ⦼䜢ୖ䛢䜛䜘䛖䛻䛺䛳䛯䛜䚸ศᏊ䝺䝧䝹䛷䛜䜣

⣽⬊䜢㑅ᢥⓗ䛻↷ᑕ䛷䛝䜛≉ᚩ䜢᭱኱㝈䛻ᘬ䛝ฟ䛧䛶䛔䜛䛸䛿ゝ䛘䛪䚸᭦䛺䜛ᢏ⾡㠉᪂䛜ᮃ䜎䜜䛶䛔 䜛䚹㻌

≉䛻䚸୰ᛶᏊ䝣䝹䜶䞁䝇䛸䛭䛾ศᕸ ᐃ䚸ཬ䜃䃒⥺䛾⥺㔞ศᕸ ᐃ䛿䚸㻮㻺㻯㼀䛾ᢞ୚⥺㔞䛾Ỵᐃ 䜔᭷ຠᛶ䜢ホ౯䛩䜛䛯䜑䛻୙ྍḞ䛷䚸ᐇ㝿䛻἞⒪䜢⾜䛖ሙྜ䛾ရ㉁ಖド䛻䜒Ḟ䛛䛩䛣䛸䛜䛷䛝䛺䛔䚹 䛧䛛䛧䚸䛣䜜䜙䜢⡆᫆ⓗ䛻 ᐃ䛩䜛ᢏ⾡䛿ᮍ䛰◊✲㏵ୖ䛷䛒䜛䚹୍⯡ⓗ䛻ᨺᑕ⥺᳨ฟჾ䛿୰ᛶᏊ⥺

䛸䃒⥺䛾୧᪉䛻ឤᗘ䜢᭷䛧䚸୰ᛶᏊ䛾䜶䝛䝹䜼䞊䛾㐪䛔䛻䜘䛳䛶䜒᰾཯ᛂ䛜␗䛺䜛䛯䜑䚸䛭䛾ศ㞳  ᐃ䛿ᐜ᫆䛷䛿䛺䛔䚹≉䛻ศᕸ ᐃ䛷䛿䚸ᨺᑕ⥺᳨ฟჾ䛾ᵓ㐀䜔⤌ᡂ䛜」㞧䛺䛯䜑ᨺᑕ໬䜔ᩓ஘䛾 ᙳ㡪䛻䜘䜚᭦䛻ᅔ㞴䜢క䛖䚹䛭䛾䛯䜑䚸ᵓ㐀䛜༢⣧䛷⤌ᡂ䛾ᆒ୍ᛶ䜒㧗䛔ཷືᆺ䛾᳨ฟჾ䛻䜘䜛୰ᛶ Ꮚ䞉䃒⥺䛾ᘚู ᐃ䛸ศᕸ ᐃ䛜᭷ຊ䛺ゎỴἲ䛸䛺䜛䛜䚸⌧Ꮡ䛩䜛䜲䝯䞊䝆䞁䜾䝥䝺䞊䝖䜔䝷䝆䜸䜽䝻䝭 䝑䜽䝣䜱䝹䝮䛷䛿䚸⏝䛔䜛⤌ᡂ䛜㝈ᐃ䛥䜜䚸䛣䜜䜎䛷䛻䜒ᐇ⏝໬䛻⮳䜛᭷⏝䛺ᥦ᱌䛿䛺䛥䜜䛶䛔䛺䛔䚹㻌

