91SR 91RB B- DECAY 1976GL02,1997GR09 13NDS 201310
91SR H TYP=FUL$AUT=Coral M. Baglin$CIT=NDS 114, 1293 (2013)$CUT=1-Sep-2013$
91SR c Others: 1970Ma53, 1973Cl02, 1974Ac01, 1978Wo15, 1979Bo26, 1980De02,
91SR2c 1983Ia02, 1992Pr03, 1996Gr20, 2006HaZZ, 2011Ta26 (TAGS spectrum;
91SR3c no details given).
91SR c 1997Gr09: total absorption |g spectrometer (TAGS) (NaI(Tl) well
91SR2c detector with Si electron detector in well) operated in singles
91SR3c or in 4|p|g-|b coin mode, summed-E|g resolution|?5%; deduced |b
91SR4c feeding to (g.s. + 94 level) (from 4|p|g-|b coin data), |b feeding
91SR5c to excited states (from summed-E|g spectrum); see also 1996Gr20.
91SR c 1976Gl02: on-line separation of fission products. Ge(Li) detectors,
91SR2c FWHM=2.5 keV at 1332 keV. Ge(Li) low-energy photon
91SR3c spectrometer, FWHM=0.5 keV at 122 keV.
91SR4c Measured E|g, I|g, |g|g, |g(t).
91SR c The decay scheme is that of 1976Gl02 with the omission of
91SR2c a 5289 level deexcited by 3224.4|g and 3346.2|g. TAGS data
91SR3c indicate that the intensities of the latter gammas are far
91SR4c too great for those placements to be correct. Note that the
91SR5c latter data also indicate |?10.8% |b- feeding to as yet
91SR6c unknown levels (primarily in the energy ranges of 2.9-4.1
91SR7c MeV and 4.6-5.5 MeV); since the total unplaced I|g is |?2.6%,
91SR8c this suggests that some of the gammas in the adopted scheme
91SR9c are incorrectly placed.
91SR cB |b-decay strength function measured by 1975Al11.
91SR cB Average E|b: 1560 {I30} (1990Ru05), 1360 {I70} (1982Al01).
91SR cB E Based on Q(|b{+-})=5907 {I9} (2012Wa38). Q(|b{+-}) values
91SR2cB deduced from measured |b{+-} endpoint energies are as follows: 5860
91SR3cB {I10} (1992Pr03), 5850 {I20} (1983Ia02), 5857 {I8} (1980De02), 5760
91SR4cB {I40} (1978Wo15; revision of 5680 {I40} from |b|g coin (6 gates) in
91SR5cB 1973Cl02). Other Q(|b{+-}): 5880 {I50} (2001Ko07); 2006HaZZ (value
91SRxcB unstated).
91SR cB IB From intensity balance at each level, except as noted;
91SR2cB for uncertainly placed lines, the full measured I|g is assumed.
91SR2cB %I|b values deduced from TAGS data are given in comments for
91SR3cB comparison; for most established levels these |b feedings agree well,
91SR4cB the notable exceptions being for the 439 and 1482 levels, and probably
91SR5cB the 93 level. Note that TAGS data also indicate a total %I|b=10.8 to
91SR6cB currently unknown levels.
91SR cB IB(F) From TAGS (1997Gr09); may represent feeding to one level or
91SR2cB to several levels of undetermined energy, lying within a typically
91SR3cB |?100 keV wide energy bin centered on the level energy indicated.
91SR cB IB(H) 1976Gl02 deduce I|b=5 {I5} based on relative I|g for {+91}Kr
91SR2cB and {+91}Rb decay chain activities in decay equilibrium with {+91}Sr
91SR3cB growing in, assuming %I|b({+91}Y g.s.)=30.8; the evaluator revises
91SR4cB this to I|b=2 {I5} based on adopted %I|b({+91}Y g.s.)=28.6. Other
91SR4cB %I|b(g.s.): <6 from direct measurement (dependent on assumed |b
91SR5cB counter threshold energy) (1976Wo05); 1997Gr09 estimate that, of their
91SR6cB measured I|b(g.s.+94)=17.4 39, I|b|?6.2 feeds the g.s. I|b(g.s.)=60
91SR7cB {I10} (1974Ac01) appears to be erroneous.
