247CF 251FM A DECAY 1973AH02 15NDS 201503
247CF H TYP=FUL$AUT=C. D. NESARAJA$CIT=NDS 125, 395 (2015)$CUT=31-Mar-2014$
247CF c 1973Ah02: {+251}Fm was produced by bombarding 32-MeV |a on {+249}Cf
247CF2c The |a-particle decay was measured with the Argonne magnetic alpha
247CF3c spectrometer (FWHM=5 keV) and 14 position-sensitive Au-Si surface
247CF4c barrier detectors. |g-rays associated with the |a decay was identified
247CF5c by |a-|g coincidence measurements for which the |g's were detected
247CF6c with a Ge(Li)diode.
247CF cA $|a branching was deduced by 1978Ah02 as 1.80% {I13} from
247CF2cA measured Einsteinium K x-ray/|a ratio of 40 {I2} and estimated
247CF3cA Einsteinium K x-ray intensity of 0.733 {I39} per |e decay.
247CF cA E$From 1973Ah02. The original energies have been
247CF2cA increased by 1 keV, as recommended by 1991Ry01, due to change
247CF3cA in calibration energy.
247CF cA IA$Intensity per 100 |a decays measured by 1973Ah02.
247CF CA HF$r{-0}({+247}Cf)=1.4725 55, unweighted average of
247CF2CA r{-0}({+248}Cf)=1.4670 8 and
247CF3CA r{-0}({+246}Cf)=1.478 14 (1998Ak04), is used in the calculations of HF
247CF TG x-rays (Cf): 1973Ah02
247CF2TG
247CF3TG E(x-ray) I(x-ray) Transitions
247CF4TG -------- -------- -----------
247CF5TG 109.8 2 1.20 13 K|a{-2} x-ray
247CF6TG 115.0 2 1.8 2 K|a{-1} x-ray
247CF7TG 129.5 3 0.65 9 K|b{-1}' x-ray
247CF8TG 133.6 4 0.24 5 K|b{-2}' x-ray
247CF9TG
247CF cG $See 1972Di02 for very accurate K x-ray energies and
247CF2CG relative transition probabilities.
247CF cG $K fluorescence yield for californium was deduced by 1979Ah01
247CF2cG to be {Iw{-k}}=0.973 {I4} from K x-ray and K Auger-electron intensities
247CF cG $|a|g: See 1973Ah02 for coincidence data.
247CF cG E$From 1973Ah02.
247CF cG RI$Photon intensity per 100 |a decays of {+251}Fm, measured
247CF2cG by 1973Ah02, unless otherwise indicated.
247CF cG M$From |g and ce work of 1973Ah02. I(ce)'s are given per
247CF2cG 100 |a decays. Multipolarities in square brackets are from
247CF3cG the level scheme; they were not determined experimentally.
247CF cG RI(F)$From 1978Ah02.
247CF CL BAND(A) 7/2[624] BAND MEMBER
247CF CL BAND(B) 5/2[622] BAND MEMBER
247CF CL BAND(D) 9/2[734] BAND MEMBER
247CF CL BAND(E) 7/2[743] BAND MEMBER
247CF DG CC$FROM BrIcc v2.3a (30-Jun-2013) 2008Ki07, "Frozen Orbitals" appr.
251FM P 0.0 (9/2-) 5.30 H 8 7425.1 20
251FM cP J,T$From Adopted Levels in {+251}Fm (2013Br09)
251FM cP QP$From 2012Wa38
247CF N 1.0 1.0 0.0180 13
247CF PN 3
247CF L 0.0 (7/2+) 3.11 H 3 A
247CF CL T$From |a decay measurement of {+247}Cf (1984Ah02)
247CF A 7306 3 1.5 1 8.69E3 88
247CF L 55.00 11(9/2+) A
247CF A 7252 3 0.93 8 8.5E3 10
247CF G 55.0 2 0.58 8 M1+E2 0.47 4 108 9 63.2 13
247CFS G LC=79 7$MC=21.3 18
247CFS G NC=6.0 5$OC=1.50 13$PC=0.255 19$QC=0.00645 18
247CF cG $Ice(L1+L2):Ice(L3):Ice(M):Ice(N+O)=
247CF2cG 33 {I3}:14.5 {I15}:12.2 {I13}:5.2 {I6}
247CF cG MR$From |a(M)(exp) and |a(theory)(BrICC: 2008Ki07)
247CF L 122.09 11(11/2+) A
247CF A 7185 3 0.29 3 1.49E4 20
247CF G 67.1 2 0.28 5 M1+E2 0.50 1 50.8 1214.5 7
247CFS G LC=37.2 9$MC=9.98 25
247CFS G NC=2.79 7$OC=0.704 17$PC=0.121 3$QC=0.00349 7
247CF cG $Ice(L1+L2):Ice(L3):Ice(M):Ice(N+O)=7.8 {I8}:|?2:2.9 {I4}:1.1 {I2}
