238PU 238NP B- DECAY 15NDS 201507
238PU H TYP=ERR$AUT=J. K. TULI$COM=Changed parent T1/2 to adopted value$
238PU2 H DAT=19-Feb-2021$
238PU H TYP=FUL$AUT=E. BROWNE, J. K. TULI$CIT=NDS 127, 191 (2015)$
238PU2 H CUT=1-Jun-2014$
238PU D Updated by E. Browne (1/27/2015).
238NP P 0.0 2+ 2.099 D 2 1292.0 7
238NP cP T$From adopted levels; weighted average of 2.1023 d 7, 2.1024 d 9,
238NP2cP 2.1026 d 9 (2006Re09), and 2.0980 d 3 (1990Ch35). Other values:
238NP3cP 2.117 d 2 (1966Qa01), 2.10 d {I1} (1950Fr53).
238PU N 0.2515 13 0.2515 131.0 1.0
238PU cN NR,NT$From weighted average of the following absolute
238PU2cN |g-ray intensities:
238PU3cN 24.99% {I34} (2012Le03), 25.6% {I4} (2010Le01),
238PU4cN 25.17% {I13} (2006Re09), 25.19% {I21} (1990Ch35), and 23.8% {I6}
238PU5cN (1967Sc34) for the 984.5-keV gamma ray.
238PU cG |g|g: 1971Wi03
238PU tG $x-rays: measurements of 1981Le15 for K|a| x ray and of 1972Wi22 for K|
238PU+tG | x ray
238PU2tG E|g I|g
238PU3tG ---- ----
238PU5tG 99.6 0.769 {I8} K|a{-2}| x ray
238PU6tG average RI from 2006Re09 and 1981Le15.
238PU7tG 103.7 1.16 {I8} K|a{-1}| x ray
238PU8tG average RI from 2006Re09 and 1981Le15.
238PU7tG 117.3 0.295 K|b{-1}'| x ray
238PU9tG from 2006Re09.
238PUAtG 120.5 0.119 K|b{-2}'| x ray
238PUBtG From RI(120.5) + RI(121.7)= 0.119 (2006Re09).
238PUCtG
238PU cL J From adopted levels
238PU cL J(A) K=0 g.s. band
238PU cL J(B) K=0 octupole-vibrational band
238PU cL J(C) K=1 band
238PU cL J(E) K=0 |b-vibrational band
238PU cL J(F) K=2 band
238PU cL J(G) K=4 |n 7/2[743]+|n 1/2[631] proposed by 1972Wi22
238PU cL J(K) K=3 |n 7/2[743]-|n 1/2[631] proposed by 1972Wi22
238PU cB |b measurements: |b feeding to each level has been deduced
238PU2cB from |g-transition intensities. The measured |b energies and
238PU3cB intensities are compared below with the values deduced from level
238PU4cB scheme.
238PU tB
238PU5tB 1950Fr53 1955Ra28 1956Ba95 1962Bo03 from level scheme
238PU6tB ------ ------ ------ ------ -----------------
238PU8tB E|b I|b I|b E|b I|b E|b I|b E|b I|
238PU+tB b
238PU9tB
238PU"tB |? 200? 8% 222 {I2} 11.3% {I
238PU+tB 6}
238PU2tB 250 {I10} 31%
238PU3tB 258 {I53}% 55% |? 260 {I58}% 4 263 {I2} 45
238PU+tB .% {I4}
238PU4tB 280 {I10} 20%
238PU5tB 329 {I2} 1.3% {I
238PU+tB 1}
238PU6tB 1133 2.8%
238PU7tB 1272 {I47}% 45% 1236 {I5} 38% |? 1240 {I42}% 4 {I1248} 2
238PU+tB 40.5% {I10}
238PU8tB
238PU cG E$From 2006Re09, unless otherwise noted. Others: 1981Le15, 1972Wi22.
