244CM 244AM B- DECAY (10.1 H) 1984HO02 17NDS 201711
244CM H TYP=FUL$AUT=C.D. Nesaraja$CIT=NDS 146, 387 (2017)$CUT=31-Aug-2017$
244CM c 1984Ho02: {+244}Am was produced by neutron irradiation on {+243}Am
244CM2c High Flux Reactor of the Institut Laue-Langevin at Grenoble. |g ray
244CM3c energies and intensities were measured with two curved-crystal
244CM4c spectrometers. Conversion electron data were measured with the beta
244CM5c spectrometer
244CM c 1963Ha29: {+244}Am was produced by neutron irradiation on {+243}Am
244CM2c at the DR3 reactor at Riso National Laboratory in Denmark.
244CM3c The irradiation was followed by radiochemical separation to extract
244CM4c the {+244}Am. Delayed coincidence technique between |b particles
244CM5c and conversion electron was used to determine the half-life for
244CM6c decay of the 1042 keV isomeric state using a plastic scintillator.
244CM7c Angular correlations were performed using a NaI(Tl) detector for the
244CM8c 746-154 |g cascade at 90|', 135|', and 180|'
244CM c 1967Sc34: {+244}Am was produced by neutron irradiation on {+243}Am.
244CM2c Gammas from the decay were measured with a Ge detector. Intensities
244CM3c relative to the 744|g were measured for the 99.3|g, 153.7|g and the
244CM4c 205 |g.
244CM c 1962Va08: {+244}Am was produced by neutron irradiation on enriched
244CM2c {+243}Am at the Argonne Reactor CP-5. The decay of the chemically
244CM3c purified {+244}Am was measured by |g singles and |g|g and X-ray
244CM4c coincidence methods using the Tl activated NaI detector. |g|b
244CM5c coincidence were observed using scintillation counting techniques
244CM6c The conversion electron data were measured with a propane flow-type
244CM7c proportional counter with two different types of end windows
244CM c 1962Ch19: {+244}Am was produced by neutron irradiation on {+243}Am
244CM2c at the DR2 reactor at Riso National Laboratory in Denmark. |g rays
244CM3c and electrons were measured using the Naton scintillator. Half
244CM4c life of the 42.9 keV level was determined by the delayed coincidence
244CM5c technique between |g rays and conversion electron lines
244CM DG CC$FROM BrIcc v2.3b (16-Dec-2014) 2008Ki07, "Frozen Orbitals" appr.
244AM P 0.0 (6-) 10.1 H 1 1427.3 10
244CM N 20 4 1.00
244CM PN 20 4 3
244CM cN NR$From intensity balance at the 1040-keV level:
244CM2cN I|b(to 1040 level)=|SI(|g+ce) for |g's from 1040 level=100%.
244CM3cN The parent decays only to the 1040 level (1984Ho02, 1963Ha29,
244CM4cN 1962Va08)
244CM c The decay scheme is given as constructed by 1962Va08, and confirmed
244CM2c by 1984Ho02.
244CM cG E$From measurements of 1984Ho02. Earlier measurements: 1962Va08,
244CM2cG 1967Sc34.
244CM cG RI$Photon intensities measured by 1984Ho02 following
244CM2cG {+243}Am(n,|g), and given as per 100 neutron captures.
244CM3cG Other measured photon intensities: 1962Va08, 1967Sc34.
244CM cG M$From conversion electron measurements of 1984Ho02 and 1962Va08.
244CM cL E$From Adopted Levels
244CM L 0.0 0+ 18.11 Y 3
244CM cL T$From Adopted Levels
244CM L 42.957 9 2+ 97 PS 5
244CM cL T$From delayed coincidence technique between |g rays and conversion
244CM2cL electron lines by 1962Ch19
244CM G 42.965 10 0.0048 APE2 1050
244CMS G LC=760 11$MC=214 3
244CMS G NC=59.5 9$OC=14.38 21$PC=2.35 4$QC=0.00578 9
244CM cG RI$I|g listed in 1984Ho02 was calculated from the experimental
244CM2cG electron intensities (which include beta decay activities
244CM3cG from the 26- minute {+244}Am) and theoretical conversion coefficients,
244CM4cG The evaluator has deduced the I|g from the
244CM5cG requirement that I(|g+ce)(42.965|g)=100% which gives
244CM6cG I(|g+ce)(42.965|g)=0.0048 {I10}. In addition, from intensity balance
244CM7cG I(|g+ce)(42.965|g)=I(|g+ce)(99.383|g)=4.7 {I9}, one obtains
244CM8cG I|g(42.965|g)=0.0044 {I8}.
244CM cG $Ice(L2): Ice(L3):Ice(M2):Ice(M3):Ice(N2):Ice(N3)=
244CM2cG 920 {I450}:608 {I200}:118 {I25}:92 {I20}:53 {I9}:22 {I6} (1984Ho02).
