213RN    217RA A DECAY                 1970TO07,1970VA13,2019MI0822NDS    202203
213RN  H TYP=FUL$AUT=M. S. Basunia$CIT=NDS 181, 475 (2022)$CUT=1-Jan-2022$
213RN c  Others: 2021Hu19, 1990An19, 1990AnZU
213RN c  1970To07: {+221}Th was produced from {+208}Pb({+16}O,3n), E=10.6
213RN2c  MeV/nucleon, 99% enriched {+208}Pb target, alpha spectra were obtained
213RN3c  on-line using the helium-jet recoil transport method for {+221}Th decay
213RN4c  chain, Si(Au) detector. Measured E|a, T{-1/2}; deduced Q|a. FWHM = 25
213RN5c  keV.
213RN c  1970Va13: {+221}Th was produced bombarding different targets with
213RN2c  different projectiles, measured E|a of the {+221}Th decay chain. Deduce
213RN3c  t, Q.
213RN c  2019Mi08: Studied {+225}U |a decay chain, produced by the fusion
213RN2c  evaporation reactions of E=212, 217, and 226 MeV (mid-target) {+48}Ca
213RN3c  beams on a |?530 |mg/cm{+2} {+181}Ta target sandwiched between carbon
213RN4c  layers of 50 |mg/cm{+2} upstream and 10 |mg/cm{+2} downstream.
213RN5c  Evaporation residues (ERs) were separated by the SHIP velocity filter
213RN6c  and implanted into the COMPAct Spectroscopy Set-up (COMPASS),
213RN7c  consisting of a Double sided Silicon Strip Detector (DSSD), surrounded
213RN8c  by 4 Single sided Silicon Strip Detectors (SSSDs). Measured energy and
213RN9c  time spectra of correlations between ER and |a particles from
213RNac  subsequent decays. Deduced halflife.
213RN cA           2019Mi08 reported two E|a of values 8990 keV {I40} (8.99 MeV
213RN2cA {I4}) and 8910 keV {I40} (8.91 MeV {I4}). 8990|a is in good agreement
213RN3cA with the literature value for the {+217}Ra g.s. to {+213}Rn g.s. decay.
213RN4cA The other 8910|a, if considered to decay from {+217}Ra g.s., it would
213RN5cA feed an excited level at about 84 keV {I41} (deduced from Q|a({+221}Ra)
213RN6cA and E|a). 2019Mi08 did not propose any depopulation or feeding level
213RN7cA for this E|a, and no known excited levels in {+217}Ra or {+213}Rn are
213RN8cA matching for the decay of this E|a.
213RN cA HF        Using r{-0}({+213}Rn)=1.5526 {I27}, extrapolated value based
213RN2cA on r{-0}({+212}Rn)=1.5433 {I36} and r{-0}({+214}Rn)=1.5655 {I13}
213RN3cA (2020Si16).
217RA  P 0.0          (9/2+)           1.6 US    2              9161      6
217RA cP J$From 2018Ko01 (A=217 evaluation)
217RA cP T$from 8995|a(t) (1970Va13 - good statistics). Others: 1.7 |ms {I3}
217RA2cP (1990An19 - appears to supersede their earlier value 1.7 us {I1}
217RA3cP (1990AnZU)), 1.4 |ms {I+4-3} (2019Ya04), 4 |ms {I2} (1970To07), and
217RA4cP 2.5 |ms {I2} (2019Mi08 - from time correlations between {+221}Th and
217RA5cP {+217}Ra |a decays). Weighted average of all the data, without 2.5 |ms
217RA6cP {I2} (2019Mi08) yields the same value.
217RA cP QP$From 2021Wa16
213RN  N                        1.0
213RN  L 0.0         (9/2+)            19.4 MS   2
213RN cL J,T       From Adopted Levels.
213RN  A 8992      8  100      1.69    22
213RN cA E         Weighted average of 8990 {I8} (1970To07, semi), 8995 {I10}
213RN2cA (1970Va13, semi), 8990 {I40} (2019Mi08 - 8.99 MeV {I4}), and 8988 {I26}
213RN3cA (2019Ya04). Uncertainty is the lowest input value. Other: 8966 {I15}
213RN4cA (2021Hu19).