91SR DG CC$ FROM BrIcc v2.2b (20-Jan-2009) 2008Ki07, "Frozen Orbitals" appr.
91SR cG Average E|g: 2335 {I33} (1990Ru05).
91SR cG |a(K)exp data are from 1974Ac01, if not stated otherwise. Ice
91SR2cG spectrum lines are normalized to well-known K conversion lines
91SR3cG (556|g({+91}Y), 304|g({+85}Kr), and 151|g({+85}Rb)).
91SR cG E From 1976Gl02, except as noted.
91SR cG M,MR From |a(K)exp.
91SR cG E(A) From curved-crystal spectrometer measurement (1979Bo26).
91SR cG E(B) Transition identified only in coincidence.
91SR cG E(C) Transition tentatively placed by the evaluator.
91SR cG RI(D) From |g|g coin (1976Gl02).
91SR cG E(G) Placed by 1976Gl02 from a tentative 5289.2 level; however,
91SR2cG TAGS data from 1997Gr09 show that I|g is far too large for that
91SR3cG placement to be correct.
91SR cL E From least-squares fit to E|g, omitting the 1024|g
91SR2cL and including tentatively-placed gammas only when there is
91SR3cL no definitely-placed |g deexciting the same level.
91SR cL J,T(A) From Adopted Levels.
91SR cL T(B) Weighted average of 94 ns {I5} (1993Wo07), 87.5 ns {I30}
91SR2cL (1976Gl02), 88 ns {I3} (1970Ma07), 91 ns {I3} (1970Ma53). Other
91SR3cL T{-1/2}: 90 ns {I10} (1974Ac01).
91SR cL E(E) Not a discrete level. E is the centroid of an energy bin
91SR2cL of typically |?100 keV width which encompasses a level or levels
91SR3cL fed in |b{+-} decay with the summed I|b indicated under "|b-
91SR4cL radiations"; from total absorption |g spectroscopy (1997Gr09).
91SR5cL Neither specific level energies nor deexcitation |g energies
91SR6cL are known at present. Not included in Adopted Levels.
91RB P 0.0 3/2(-) 58.2 S 3 5907 9
91SR N 0.0338 18 1.0 1.0
91SR cN NR From |S(I(|g+ce) to g.s.)=98 {I5}, which assumes that
91SR2cN %I|b({+91}Sr g.s.)=2 {I5} (see comment on I|b to g.s.). Some of the
91SR3cN additional levels implied by TAGS data might
91SR4cN also have g.s. |g's, but those |g's are probably
91SR5cN too weak to greatly affect the adopted normalization;
91SR6cN all but 2.6% of total I|g is placed, and the strongest
91SR7cN unplaced |g has I|g=0.33%.
91SR PN 3
91SR G 702.66 25 3.1 5
91SR G 816.5 5 3.0 7
91SR G 1238.7 6 2.0 6
91SR G 1250.7 8 1.4 6
91SR G 2196.0 4 5.5 12
91SR G 2208.5 7 3.1 11
91SR G 2606.7 5 4.1 11
91SR G 2724.2 7 5.1 15
91SR G 2912.0 4 9.8 7
91SR G 3107.9 9 4.6 16
91SR G 3224.4 3 9.7 11 G
91SR G 3346.2 6 5.3 24 G
91SR G 3376.5 3 8 4
91SR G 3906.2 9 2.8 9
91SR G 4061.3 5 3.4 12
91SR G 4224.8 6 3.0 6
91SR G 4544.1 5 1.6 4
91SR L 0 5/2+ 9.65 H 6 A
91SR B 2 5 7.9 11 H
91SRS B EAV=2664.0 44
91SR L 93.628 4(3/2)+ 89.4 NS 16 B
91SR B 24 5 6.81 9
91SRS B EAV=2618.8 44
91SR cB IB %I|b(g.s.+94 level)=17.4 {I39} (from 4|p|g-|b coin data,
91SR2cB 1996Gr20 and 1997Gr09); if I|b(g.s.)=2 {I5}, this leaves %I|b(94)=15
91SR3cB {I+2-6}. This is significantly lower than, but not inconsistent with
91SR4cB the intensity balance at the 94 level deduced from the
91SR5cB decay scheme.
