240PU 244CM A DECAY 2002DA21,1998YA17,1972SC0125NDS 202511
240PU H TYP=FUL$AUT=C. Morse$CIT=NDS 206, 359 (2025)$CUT=27-Sep-2024$
240PU c The data set is adapted from evaluations by 2006BeZL (also 2006Ch34)
240PU2c and 1998Ak04.
240PU c Main references: 2002Da21, 1998Ya17, 1998Ga19, 1997Ka59, 1996Sa24,
240PU2c 1996Bu50, 1987Go21, 1972Sc01, 1971Gr17, 1966Ba07, 1963Bj03, 1963Dz07,
240PU3c 1960As11.
240PU c Others: 1995Jo23, 1992Fr04, 1991Sh06, 1991Jo07, 1990Pe03, 1987Ko14,
240PU2c 1986Ag04, 1984Sh32, 1984Hi09, 1984Gl03, 1984BuZJ, 1979Be58, 1974Ah02,
240PU3c 1972Ke29, 1972Ko04, 1971Bb10, 1970To08, 1969ScZZ, 1968Du06, 1968Be26,
240PU4c 1964Ma55, 1962Iv01, 1960Be25, 1958Wh09, 1956Hu96, 1956Sm18
240PU c 1990Pe03: Measured detailed subshell ce spectrum for 42.8 and 98.8
240PU2c transitions and deduced conversion coefficients. The |g-ray energies
240PU3c and intensities of five transitions were also measured.
240PU c 1974Ah02: measured ce data for 42.8 transition
240PU c 1972Sc01 (also 1971BeYT,1969ScZZ): Measured |g rays with emphasis on
240PU2c g.s. band transitions.
240PU c 2008Ve05: Measurement of ternary |a and triton emission in {+244}Cm
240PU2c SF decay. Emission probability for long-range |a particles (LRA)/SF
240PU3c event=0.00316 {I9}. Emission probability for triton emission per SF
240PU4c event=0.000198 {I24}
240PU cA E$From 1966Ba07, 1963Dz07 and 1960As11, unless otherwise noted. A few
240PU2cA values are also given by 1998Ga19, 1992Fr04 and 1971Gr17
240PU cA IA$Unless otherwise stated, the values are from the DDEP evaluation
240PU2cA (2006BeZL) based on measurements of 2002Da21, 1998Ya17, 1998Ga19,
240PU3cA 1997Ka59, 1996Sa24, 1996Bu50, 1984BuZJ, 1966Ba07, 1963Dz07, 1960As11,
240PU4cA 1956Hu96.
240PU cA E(A)$From 1971Gr17, with values adjusted as recommended by 1991Ry01
240PU2cA and 1998Ak04.
240PU cG $There seems to be no detailed |g-ray study published in the open
240PU2cG literature. Three main |g rays of 42.8, 98.8 and 152.6 keV were
240PU3cG measured precisely by 1972Sc01. Higher energy gamma rays were
240PU4cG reported in two separate compilations: 1978LeZA reported results from
240PU5cG a 1967 priv. comm. from C.M. Lederer and 1970Sc39 reported gamma-ray
240PU6cG data from 1969ScZZ conference paper by Schmorak et al. Five gamma
240PU7cG rays from 42.8 to 554.5 keV were reported by 1990Pe03 with energies
240PU8cG and intensities.
240PU cG $916|g was neither seen by 1969ScZZ nor reported by 1978LeZA. Upper
240PU2cG limit of intensity: <0.4 (1969ScZZ)
240PU cG E$From 1978LeZA compilation (who quoted priv comm from C.M. Lederer
240PU2cG in 1967), unless otherwise stated. Others: 1990Pe03, 1969ScZZ
240PU3cG (conference paper, results quoted in 1970Sc39 evaluation), 1963Bj03,
240PU4cG 1956Sm18, 1956Hu96
240PU cG E(A)$From 1972Sc01.
240PU cG RI$From weighted average of values from 1978LeZA and 1969ScZZ, unless
240PU2cG otherwise noted.
240PU cG E(X)$|g not seen by 1969ScZZ, upper intensity limit given most of the
240PU2cG |g rays.
240PU cG M$From Adopted Gammas, unless otherwise noted.
240PU cL J$From Adopted Levels.
240PU cL E$From a least-squares fit to E{-|g}
240PU cA HF$The nuclear radius parameter r{-0}({+240}Pu)=1.498180 {I88} is
240PU2cA deduced by assuming HF=1.0 for the ground-state to ground-state alpha
240PU3cA decay branch.