238PU2cG include their E|g values from |a decay in these weighted averages
238PU3cG See also 1970Be57 (semi), 1970Pa22 (semi),
238PU4cG 1962Bo03 (s ce), 1960Al29 (s ce), 1956Ba95 (s ce), 1967Sc34 and
238PU5cG 1969GuZW (semi) see also |g and ce's observed in {+238}Am |e decay,
238PU6cG {+242}Am |a decay. Other measurements: 1950Fr53 (s ce), 1955Ra27 (s
238PU7cG ce), 1959Ga13 (s ce).
238PU cG RI$Weighted average from 2006Re09, 2010Le01, 1990Ch35, 1981Le15, and
238PU2cG 1971We22, unless otherwise noted.
238PU3cG The I|g are normalized to I|g(984|g)=100
238PU4cG others: 2009So02, 1970Pa22, 1970Be57, 1969GuZW, 1967Sc34.
238PU dG Data of these authors are comparable in quoted accuracy.
238PU2dG 1971Wi22 also give a complete set of values but the uncertainties
238PU3dG are larger.
238PU cG RI(C)$I|g=0.269 {I6} for the doubly placed 617 transition. 1981Le15
238PU2cG divide the intensity based on band structure considerations
238PU3cG whereby one expects I|g/I|g(459.8|g) from the 763 {I5}- level to be
238PU4cG |?3. The evaluators assign an uncertainty of 50% to this estimate in
238PU5cG order to deduce I|g for placement from the 661 {I3}- level
238PU cG TI(A)$Data of 1981Le15 yield I(|g+ce)(941|g)/I|g(897|g)=1.4 {I2},
238PU2cG compared with values of 0.59 {I8} in |e decay (1972Ah04) and 0.62 in
238PUxcG |a decay (1960As10)
238PU cG M From ce data of 1956Ba95, 1960Al29, 1962Bo03, 1981Le15.
238PU2cG See also |e decay.
238PU cG MR$Values of 1990Si11 are from low temperature nuclear orientation
238PU2cG of {+238}Np(Gd)
238PU cG M(D)$From ce data in {+242}Cm |a decay
238PU cG $1981Le15 normalized experimental |a to |a(K)(1028.54|g)=0.0088 (E2
238PUxcG theory)
238PU G 220.87 11 0.0122 14 (M2) 11.45
238PU cG |a(K)exp=6.7 {I15}, |a(L)exp=4.0 {I10} (1981Le15)
238PU cG E,RI$from 1972Wi22. 1981Le15 report I|g<0.14. Other: 2006Re09.
238PU G 885.00 15 0.16 2
238PU cG E,RI$from 2006Re09.
238PU L 0.0 0+ 87.74 Y 4 A
238PU L 44.051 16 2+ A
238PU B 1248 2 41.1 6 8.4 1
238PUS B EAV=412.4 3
238PU cB IB$see comment on I(|g+ce)(44.08|g)
238PU G 44.06 2 0.395 6 E2 775 320.6 10
238PU cG M$from |a(M)exp=175 {I20} (1981Le15)
238PU cG TI$from |SI(|g+ce)[(|g+ce) to g.s. excluding the 44.08|g]=76.4 {I7},
238PU2cG the normalization factor 0.2519 {I21}, and the requirement of 100%
238PU3cG feeding of the g.s. by |g+ce, one gets I(|g+ce)(44|g)=320.6 {I10} and
238PU2cG I|b(to 44 level)=41.0% {I5}. From |a, one then gets I|g=0.413 {I5},
238PU3cG including a 1% uncertainty assigned to the theoretical |a value.
238PU3cG 1990Ch35 report I|g=0.35 {I4}, and 1981Le15, based on ce data, report
238PUxcG 0.32 {I4}
238PU cG RI From I(ce) and theoretical |a value.
