233U 237PU A DECAY (45.43 D) 1979EL05 20NDS 202012
233U H TYP=FUL$AUT=B. Singh, J. K. Tuli, E. Browne$CIT=NDS 170, 499 (2020)$
233U 2 H CUT=8-Oct-2020$
233U c 1979El05: {+237}Pu source was prepared in {+235}U(|a,2n),E=30 MeV at
233U 2c ORNL isochronous cyclotron. Measured E|g, I|g using Ge(Li) detectors.
233U 3c Deduced levels, J|p, I(|a)/I(|e) ratio, Nilsson assignments.
233U c The decay scheme is basically from 1979El05.
233U cA $Two |a groups at 5650 {I20} and 5360 {I20} keV with relative
233U 2cA intensities 21 {I4} and 79 {I8}, respectively were observed by 1957Th10
233U 3cA (ce). The stronger |a group was also seen by 1957Ho68 (ce) at 5340 keV
233U 4cA {I12}. The ratio of total |a intensities to the g.s. and the 5/2[752]
233U 5cA bands deduced here is |?16/|?73, which is roughly consistent with the
233U 6cA measurement by 1957Th10.
233U cA E$Deduced from Q(|a)=5747.6 {I23} (2017Wa10), and level energies.
233U cA IA$Deduced by the evaluators from the |g intensities.
233U 2cA The intensities of the |a transitions to the 5/2[752] and 7/2[743]
233U 3cA bands (levels above 155.1 keV) are given as approximate values since
233U 4cA these intensities are expected to change somewhat by, as yet,
233U 5cA unobserved intraband transitions. Exceptions are noted.
233U cA IA(a)$The |a intensity to each member of the g.s. band is deduced
233U 2cA by evaluators from the hindrance factors for the {+235}U |a
233U 3cA transitions to the {+231}Th g.s. band members 5/2+ to 11/2+, which
233U 4cA are believed to be analogous to those for {+237}Pu decay to {+233}U.
233U 5cA The |a decay intensities in {+235}U decay have been taken from the
233U 6cA {+235}U |a decay dataset in the ENSDF database (May 2013 update).
233U 7cA Value of r{-0}=1.52410 {I58} for {+231}Th was used, based on r{-0}
233U 8cA parameters in 2020Si16. Total relative
233U 9cA |a intensity to the g.s. band members (5/2+, 7/2+, 9/2+, 11/2+) is
233U AcA |?16.6, as compared to 10.1 {I1} for {+235}U |a decay to g.s. members
233U BcA (5/2+, 7/2+, 9/2+, 11/2+) in {+231}Th
233U cA HF$The nuclear radius parameter r{-0}({+233}U)=1.50884 {I18}
233U 2cA is deduced from interpolation (or unweighted average) of radius
233U 3cA parameters of the adjacent even-even nuclides (2020Si16)
233U cG E$Measurements of 1979El05 (semi).
233U cG RI$Measurements of 1979El05. I|g=100 corresponds to 21.8 {I17}
233U 2cG photons per 100 |a decays.
233U cG E(b)$From the Adopted Gammas
233U cG E(d)$This |g is shown in the decay scheme of 1979El05, as
233U 2cG expected, but not observed. Evaluators do not include this |g in the
233U 3cG Adopted dataset, as it is not confirmed in any other study.
233U cG RI(G)$|g ray was obscured by the presence of neighboring
233U 2cG background radiation (1979El05).
233U cL E$From least squares fit to E|g data
233U cL J$From the Adopted Levels.
233U cL BAND(A)$|n5/2[633] band
233U cL BAND(B)$|n5/2[752] band
233U cL BAND(D)$|n7/2[743] band
237PU P 0.0 7/2- 45.43 D 13 5747.6 23
237PU cP J$Assignment in {+237}Pu Adopted Levels in the ENSDF database
237PU2cP (March 2006 update) is still valid. Configuration=|n7/2[743]
237PU cP T$Unweighted average of 45.66 d {I4} (1994Ta25, K x-ray decay curves);
237PU2cP 45.12 d {I3} (1981Ba15, x-ray and low-energy |g decay curves);
237PU3cP 45.3 d {I2} (1977Sm02, K x-ray decay curve); 45.63 d {I20} (1957Ho68,
237PU4cP |g decay curve). Weighted average is 45.32 d {I15}, but reduced
237PU5cP |h{+2} is 39.7 as compared to critical |h{+2}=2.6. Value of
237PU6cP 45.64 d {I4} is given in {+237}Pu Adopted Levels in the ENSDF
237PU7cP database (March 2006 update). Others: 44 d {I2} (1957Th10), 40 d
237PU8cP (1949Ja01)
237PU cP QP$From 2017Wa10
233U N 0.218 17 0.000042 4
233U cN NR$Absolute intensities were obtained by 1979El05 from comparison of
233U 2cN |g intensities measured in |a and |e decays of {+237}Pu.
