172YB 172TM B- DECAY (63.6 H) 1974RE07,1967OT03,1968WI2295NDS 199509 172YB H TYP=FUL$AUT=BALRAJ SINGH$CIT=NDS 75,199 (1995)$CUT=31-May-1995$ 172YB C Source obtained from chemical separation of 172TM activity from 172YB2C 172ER B- decay. 172ER produced by double-neutron capture in 172YB3C enriched 170ER 172YB C 1974Re07: measured G 172YB C 1967Ot03: measured T1/2, G, GG 172YB C 1968Wi22: measured G, GG, CE, B, BG, BCE 172YB C 1966Ha15: measured B, BG, BG(THETA) (shape factors) 172YB C Earlier measurements: 172YB C G: 1961Or01, 1961He11, 1961Ha42, 1961Ku10, 1956Ne08 172YB C GG: 1961Or01, 1961He11, 1961Ha42 172YB C B: 1963Ku22, 1961Or01, 1961He11, 1961Ha42, 1960Vo08, 1956Ne08 172YB C BG: 1961Ha42, 1961Or01, 1961He11 172YB C GG(THETA): 1973HoYJ and 1972WuZZ (thesis) 172YB C GG(THETA,H,T): 1970Wa25, 1970He17, 1969Fo07 172YB C T1/2 and isotopic identification: 1963Ku22, 1961Or01, 1961Ha42, 172YB2C 1961Ku10, 1961He11, 1960Vo08, 1956Ne08 172YB C Systematics of BETA decay: 1979Mi17 172YB CL BAND(A)$ GS BAND 172YB CL BAND(B)$ KPI=1- OCTUPOLE BAND 172YB CL BAND(C)$ KPI=0+ BAND. 172YB CL BAND(D)$ KPI=0+ BAND 172YB CL BAND(E)$ KPI=2+ GAMMA-BAND 172YB CL BAND(F)$ KPI=2+ BAND. 172YB CL BAND(G)$ KPI=3+ BAND. 172YB CL BAND(H)$ KPI=3+ BAND. 172YB CL E$From least-squares fit to EG's 172YB CL J$From adopted levels. 172YB CB E$From 1966Ha15. Others: 1963Ku22, 1961Or01, 1961He11, 1961Ha42, 172YBxCB 1960Vo08 172YB CG The following GAMMA rays with EG(RI) reported by 1967Ot03 172YB2CG are omitted since these seem to belong to background radiation: 172YB3CG 133.6 (AP 0.1), 238.5 (AP 0.2), 351.8 (AP 0.2), 1461.0 (3.9), 172YB4CG 1592.7 (1.4) 172YB CG The following GAMMA rays with EG(RI) reported by 1967Ot03 are 172YB2CG omitted since these are not confirmed in later studies 172YB3CG (1968Wi22,1974Re07): 112.8 (AP 0.1), 145.0 (AP 0.2), 203.6 (AP 0.1), 172YB4CG 374.1 (AP 0.1), 542.0 (AP 0.1), 1116.0 (AP 1), 1184.0 (AP 1), 172YB5CG 1491.0 (AP 0.5), 1545.0 (AP 0.5). None of these GAMMA rays is 172YB6CG observed by 1968Wi22. The following upper limits are quoted, 172YB7CG respectively: 0.15, 0.2, 0.3, 0.2, 0.1, 1.0, 1.0, 0.1, 0.1 172YB CL The 1376, 1750, and 1807 levels proposed by 1967Ot03 are 172YB2CL omitted since the GAMMA rays connecting these levels are not reported 172YB3CL in other studies 172YB CG E,RI$From 1974Re07 172YB CG M,MR$From adopted gammas for GAMMA rays below 600 where internal 172YB2CG conversion is significant (>1%). For GAMMA rays above 600, values 172YB3CG are from GG(THETA) data (1973HoYJ,1972WuZZ) 172YB N 0.060 5 1.0 1.0 172YB CN NR$SUMOF (TI of G's to GS)=71 4. IB(GS)=29 4 (1966Ha15) 172YB PN 3 172TM P 0.0 2- 63.6 H 3 1880 6 172YB L 0.0 0+ A 172YB B 1870 10 29 4 9.77 6 1U 172YBS B EAV=691.0 25 172YB CB The 1870B has a first-forbidden unique shape (1966Ha15) 172YB CB IB$from 1966Ha15. Others: 24 8 (1961He11), 1961Or01, 1961Ha42 172YB CB E$others: 1963Ku22, 1961Or01, 1961He11, 1961Ha42, 1960Vo08 172YB L 78.750 7 2+ 1.61 NS 3 A 172YB CL T$GG(T) (1970He17). Other: 1.60 NS 11 (1969Fo07). 