91SR G 93.628 4 1000 51E2(+M1) 3.3 GT 1.25 5 AC
91SR3 G EKC=1.08 7$ EKC/ELC=5.95 24 (1975Wo05)$
91SRS G KC=1.04 4$LC=0.175 8$MC=0.0294 13$NC+=0.00351 15
91SRS G NC=0.00338 14$OC=0.000132 5
91SR cG |a(K)exp: weighted average of 1.10 {I9} (1975Wo05) and 1.05
91SR2cG {I10} (1974Ac01). The datum from 1975Wo05 is the unweighted average
91SR3cG of 1.19 {I6} from I(ce(K))/I|g and 1.01 {I7} from I(K| x ray)/I|g.
91SR cG K/(L+M+)=5.38 {I21} (1970Ma07).
91SR cG MR from |a(K)exp; |d>1.1 from K/L. |d=0.8 {I+5-2} from K/(L+M+)
91SR2cG is inconsistent with |a(K)exp.
91SR L 439.159 19 (+)
91SR B 2.3 6 7.71 12
91SRS B EAV=2452.1 44
91SR cB IB inconsistent with %I|b=0.60 from TAGS data.
91SR G 345.52 3 246 12(M1,E2) 0.009 3 AC
91SR3 G EKC=0.009 4 (1974Ac01)$
91SRS G KC=0.0080 25$LC=0.0009 3$MC=0.00016 6$NC+=2.0E-5 7
91SRS G NC=1.9E-5 7$OC=1.2E-6 4
91SR cG Other E|g: 345.43 {I3} (1976Gl02).
91SR G 439.15 3 62 3 C
91SR L 1042.034 25 (+)
91SR B 1.8 3 7.59 8
91SRS B EAV=2161.6 44
91SR cB IB high cf. %I|b=1.33 from TAGS data.
91SR G 602.85 3 84 4 (M1,E2) C
91SR3 G EKC=0.0018 11 (1974Ac01)$
91SRS G CC=0.00191 22$KC=0.00169 19$LC=0.000187 24$MC=3.1E-5 4$NC+=4.2E-6 5
91SRS G NC=3.9E-6 5$OC=2.51E-7 24
91SR G 948.49 5 34.7 19(M1,E2) C
91SR3 G EKC=0.0006 3 (1974Ac01)$
91SRS G CC=0.000641 17$KC=0.000568 15$LC=6.16E-5 20$MC=1.03E-5 4$NC+=1.38E-6 4
91SRS G NC=1.30E-6 4$OC=8.46E-8 18
91SR G 1041.99 5 65 3 (M1,E2) C
91SR3 G EKC=0.00052 22 (1974Ac01)$
91SRS G CC=0.000520 10$KC=0.000461 9$LC=4.98E-5 12$MC=8.36E-6 19$NC+=1.120E-6 2
91SRS G NC=1.051E-6 22$OC=6.87E-8 11
91SR L 1230.84 5 (+)
91SR B 1.7 3 7.53 8
91SRS B EAV=2070.7 44
91SR cB IB high cf. %I|b=1.14 from TAGS data.
91SR G 1137.24 5 115 6 (M1,E2) C
91SR3 G EKC=0.00036 15 (1974Ac01)$
91SRS G CC=0.000432 7$KC=0.000381 6$LC=4.11E-5 7$MC=6.90E-6 12$NC+=2.7E-6 3
91SRS G NC=8.68E-7 14$OC=5.68E-8 8$IPC=1.8E-6 3
91SR G 1230.64 15 8.7 8 C
91SR L 1367.76 7
91SR DL IB=-0.08 12 FROM INTENSITY BALANCE.
91SR G 1274.05 18 7.4 9
91SR G 1367.76 8 22.5 15 C
91SR L 1482.12 10
91SR B 1.1014 7.62 6
91SRS B EAV=1949.8 44
91SR cB IB inconsistent with %I|b=0.15 from TAGS data.
91SR G 1388.13 24 6.5 9 C
91SR G 1482.17 11 43 3 C
91SR L 1740.27 8
91SR B 0.7314 7.68 9
91SRS B EAV=1825.8 44
91SR cB IB 0.70 from TAGS data.
91SR G 509.6 5 5.1 8 BC
91SR G 1646.51 23 7.7 10 C
91SR G 1740.25 10 42 3 C
91SR L 1917.09 12
91SR B 1.0811 7.43 5
91SRS B EAV=1740.9 44
91SR cB IB 0.92 from TAGS data.
