256FM 256MD EC DECAY (77.7 M) 2000AH02 17NDS 201704
256FM H TYP=FUL$AUT=BALRAJ SINGH$CIT=NDS 141, 327 (2017)$CUT=22-Mar-2017$
256FM c 2000Ah02: {+256}Md formed in {+253}Es(|a,n),E=35-45 MeV reaction at the
256FM2c Argonne cyclotron facility. Target was 99.4% enriched. The recoiling Md
256FM3c nuclei were stopped in He gas and collected to impinge on a Pt disk.
256FM2c Measured E|g, I|g, E(x ray), I(x ray), E|a, I|a, |a-|g coin using Si
256FM3c and Ge(Li) detectors
256FM c The Fermium K x-ray energies and intensities were measured by 2000Ah02,
256FM2c 1993Mo18 and 1970Fi12 and 1993Mo18. Values from 2000Ah02 are given here
256FM cE TI,IE$From Fig. 7 in 2000Ah02, adjusted by the decay branching ratio
256FM2cE of 90.8% {I7}
256FM cE TI(X)$Combined feeding for g.s. and 48.3 level
256FM cG $Fm K|a{-2} x ray: E(x ray)=115.30 {I8}, I(x ray)=266 {I12} (2000Ah02)
256FM cG $Fm K|a{-1} x ray: E(x ray)=121.10 {I8}, I(x ray)=409 {I20} (2000Ah02)
256FM cG $Fm K|b{-1} x ray: E(x ray)=136.0 {I2}, I(x ray)=143 {I10} (2000Ah02)
256FM cG $Fm K|b{-2} x ray: E(x ray)=140.6 {I2}, I(x ray)=57 {I5} (2000Ah02)
256FM cG CC$Theoretical values from BrIcc code (2008Ki07) using "Frozen orbital"
256FM2cG approximation, value overlaps M1 and E2, when mixing ratio is unknown
256FM cL E$From least-squares fit to E|g values
256FM cL E(A)$Proposed as member of configuration=|n7/2[613]~#|n9/2[615]
256FM2cL (2000Ah02)
256FM cL E(B)$Proposed as member of configuration=|p7/2[633]~#|p7/2[514]
256FM2cL (2000Ah02)
256FM cL J$From Adopted Levels
256MD P 0.0 (1-) 77.7 M 18 1970 SY
256MD cP J,T$From {+256}Md Adopted Levels
256MD cP QP$1970 {I120} (syst,2017Wa10)
256MD cP $Probable configuration=|n7/2[613]~#|p7/2[514] (2000Ah02)
256FM N 0.072 4 0.072 4 0.908 7 1.1014
256FM cN NR$Deduced by evaluator from equating summed |g-transition intensity
256FM2cN of 83.6 {I47} from 1405 level=6% as given in Fig. 7 of 2000Ah02, which
256FM3cN is most likely deduced from total measured x-ray intensity, as the
256FM4cN the component from |b{++} is expected to be negligible
256FM PN 1.00 3
256FM L 0.0 0+
256FM E 0.12 58 6.6 58 X
256FMS E EAV=455 53$CK=0.7436 11$CL=0.1861 13$CM+=0.0681 6
256FM L 48.09 17 2+
256FM E X
256FM G 48.3 3 [E2] 832 S
256FM cG E$from Adopted Gammas
256FMS G LC=597 9$MC=171.8 24
256FMS G NC=48.9 7$OC=12.31 18$PC=1.93 3$QC=0.00466 7
256FM L 159.66 23 4+
256FM G 111.6 2 [E2] 15.96 27 5 S
256FM cG TI$from intensity balance at 160 level, value is in relative units on
256FM2cG the same scale as gamma-ray intensities
256FM cG E$from Adopted Gammas
256FMS G LC=11.45 16$MC=3.30 5
256FMS G NC=0.937 14$OC=0.237 4$PC=0.0379 6$QC=0.0001575 22
256FM L 682.16 15 (2+)
256FM E 1.8 LT 7.7 GT 1.8 LT ?