240PU dG $Transition strength is calculated by Java-RULER (version 10-Jun-2025)
240PU DG CC$FROM BrIcc v2.3e (17-Jun-2020) 2008Ki07, "Frozen Orbitals" appr.
244CM P 0.0 0+ 18.11 Y 3 5901.60 3
244CM cP T$as recommended in DDEP evaluation (2006BeZL) based on the
244CM2cP measurements of 1982Po14, 1972Ke29, 1968Be26, 1961Ca01. Others:
244CM3cP 1954St33, 1954Fr19. 1989Ho24 evaluation gives 18.1 y {I1}
244CM4cP T{-1/2}(SF)=1.32|*10{+7} y {I2} (as recommended in the evaluation of
244CM5cP 2000Ho27). The DDEP evaluation (2006BeZL) recommended 1.34|*10{+7} y
244CM6cP {I8} from measurements by 1993Pa29, 1972Ha80, 1970Ba11, 1967Ar09,
244CM7cP 1965Me02, 1963Ma56 and 1952Gh27
244CM cP QP$From 2021Wa16
240PU N 8.5E-7 9 8.5E-7 9 1
240PU cN NR$from measured I|a for 860 and 900 levels and corresponding
240PU2cN relative |g+ce intensities from these levels.
240PU cN BR$%|a=100, %SF=1.37|*10{+-4} {I3} (as recommended by 2003Ak04),
240PU2cN %SF=1.36|*10{+-4} {I1} (DDEP evaluation,2006BeZL).
240PU PN 4
240PU L 0 0+
240PU A 5804.77 5 76.9 1 1.000 A
240PU cA E$other: 5803.6 {I22} (1992Fr04)
240PU cA IA$weighted average (using LWM, normalized residuals and Rajeval's
240PU2cA technique) of 77.16 {I11} (2002Da21), 76.31 {I5} (1998Ya17), 76.63
240PU3cA {I18} (1998Ga19), 76.9 {I5} (1996Sa24), 76.8 {I7} (1996Bu50), 76.98
240PU4cA {I5} (1984BuZJ,1986LoZT); 73.3 (1987Go21); 76.4 (1966Ba07); 76.2
240PU5cA {I20} (1963Dz07); 76.7 {I6} (1956Hu96), assuming minimum uncertainty
240PU6cA of 0.10. The DDEP evaluation (2006BeZL) gives 76.7 {I4}
240PU L 42.824 8 2+ 164 PS 5
240PU cL T$from 1970To08. Other: 173 ps {I15} (1960Be25).
240PU G 42.824 8 3.1E4 3 E2 905 13
240PUF G FLAG=A
240PUX G ECC=1200 200$EL1C=15 2$EL2C=474 51$EL3C=466 50$EOC=10 1$EPC=3.0 4$
240PUX G %IG=0.026 4
240PUS G LC=658 9$MC=183.4 26$NC=50.4 7$OC=11.83 17$PC=1.850 26$QC=0.00390 5
240PUB G BE2W=299 10
240PU cG RI$Deduced during evaluation from %I{-|a} and |a(42.8|g); |g feeding
240PU2cG to 42.8 level from higher level is only |?0.1% of the total
240PU3cG transition intensity of 42.8|g
240PU cG M$From experimental conversion coefficients quoted above from
240PU2cG 1990Pe03. Other: |a(exp)=845 {I93} (1968Du06).
240PU A 5762.64 3 23.1 1 1.966 10 A
240PU cA IA$weighted average (using LWM, normalized residuals and Rajeval's
240PU2cA technique) of 22.80 {I5} (2002Da21), 23.34 {I18} (1998Ga19), 23.69
240PU3cA {I6} (1998Ya17), 23.1 {I5} (1996Sa24), 23.2 {I5} (1996Bu50); 23.00
240PU4cA {I5} (1984BuZJ,1986LoZT); 23.6 (1966Ba07); 23.8 {I9} (1963Dz07); 23.3
240PU5cA {I6} (1956Hu96), assuming minimum uncertainty of 0.10. The DDEP
240PU6cA evaluation (2006BeZL) gives 23.3 {I4}
240PU L 141.684 16 4+
240PU G 98.860 13 16.7E2 20 E2 16.65 23
240PUF G FLAG=A
240PUX G ECC=13 2 (1990Pe03) $EL1C < 3.0 (1990Pe03) $EL2C=6.0 8 (1990Pe03) $
240PUX G EL3C=3.1 7 (1990Pe03)$%IG=0.00142 23
240PUS G LC=12.08 17$MC=3.38 5$NC=0.930 13$OC=0.2191 31$PC=0.0349 5$
240PUS G QC=0.0001221 17
240PU cG RI$Deduced during evaluation from %I{-|a}, |a(98.8|g) and |g feeding
240PU2cG to 141.7 level from higher level. Other:
240PU3cG I|g(98.9|g)/I|g(42.8|g)=0.067 {I7} (1972Sc01).