91SR G 875.0 3 3.2 5 C
91SR G 1823.3 4 10.6 18
91SR G 1917.11 15 22.6 17
91SR L 1942.91 8 (1/2+,3/2,5/2)
91SR B 3.5 3 6.90 4
91SRS B EAV=1728.5 44
91SR cB IB 2.80 from TAGS data.
91SR G 1849.27 9 98 5 C
91SR G 1942.81 17 11.8 12
91SR L 2064.66 61/2(+),3/2,5/2
91SR B 5.4 5 6.65 4
91SRS B EAV=1670.2 44
91SR cB IB inconsistent with %I|b=4.32 from TAGS data.
91SR G 1023.20 12 13.1 11 C
91SRF G FL=1042.034
91SR G 1625.4 3 21.2 14 DC
91SR G 1970.99 10 199 10 C
91SR G 2064.69 14 23.3 18
91SR L 2159.08 22
91SR B 0.19 6 8.06 14
91SRS B EAV=1625.0 43
91SR cB IB 0.18 from TAGS data.
91SR G 1719.9 3 9.1 14
91SR L 2236.95 12
91SR B 0.36 9 7.74 11
91SRS B EAV=1587.7 43
91SR cB IB 0.34 from TAGS data.
91SR G 1006.3 4 2.8 7 C
91SR G 2143.22 14 19.8 15 C
91SR G 2236.9 5 4.1 10
91SR L 2350 AP E
91SR B 0.67 F
91SR DB EAV=1534 4, LOGFT=7.4.
91SR L 2657.89 61/2(-) TO 5/2(-)
91SR B 16.411 5.86 3
91SRS B EAV=1386.8 43
91SR cB IB 16.46 from TAGS data.
91SR G 593.23 3 38.2 20 C
91SR G 917.59 22 5.5 9 C
91SR G 1615.86 9 73 4 C
91SR G 2218.2 3 8.3 13 C
91SR G 2564.19 14 372 19
91SR L 2900 AP E
91SR B 0.67 F
91SR DB EAV=1272 4, LOGFT=7.1.
91SR L 3000 AP E
91SR B 0.67 F
91SR DB EAV=1224 4, LOGFT=7.0.
91SR L 3100 AP E
91SR B 0.57 F
91SR DB EAV=1177 4, LOGFT=7.0.
91SR L 3200 AP E
91SR B 0.57 F
91SR DB EAV=1130 4, LOGFT=7.0.
91SR L 3300 AP E
91SR B 0.76 F
91SR DB EAV=1083 4, LOGFT=6.8.
91SR L 3364.68 111/2,3/2,5/2
91SR B 2.8921 6.15 4
91SRS B EAV=1052.4 43
91SR cB IB 3.17 from TAGS data.
91SR G 1205.6 3 3.4 7 C
91SR G 1299.9 3 4.8 7 C
91SR G 1624.8 5 14.7 10 DC
91SR G 2322.34 21 13.3 15 C
91SR G 2925.72 18 45 3 C
91SR G 3270.9 3 13.2 18
91SR L 3395.5 4(1/2+,3/2,5/2) ?
91SR B 0.46 9 6.93 9 ?
91SRS B EAV=1037.9 43
91SR cB IB 0.51 from TAGS data.
91SR G 3302.2 10 4.1 16 ?
91SR G 3395.4 4 9.6 17 ?
91SR L 3400 AP E
91SR B 1.33 F
91SR DB EAV=1036 4, LOGFT=6.5.
91SR L 3446.58 181/2(+),3/2,5/2
91SR B 1.9819 6.26 5
91SRS B EAV=1014.0 43
91SR cB IB 2.12 from TAGS data.
91SR G 1503.0 7 2.7 10
91SR G 3007.6 5 8.1 15 C
91SR G 3353.1 6 6.0 21 C
91SR G 3446.50 20 44 3
91SR L 3550 AP E
91SR B 0.96 F
91SR DB EAV=966 4, LOGFT=6.5.
91SR L 3643.81 21(1/2+,3/2,5/2) ?
91SR B 0.8410 6.48 6 ?
