243CF 247FM A DECAY (31 S) 2006He27 14NDS 201408
243CF H TYP=FUL$AUT=C.D. Nesaraja, E.A. McCutchan$CIT=NDS 121, 695 (2014)$
243CF2 H CUT=30-Sep-2013$
243CF c {+247}Fm-%|a decay: from 2006He27. Other: |>50% (1967Fl15).
243CF c 2006He27: {+247}Fm activity from |a decay chain of {+255}Rf produced
243CF2c in {+207}Pb({+50}Ti,2n), E({+50}Ti)=4.85 MeV/nucleon and |a decay of
243CF3c {+251}No produced in {+206}Pb({+48}Ca,3n), E({+48}Ca)=4.8
243CF4c MeV/nucleon. Isotopes separated with the velocity filter SHIP and
243CF5c implanted into a position-sensitive 16-strip PIPS detector. Measured
243CF6c E|a, I|a, recoil-|a coincidences, recoil-|a(t), conversion electrons
243CF7c with the PIPS detector and E|g, I|g, |g|g and |a|g|g coincidences
243CF8c using a HPGe Clover detector. Early results presented in 2005KuZZ,
243CF9c 2004He28.
243CF c Others: 1989He03, 1967Nu01, 1967Fl15
243CF cA HF$r{-0}({+243}Cf)=1.49 {I2}, extrapolated from r{-0} systematics
243CF2cA given in 1998Ak04.
243CF cA $1989He03 and 1967Fl15 both observe complex |a structures. 1967Fl15
243CF2cA report E|a=7870 {I50} with I|a|?70 and E|a=7930 {I50} with I|a|?30,
243CF3cA while 1989He03 report sum peaks of |a groups with conversion
243CF4cA electrons at E=8010 {I15} and 8060 {I15} with equal relative
243CF5cA intensities. 2006He27 also observe a very broad distribution in |a
243CF6cA energies, however, through |a|g and |a-K x-ray coincidences, they
243CF7cA establish that there is only a single |a peak, which is significantly
243CF8cA broadened due to summing with a number of different conversion
243CF9cA electron energies.
243CF cG E$From 2006He27, observed in coincidence with |a decays.
243CF DG CC$FROM BrIcc v2.3a (30-Jun-2013) 2008Ki07, "Frozen Orbitals" appr.
243CF cL E(a)$Proposed band based on 1/2+[631] Nilsson level.
243CF cL E(b)$Proposed band based on 5/2+[622] Nilsson level.
243CF cL E(c)$Proposed bandhead of 7/2+[624] Nilsson level.
247FM P 0.0 (7/2+) 31 S 1 8258 10
247FM cP T$from recoil-|a(t) in 2006He27. Others: 29 s {I1} (2004He28), 37 s
247FM2cP {I+21-10} (1989He03) both earlier results by same first author as in
247FM3cP 2006He27, 35 s {I4} (1967Fl15)
243CF N 0.64
243CF L 0.0 (1/2+) a
243CF L 7 AP (3/2+) a
243CF cL E$from systematics of 3/2+ to 1/2+ spacings in the 1/2+[631] band,
243CF2cL E=7 keV {I2} is extrapolated by 2006He27.
243CF L 67 AP (5/2+) a
243CF L 149 AP (5/2+) b
243CF cL J$from systematics of the energy difference between the 7/2+ member
243CF2cL and the 5/2+ bandhead of the 5/2+[622] Nisson level.
243CF G 82.2 2
243CF G 141.8 2 (M1) 14.00
243CFS G KC=10.88 16$LC=2.33 4$MC=0.573 9
243CFS G NC=0.1589 24$OC=0.0412 6$PC=0.00797 12$QC=0.000469 7
243CF cG $|a(K)exp=11 {I5} (2004He28)
243CF cG M$from |a(K)exp
243CF L 193 AP (7/2+) b
243CF cL E$from 315-keV level - 122|g. Shown as |?197 in Fig. 5 of 2006He27.
243CF L 315 AP (7/2+) c
243CF cL J$unhindered |a decay from {+247}Fm ground state with J|p=(7/2+) and
243CF2cL configuration 7/2+[624]; the same J|p and configuration are suggested
243CF A 7824 18100 0.60 AP
243CF cA E$|DE=18 keV from 10 keV statistical and 15 keV systematic
243CF2cA uncertainties combined in quadrature. Other: 7840 keV {I20} (2004He28)
243CF G 121.8 2
243CF G 166.6 2 (M1) 8.89
243CFS G KC=6.93 10$LC=1.471 22$MC=0.362 6
243CFS G NC=0.1002 15$OC=0.0260 4$PC=0.00502 8$QC=0.000295 5
243CF cG $|a(K)exp=6.7 {I25} (2004He28)
243CF cG M$from |a(K)exp