28MG 28NA B- DECAY 2012KU11,1984GU19 13NDS 201310
28MG H TYP=FUL$AUT=M. Shamsuzzoha Basunia$CIT=NDS 114, 1189 (2013)$
28MG2 H CUT=1-Apr-2013$
28MG C Others: 1979DE02, 1974RO31
28MG C Sum of decay energies of this dataset is 13992 keV {I735} cf.
28MG2C 14030 keV {I10} obtained from 28NA B- DECAY ^Q(g.s.) and branching.
28MG C 2012KU11: B- decay is studied in polarized 28NA isotope. It was
28MG2C produced from fragmentation of tantalum targets by 500 MeV protons at
28MG3C ^TRIUMF. Separated 28NA{++} beam, E=30.6 keV, was neutralized by
28MG4C colliding with the Na vapor and nuclear spin was polarized (|?50%)
28MG5C by collinear optical pumping. Polarized 28NA beam was ionized and
28MG6C transported with the polarization direction perpendicular to the beam
28MG7C direction. The spin orientation was flipped by changing the laser
28MG8C helicity in every 5 minutes. The beam was focused and stopped on a Pt
28MG9C foil. EG, RI, B-G and G-G coincidence measurements were performed
28MGaC using 9 HPGe detectors. A pair of plastic scintillators placed in front
28MGbC of each HPGe detectors. Deduced level scheme, JPI.
28MG C 1984GU19: 28NA was produced from fragmentation of iridium target by
28MG2C 10 GeV protons from the ^CERN synchrotron, recoiled fragments were
28MG3C thermalized in graphite, ionized and mass-separated; a thin plastic
28MG4C scintillator, 2 Ge(Li) detectors, Measured: EG, B-GG COIN, RI.
28MG C 1979DE02,1974RO31: 28NA was produced from fragmentation of uranium
28MG2C target by 24 GeV protons from the ^CERN synchrotron, recoiled fragments
28MG3C were thermalized in graphite, ionized and mass-separated; a thin
28MG4C plastic scintillator, 2 Ge(Li) detectors, Measured: EG, B-GG COIN,
28MG5C absolute RI.
28MG C 1984GU19, 1979DE02 and 1974RO31 are all from the same research group.
28MG CB IB$Deduced by the evaluator from G-ray intensity balance at each level
28MG CG E$From 2012Ku11, except otherwise noted. Some G-ray energies
28MG2CG in 2012KU11 are discrepant compared to 1984Gu19 or other datasets. The
28MG3CG source of the discrepancy is not clear.
28MG CG RI$From 2012Ku11, except otherwise noted. G-ray intensities reported
28MG2CG in 2012Ku11 and 1984Gu19 are mostly in agreement, except a few.
28MG CG E(A)$From Adopted Gammas
28MG CL E$From a least-squares fit to G-ray energies.
28MG CL J,T$From Adopted Levels, except otherwise noted
28MG CL J(Z)$Assigned in 2012Ku11, based on the angular distribution
28MG2CL measurements of B and G-ray emissions.
28MG CL J(Y)$Assignment reconfirmed in 2012Ku11, based on the angular
28MG2CL distribution measurements of B and G-ray emissions.
28NA P 0.0 1+ 30.5 MS 4 14030 10
28MG N 1.0 1.0 1.0
28MG PN 3
28MG L 0.0 0+ 20.915 H 9
28MG B 60 5 4.6 1
28MGS B EAV=6741.7 50
28MG L 1473.55 102+ Y
28MG B 11 6 5.1 2
28MGS B EAV=6013.7 50
28MG G 1473.5 1 37 5
28MG CG RI$2012Ku11 used same value as in 1984Gu19
28MG L 3862.15 150+ Y
28MG B 20.1 19 4.42 1
28MGS B EAV=4832.9 50
28MG G 2388.5 1 22 3 A
28MG CG RI$Other: 18.7 25 (1984Gu19)
28MG L 4021.1 5 4+
28MG G 2547.7 6 0.1 LT A
28MG L 4554.6 52+
28MG B 1.00 25 5.6 1
28MGS B EAV=4490.5 50
28MG G 3082.4 11 1.3 3 A
28MG CG RI$Other: 2.7 4 (1984Gu19)
28MG L 4561.0 51+ Y
28MG B 3.2 4 5.1 1
28MGS B EAV=4487.4 50
28MG G 3087.3 5 4.0 6 A
28MG CG RI$Other: 2.6 5 (1984Gu19)
28MG L 4878.7 13 2+
28MG B 0.2 1 6.2 2
28MGS B EAV=4330.3 50
28MG G 3404.9 13 0.2 1
28MG L 5171.5 5 3-
28MG B 0.3 1 8.2 2 1U
28MGS B EAV=4185.6 50
28MG G 1150.5 4 0.1 LT A
28MG G 3696.8 6 0.3 1 A
28MG L 5193.1 5 1
28MG G 5192.6 5 0.4 1
28MG L 5270.1 41+
28MG B 1.5 5 5.2 2
28MGS B EAV=4136.9 50
28MG G 5269.6 4 2.3 4
28MG CG E$Weighted average of 5269.1 keV 5 (2012Ku11) and 5271.7 keV 10
28MG2CG (1984Gu19).
28MG CG RI$From 2012Ku11. Other: 0.50 15 (1984Gu19)
28MG L 5470.2 5 2
28MG B 0.1 LT 6.4 GT
28MGS B EAV=4038.0 50
28MG G 3996.3 5 0.1 LT
28MG L 5916.9 11 (0,1,2)+ Y
28MG B 0.3 1 5.8 2
28MGS B EAV=3817.3 50
28MG G 4443.0 11 0.3 1
28MG L 6545.0 5 (2+)
28MG B 0.2 1 5.8 2
28MGS B EAV=3507.1 50
28MG G 1373.4 2 0.1 LT
28MG G 1990.7 5 0.2 1
28MG L 7200.9 7 (0,1,2)+
28MG B 0.5 1 5.2 1
28MGS B EAV=3183.5 50
28MG G 2007.7 4 0.5 1 C
28MG L 7461.8 5 (2+) Z
28MG B 1.4 2 4.7 1
28MGS B EAV=3054.9 50
28MG G 2191.7 3 0.8 1 C
28MG G 2290.9 6 0.1 LT C
28MG G 2906.9 6 0.6 1 C