䜟䜜䜟䜜䛿䚸䛣䜜䜎䛷䛻୰ᛶᏊ⥺䞉䃒⥺䛾ΰᅾሙ䛻䛚䛔䛶୰ᛶᏊ䛸䃒⥺䛻ឤᗘ䜢᭷䛩䜛㻭㼘㻞㻻㻟㻦㻯㼞㻌 㼇㻝㼉䛸䃒⥺䛻䛾䜏ឤᗘ䜢᭷䛩䜛㻮㼑㻻䛾⇕⺯ග≉ᛶ䜢⏝䛔䛯୰ᛶᏊ䞉䃒⥺ᘚู ᐃ䜢⾜䛳䛶䛝䛯䚹 㻭㼘㻞㻻㻟㻦㻯㼞㻌䛿䚸㼄⥺䜔䃒⥺䛺䛹䛾ගᏊ䛻ᑐ䛧䛶⇕⺯ග䜢♧䛩䛣䛸䛿ሗ࿌䛥䜜䛶䛔䛯䛜䚸୰ᛶᏊ䛾 ᐃ 䛻䛿⏝䛔䜙䜜䛶䛔䛺䛛䛳䛯䚹䛧䛛䛧䚸^㻞㻣㻭㼘䛾㻔㼚㻘㻌 䃒㻕䛷⏕ᡂ䛥䜜䛯^㻞㻤㻭㼘䛜䃑^䌦ቯኚ䜢క䛖䛯䜑䚸䛭䛾䃑^䌦⥺䛾 䜶䝛䝹䜼䞊䛾䜋䜌඲䛶䜢㻭㼘㻞㻻㻟㻦㻯㼞䛜྾཰䛧䛶䛔䜛䛣䛸䛜♧၀䛥䜜䛯䚹䛭䛾䛯䜑䚸䃒⥺䛰䛡䛷䛺䛟୰ᛶ Ꮚ⥺䛻䜒ឤᗘ䜢᭷䛩䜛䛣䛸䛜᫂䜙䛛䛻䛺䛳䛯䚹䛧䛛䛧䚸୰ᛶᏊ⥺䛸䃒⥺䜢ᘚู䛩䜛㝿䛻䛿䚸୰ᛶᏊ䛻ᑐ 䛩䜛ឤᗘ䛜䜘䜚㧗䛔䛣䛸䛜ᮃ䜎䛧䛟䚸㻭㼘㻞㻻㻟㻦㻯㼞䜢ẕᮦᩱ䛸䛧䛯⇕⺯ගయ䛾୰ᛶᏊឤᗘ䜢ྥୖ䛥䛫䜛ㄢ㢟 䛜ṧ䛥䜜䛯䚹᫖ᖺᗘ䛿䚸ῧຍ๣䛸䛧䛶㻮䜢ῧຍ䛧䛶୰ᛶᏊ䛻ᑐ䛩䜛⇕⺯ග䛾㧗ឤᗘ໬䜢ヨ䜏䛯䛜䚸ᮇ ᚅ䛧䛯ຠᯝ䛿ᚓ䜙䜜䛺䛛䛳䛯䚹㻌

䛭䛣䛷䚸ᮏ⏦ㄳ䛷䛿䚸㻭㼘㻞㻻㻟㻦㻯㼞䛸㻯㼐ᯈ≧䝁䞁䝞䞊䝍䞊䜢ే⏝䛧䛶䚸୰ᛶᏊ䛻ᑐ䛩䜛㧗ឤᗘ໬䜢ヨ 䜏䛯䛾䛷ሗ࿌䛩䜛䚹㻌

㻌 㻌

䞉Pu-Be୰ᛶᏊ※ཬ䜃ಖ⟶⏝ῶ㏿ᐜჾ 䞉Al2O3:Cr䝉䝷䝭䝑䜽TL䝇䝷䝤䠄༓ⴥ䝉䝷䠅

䞉▼ⱥ䜺䝷䝇⟶ᑒධBeO:Na TLD䠄UD-170LS䚸ᯇୗ㟁ჾ䠅 䞉䝷䝆䜸䜽䝻䝭䝑䜽䝣䜱䝹䝮䠄䜺䝣䜽䝻䝭䝑䜽䝣䜱䝹䝮EBT3 䠅 䞉䜾䝻䞊᭤⥺ ᐃ⿦⨨

䞉㔠⟩ཬ䜃䜹䝗䝭䜴䝮ᯈ

䞉➃❆ᆺGMィᩘ⟶䠄NDE11001䚸ᐩኈ㟁ᶵ䠅

䞉LaBr3(Ce)䝅䞁䝏䝺䞊䝅䝵䞁᳨ฟჾ䠄LABR-1.5x1.5䚸CANBERRA䠅

䛊ᐇ㦂᪉ἲ䛋

Pu-Be୰ᛶᏊ※䠄1 Ci䠅䜢ᑒධ䛧䛯⥺※ಖ⟶⏝୰ᛶᏊῶ㏿ᐜჾ䛾እቨ䛻Al2O3:Cr䝉䝷䝭䝑䜽TL䝇䝷 䝤䛸䝷䝆䜸䜽䝻䝭䝑䜽䝣䜱䝹䝮䚸BeO TLD䜢タ⨨䛧6䚸24䚸27᫬㛫↷ᑕ䜢⾜䛳䛯䠄ᅗ1䠅䚹䛭䛾ᚋ䚸ྛ䝃䞁䝥 䝹䛾TL䜢 ᐃ䛧䛯䚹

