237U 241PU A DECAY 1976GUZN,1968AH01,1965BA2606NDS 200608 237U H TYP=ERR$AUT=J. Tuli$DAT=11-Jul-2014$COM=corrected NR to agree with PN$ 237U H TYP=FUL$AUT=M. S. Basunia$CIT=NDS 107, 2323 (2006)$CUT=15-Mar-2006$ 237U C Other measurements: 1953As40, 1964Dz03. 237U C 1976GUZN: High isotopic purity 241PU source (preparation not 237U 2C described) was counted using variety of Ge detectors and alpha counter; 237U 3C Measured: EG, RI, ALPHA-G coin, ALPHA branching. 237U C 1968AH01: 99.9% chemically pure 241PU was measured; Detectors: silicon 237U 2C surface barrier detector, ^NAI, and Ge(Li); Measured: EA, IA, EG, RI, 237U 3C GG coin, ALPHA-G G-ALPHA coin, ALPHA branching. 237U C 1965BA26: Enriched 241PU source was prepared from vacuum evaporation of 237U 2C plutonium solution; spectra were taken with magnetic spectrograph; 237U 3C Measured: EA, IA. 237U C %A=2.45E-3 2. 237U CA E From 1968Ah01, except otherwise noted. EA reported both in 237U 2CA 1968Ah01 and 1965Ba26. In 1991Ry01 the original EA energies of 237U 3CA 1965Ba26, 1968Ba25 have been increased by 0.4 KEV, and energies of 237U 4CA 1968Ah01 have been increased by 0.6 KEV because of changes in 237U 5CA calibration energies. 237U CA IA From 1968Ah01, except otherwise noted. ALPHA intensity per 237U 2CA 100 A DECAYS. 237U CA HF R0(237U)=1.5156 9, average of R0(238U)=1.5143 9 and R0(236U) 237U 2CA =1.5168 3 (1998AK04), is used in calculations. See 1969Po05 and 237U 3CA 1976Du03 for theoretical calculations of hindrance factors. 237U TG X rays( uranium): 1976GuZN 237U 2TG 237U 3TG EG IG/100A 237U 4TG --------- ------- 237U 5TG 94.658 5 12.3 XKA2 237U 6TG 98.442 5 19.7 XKA1 237U 7TG 110.421 2.40 XKB3 237U 8TG 111.300 4.44 XKB1 237U 9TG 111.89 0.13 XKB5 237U 2TG 114.34 0.65 XKB2 237U 3TG 114.56 1.48 XKB4 237U 4TG 115.40 0.54 XKO23 237U 5TG 237U CG E From 1976GuZn, except noted otherwise. Measurements of 237U 2CG 1968Ah01, 1976GuZN, 1985He02, and 1985Wi04 are in good agreement. 237U 3CG Other measurements: 1952Fr25, 1965Ba35, 1976Um01, 237U 4CG 1979Ce04, 1993Dr05. 237U CG E(Z) Measurement of 1968Ah01. Assignment to 241PU A DECAY has not 237U 2CG been established. If they belong to 241PU A DECAY, they could be 237U 3CG identical to the 641.34- and 686.29-KEV GAMMA's seen in (n,G), 237U 4CG deexciting the 5/2+,3/2[631] state. Since RI's were not given, 237U 5CG a positive assignment could not be made. Note also that the GAMMA's 237U 6CG deexciting the 3/2+ state of this band have not been reported 237U 7CG in 241PU A DECAY either. 237U CG RI From 1976GuZN, except otherwise noted. Absolute photon 237U 2CG intensity per 100 A DECAYS. RI values are in G/dis (1976GuZn) converted 237U 3CG to absolute photon intensity per 100 A DECAYS by evaluator using 237U 4CG %A=0.00245 1. 237U CG RI(Y) Weighted average of 1985He02 and 1985Wi04. The intensities in 237U 3CG 1985He02 and 1985Wi04 are listed as absolute photon intensities per 237U 4CG 1E+6 241PU decays. These intensities are converted to IG's per 100 A 237U 5CG DECAYS by using %A=0.00245 1. For GAMMA's not listed in 1985He02 and 237U 7CG 1985Wi04, the measured intensities in 1968Ah01 and 1976GuZN are in fair 237U 8CG agreement. 