238PU cG CC$value given is the E2 theory value lowered by 3% (see 1987Ra01)
238PU L 145.934 21 4+ A
238PU G 101.88 3 0.97 4 E2 14.8
238PU cG M$|a(L)exp=11.2 {I6}; (L1+L2):L3=1.61 {I5} (1981Le15)
238PU L 303.36 6 6+
238PU G 157.42 5 0.004 AP [E2] 2.243
238PU cG E,RI$from {+242}Cm |a decay (1981Le15)
238PU L 605.16 4 1- B
238PU B 0.102 3 10.1 1
238PUS B EAV=208.56 25
238PU G 561.17 5 0.419 5 E1 0.0116
238PU2 G FLAG=D$
238PU cG MR$1990Si11 report |d=0.3 +|@-4. |d <0.05 from |a(K)exp in |e decay
238PU G 605.18 5 0.308 6 E1 0.0101
238PU2 G FLAG=D$
238PU L 661.43 4 3- B
238PU B 0.0384 21 10.4 1
238PUS B EAV=189.34 24
238PU G 515.53 7 0.147 3 E1+M2 0.114 17 0.023 3
238PU2 G FLAG=D$
238PU cG MR$from |a(K)exp in |e decay. 1990Si11 report |d=-0.2 {I+2-5}
238PU G 617.41 5 0.269 6 E1+M2 0.077 17 0.0122 13 @
238PU2 G FLAG=CD$
238PU cG MR$from |a(K)exp in |e decay. 1990Si11 report |d=-0.2 {I+1-2}
238PU L 763.21 15 5- B
238PU G 459.80 20 0.012 1
238PU cG E$from {+242}Cm |a decay (1981Le15)
238PU G 617.41 0.03 AP @
238PU2 G FLAG=C$
238PU L 941.54 13 0+ E
238PU G 336.38 15 0.0009 5
238PU cG E$from {+242}Cm |a decay (1981Le15)
238PU cG RI from the intensity of the 897|g and the branching ratio
238PU2cG I(336|g)/I(897|g)=0.031 {I15} in {+242}Cm |a decay. (1981Le15)
238PU G 897.55 30 0.032 3 (E2) 0.0154
238PU cG M$from |e decay
238PU G 941.5 3 E0 0.042 3
238PU cG M no photons were observed, Ice(K)=0.0338 {I25} (1981Le15).
238PU L 962.765 18 1- C
238PU B 1.254 13 7.9 1
238PUS B EAV=91.97 22
238PU G 301.37 7 0.043 3 E2 0.213
238PU cG M$from |e decay
238PU G 357.68 9 0.200 4 M1+E2 2.43 20 0.224 15
238PU cG M$from |a(K)exp=0.13 {I2} (1981Le15) and data in |e decay
238PU G 918.70 4 2.10 2 E1 0.00471
238PU cG M$from |a(K)exp=0.0036 {I8} (1981Le15)
238PU cG MR$1990Si11 report |d=-0.02 {I+11-3}. |d <0.05 from |a(K)exp in |e
238PUxcG decay
238PU G 962.76 2 2.56 2 E1 0.0043
238PU cG M from |a(K)exp=0.0021 {I10} (1981Le15)
238PU L 968.2 3(2-) 8.5 NS LT
238PU cL T$from delayed ce|g coincidence
238PU G 924 0.26
238PU cG E|g and I|g measured by 1970Be57 in delayed ce|g coincidence
238PU G 968.2 4 0.032 14 [M2] 0.122
238PU L 983.02 6 2+ E
238PU B 0.26 3 8.6 1
238PUS B EAV=85.83 22
238PU G 321.8 1 0.0048 20
238PU cG RI$From 1981Le15. Other value: I|g=0.0048 {I8} (2006Re09).