ᅗ1㻌Pu-Be୰ᛶᏊ※↷ᑕయ⣔

䞉⇕୰ᛶᏊ᮰䛾 ᐃ

䝃䞁䝥䝹఩⨨䛻䛚䛡䜛⇕୰ᛶᏊ᮰䛿㔠䛾ᨺᑕ໬ἲ䛻䛶ồ䜑䛯䚹TLD↷ᑕ䛸ྠᵝ䛾య⣔䛷䚸〄ཬ 䜃䜹䝗䝭䜴䝮䝣䜱䝹䝍䛷⿕そ䛧䛯㔠⟩䛻Pu-Be୰ᛶᏊ※䜢↷ᑕ䛧䛶ᨺᑕ໬䛥䛫䛯䚹༑ศ䛻ᨺᑕ໬䛥䛫䛯 ᚋ䚸ᨺฟ䛥䜜䛯䃑⥺䜢GMィᩘ⟶䛻䜘䜚 ᐃ䛧㔠⟩䛾㣬࿴ᨺᑕ⬟䜢⟬ฟ䛧䛯䚹〄䛾㔠⟩䛸䜹䝗䝭䜴䝮䝣 䜱䝹䝍䛷⿕そ䛧䛯㔠⟩䛾㣬࿴ᨺᑕ⬟䛾ᕪ䛛䜙䚸⇕୰ᛶᏊ᮰䜢ồ䜑䛯䚹

㻌

䞉䜾䝻䞊᭤⥺䛾 ᐃ㻌

ᵓ⠏䛧䛯⢭ᐦ䜾䝻䞊᭤⥺䛾 ᐃ䝅䝇䝔䝮䜢ᅗ㻞 䛻♧䛩䚹 ᐃ䝅䝇䝔䝮䛿䚸㻠㻡㻌 㼙㼙㽢㻠㻡㻌 㼙㼙ゅ䛾≉

ὀ䝠䞊䝍䞊䛸䝣䜷䝖䞁䜹䜴䞁䝔䜱䞁䜾䝴䝙䝑䝖䠄㻴㼍㼙㼍㼙㼍㼠㼟㼡㻌 㻼㼔㼛㼠㼛㼚㼕㼏㼟㻌 㻼㼔㼛㼠㼛㼟㼑㼚㼟㼛㼞㻌 㼙㼛㼐㼡㼘㼑㻌 㻴㻝㻜㻣㻞㻞㻙㻝㻝㻜䠅䚸 㞟ග䝺䞁䝈䚸㉥እ⥺䜹䝑䝖䝣䜱䝹䝍䞊䚸 ᗘ䝁䞁䝖䝻䞊䝷䞊䠄㻿㻴㻵㻹㻭㻰㻱㻺㻌㻲㻼㻞㻝㻌㼜㼞㼛㼓㼞㼍㼙㼙㼑㼞䠅䚸ᬯ⟽䚸䝜䞊 䝖 㻼㻯 䛛䜙ᵓᡂ䛥䜜䜛䚹᪼ ㏿ᗘ䛿䚸ᕷ㈍䛥䜜䛶䛔䜛 㼀㻸 䝸䞊䝎䞊䜘䜚䜒㻟 ᱆䜋䛹㐜䛟䛩䜛䛣䛸䛜ྍ⬟䛷 䛒䜚䚸⢭ᐦ䛺 㼀㻸 䜾䝻䞊᭤⥺ゎᯒ䛜ྍ⬟䛷䛒䜛䚹௒ᅇ䛿䚸୰ᛶᏊ⥺䛻ᑐ䛩䜛⇕⺯ග≉ᛶ䜢ẚ㍑䛩䜛䛯 䜑䚸᪼ ㏿ᗘ䜢㻜㻚㻝䉝䞉㼟^㻙㻝䛸⢭ᐦ䛺䜾䝻䞊᭤⥺䛾 ᐃ䜢⾜䛳䛯䚹 ᐃἼ㛗䛿䚸㻟㻜㻜㻌㼚㼙㻌䛛䜙㻣㻜㻜㻌㼚㼙䛸䛧