240PU A 5664 3 0.0204 15644 48
240PU cA E$5664 {I2} (1998Ga19)
240PU cA IA$0.020 {I1} (2002Da21), 0.0205 {I15} (1996Ga19), 0.0135 {I3}
240PU2cA (1996Sa24), 0.0163 {I7} (1984BuZJ) see 1986LoZT; 0.02 (1966Ba07),
240PU3cA 0.021 {I2} (1963Dz07); 0.023 {I2} (1960As11); 0.017 {I3} (1956Hu96)
240PU L 294.31 3 6+
240PU G 152.63 2 1.24E3 12 E2 2.488 35
240PUF G FLAG=A
240PUX G %IG=0.00105 15
240PUS G KC=0.1960 27$LC=1.664 23$MC=0.465 7$NC=0.1278 18$OC=0.0302 4$
240PUS G PC=0.00487 7$QC=2.76E-5 4
240PU cG RI$From average of measured 1240 {I120} (1969ScZZ) and 1237 {I136}
240PU2cG deduced from %I{-|a}, |a(152.6|g) and |g feeding from higher levels.
240PU3cG Other: measured I|g(152.6|g)/I|g(42.8|g)=0.044 {I1} (1990Pe03) and
240PU4cG 0.041 {I1} (1972Sc01) are consistent with 0.040 {I4} from intensities
240PU5cG given here.
240PU cG M$Measured Ice(K) and Ice(L) (1990Pe03) are consistent with E2
240PU A 5513 3 0.00352 18516 27
240PU cA E$5515 {I3} (1998Ga19), 5516.2 (2002Da21)
240PU cA IA$0.0036 {I3} (1960As11); 0.003 {I1} (1963Dz07); 0.0034 (1966Ba07);
240PU2cA 0.0035 (1986LoZT), 0.00342 {I9} (1997Ka59), 0.0038 {I5} (1998Ga19).
240PU3cA Value of 0.012 {I1} (2002Da21) is not used in averaging
240PU L 497.5 10 8+
240PU G 203.2 28 AP [E2] 0.805 11 S
240PUX G %IG AP 2.38E-5
240PUS G KC=0.1470 21$LC=0.479 7$MC=0.1329 19$NC=0.0365 5$OC=0.00865 12$
240PUS G PC=0.001415 20$QC=1.198E-5 17
240PU cG RI$deduced by evaluators from I|a and |a(203.2|g)
240PU A 5315 4E-5 2847
240PU cA E$average of 5316 (1960As11) and 5313 (1966Ba07)
240PU cA IA$from 1966Ba07. Other: |?15|*10{+-5} (1960As11)
240PU L 597.25 11 1-
240PU G 554.5 2 100 E1 0.0117917
240PUX G %IG=8.5E-5 9
240PUS G KC=0.00949 13$LC=0.001734 24$MC=0.000417 6$NC=0.0001127 16$
240PUS G OC=2.77E-5 4$PC=5.13E-6 7$QC=3.00E-7 4
240PU G 597.2 2 61 2 E1 0.0102414
240PUX G %IG=5.2E-5 6
240PUS G KC=0.00826 12$LC=0.001496 21$MC=0.000359 5$NC=9.71E-5 14$
240PUS G OC=2.393E-5 34$PC=4.43E-6 6$QC=2.62E-7 4
240PU A 5215 3 5.6E-5 5 491 44
240PU cA IA$deduced from transition-intensity balance. Measured I|a:
240PU2cA 15|*10{+-5} (1960As11), 10|*10{+-5} (1966Ba07), 4.2|*10{+-5} {i9}
240PU3cA (1997Ka59) are not in good agreement
240PU L 648.77 14 3-
240PU G 506.9 3 10 3 [E1] 0.0140220
240PUF G FLAG=X
240PUX G %IG=8.5E-6 27
240PUS G KC=0.01127 16$LC=0.002081 29$MC=0.000501 7$NC=0.0001353 19$
240PUS G OC=3.33E-5 5$PC=6.14E-6 9$QC=3.53E-7 5
240PU G 605.8 2 9.3 9 [E1] 0.0099714
240PUX G %IG=7.9E-6 11
240PUS G KC=0.00804 11$LC=0.001454 20$MC=0.000349 5$NC=9.44E-5 13$
240PUS G OC=2.326E-5 33$PC=4.31E-6 6$QC=2.55E-7 4
240PU A 5166.72 144E-6 3 3.3E3 25
240PU cA IA$from |g-intensity balance; no direct I|a measurement available
240PU cA E$Calculated based on level energy.