247CF cG MR$From |a(M)(exp) and |a(theory)(BrICC: 2008Ki07)
247CF G 122.1 2 0.28 5 E2 8.88 2.8 3
247CFS G LC=6.39 11$MC=1.82 3
247CFS G NC=0.513 9$OC=0.1270 21$PC=0.0204 4$QC=9.00E-5 14
247CF cG $Ice(L1+L2):Ice(L3):Ice(M):Ice(N+O)=1.10 {I16}:0.70 {I12}:0.70
247CF2cG {I13}:0.4 {I1}
247CF L 201.0 4(13/2+) A
247CF A 7107 5 0.05 AP 41638 AP
247CF L 383.2 3 (5/2+) B
247CF A 6929 2 1.8 1 204 20 C
247CF G 383.2 3 1.09 13M1 0.870 2.0 2 FC
247CFS G KC=0.680 10$LC=0.1421 21$MC=0.0349 5
247CFS G NC=0.00965 14$OC=0.00250 4$PC=0.000484 7$QC=2.83E-5 4
247CF cG $Ice(K):Ice(L)=0.85 {I14}:|?0.2
247CF L 427.2 4(7/2+) B
247CF A 6886 2 1.7 1 141 14 C
247CF G 44.0 4 1.26 14 1.26 14
247CF cG $Ice(M)=0.7 {I2}
247CF cG $I(|g+ce)=1.26 {I14} deduced from intensity balance
247CF G 372.2 4 0.25 5 [M1] 0.942 0.44 10 C
247CFS G KC=0.736 11$LC=0.1540 22$MC=0.0378 6
247CFS G NC=0.01046 15$OC=0.00271 4$PC=0.000524 8$QC=3.07E-5 5
247CF L 480.40 9 (9/2-) D
247CF A 6834 2 87.0 9 1.63 13 C
247CF G 358.3 1 17.5 17E1 0.0316 18.1 17FC
247CFS G KC=0.0248 4$LC=0.00510 8$MC=0.001246 18
247CFS G NC=0.000343 5$OC=8.76E-5 13$PC=1.606E-5 23$QC=7.65E-7 11
247CF cG $Ice(K)=0.44 {I6}
247CF G 425.4 1 53 5 E1 0.0224 54 5 FC
247CFS G KC=0.01769 25$LC=0.00354 5$MC=0.000862 12
247CFS G NC=0.000237 4$OC=6.07E-5 9$PC=1.122E-5 16$QC=5.54E-7 8
247CF cG $Ice(K):Ice(L)=0.87 {I14}:|?0.2
247CF G 480.4 1 21.8 19E1 0.01768 22.2 19FC
247CFS G KC=0.01402 20$LC=0.00275 4$MC=0.000669 10
247CFS G NC=0.000184 3$OC=4.72E-5 7$PC=8.77E-6 13$QC=4.43E-7 7
247CF cG $Ice(K):Ice(L)=1.0 {I1}:0.25 {I8}
247CF L 531.99 21 (11/2-) D
247CF A 6783 2 4.8 2 17.6 16 C
247CF G 51.4 4 3.74 23 3.74 23
247CF cG $Ice(M)=0.8 {I2}
247CF cG $I(|g+ce)=3.74 {I23} deduced from intensity balance
247CF G 331.0 3 0.35 7 [E1] 0.0372 0.36 7 C
247CFS G KC=0.0291 5$LC=0.00607 9$MC=0.001485 21
247CFS G NC=0.000409 6$OC=0.0001042 15$PC=1.90E-5 3$QC=8.91E-7 13
247CF G 410.0 3 0.50 7 [E1] 0.0241 0.51 7 C
247CFS G KC=0.0190 3$LC=0.00382 6$MC=0.000932 14
247CFS G NC=0.000256 4$OC=6.56E-5 10$PC=1.210E-5 17$QC=5.93E-7 9
247CF G 477.0 3 0.54 8 [E1] 0.0179 0.55 8 C
247CFS G KC=0.01421 20$LC=0.00279 4$MC=0.000679 10
247CFS G NC=0.000187 3$OC=4.79E-5 7$PC=8.90E-6 13$QC=4.49E-7 7
247CF L 551.0 10(11/2+) B
247CF A 6763 3 0.38 6 184 33 C
247CF G 496 1 0.08 AP[M1] 0.430 0.11 AP C
247CFS G KC=0.336 5$LC=0.0699 11$MC=0.0171 3
247CFS G NC=0.00474 8$OC=0.001231 19$PC=0.000238 4$QC=1.389E-5 21
247CF L 595 4 (13/2-) D
247CF A 6721 3 0.44 4 102 13
247CF L 634 5 (13/2+) B
247CF A 6682 4 0.07 3 4.3E2 19
247CF L 678.0 6 (7/2-) E
247CF A 6639 3 0.56 6 34 5 C
247CF G 623.0 8 0.07 2 [E1] 0.01087 0.07 2 C
247CFS G KC=0.00868 13$LC=0.001646 24$MC=0.000399 6
247CFS G NC=0.0001097 16$OC=2.82E-5 4$PC=5.29E-6 8$QC=2.79E-7 4
247CF G 678.0 8 0.26 6 [E1] 0.00933 0.26 6 C
247CFS G KC=0.00747 11$LC=0.001401 20$MC=0.000339 5
247CFS G NC=9.33E-5 14$OC=2.40E-5 4$PC=4.51E-6 7$QC=2.42E-7 4
247CF L 738.0 8 (9/2-) E
247CF A 6580 3 0.26 4 39 7 C
247CF G 616 1 0.05 AP[E1] 0.01110 0.05 AP
247CFS G KC=0.00886 13$LC=0.001682 25$MC=0.000407 6
247CFS G NC=0.0001121 16$OC=2.88E-5 5$PC=5.41E-6 8$QC=2.85E-7 4
247CF G 683 1 0.04 AP[E1] 0.00921 0.04 AP C
247CFS G KC=0.00737 11$LC=0.001382 20$MC=0.000334 5
247CFS G NC=9.20E-5 14$OC=2.37E-5 4$PC=4.45E-6 7$QC=2.39E-7 4