91SRS B EAV=921.8 42
91SR cB IB 0.92 from TAGS data.
91SR G 2161.8 6 3.5 11 ?
91SR G 3643.75 23 23.3 23 ?
91SR L 3693.23 121/2(-) TO 5/2(-)
91SR B 11.6 9 5.30 4
91SRS B EAV=898.9 42
91SR cB IB 12.50 from TAGS data.
91SR G 1034.9 6 3.9 16 C
91SR G 1628.49 14 26.8 17 C
91SR G 1953.0 5 2.1 9
91SR G 3599.67 19 309 16 C
91SR L 3736.80 141/2(+),3/2,5/2
91SR B 2.1320 6.00 5
91SRS B EAV=878.6 42
91SR cB IB 2.31 from TAGS data.
91SR G 2254.6 4 3.7 9
91SR G 2505.95 14 42.2 25 C
91SR G 3736.5 4 17 4
91SR L 3776.62 171/2,3/2,5/2
91SR B 1.0312 6.28 6
91SRS B EAV=860.2 42
91SR cB IB 1.12 from TAGS data.
91SR G 1712.0 4 6.1 12 C
91SR G 1859.56 25 4.5 9
91SR G 2036.1 3 10.9 15 C
91SR G 3337.8 5 6.5 17
91SR G 3682.9 7 2.4 13
91SR L 3800 AP E
91SR B 0.30 F
91SR DB EAV=849 4, LOGFT=6.8.
91SR L 3831.08 14(1/2,3/2,5/2) ?
91SR B 0.68 8 6.42 6 ?
91SRS B EAV=835.0 42
91SR cB IB 0.74 from TAGS data.
91SR G 1174.1 5 2.9 8 ?
91SR G 1594.15 17 12.2 11 C ?
91SR G 1766.17 18 4.9 12 ?
91SR L 3839.4 3(1/2+,3/2,5/2) ?
91SR B 0.82 9 6.33 5 ?
91SRS B EAV=831.1 42
91SR cB IB 0.91 from TAGS data.
91SR G 3745.9 5 6.0 14 ?
91SR G 3839.3 3 18.2 19 ?
91SR L 3900 AP E
91SR B 1.32 F
91SR DB EAV=803 4, LOGFT=6.1.
91SR L 3938.42 20(1/2+,3/2,5/2) ?
91SR B 1.3113 6.04 5 ?
91SRS B EAV=785.5 42
91SR cB IB 1.44 from TAGS data.
91SR G 1874.4 4 3.3 16 ?
91SR G 3844.33 25 30.2 25 ?
91SR G 3938.7 5 5.4 11 ?
91SR L 4000 AP E
91SR B 1.37 F
91SR DB EAV=757 4, LOGFT=6.0.
91SR L 4043.33 163/2(-),5/2(-)
91SR B 1.6521 5.84 6
91SRS B EAV=737.3 42
91SR cB IB 1.80 from TAGS data.
91SR G 3604.3 6 11 5 C
91SR G 3949.56 23 19.1 16
91SR G 4043.26 22 22.0 16
91SR L 4078.30 103/2(-),5/2(-)
91SR B 6.8 5 5.19 4
91SRS B EAV=721.3 42
91SR cB IB 7.48 from TAGS data.
91SR G 1841.1 3 3.8 13
91SR G 2013.5 3 7.9 12 C
91SR G 2847.39 22 19.3 20 C
91SR G 3639.14 22 36 3 C
91SR G 3984.7 3 12.3 13
91SR G 4078.25 19 121 6
91SR L 4100 AP E
91SR B 0.50 F
91SR DB EAV=711 4, LOGFT=6.3.
91SR L 4157.55 193/2(-),5/2(-)
91SR B 1.2411 5.85 4
91SRS B EAV=685.2 41
91SR cB IB 1.36 from TAGS data.
91SR G 2789.6 4 14.6 15 C
91SR G 4063.9 7 1.3 9
91SR G 4157.48 22 20.8 15
91SR L 4189.39 163/2(-),5/2(-)
91SR B 1.2611 5.81 4
91SRS B EAV=670.8 41
91SR cB IB 1.23 from TAGS data.
91SR G 2958.6 6 3.8 11
91SR G 3147.30 24 19.4 19 C
91SR G 4095.7 3 7.1 9
91SR G 4189.2 3 6.9 8
91SR L 4240.1 4(1/2,3/2,5/2) ?