240PU L 860.60 14 0+
240PU G 263.34 15 70 4 [E1] 0.05518
240PUX G %IG=5.9E-5 7
240PUS G KC=0.0434 6$LC=0.00882 12$MC=0.002141 30$NC=0.000578 8$
240PUS G OC=0.0001409 20$PC=2.53E-5 4$QC=1.278E-6 18
240PU G 817.8 2 80 7 E2 0.0182526
240PUX G %IG=6.8E-5 9
240PUS G KC=0.01302 18$LC=0.00389 5$MC=0.000990 14$NC=0.000270 4$OC=6.59E-5 9$
240PUS G PC=1.194E-5 17$QC=5.27E-7 7
240PU G 860.7 E0 12 3
240PUX G %IG=1.02E-5 11
240PU cG E,M,TI$from 1963Bj03.
240PU A 4960 3 1.49E-4 163.5 4
240PU cA IA$1.55|*10{+-4} {I16} (1960As11), 3|*10{+-4} (1966Ba07),
240PU2cA 1.42|*10{+-4} {I16} (1997Ka59)
240PU L 900.21 11 2+
240PU G 251.20 20 13.1 19 [E1] 0.06129
240PUX G %IG=1.11E-5 20
240PUS G KC=0.0481 7$LC=0.00986 14$MC=0.002396 34$NC=0.000647 9$
240PUS G OC=0.0001575 22$PC=2.82E-5 4$QC=1.409E-6 20
240PU G 302.99 15 21.4 16 [E1] 0.04056
240PUX G %IG=1.82E-5 24
240PUS G KC=0.0320 4$LC=0.00637 9$MC=0.001543 22$NC=0.000417 6$OC=0.0001018 14$
240PUS G PC=1.837E-5 26$QC=9.59E-7 13
240PU G 758.6 2 16.1 11 E2 0.0212130
240PUX G %IG=1.37E-5 17
240PUS G KC=0.01484 21$LC=0.00473 7$MC=0.001211 17$NC=0.000331 5$OC=8.05E-5 11$
240PUS G PC=1.452E-5 20$QC=6.09E-7 9
240PU G 857.5 2 6.6 4 [M1,E2] 0.043 26
240PUF G FLAG=X
240PUX G %IG=5.6E-6 7
240PUS G KC=0.034 22$LC=0.007 4$MC=0.0017 9$NC=4.7E-4 23$OC=1.2E-4 6$
240PUS G PC=2.2E-5 11$QC=1.3E-6 9
240PU cG RI$<7.4 (1969ScZZ)
240PU G 900.1 5 1.5 6 [E2] 0.0151221
240PUF G FLAG=X
240PUX G %IG=1.3E-6 5
240PUS G KC=0.01102 15$LC=0.00305 4$MC=0.000771 11$NC=0.0002103 30$
240PUS G OC=5.14E-5 7$PC=9.38E-6 13$QC=4.38E-7 6
240PU cG RI$<1.7 (1969ScZZ)
240PU A 4920 3 5.0E-5 5 5.7 6
240PU cA IA$5.0|*10{+-5} {I5} (1960As11), 1.3|*10{+-4} (1966Ba07),
240PU2cA 4.9|*10{+-5} {I8} (1997Ka59)
240PU L 937.6 (1-) ?
240PU cL $Population of this level in {+244}Cm |a decay is uncertain, thus no
240PU2cL attempt has been made to deduce intensity of |a feeding and/or |g-ray
240PU3cL intensities. It should be mentioned that in earlier evaluations
240PU4cL (2006BeZL,2006Ch34,2004Ch64), this level was considered as populated
240PU5cL in this decay based primarily on the 894.7|g quoted in 1978LeZA. But
240PU6cL the reported intensity of this |g ray relative to that of the 937.6|g
240PU7cL disagrees by at least a factor of 20 with branching ratio in 'adopted
240PU8cL gammas', thus invalidating the assignment of the main intensity of
240PU9cL the 894.7|g to {+244}Cm decay.
240PU G 894.7 5 ?
240PUF G FLAG=X
240PU cG RI$2.1 {I6} (1978LeZA) is too high by at least a factor of 20 with
240PU2cG branching ratio in 'adopted gammas'. In 1969ScZZ, this |g was not
240PU3cG seen, the authors quoted an upper limit of I|g<1.2.
240PU G 937.6 10 0.5 5 ?
240PUF G FLAG=X
240PUX G %IG=4.E-7 4
240PU cG RI$<0.75 (1969ScZZ)