172YB CL G FACTOR=0.335 10 (1970He17). Method: GG(THETA,H) 172YB B 1790 10 36 4 8.60 5 C 172YBS B EAV=668 3 172YB CB Shape of 1790B is similar to that for a 172YB2CB first-forbidden unique transition (1966Ha15). From (1790B)(79G)(THETA) 172YB3CB (1966Ha15), 2- to 2+ B-transition is deduced as pure L=2 (DK=2) 172YB4CB transition. LOGF1UT for 1790B would be 9.57 5 172YB CB IB$36 4 (1966Ha15). Others: 1961He11, 1961Ha42 172YB G 78.750 7 109 8 E2 8.4 C 172YBS G KC= 1.573 $LC= 5.17 $MC= 1.271 $NC+= 0.350 $ 172YB L 260.269 11 4+ A 172YB B 1610 10 1.2 2 10.79 8 C1U 172YBS B EAV=583.9 25 172YB CB The 1610B has a first-forbidden unique shape (1966Ha15) 172YB CB IB$0.91 9 (1966Ha15). Others: 1961He11, 1961Ha42 172YB G 181.520 9 45.9 24 E2 0.376 C 172YBS G KC= 0.2192 $LC= 0.1202 $MC= 0.0290 $NC+=0.00790 $ 172YB L 539.67 7 6+ A 172YB G 279.40 7 0.08 2 E2 0.093 172YBS G KC=0.0646 $LC=0.02142 $MC=0.00508 $NC+=0.00146 $ 172YB L 1042.84 4 0+ C 172YB B 0.29 3 9.86 5 1U 172YBS B EAV=281.0 22 172YB G 964.11 6 5.7 3 C 172YB CG (964G)(79G)(THETA): A2=0.12 12, A4=1.22 24 172YBxCG (1972WuZZ,1973HoYJ) 172YB L 1117.80 3 2+ C 172YB B 0.291 24 9.32 4 172YBS B EAV=244.4 23 172YB G 857.54 4 2.29 13 C 172YB G 1039.06 7 2.30 12 C 172YB CG CEK(1039G)/CEK(1094)=10 6 (1968Wi22) 172YB G 1117.93 15 0.86 12 C 172YB L 1154.91 3 1- B 172YB B 0.96 8 8.73 4 172YBS B EAV=230.6 23 172YB G 1076.15 3 13.2 7 D C 172YB CG CEK(1076G)/CEK(1094) LE 7 (1968Wi22) 172YB CG M$(1076G)(79G)(THETA): A2=-0.22 7, A4=-0.09 12 172YB2CG (1972WuZZ,1973HoYJ) give MR(Q/D)=-0.02 6. Mult=E1 from adopted gammas 172YB G 1154.91 8 2.73 16 172YB L 1172.322 15 3+ 7.95 NS 9 G 172YB CL MOME2(1172 level)/MOME2(79 level)=1.55 23 (1969Fo07), 1.33 14 172YB2CL (1970Wa25). Method: GG(THETA,T) 172YB CL T$GG(T) (1970He17) 172YB B 6.6 6 7.85 5 172YBS B EAV=224.2 22 172YB G 912.064 22 23.6 7 D+Q -2.7 7 C 172YB CG CEK(912G)/CEK(1094)=34 9 (1968Wi22) 172YB CG MR$from (912G)(79G)(THETA): A2=0.27 5, A4=-0.07 6 (1972WuZZ,1973HoYJ). 172YB2CG MR=-0.60 +9-15 is also possible from GG(THETA). MR=-2.36 15 from 172YB3CG adopted gammas 172YB G 1093.59 3 100 5 D+Q -2.7 6 C 172YB CG MR$from (1094G)(79G)(THETA): A2=-0.44 4, A4=-0.022 23 (1972WuZZ, 172YB2CG 1973HoYJ). MR=-0.58 +7-12 is also possible from GG(THETA). 172YB3CG A2=-0.28 (1970He17). Mult=M1+E2, MR=-4.0 3 from adopted gammas 172YB L 1198.51 9 2- B 172YB B 0.244 22 9.23 5 172YBS B EAV=214.6 22 172YB G 1119.72 9 4.08 24 C 172YB L 1262.94 3 4+ G 172YB B 0.027 14 10.22 23 1U 172YBS B EAV=202.8 21 172YB G 90.605 25 0.40 3 E2+M1 -1.64 2 4.7 C 172YB G 723.0 0.03 S 172YB CG E,RI$from adopted gammas 172YB G 1002.67 10 0.37 5 ? 