237U CL E From a least-squares fit to the G-ray energies, except 237U 2CL otherwise noted, assuming DE=1 keV for G-rays with no uncertainty. 237U CL J From adopted levels. 237U CL E(D) Deduced from the EA and QA=5140.0 5 values by the evaluator. 237U CL E(A) 1/2[631] band 237U CL E(B) 5/2[622] band 237U CL E(C) 7/2[743] band 241PU P 0.0 5/2+ 14.290 Y 6 5140.0 5 237U N 1.0 1.0 2.45E-5 1 237U CN ALPHA branching is from weighted average of ALPHA/B- 237U 2CN =2.45E-5 8 (1968Ah01), 2.46E-5 1 (1976GuZN), and 2.42E-5 2 (1977VaYR). 237U 3CN Other measurements: 1950Th54, 1960Br15, 1961Sm03, 1963Iv01, 1966Be24. 237U PN 2 237U G 641 2 Z 237U G 687 2 Z 237U L 0.0 1/2+ 6.75 D 1 A 237U CL T From adopted levels. 237U A 5055 5 0.35 3533 237U CA IA$From 1965BA26. IA=1.5 1 together for 5055A and 5042A in 1968Ah01 237U L 11.5 6 3/2+ A 237U A 5042 3 1.02 1022 237U CA IA$From 1965BA26. IA=1.5 1 together for 5055A and 5042A in 1968Ah01 237U G 11.39 237U CG E From 1971GuZY. 237U L 56.3 6 5/2+ A 237U A 4999 4 0.41 5 1.30E3 16 237U G 44.86 0.034 [M1+E2] 0.50 20 166 65 237U CG The intensity balance at the 56.28-KEV level yields 237U 2CG MR=0.50 14. An MR=0.62 was obtained by evaluator from calculation 237U 3CG using the ALAGA rule on 44.86G and 56.32G. ALAGA rule yields 237U 4CG RI(44.86G; E2 part)/RI(56.32G)=0.0916, from which E2/M1(44.86G)=0.27 237U 4CG (MR=0.62) is obtained. 237U 5CG The 45.724G in 237PU which connects the 5/2+ and 3/2+ states of 237U 6CG the 1/2[631] band, the mixing ratio was determined to be MR=0.47 13. 237U S G LC=122 54 $ MC=33 15 237U G 56.32 0.102 [E2] 208.4 237U S G LC=151.2 $ MC=41.7 $ NC+=15.5 237U L 83.0 8 7/2+ A 237U A 4972 3 1.3 1 274 22 237U G 26.7 3.9 14 S 237U CG TI transition not observed. Highly converted M1+E2 transition 237U 2CG with total transition intensity of 3.9% 14 of A DECAY is expected from 237U 3CG intensity balance at the 82.89-KEV level. 237U G 71.6 0.117 4 [E2] 65.9 237U S G LC=47.7 $ MC=13.2 $ NC+=4.91 237U L 160.0 6 5/2+ 3.1 NS 1 B 237U CL T From (A)(148.5G, K X-RAYS)(T) in 1968Ah01. 237U A 4895.9 11 83.2 5 1.311 13 237U CA E$Weighted average of 4896 3 (1968Ah01) and 4895.9 1.2 (1968Ba25). 237U G 77.10 0.84 2 [M1] Y 237U S G LC=7.90 $ MC=1.92 $ NC+=0.698 237U CG RI Weighted average of 0.90 3 (1976GuZN), 0.861 22 (1985He02), 237U 2CG 0.829 18 (1985Wi04). 237U 3CG IG=0.207E-6 4/237U decay which corresponds to 0.845 18 per 100 237U 4CG A DECAYS is recommended in 1986LoZT from IG's of 1985He02 and 1985Wi04. 237U CG CC E2 admixture is calculated to be small, E2/M1=0.00159, using 237U 2CG ALAGA rule on 77.1G and 159.9G and their corresponding RI. E2/M1 value 237U 3CG yields MR=0.04 and CC=10.7. 237U B G BM1W=0.000147 9 237U G 103.680 5 4.13 2 [M1+E2] 0.069 4.49 4 237U CG RI Weighted average of: 4.12 2 (1976GuZN), 4.16 12 (1985He02), 237U 2CG and 4.21 5 (1985Wi04). 