202RN    206RA A DECAY                 1996LE09,1987HE10,1967VA2224NDS    202406
202RN  H TYP=FUL$AUT=F.G. KONDEV$CIT=NDS 196, 342 (2024)$CUT=1-Sep-2023$
202RN c  1996Le09: {+206}Ra was produced in {+175}Lu({+35}Cl,4n) at 157 MeV and
202RN2c  166 MeV. The {+175}Lu target has a thickness of 320 |mg/cm{+2}. At 157
202RN3c  MeV, the cross section is the highest, 1.7 |mb. {+206}Ra was also
202RN4c  produced in {+171}Yb({+40}Ar,5n) at 204 MeV with 1.7 |mb cross
202RN5c  section. The residues of {+206}Ra were separated by the gas-filled
202RN6c  recoil separator (RITU) and identified on the basis of spatial and
202RN7c  time correlations between the parent ({+206}Ra) and the daughter
202RNxc  ({+202}Rn).
202RN c  1987He10: {+206}Ra was produced in the reactions {+171}Yb({+40}Ar,5n),
202RN2c  {+159}Tb({+51}V,4n) and {+154}Sm({+58}Fe,6n) with thin targets
202RN3c  (200-850 |mg/cm{+2}). The residues were separated by the velocity
202RN4c  filter SHIP, then passed two large-area time-of-flight detectors and
202RN5c  were finally implanted into an array of seven position-sensitive
202RN6c  surface-barrier detectors, where |a decay was registered. The {+206}Ra
202RN7c  were identified by the spatial and time correlations between
202RN8c  the parent ({+206}Ra) and the daughter ({+202}Rn).
202RN c  1967Va22: {+206}Ra was produced via {+197}Au({+19}F,10n) and
202RN2c  {+206}Pb({+12}C,{+12}N). The mass-number assignment of {+206}Ra was
202RN3c  made on the basis of excitation functions. Si(Au) surface-barrier
202RN4c  detectors were used in the measurements. Measured E|a, T{-1/2}(|a).
202RN cA HF$r{-0}({+202}Rn)=1.529 {I4} deduced with HF(7269|a)=1.
202RN cL E,J,T$From adopted levels.
206RA  P 0.0         0+                0.238 S   18             7415      4
206RA cP T$Weighted average of 0.24 s {I2} (1987He10), 0.21 s {I50} (1996Le09)
206RA2cP and 0.260 s {I55} (2021Ni08)
202RN  N                       1.00    AP
202RN  L 0.0         0+                9.7 S     2
202RN  A 7269      4 100          1    AP
202RN cA E$Weighted average of
202RN2cA 7268 keV {I10} (1996Le09,1995Le15), 7270 keV {I10} (1987He10),
202RN3cA 7270 keV {I5} (1967Va22), 7262 keV {I15} (1995Uu01) and
202RN4cA 7263 keV {I20} (1995Le41). Other: 7294 keV {I23} (2021Ni08)