91SR B 0.34 7 6.33 9 ?
91SRS B EAV=647.8 41
91SR cB IB 0.33 from TAGS data.
91SR G 2872.5 6 5.6 17 ?
91SR G 3800.7 5 4.5 10 ?
91SR L 4249.1 3(1/2+,3/2,5/2) ?
91SR B 0.34 4 6.32 6 ?
91SRS B EAV=643.8 41
91SR cB IB 0.33 from TAGS data.
91SR G 4249.0 3 10.1 10 ?
91SR L 4253.8 3(1/2+,3/2,5/2) ?
91SR B 0.38 5 6.27 6 ?
91SRS B EAV=641.6 41
91SR cB IB 0.36 from TAGS data.
91SR G 4253.7 3 11.2 11 ?
91SR L 4265.50 163/2(-),5/2(-)
91SR B 2.2617 5.48 4
91SRS B EAV=636.4 41
91SR cB IB 2.14 from TAGS data.
91SR G 2783.3 4 9.9 15 C
91SR G 2897.6 5 6.1 12
91SR G 4171.7 3 8.3 9
91SR G 4265.45 21 42.5 25
91SR L 4327.73 191/2(-) TO 5/2(-)
91SR B 0.82 9 5.85 5
91SRS B EAV=608.3 41
91SR cB IB 0.79 from TAGS data.
91SR G 2263.1 3 4.5 9
91SR G 3284.7 8 4.8 14
91SR G 3888.4 4 8.4 11 C
91SR G 4234.1 3 6.5 7
91SR L 4358.37 16(3/2-,5/2-)
91SR B 0.63 8 5.93 6
91SRS B EAV=594.6 41
91SR cB IB 0.57 from TAGS data.
91SR G 912.8 4 2.1 7 C ?
91SR G 993.69 13 8.9 8
91SR G 2990.6 5 6.0 15
91SR G 4357.9 7 1.6 5
91SR L 4391.0 4(1/2+,3/2,5/2) ?
91SR B 0.32 6 6.19 9 ?
91SRS B EAV=580.0 41
91SR cB IB 0.28 from TAGS data.
91SR G 2448.5 7 4.4 14 ?
91SR G 4297.1 4 3.4 5 ?
91SR G 4391.3 9 1.6 5 ?
91SR L 4453.0 3(1/2+,3/2,5/2) ?
91SR B 0.35 7 6.08 9 ?
91SRS B EAV=552.4 40
91SR cB IB 0.31 from TAGS data.
91SR G 1794.5 6 3.7 11 ?
91SR G 3410.7 8 2.4 16 ?
91SR G 4453.1 4 4.3 5 ?
91SR L 4600 AP E
91SR B 0.43 F
91SR DB EAV=487 4, LOGFT=5.8.
91SR L 4700 AP E
91SR B 0.24 F
91SR DB EAV=444 4, LOGFT=5.9.
91SR L 4793.1 3(3/2-,5/2-) ?
91SR B 0.20 4 5.88 9
91SRS B EAV=403.9 39
91SR cB IB 0.22 from TAGS data.
91SR G 749.73 25 3.3 6 ?
91SR G 1149.7 7 2.0 8 ?
91SR G 4699.3 7 0.5 3 ?
91SR L 4800 AP E
91SR B 0.114 F
91SR DB EAV=401 4, LOGFT=6.1.
91SR L 4900 AP E
91SR B 0.096 F
91SR DB EAV=359 4, LOGFT=6.0.
91SR L 5000 AP E
91SR B 0.067 F
91SR DB EAV=317 4, LOGFT=6.0.
91SR L 5100 AP E
91SR B 0.048 F
91SR DB EAV=276 4, LOGFT=6.0.
91SR L 5200 AP E
91SR B 0.029 F
91SR DB EAV=236 4, LOGFT=6.0.
91SR L 5300 AP E
91SR B 0.024 F
91SR DB EAV=197 3, LOGFT=5.8.
91SR L 5400 AP E
91SR B 0.014 F
91SR DB EAV=160 3, LOGFT=5.8.
91SR L 5500 AP E
91SR B 0.010 F
91SR DB EAV=124 3, LOGFT=5.6.