242NP 242U B- DECAY 1979HA26 22NDS 202211
242NP H TYP=FUL$AUT=M.J. Martin, C.D. Nesaraja$CIT=NDS 186, 261 (2022)$
242NP2 H CUT=31-Dec-2021$
242NP DG CC$FROM BrIcc v2.3e (17-Jun-2020) 2008Ki07, "Frozen Orbitals" appr.
242U P 0.0 0+ 16.8 M 5 1200 SY
242U cP QP$1200 {I280} (2021Wa16)
242NP N 0.049 15 1.0 1.0
242NP PN 0.049 15 1.0 3
242NP cN NR the absolute |g intensities were obtained by normalizing
242NP2cN the relative I|g's to I(735.9|g)=4.9 {I15} per 100 |b{+-} decays of
242NP3cN 2.2-min {+242}Np. The {+242}U source was in equilibrium with {+242}Np,
242NP c The level scheme is given as constructed by 1979Ha26 from E|g and I|g
242NP2c considerations only. Coincidence data were not taken because of
242NP3c insufficient source intensity. Since conversion electron data were
242NP4c not taken, low-energy highly converted transitions, if any,
242NP5c would not have been seen. The level scheme is tentative.
242NP cB I|b's are deduced from intensity balance at each level.
242NP2cB Because of the possibility of missing highly converted transitions and
242NP3cB because of the tentative nature of the decay scheme, the |b
242NP4cB transitions and their intensities are also tentative.
242NP cG E$From 1979Ha26
242NP cG RI$Relative photon intensities (1979Ha26)
242NP cG M$The |g's are assumed to be dipole or E2. Further, the 55.58
242NP2cG and 67.60|g's must be E1 or else the total intensity of
242NP3cG these transitions would be greater than 100%.
242NP cL J$From adopted levels
242NP G 160.4 1 15 4
242NP G 182.0 1 14 1
242NP G 220.4 3 3 1
242NP G 320.6 1 4 1
242NP L 0.0 (1+) 2.2 M 2
242NP B 81 6 5.7 4
242NPS B EAV=4.0E2 11
242NP cB IB$From 100-|9(I(|g+ce) to the g.s.)
242NP cB Existence of this branch is deduced by 1979Ha26 from
242NP2cB the fact that the sum of the absolute |g intensities amounts to
242NP3cB about 30% of the total energy.
242NP cB Log{Ift} of 5.7 is consistent with a |b transition from
242NP3cB the |n7/2[624] to the |p5/2[642] Nilsson state
242NP L 55.58 6 (1-,0-)
242NP B 3.8 12 7.0 5
242NPS B EAV=3.7E2 11
242NP G 55.58 6 75 3 E1 0.601 9
242NPS G LC=0.451 6$MC=0.1120 16
242NPS G NC=0.0298 4$OC=0.00690 10$PC=0.001126 16$QC=4.16E-5 6
242NP L 67.60 5 (1-,0-)
242NP B 10 4 6.6 5
242NPS B EAV=3.7E2 11
242NP G 67.60 5 184 5 E1 0.359 5
242NPS G LC=0.269 4$MC=0.0666 9
242NPS G NC=0.01774 25$OC=0.00414 6$PC=0.000692 10$QC=2.76E-5 4
242NP L 293.83 8
242NP B 0.5 LT 7.5 GT
242NPS B EAV=2.9E2 11
242NP G 226.3 1 2 1
242NP G 238.2 1 4 2
242NP L 329.72 9(1,0)
242NP B 0.8 3 7.3 6
242NPS B EAV=2.7E2 11
242NP G 274.2 2 2.2 8
242NP G 329.7 1 15 1
242NP L 598.26 15(1,0)
242NP B 0.53 21 6.9 9
242NPS B EAV=180 98
242NP G 304.5 2 6.8 15
242NP G 530.6 2 4 2
242NP L 640.54 8(1+,0+)
242NP B 3.6 11 6.0 10
242NPS B EAV=166 97
242NP G 572.9 1 36 2
242NP G 585.0 1 37 2