1986LoZT recommend IG=1.02E-6 2 237U 3CG per 237U decay which is equal to 4.16 9 per 100 A DECAYS. 237U 3CG Other values: 4.5 5 (1968Ah01), 4.24 20 (1978DiZU). 237U CG M E2/M1=0.00479 is obtained from 237U 2CG RI(103.68G; E2 part)/RI(159.955G)=0.0735, calculated by the 237U 3CG evaluator using the ALAGA rule, RI(103G)=4.15 5, and RI(159G)=0.267 6. 237U CG CC for pure M1, CC=4.45. 237U S G LC=3.37 4 $ MC=0.816 7 $ NC+= 0.300 3 237U B G BM1W=0.000295 16$BE2W=0.0386 21 237U G 148.567 10 7.59 5 [M1+E2] 0.169 +3-2 7.50 14 237U CG RI Weighted average of 7.63 12 (1976GuZN), 237U 2CG 7.60 7 (1985He02), 7.57 7 (1985Wi04). IG=1.859E-6 16 per 237U decay, 237U 3CG corresponding to 7.59 9 per 100 A DECAYS, is recommended in 1986LoZT. 237U 4CG Other values: 7.56 28 (1978DiZU), 9.0 9 (1968Ah01). 237U CG M E2/M1=0.0281 8 (MR=0.170) is obtained from 237U 2CG RI(148G; E2 part)/RI(159G)=0.790, calculated by the evaluator using 237U 3CG the ALAGA rule, RI(148G)=7.59, and RI(159G)=0.270. 237U CG CC for pure M1, CC=7.64. 237U S G KC=5.90 16 $ LC=1.20 2 $ MC=0.292 5 $ NC+=0.107 2 237U B G BM1W=0.000180 11$BE2W=0.069 5 237U G 159.955 0.267 3 [E2] 1.82 Y 237U S G KC=0.212 $ LC=1.16 $ MC=0.322 $ NC+=0.120 237U CG RI IG=0.0658E-6 9 per 237U decay, 237U 3CG corresponding to 0.269 5 per 100 A DECAYS, is recommended in 1986LoZT. 237U B G BE2W=0.060 4 237U L 204.3 9 7/2+ B 237U A 4852.9 11 12.1 2 4.51 9 237U CA E$Weighted average of 4853 3 (1968Ah01) and 4852.9 1.2 (1968Ba25). 237U G 44.20 0.17 (M1+E2) 0.194 13 75.2 28 237U S G LC=56.3 22 $ MC=14.2 6 237U CG M,MR from total conversion coefficient of CC=75.2 28. 237U CG CC obtained from intensity balance at the 204.15-KEV level. 237U 2CG For the 40.748-KEV 7/2+ to 5/2+, 5/2[622] intraband 237U 3CG transition in 237PU, MR=0.194 30 was deduced in 237AM EC decay. 237U G 121.2 0.028 [M1] 13.7 237U S G KC=10.8 $ LC=2.13 $ MC=0.515 $ NC+=0.189 237U L 261.0 10 9/2+ B 237U A 4797 3 1.4 1 15.8 12 237U CA IA 1.18 in 1965Ba26. 237U G 56.76 0.04 [M1+E2] 0.11 +8-11 28 4 237U S G LC=21 5 $ MC=5.0 17 $ NC+=1.87 17 237U CG CC from intensity balance at the 261.0-KEV level. 237U CG MR from the total conversion coefficient of CC=28 4. 237U G 101.0 0.0029 AP[E2] 13.0 S 237U S G LC=9.44 $ MC=2.62 $ NC+=0.986 237U CG E from level scheme. Transition was not observed; it would 237U 3CG be obscured by the K X-RAYS. 237U CG RI Estimated using ALAGA rule on (101G) and 56.76G by the 237U 2CG evaluator, using RI(56.76G)=0.040 4 and MR(56.76G)=0.11 +8-11. 237U L 274.0 12(7/2)- 155 NS 6 C 237U CL T From (4600-4850 A)(114G)(T) in 1968Ah01. 237U A 4783 5 0.2 1 90 45 237U G 114.0 3.3 3 E1 0.090 237U S G LC=0.0676 $ MC=0.0164 $ NC+=0.00582 237U CG E,RI From GG coincidence in 1968Ah01. 237U CG M from intensity balance at the 274.0-KEV level: 237U 2CG CC(E2)=7.42, CC(M1)=3.38. 237U B G BE1W=7.1E-7 4 237U L 318.3 5 (9/2-) C 237U 5 L FLAG=D 237U A 4742 5 0.07 AP 125 AP 237U L 328.5 AP 11/2+ B 237U 5 L FLAG=D 237U A 4732 AP 0.03 AP 247 AP 237U CA E Reported only in 1965Ba26. 237U L 368.8 6 (11/2-) C 237U 5 L FLAG=D 237U A 4692 6 0.03 AP 127 AP