172YB L 1286.4 3 4+ C 172YB B 0.008 4 10.66 22 1U 172YBS B EAV=194.7 21 172YB G 747.0 0.04 S 172YB CG E,RI$rounded off values from adopted gammas 172YB G 1026.15 25 0.09 4 172YB L 1465.849 8 2+ E 172YB B 10.1 8 6.88 4 172YBS B EAV=121.3 20 172YB G 267.14 20 0.036 12 [E1] 0.027 172YB G 293.61 6 0.19 2 [M1,E2] 0.09 3 172YB G 348.04 6 0.28 2 [M1,E2] 0.08 3 172YB G 423.04 6 0.26 2 [E2] 0.028 C 172YB G 1205.60 8 2.59 11 C 172YB G 1387.093 4 93 5 D+Q -5.0 5 C 172YB CG MR$(1387G)(79G)(THETA): A2=0.076 14, A4=0.36 10 (1972WuZZ). 172YB2CG MR=-5.1 +11-16 from adopted gammas 172YB G 1465.86 4 75 4 C 172YB L 1476.62 3 2+ D 172YB B 1.11 9 7.80 5 172YBS B EAV=117.8 20 172YB G 321.70 11 0.06 1 E1 0.017 172YBS G KC=0.01414 $LC=0.00208 172YB G 358.86 6 0.16 2 (E2) 0.044 172YBS G KC=0.0327 $LC=0.00868 172YB G 1216.35 11 0.58 8 C 172YBS G KC=0.0021 172YB G 1397.87 6 13.1 6 D+Q C 172YB CG MR$+0.69 +15-11 or +5 +4-2 from (1398G)(79G)(THETA): 172YB2CG A2=-0.20 5, A4=0.20 9 (1972WuZZ). Mult=M1+E2(+E0), MR(E2/M1)=0.8 5 172YB3CG from adopted gammas 172YB G 1476.64 10 4.9 2 172YB L 1549.06 5 3+ E 172YB B 2.40 19 7.19 5 172YBS B EAV=94.4 20 172YB G 286.30 20 0.105 20 (M1) 0.183 172YBS G KC=0.1534 $LC=0.02300 172YB G 431.29 8 0.10 1 (M1) 0.062 ? 172YBS G KC=0.0517 $LC=0.00768 172YB G 1288.76 6 8.4 4 D,Q C 172YB CG MR$-0.40 +18-28 or -5 +3-34 from (1289G)(79G)(THETA): 172YB2CG A2=0.17 13, A4=0.01 18 (1972WuZZ). Mult=M1+E2, MR=2.8 +7-10 from 172YB3CG adopted gammas 172YB G 1470.28 10 31.1 14 D+Q C 172YB CG MR$-7.2 +17-28 or -0.32 4 from (1470G)(79G)(THETA): 172YB2CG A2=-0.31 3, A4=-0.07 4 (1972WuZZ). Mult=M1+E2, MR=-7.6 +19-36 from 172YB3CG adopted gammas 172YB L 1608.417 15 2+ F 172YB B 10.0 8 6.29 5 172YBS B EAV=75.9 19 172YB G 131.83 4 0.17 2 [M1,E2] 1.4 2 172YB G 142.56 2 1.69 8 [M1,E2] 1.1 2 C 172YB G 436.102 16 4.12 15 [M1,E2] 0.04 2 C 172YB G 565.56 5 0.69 4 [E2] 0.013 C 172YBS G KC=0.01056 $LC=0.00207 172YB G 1348.13 7 2.91 15 C 172YB G 1529.64 4 85 5 Q+D +10 3 C 172YB CG MR$(1530G)(79G)(THETA): A2=-0.146 14, A4=0.36 3 (1972WuZZ). 172YB2CG Mult=E2+M1(+E0) from adopted gammas 172YB G 1608.37 6 69 4 172YB L 1662.740 20 3+ H 172YB B 1.30 10 6.87 5 172YBS B EAV=59.5 18 172YB G 186.11 20 0.036 12 [M1,E2] 0.5 1 172YB G 197.02 6 0.10 1 [M1,E2] 0.4 1 172YB G 399.74 4 1.98 12 M1(+E2) -0.07 7 0.075 C 172YB G 490.422 16 6.9 4 M1(+E2) +0.04 4 0.044 C 172YB G 544.82 20 0.093 20 [M1,E2] 0.025 10 172YB G 1402.46 9 2.35 15 C 172YB G 1583.91 6 9.6 5 D,Q C 172YB CG MR$GT 10 or -0.20 6 from (1584G)(79G)(THETA): 172YB2CG A2=-0.23 4, A4=-0.10 7 (1972WuZZ). Mult=E2(+M1), MR=+55 +94-22 from 172YB3CG adopted gammas 172YB L 1700.57 4 3+ F 172YB B 0.220 18 7.38 6 172YBS B EAV=48.4 18 172YB G 528.26 4 2.10 12 M1(+E2) +0.01 3 0.037 C 172YBS G KC=0.0306 $LC=0.00451 172YB G 1440.26 13 0.27 3 C 172YB G 1621.73 11 1.20 8 C