239BK    243ES A DECAY                 1973ES02,1989HA27,2010AN0814NDS    201411
239BK  H TYP=FUL$AUT=E. BROWNE, J. K. TULI$CIT=NDS 122, 293 (2014)$
239BK2 H CUT=30-Jun-2013$
239BK C  Decay scheme based on ALPHA-particle measurements and using
239BK2C  QA (243ES)=8072 10 (2012WA38)
239BK C  2010AN08, 2006An13:
239BK c  {+243}Es source obtained from {+247}Md |a decay
239BK c  {+247}Md was produced via {+209}Bi({+40}Ar,2n). {+40}Ar beam with E=187
239BK2c  and 198 MeV from the UNILAC bombarded a 0.450 |mg/cm{+2} metallic
239BK3c  {+209}Bi target evaporated on a 40 |mg/cm{+2} Carbon backing.
239BK4c  The target was covered with a 10 |mg/cm{+2} Carbon foil. The
239BK5c  experiments were performed at the velocity filter SHIP at GSI.
239BK c  Measured: |a, |g, (recoil)|a, half-lives, |a decay branching ratios.
239BK c  Detection system: at the focal plane of SHIP two time-of-flight
239BK2c  detectors, an array of position-sensitive Si detectors and a Ge clover
239BK3c  detector consisting of four Ge crystals were placed.
239BK c  HIVAP code was used to predict the cross sections
239BK2C  reported in 1989HA27. Theoretical calculations: Woods-Saxon potential
239BK CA E,IA$From 2010An08, unless otherwise specified.
239BK CA IA$Renormalized by evaluators to intensities per 100
239BK2CA alpha-particle decays.
239BK CA HF$Using R0(239BK)=1.49, average of R0(238CM)=1.490 20, and
239BK2CA R0(238CF)=1.495 12 (1998AK04).
243ES  P 0             (7/2+,3/2-)     23 S      3              8072      10
243ES cP T$ Measured in 2010An08 from timing of 7893|a.
243ES CP QP$ From 2012WA38
243ES cP $ Configuration=7/2+[633] or 3/2-[521]
239BK  N                        0.61   6
239BK CN BR$ %A=61 6, %EC=39 6
239BK CN BR$from 243ES ALPHA decay (2010An08).
239BK2DN %A AP 3.4, from calculated T(A)=616 s (1997MO25).
239BK  A 7850      20 14.6   20   18
239BK  L 0            (3/2-,7/2+)
239BK  A 7939      10 11     5    24                                           ?
239BK CA E,IA$From 1989HA27.
239BK CA E$ 2010An08 has not reported this ALPHA-particle.
239BK CA IA$From IA(7939)/IA(7899) = (13 7)/(87 12) = 0.149 83 (1989HA27) and
239BK2CA IA(7893)= 79.4 25 (2010AN08).
239BK DA HF$from syst HF AP 50 (247BK, 249BK); therefore, if the ALPHA
239BK2DA branching ratio of 243ES were AP 1, then IA from syst should be AP 5%.
239BK3DA If 239BK GS were 3/2- (rather than the adopted 7/2+) since 243ES GS is
239BK4DA 3/2-, then the expected HF for the GS ALPHA would be AP 200
239BK5DA (50 multiplied by 4, the phase space factor).
239BK6DA This situation seems unlikely given the uncertainties on IA.
239BK  L 47        10  (7/2+,3/2-)
239BK CL E$level not in 2010An08. Suggested from adopted QA.
239BK  A 7893      10 71     5   2.6
239BK CA E,IA$EA=7899 3, IA=87 12 in 1989HA27. 1973ES02 reported
239BK2CA one ALPHA group at EA=7890 20.
239BK DA HF        from ALPHA syst HF AP 1.3 is expected; therefore, %A
239BK2DA of 243ES should be AP 1. From BETA syst of 1973TA30, EC
239BK3DA branching ratio of 243ES is expected to be AP 0.2
239BK  L 197       14
239BK  A 7745      10   3.8  11   15                                           ?
239BK cA IA$Tentative |a from |a(ER) correlated events