233U cN BR$%|a=0.0042 {I4} measured by 1979El05. The same value is given in
233U 2cN {+237}Pu Adopted Levels in the ENSDF database (March 2006 update)
233U PN 3
233U L 0.0 5/2+ A
233U A 5650.6 23 6.6 AP 2550 40 a
233U cA HF$deduced by evaluators from I|a=4.77 {I7} (from {+235}U |a decay
233U 2cA in ENSDF, May 2013 update) and r{-0}=1.52410 {I58} for {+231}Th
233U L 40.349 5 7/2+ A
233U A 5610.3 23 6.4 AP 1570 30 a
233U cA HF$deduced by evaluators from I|a=3.82 {I6} (from {+235}U |a decay in
233U 2cA ENSDF) and r{-0}=1.52410 {I58} for {+231}Th
233U G 40.351 10 b S
233U L 92.17 12 9/2+ A
233U A 5558.6 24 2.8 AP 1860 60 a
233U cA HF$deduced by evaluators from I|a=1.28 {I4} (from {+235}U |a decay in
233U 2cA ENSDF) and r{-0}=1.52410 {I58} for {+231}Th
233U G 51.5 5 b S
233U G 92.1 5 b S
233U L 155.31 9 11/2+ A
233U A 5495.5 24 0.75 AP 313E1 40 a
233U cA HF$deduced by evaluators from I|a=0.24 {I3} (from {+235}U |a decay in
233U 2cA ENSDF) and r{-0}=1.52410 {I58} for {+231}Th
233U G 63.4 2 d S
233U G 114.92 10 d S
233U L 298.75 13 (5/2-) B
233U A 5351.8 24 17.4 AP 20 AP
233U G 258.46 20 16.1 12[E1] 0.0547
233U S G KC=0.0433 7$LC=0.00857 12$MC=0.00207 3
233U S G NC=0.000553 8$OC=0.0001318 19$PC=2.41E-5 4$QC=1.496E-6 21
233U G 298.89 20 72.2 18[E1] 0.0396
233U S G KC=0.0315 5$LC=0.00609 9$MC=0.001468 21
233U S G NC=0.000393 6$OC=9.37E-5 14$PC=1.728E-5 25$QC=1.105E-6 16
233U L 320.74 13 7/2- B
233U A 5329.9 24 44.7 AP 5.8 AP
233U G 228.56 20 36.2 15[E1] 0.0723
233U S G KC=0.0571 8$LC=0.01151 17$MC=0.00279 4
233U S G NC=0.000744 11$OC=0.000177 3$PC=3.22E-5 5$QC=1.94E-6 3
233U G 280.40 20 100 2 [E1] 0.0456
233U S G KC=0.0362 5$LC=0.00707 10$MC=0.001705 24
233U S G NC=0.000456 7$OC=0.0001088 16$PC=2.00E-5 3$QC=1.262E-6 18
233U G 320.75 20 59.6 18[E1] 0.0339
233U S G KC=0.0270 4$LC=0.00518 8$MC=0.001247 18
233U S G NC=0.000333 5$OC=7.97E-5 12$PC=1.473E-5 21$QC=9.56E-7 14
233U L 353.81 13 9/2- B
233U A 5296.9 24 12.2 AP 13 AP
233U G 198.61 20 7.3 10[E1] 0.1001
233U S G KC=0.0786 12$LC=0.01625 24$MC=0.00394 6
233U S G NC=0.001051 15$OC=0.000249 4$PC=4.51E-5 7$QC=2.63E-6 4
233U G 261.66 20 18.1 11[E1] 0.0532
233U S G KC=0.0422 6$LC=0.00832 12$MC=0.00201 3
233U S G NC=0.000537 8$OC=0.0001280 18$PC=2.35E-5 4$QC=1.458E-6 21
233U G 313.34 20 27.8 14[E1] 0.0357
233U S G KC=0.0284 4$LC=0.00546 8$MC=0.001316 19
233U S G NC=0.000352 5$OC=8.41E-5 12$PC=1.553E-5 22$QC=1.003E-6 15
233U L 397.57 23 11/2- B
233U A 5253.2 24 0.7 GE 140 LE
233U G 305.4 2 2.9 9 [E1] 0.0377
233U S G KC=0.0301 5$LC=0.00579 9$MC=0.001396 20
233U S G NC=0.000373 6$OC=8.92E-5 13$PC=1.645E-5 24$QC=1.057E-6 15
233U L 503.61 11 7/2- D
233U A 5147.1 24 5.5 AP 3.6 AP
233U G 181.8 10 0.8 AP[M1] 4.06 9 ?
233U F G FLAG=G
233U S G KC=3.22 7$LC=0.628 14$MC=0.152 4
233U S G NC=0.0409 9$OC=0.00995 21$PC=0.00192 4$QC=0.000153 4
233U G 205.05 20 3.2 8 [M1] 2.89
233U S G KC=2.30 4$LC=0.447 7$MC=0.1080 16
233U S G NC=0.0291 5$OC=0.00708 11$PC=0.001365 20$QC=0.0001089 16
233U G 411.1 2 1.7 5 [E1] 0.0200
233U S G KC=0.01610 23$LC=0.00298 5$MC=0.000715 10
233U S G NC=0.000191 3$OC=4.59E-5 7$PC=8.56E-6 12$QC=5.83E-7 9
233U G 463.1 2 3.4 10[E1] 0.01572
233U S G KC=0.01267 18$LC=0.00231 4$MC=0.000553 8
233U S G NC=0.0001480 21$OC=3.56E-5 5$PC=6.66E-6 10$QC=4.63E-7 7
233U G 503.9 2 6.9 13[E1] 0.01328
233U S G KC=0.01073 15$LC=0.00193 3$MC=0.000463 7
233U S G NC=0.0001239 18$OC=2.98E-5 5$PC=5.59E-6 8$QC=3.95E-7 6
233U L 561.4 20 (9/2-) D ?
233U A 5089.1 31 0.5 AP 17 AP
233U G 241 2 0.5 AP[M1] 1.84 5 ?
233U F G FLAG=G
233U S G KC=1.46 4$LC=0.284 8$MC=0.0686 19
233U S G NC=0.0185 5$OC=0.00449 13$PC=0.000866 24$QC=6.91E-5 19
233U G 521.1 20 0.8 AP[E1] 0.0124420 ?
233U S G KC=0.01005 16$LC=0.00180 3$MC=0.000432 7
233U S G NC=0.0001156 19$OC=2.78E-5 5$PC=5.22E-6 9$QC=3.71E-7 6