↷ᑕ䝃䞁䝥䝹 䐟Al2O3:Cr䛾䜏 䐠Al2O3:Cr+Cdᯈ

䐡䝷䝆䜸䜽䝻䝭䝑䜽䝣䜱䝹䝮䛾䜏 䐢䝷䝆䜸䜽䝻䝭䝑䜽䝣䜱䝹䝮+Cdᯈ 䐣BeO㻌 TLD䛾䜏

䐤BeO㻌 TLD+Cdᯈ 䐥㔠⟩䛾䜏

䐦㔠⟩+Cdᯈ

↷ᑕ䝃䞁䝥䝹

䛯䚹㻌 㻌

㻌 㻌 㻌

ᅗ㻞㻚㻌 ⢭ᐦ䜾䝻䞊᭤⥺ ᐃ䝅䝇䝔䝮㻌 㻌

䞉䝷䝆䜸䜽䝻䝭䝑䜽䝣䜱䝹䝮䛾 ᐃ㻌

ᕷ㈍䛾䝇䜻䝱䝘䞊䜢⏝䛔䛶䚸䝣䜱䝹䝮⃰ᗘ䜢 ᐃ䛧䛯䚹㻌 䞉୰ᛶᏊ䞉䃒⥺ΰᅾሙ䛷䛾䃒⥺㔞 ᐃ㻌

㻮㼑㻻㻦㻺㼍㻔㼁㻰㻙㻝㻣㻜㻸㻿䚸㻼㼍㼚㼍㼟㼛㼚㼕㼏㻕䜢⏝䛔䛯䚹㻌 㻌

䛊ᐇ㦂⤖ᯝሗ࿌䛋

⇕୰ᛶᏊ᮰䛾 ᐃ⤖ᯝ䜢⾲䠍䛻♧䛩䚹

⾲1㻌 㔠⟩䛾㣬࿴ᨺᑕ⬟ཬ䜃⇕୰ᛶᏊ᮰

㔠⟩ 㣬࿴ᨺᑕ⬟>V@ ⇕୰ᛶᏊ᮰>FP

V@

〄

࢝ࢻ࣑࣒࢘ࣇ࢕ࣝࢱ

〄㸫࢝ࢻ࣑࣒࢘ࣇ࢕ࣝ

ࢱ

™

䜎䛯䚸㻮㼑㻻㻦㻺㼍㻌 㼀㻸㻰䛻䜘䜛୰ᛶᏊ䞉䃒⥺ΰᅾሙ䛷䛾䃒⥺㔞 ᐃ⤖ᯝ䛿䚸㻜㻚㻡㼙㻳㼥㻛㼔䛷䛒䛳䛯䚹

ᅗ䠏䛻Pu-Be୰ᛶᏊ※䛻䜘䜛↷ᑕ᫬㛫䛸Al2O3:Cr䛾⇕⺯ගᙉᗘ䛾㛵ಀ䜢♧䛩䚹䛔䛪䜜䛾↷ᑕ᫬㛫 䛻䛚䛔䛶䜒Cd䛻䜘䜛ቑឤస⏝䛜☜ㄆ䛷䛝䛯䛜䚸䛭䛾๭ྜ䛿5-10 %䛷䛒䛳䛯䚹௒ᅇ౑⏝䛧䛯Pu-Be୰ᛶ Ꮚ※䛻䜘䜛୰ᛶᏊሙ䛸BNCT䛾୰ᛶᏊሙ䛷䛿䚸୰ᛶᏊ᮰䜒ΰᅾ䛩䜛䃒⥺㔞䜒䛸䜒䛻኱䛝䛟␗䛺䜛䛯䜑䚸 䛒䜙䛯䜑䛶᳨ド䛩䜛ᚲせ䛜䛒䜛䛜䚸Al2O3:Cr䛸Cdᯈ䜢⏝䛔䛯⇕୰ᛶᏊ᮰ ᐃ䛻䛚䛔䛶䛿䚸FPyV

