CTBT 高崎放射性核種観測所の粒子状 ... - cpdnp.jp

1 1 CTBT CTBT 2012 6 13 2011 3 CTBT URL CTBT 1 134Cs -134 137Cs -137 134Cs 137Cs 2011 8 2012 4 134Cs 137Cs 134Cs 137Cs MDC CTBT CTBT IMS OSI IMS 170 60 11 80 89 337 80%

2 80 2 40 65 29 2011 12 3 6 1000 IMS 1 46 42 131mXe, 133mXe, 133Xe, 135Xe 3 1 CTBT (46 ) (42 )

3 91Sr -91 91Y -91 93Y -93 95Zr -95 95Nb -95 97Zr -97 99Mo -99 99mTc -99m 103Ru -103 105Rh -105 106Ru -106 111Ag -111 112Pd -112 115mCd -115m 115Cd -115 125Sn -125 125Sb -125 126Sb -126 127Sb -127 128Sb -128 129mTe -129m 130I -130 131mTe -131m 30 131I -131 132Te -132 133I -133 135I -135 131mXe -131m 133m Xe -133m 133Xe -133 135Xe -135 136Cs -136 137Cs -137 140Ba -140 140La -140 141Ce -141 143Ce -143 144Ce -144 147Nd -147 149Pm -149 151Pm -151 153Sm -153 155Eu -155 156Sm -156 156Eu -156 157Eu -157 24Na -24 42K -42 46Sc -46 47Sc -47 51Cr -51 54Mn -54 57Co -57 58Co -58 59Fe -57 60Co -60 65Zn -65 69mZn -69m 72Ga -72 74As -74

4 76As -76 84Rb -84 86Rb -86 88Y -88 89Zr -89 102Rh -102 207 106mAg -106m 108mAg -108m 418 110mAg -110m 120Sb -120 122Sb -122 124Sb -124 132Cs -132 133Ba -133 134Cs -134 152mEu -152m 152Eu -152 168Tm -168 187W -187 190Ir -190 192Ir -192 196Au -196 196mAu -196m 198Au -198 203Pb -203 224Ra -224 237U -237 239Np -239 4 RASA 1 2 24 20000 25000 m3 24 24 CTBT CTBTO IDC 24 24 24 72 IDC 24 hr Ge

5 24 hr 24 hr 5 2 RASA 3. 3 (a) (b) (a) 1000 (a) 7Be -7 40K -40 214Pb -214 , 214Bi -214 , 226Ra -226 , 234mPa -234m 208Tl -208 , 212Pb -212 , 212Bi -212 , 228Ac -228 235U -235 2 2012 5 5 6 3(b) 131,132,133I, 134,136,137Cs, 129,129m,132Te,140Ba-140La, 99Mo-99mTc, 95Nb 2011 9 134Cs -134 137Cs -137 6 3 (a) 2011 3 6 7 (b) 1000 (b) 2012 5 5 6 134Cs 137Cs (keV) + + + + + + + + + +0905001000150020002500 , 208Tl (Th) 212Pb (Th) 208Tl (Th) 208Tl (Th) 212Bi (Th) 40K2013 208Tl (Th) 214Bi (U) 214Bi (U) 212Bi (Th)186 235U (Ac)+226Ra (U)208Tl (Th)212Pb (Th)214Pb (U)214Bi (U)

6 208Tl (Th)212Bi (Th)228Ac (Th)228Ac (Th)234mPa (U)212Bi (Th)208Tl (Th)214Bi (U)212Bi (Th)208Tl (Th)214Bi (U)214Bi (U)214Bi (U) , 134Cs(a)(b)(a) 1000 7 2 keV % 7Be 1) ( ) 40K 2) 109 (11) 228Ac 3) ( ), ( ), ( ) 212Pb ( ), ( ) 212Bi ( ), ( ), ( ) 208Tl (99), ( ), ( ) 234mPa 4) ( ), ( ) 226Ra 1600 ( ) 214Pb ( ), ( ), ( ) 214Bi ( ), ( ), ( ) 235U 5) 108 ( ), ( ) 1) 2) 3) 232Th -232 208Pb -208 11 4) 238U -238 206Pb -206 18 5) 235U -235 207Pb 207 16 MDC CTBT MDA MDC RRR Ld (1) NB Ld MDA (2)

7 Tl i Kc i MDC (3) V0 Pa m3 i % Ks KW MDC 3 MDC 2011 3 7 MDC MDC 8 3 Bq/m3 * * 95Zr -95 97Zr -97 16 1 95Nb -95 99Mo -99 32 2 103Ru -103 132Te -132 131I -131 133I -133 13 1 134Cs -134 136Cs -136 137Cs -137 140Ba -140 11 143Ce -143 17 2 * 2011 3 7

8 MDC IDC RRR 4 RRR 134Cs -134 137Cs -137 131I -131 , 132Te -132 , 140Ba -140 ND 7Be -7 , 40K -40 228Ac -228 212Pb -212 234mPa -234m 214Pb -214 212Pb -212 214Pb -214 220Rn 222Rn 235U -235 226Ra -226 186 keV keV(235U) keV(226Ra) 186 keV (%)

9 9 4 2012 4 I-131Te-132Ba-140 MDCMDC MDC Bq/m3 Bq/m3 Bq/m3u (%) Bq/m3u (%) Bq/m3 Bq/m3u (%) Bq/m3u (%) Bq/m3u (%) Bq/m3u (%) Bq/m3u (%) Bq/m3u (%)3 31 4 1 1 4 2 2 4 3 3 4 4 4 4 5 5 4 6 6 4 7 7 4 8 8 4 9 9 4 10 10 4 11 11 4 12 12 4 13 13 4 14 14 4 15 27 4 28 29 4 30 30 5 1 1) ND 2) 3) 4 15 26 Pa-234mBi-214 MDC MDC CTBT Cs-134Cs-137Be-7K-40Ac-228Pb-21210 5 I-131Te-132Ba-140 MDCMDC MDC Bq/m3 Bq/m3 Bq/m3u (%) Bq/m3u (%) Bq/m3 Bq/m3u (%) Bq/m3u (%) Bq/m3u (%) Bq/m3u (%) Bq/m3u (%) Bq/m3u (%)5 1 5 2 NDND373642ND7087111082516192421951111895 2 5 3 NDND303512ND2118111362575719819541115105 3 5 4 NDND433712ND709210702456114391862122275 4 5 5 NDND403642ND154211041247674291981102075 5 5 6 NDND8721442ND343511103248633551190112189 5 8 5 9 NDND13021892ND87731192727669268117241028 95 9 5 10 NDND652882ND6028112052556101911109511229 5 10 5 11 NDND12221802ND15311119725569946110911021 95 11 5 12 NDND17122511ND16891138725661230111224102 585 12 5 13 NDND