212TH    216U A DECAY (0.7 MS)         2015MA37                  20NDS    202009
212TH  H TYP=FUL$AUT=K. Auranen and E.A. McCutchan$CIT=NDS 168, 117 (2020)$
212TH2 H CUT=1-Aug-2020$
212TH c  DICT$216U A DECAY (0.7 MS)={+216}U |a decay (0.7 ms)
212TH c  2015Ma37: {+216}U activity from {+180}W({+40}Ar,4n) reaction with
212TH2c  E({+40}Ar)=189.5 MeV from the Sector-Focusing Cyclotron facility at
212TH3c  HIRFL-Lanzhou. Fragments separated with gas-filled recoil separator
212TH4c  for heavy ions (SHANS). Measured E|a, |a|a correlations,
212TH5c  implant-|a(t) using position-sensitive silicon strip detector
212TH6c  surrounded by eight silicon detectors in a box-like arrangement.  Six
212TH7c  correlated decay chains were observed for the ground state of {+216}U
212TH8c  and two correlated decay chains were observed for an isomeric level
212TH9c  in {+216}U. Results also presented in 2016Zh33.
212TH cA HF$From r{-0}=1.488 {I35}, deduced by evaluators from g.s. to g.s.
212TH2cA |a decay of {+216}U to {+212}Th
216U   P 2240      42 (8+)              0.7 MS    +14-3          8531     26
216U  cP E$from measured E|a value and assuming that both the observed |a
216U 2cP groups from the {+216}U ground state and from this level feed the
216U 3cP ground state of {+212}Th.
216U  cP J$based on known |a transitions in the decays of {+214}Th, {+216}Th
216U 2cP and {+218}U populating an 8+ state of configuration=
216U 3cP |p(h{-9/2}~#f{-7/2}). The deduced energy of 2240 keV is in general
216U 4cP agreement with energies of the 8+ isomers at 2181, 2040, and 2105 keV
216U 5cP in {+216}Th, {+214}Th and {+218}U, respectively (2015Ma37).
216U  cP T$from implant-|a(t) (2015Ma37)
212TH  N                        1.0    AP
212TH cN BR$assumed %|a|?100. Only the |a decay has been observed.  Isomeric
212TH2cN decay is observed in the decay of the (8+) isomers in {+214}Th and
212TH3cN {+216}Th
212TH  L 0.0          0+                31.7 MS   13
212TH cL T$from the Adopted Levels
212TH  A 10582     30100       49E3    33
212TH cA E$From 2015Ma37
212TH cA HF$assumed 100% |a decay from {+216}U isomer to {+212}Th g.s.