࠶ࡓࡾࡀ᳨ฟ㝈⏺࡛࠶ࡿ࡜ᛮࢃࢀࡿࠋ

ᅗ4䛻Pu-Be୰ᛶᏊ※䛻䜘䜛↷ᑕ᫬㛫䛸䝷䝆䜸䜽䝻䝭䝑䜽䝣䜱䝹䝮䠄EBT3䠅䛾䝣䜱䝹䝮⃰ᗘ䛾㛵ಀ䜢♧

䛩䚹䛔䛪䜜䛾↷ᑕ᫬㛫䛻䛚䛔䛶䜒Cd䛻䜘䜛ቑឤస⏝䛜☜ㄆ䛷䛝䛺䛛䛳䛯䚹Cd䛻䜘䛳䛶୰ᛶᏊ䛛䜙ኚ

᥮䛥䜜䛯䃒⥺䛾ከ䛟䛜䝷䝆䜸䜽䝻䝭䝑䜽䝣䜱䝹䝮䛻྾཰䛥䜜䜛䛣䛸䛺䛟㏱㐣䛧䛯䛯䜑䛸⪃䛘䜙䜜䜛䚹

ᅗ䠏䠊Pu-Be୰ᛶᏊ※䛻䜘䜛↷ᑕ᫬㛫䛸Al2O3:Cr䛾⇕⺯ගᙉᗘ

ᅗ䠐䠊Pu-Be୰ᛶᏊ※䛻䜘䜛↷ᑕ᫬㛫䛸䝷䝆䜸䜽䝻䝭䝑䜽䝣䜱䝹䝮䠄EBT3䠅䛾䝣䜱䝹䝮⃰ᗘ

௒ᅇ⾜䛳䛯䚸Pu-Be୰ᛶᏊ※↷ᑕ䛻䜘䜛Cd୰ᛶᏊ䝁䞁䝞䞊䝍䞊䜢⏝䛔䛯Al2O3:Cr Cd䝉䝷䝭䝑䜽TL 䝇䝷䝤䛸䝷䝆䜸䜽䝻䝭䝑䜽䛻䜘䜛୰ᛶᏊ ᐃ䛷䛿䚸Cd䛻䜘䛳䛶ኚ᥮䛥䜜䛯୰ᛶᏊ⏤᮶䛾䃒⥺䜔䃑⥺䛻㉳

ᅉ䛧䛯⇕⺯ග㔞䛸䚸୰ᛶᏊሙ䛻ΰᅾ䛧䛶䛔䛯䃒⥺䛻㉳ᅉ䛧䛯⇕⺯ග㔞䛸䛾ᕪ䛜ᑠ䛥䛟䚸᫂䜙䛛䛺ඃ఩

ᛶ䛿ㄆ䜑䜙䜜䛺䛛䛳䛯䚹 㻌

㻌

䛊ཧ⪃ᩥ⊩䛋

[1]K. Shinsho, Y. Kawaji, S. Yanagisawa et al.䠖X-ray imaging using the thermoluminescent properties of commercial Al2O3ceramic plates, Applied Radiation and Isotopes, 111䠖117-123, 2016

㻌

䠄ᴗ⦼୍ぴཬ䜃ㄽᩥせ᪨㻌 グ㍕౛䠅㻌 䛺䛧㻌

䠄Ꮫ⏕➼Ặྡ䝸䝇䝖㻌グ㍕౛䠅㻌 㻌

ᐇ㦂䞉 ᐃ⿵ຓ⪅㻌

㻌 㻌 㻌⋤㻌Ⰻ㈼㻌 㻌 㻌 㻌 㻌 ᠱᕝ㻌 ᫂㈉㻌 㻌 㻌 㻌 㻌 ᕝཱྀ㻌 ⥡⨶䚻㻌 㻌 㻌 㻌 㻌ᕤ⸨㻌 ᳃ᾏ㻌 㻌 㻌 㻌ྂሷ㻌 ኟⱆ㻌 㻌 㻌 㻌Ⳣཎ㻌 ⌮㻌 㻌 㻌 㻌 㻌 㻌 ⏣୰㻌 ㄔஓ㻌 㻌 㻌 㻌 㻌 㻌 㻌ᥦ⠂㻌 ⍚஀㤶㻌

䠄ィ㻌 㻤ྡ䠅㻌

㻌㻌

㻌 㻌 㻌 㻌