238PU G 378.1 1 0.012 2
238PU cG RI$From 1981Le15. Other value: I|g=0.008 {I8} (2006Re09)
238PU G 836.88 7 0.095 5 [E2] 0.0176
238PU G 938.85 30 0.117 7 E0+E2 4.4 4
238PU cG M$from |a(K)exp=3.5 {I4}, K/L=5.2 {I2} (1981Le15); K:L12:M12=72:21:7.5
238PUxcG (1960Al29)
238PU cG RI$Other from I|g/I|g(837|g)=0.94 {I22} in |a decay
238PU G 983.0 3 0.27 8 [E2] 0.0129
238PU cG E,RI$from |a decay. I|g/I|g(837|g)=2.7 {I8}
238PU L 985.47 4 2- C
238PU B 0.521 7 8.2 1
238PUS B EAV=85.08 22
238PU G 324.07 15 0.058 2 M1+E2 2.8 8 0.29 6
238PU cG M from |a(K)exp=0.17 {I5} (1981Le15)
238PU G 380.33 10 0.043 3 [M1] 0.67
238PU cG M$see |e decay
238PU G 941.41 4 1.98 2 [E1+M2] -0.17 +1-2 0.0079 6
238PU cG MR$from 1990Si11
238PU L 1028.542 18 2+ F
238PU B 263 2 44.8 5 6.1 1
238PUS B EAV=72.20 21
238PU cB $|d(|DL=1/|DL=2)=10 +|@-3 (1990Si11), so the transition is mainly
238PU2cB gamov-Teller
238PU G 882.63 3 3.19 2 E2 0.0159
238PU cG M from |a(K)exp=0.0115 {I8} (1981Le15)
238PU G 984.45 100 1 M1+E2 +23 GT 0.0129
238PU cG M$from |a(K)exp=0.0096 {I3}; K/L=4.4 {I2}; (L1+L2)/L3=19 {I2}; L/M=3.4
238PU2cG {I2} (1981Le15) |a(K)exp=0.0100 from absolute Ice measurements of
238PU3cG 1962Bo03, and absolute I(|g)=23.8 {I6} measurements of 1967Sc34
238PU cG MR From 1990Si11
238PU G 1028.53 2 72.5 3 E2 0.0119
238PU cG M from K/L=4.2 {I2} (1981Le15)
238PU L 1069.924 22 3+ F
238PU B 222 2 11.51 11 6.5 1
238PUS B EAV=60.07 21
238PU G 923.99 2 10.33 5 M1+E2 +44 +72-8 0.0145
238PU cG M$from |a(K)exp=0.0099 {I4} (1981Le15)
238PU2cG |d; from 1990Si11
238PU G 1025.87 2 34.8 2 M1+E2 +31 GT 0.0119
238PU cG M$from |a(K)exp=0.0091 {I4}, K/L=4.3 {I3} (1981Le15)
238PU cG MR$from 1990Si11
238PU L 1082.53 4(4)- 8.5 NS 5 G
238PU cL T$from |b|g(t) (50-300|b)(936.6|g)(t) (1970Be57)
238PU G 114.4 4 0.020 4 (E2) 8.67
238PU cG E,RI$from 1972Wi22
238PU cG M$from an intensity balance at the 968 level, |a|<16; therefore,
238PU2cG mult could be E1, M1 or E2. An intensity balance at the 1083 level
238PU3cG gives |a=11 {I6} which rules out E1 and pure M1. The proposed level
238PU4cG structure requires |DJ=2
238PU G 319.26 20 0.033 3 M1+E2 1.0 5 0.66 23
238PU cG M,MR$from |a(K)exp=0.49 {I20} (1981Le15)
238PU G 421.05 10 0.086 3 [M1] 0.29
238PU G 936.60 5 1.43 1 [E1+M2] -0.24 4 0.009 5 C
238PU cG MR From 1990Si11
238PU L 1202.62 4(3)- K
238PU B 0.54 5 6.6 1
238PUS B EAV=23.11 19
238PU G 120.09 3 0.42 3 M1(+E2) 0.38 LT 3.81 21 C
238PU cG M from |a(L)exp=2.8 {I6}, |a(M)exp=0.69 {I6}, |a(N)exp=0.23
238PUxcG {I3} (1981Le15).
238PU G 132.77 50 0.0095 8 [E1] 0.271
238PU G 174.08 5 0.091 2 [E1] 0.143