244CM3cG These values were listed by 1984Ho02 as the experimental
244CM4cG conversion coefficients. Since the photon intensity was
244CM5cG calculated from theoretical conversion coefficients,
244CM6cG they are quoted here as relative ce intensities.
244CM cG $Ice L{-12}/Ice L{-3}=1.4 (1962Va08)
244CM L 142.340 10 4+
244CM G 99.383 4 0.23 4 E2 19.3
244CMS G LC=13.93 20$MC=3.94 6
244CMS G NC=1.095 16$OC=0.265 4$PC=0.0441 7$QC=0.000180 3
244CM cG $|a(L1)exp=0.46 {I11}, |a(L2)exp=8.3 {I19},
244CM2cG |a(L3)exp=5.1 {I11}, |a(M2)exp=2.6 {I6}, |a(M3)exp=1.6 {I4},
244CM3cG |a(N2)exp=1.25 {I27}, |a(N3)exp=0.66 {I15} (1984Ho02).
244CM cG $Ice L{-12}/Ice L{-3}=1.7, |a(total)exp=20 (1962Va08)
244CM L 296.204 10 6+
244CM G 153.863 2 0.82 16E2 2.81
244CMS G KC=0.1741 25$LC=1.90 3$MC=0.536 8
244CMS G NC=0.1492 21$OC=0.0362 5$PC=0.00610 9$QC=3.92E-5 6
244CM cG $|a(L1)exp=0.26 {I6}, |a(L2)exp=1.27 {I28},
244CM2cG |a(L3)exp=0.69 {I15}, |a(M1)exp=0.08 {I4}, |a(M2)exp=0.37 {I8},
244CM3cG |a(M3)exp=0.25 {I5}, |a(N2)exp=0.15 {I3}, |a(N3)exp=0.20 {I4}
244CM4cG (1984Ho02).
244CM cG $K/L=0.09, |a(K)exp=0.19, |a(L) exp=2.1,
244CM2cG total Ice=50% (1962Va08).
244CM L 501.779 11 8+
244CM G 205.575 4 0.017 4 [E2] 0.887
244CMS G KC=0.1409 20$LC=0.541 8$MC=0.1514 22
244CMS G NC=0.0421 6$OC=0.01025 15$PC=0.001746 25$QC=1.644E-5 23
244CM cG $Ice(L)=0.1% (1962Va08).
244CM L 1040.181 11 6+ 34 MS 2 M
244CM cL T$From decay curve measurements in delayed coincidence between
244CM2cL |b particles and conversion electrons (1963Ha29)
244CM B 100 5.628 6
244CMS B EAV=109.60 32
244CM cB E$387 measured by 1962Va08
244CM G 538.400 16 0.033 7 [E2] 0.0495
244CMS G KC=0.0292 4$LC=0.01492 21$MC=0.00396 6
244CMS G NC=0.001096 16$OC=0.000271 4$PC=4.93E-5 7$QC=1.637E-6 23
244CM cG $Ice(K)=0.02% (1962Va08), Ice(K)=0.019% (1963Ha29)
244CM G 743.971 5 3.3 9 M1+E2 -0.92 5 0.077 3
244CMS G KC=0.0593 24$LC=0.0130 4$MC=0.00321 10
244CMS G NC=0.00088 3$OC=0.000223 7$PC=4.34E-5 14$QC=2.86E-6 11
244CM cG $A{-2}=-0.050 {I12}, A{-4}=0.059 {I15} for (744|g)(154|g)(|q)
244CM2cG cascade (1963Ha29).
244CM cG MR$from |g|g(|q) data of 1963Ha29 (Author had used the
244CM2cG Rose phase convention) . Others: |d|<1.1 from
244CM3cG |a(K)exp=0.08 {I2}, |a(L1)exp=0.012 {I4},
244CM4cG |a(L2)exp=0.003 {I1} (1984Ho02). |d=0.9 {I+4-3} from
244CM5cG K/L=4.5, |a(K)exp=0.06, |a(L)exp=0.01 with a 10 % uncertainty,
244CM6cG (1962Va08)
244CM cG $total Ice=5.8% (1962Va08),Ice(K)=4.5% (1963Ha29)
244CM G 897.848 7 1.4 4 E2 0.01697
244CMS G KC=0.01215 17$LC=0.00358 5$MC=0.000912 13
244CMS G NC=0.000251 4$OC=6.29E-5 9$PC=1.186E-5 17$QC=5.93E-7 9
244CM cG $|a(K)exp=0.012 {I4}. The electron intensity was used as a
244CM2cG calibration point for the measured |g and electron intensities
244CM3cG (1984Ho02)
244CM cG $K/L=3.3, |a(K)exp=0.01, |a(L)exp=0.003,
244CM2cG total Ice=0.41% (1962Va08), Ice(K)=0.30% (1963Ha29)