256FMS E CK=0.731 5$CL=0.196 3$CM+=0.0726 14
256FM G 634.1 2 94 10[M1,E2] 0.15 11 @
256FM cG RI$intensity divided by 2000Ah02 based on data in 1989Ha10 for
256FM2cG {+256}Es |b{+-} decay
256FMS G KC=0.115 90$LC=0.028 16$MC=0.0071 37
256FMS G NC=0.0020 11$OC=5.2E-4 28$PC=9.9E-5 55$QC=4.9E-6 37
256FM G 682.1 2 100 [E2] 0.0372
256FMS G KC=0.0232 4$LC=0.01029 15$MC=0.00273 4
256FMS G NC=0.000768 11$OC=0.000199 3$PC=3.58E-5 5$QC=1.111E-6 16
256FM L 725.36 21 (3+)
256FM G 565.8 3 11 2 [M1,E2] 0.21 16
256FMS G KC=0.16 13$LC=0.039 21$MC=0.0098 50
256FMS G NC=0.0027 14$OC=7.2E-4 37$PC=1.36E-4 74$QC=6.6E-6 50
256FM G 677.3 2 48 4 [M1,E2] 0.129 92 @
256FM cG RI$intensity divided, based on data in 1989Ha10 for
256FM2cG {+256}Es |b{+-} decay
256FMS G KC=0.097 74$LC=0.023 13$MC=0.0059 31
256FMS G NC=0.00164 86$OC=4.3E-4 23$PC=8.2E-5 46$QC=4.1E-6 30
256FM L 1326.13 18 (1+) A
256FM E 13 6.2
256FMS E CK=0.68 3$CL=0.229 18$CM+=0.088 9
256FM G 600.8 4 18 3 [E2] 0.0489
256FMS G KC=0.0285 4$LC=0.01493 22$MC=0.00400 6
256FMS G NC=0.001127 16$OC=0.000291 5$PC=5.18E-5 8$QC=1.442E-6 21
256FM G 644.0 2 109 9 [M1,E2] 0.15 11
256FMS G KC=0.111 86$LC=0.027 15$MC=0.0068 36
256FMS G NC=0.00189 99$OC=5.0E-4 27$PC=9.5E-5 53$QC=4.7E-6 35
256FM G 1278.0 3 15 2 [M1,E2] 0.025 15
256FMS G KC=0.019 12$LC=0.0043 22$MC=0.00106 53
256FMS G NC=3.0E-4 15$OC=7.8E-5 39$PC=1.50E-5 77$QC=8.0E-7 47$IPC=2.1E-5 13
256FM G 1326.1 3 36 3 [M1] 0.0356 &
256FMS G KC=0.0277 4$LC=0.00584 9$MC=0.001434 20
256FMS G NC=0.000400 6$OC=0.0001056 15$PC=2.05E-5 3$QC=1.144E-6 16
256FMS G IPC=5.51E-5 8
256FM L 1360.4 3 (2+) A
256FM E 4.5 6.6
256FMS E CK=0.68 3$CL=0.233 21$CM+=0.090 10
256FM G 634.1 2 25 10[M1,E2] 0.15 11 @ ?
256FMS G KC=0.115 90$LC=0.028 16$MC=0.0071 37
256FMS G NC=0.0020 11$OC=5.2E-4 28$PC=9.9E-5 55$QC=4.9E-6 37
256FM G 677.3 2 @ ?
256FM cG E$this |g ray is not included in the Adopted dataset
256FM G 1200.6 5 14 3 [E2] 0.01232
256FMS G KC=0.00903 13$LC=0.00244 4$MC=0.000620 9
256FMS G NC=0.0001733 25$OC=4.53E-5 7$PC=8.48E-6 12$QC=3.72E-7 6$IPC=2.49E-6 5
256FM G 1312.3 3 33 3 [M1,E2] 0.024 13
256FMS G KC=0.018 11$LC=0.0040 20$MC=9.9E-4 49
256FMS G NC=2.8E-4 14$OC=7.3E-5 36$PC=1.40E-5 71$QC=7.5E-7 43$IPC=3.1E-5 18
256FM L 1374.15 18 (1-) B
256FM E 10 6.2
256FMS E CK=0.67 4$CL=0.235 23$CM+=0.090 11
256FM G 692.0 2 73 6 [E1] 0.00965
256FMS G KC=0.00769 11$LC=0.001477 21$MC=0.000359 5
256FMS G NC=9.95E-5 14$OC=2.61E-5 4$PC=4.92E-6 7$QC=2.50E-7 4
256FM G 1326.1 3 36 3 [E1] 0.00325 &
256FMS G KC=0.00258 4$LC=0.000468 7$MC=0.0001128 16
256FMS G NC=3.13E-5 5$OC=8.24E-6 12$PC=1.580E-6 23$QC=8.69E-8 13$IPC=4.71E-5 7
256FM G 1374.1 3 38 4 [E1] 0.00308
256FMS G KC=0.00243 4$LC=0.000441 7$MC=0.0001062 15
256FMS G NC=2.95E-5 5$OC=7.75E-6 11$PC=1.488E-6 21$QC=8.22E-8 12
256FMS G IPC=6.88E-5 10
256FM L 1405.22 21 (2-) B
256FM E 5.4 6.4
256FMS E CK=0.67 4$CL=0.24 3$CM+=0.093 13
256FM G 680.0 3 23 2 [E1] 0.00995
256FMS G KC=0.00792 12$LC=0.001526 22$MC=0.000371 6
256FMS G NC=0.0001028 15$OC=2.69E-5 4$PC=5.08E-6 8$QC=2.58E-7 4
256FM G 723.0 2 27 3 [E1] 0.00893
256FMS G KC=0.00712 10$LC=0.001361 19$MC=0.000330 5
256FMS G NC=9.17E-5 13$OC=2.40E-5 4$PC=4.54E-6 7$QC=2.32E-7 4
256FM G 1357.1 3 33 3 [E1] 0.00314
256FMS G KC=0.00248 4$LC=0.000450 7$MC=0.0001084 16
256FMS G NC=3.01E-5 5$OC=7.92E-6 11$PC=1.520E-6 22$QC=8.38E-8 12$IPC=6.06E-5 9