162TA 166RE A DECAY (2.25 S) 1996PA01,1992ME10,1984SC0624NDS 202403
162TA H TYP=FUL$AUT=N. NICA$CIT=NDS 195, 1 (2024)$CUT=19-Sep-2023$
162TA c 1996Pa01: produced as |a decay product of {+170}Ir, which was produced
162TA2c in the {+106}Cd({+70}Ge,3p3n) reaction with E({+70}Ge)=354 MeV. The
162TA3c reaction products were separated in flight using the Daresbury recoil
162TA4c mass separator and were implanted in a double-sided silicon-strip
162TA5c detector (energy resolution|<20 keV). Position and time
162TA6c correlations between the parent and daughter nuclides were
162TA7c determined. E|a and T{-1/2} were reported.
162TA c 1992Me10: {+166}Re was produced in the {+141}Pr({+32}S,7n) reaction,
162TA2c with E({+32}S)=235 MeV. The beam energy was degraded using Ta foils to
162TA3c measure excitation functions from |?175 to |?204 MeV. The reaction
162TA4c products were collected using a He-jet system with a fast
162TA5c tape transport. The samples were counted using a 450-mm{+2}
162TA6c surface-barrier |a detector mounted between a |gX and a 70% |g
162TA7c detector. Reported T{-1/2}, E|a, E|g, I|g.
162TA c 1984Sc06: {+166}Re produced in the {+144}Sm({+27}Al,5n) reaction, with
162TA2c E({+27}Al) between 130 and 155 MeV. Recoil nuclei were collected and
162TA3c transported using a He-jet and a fast tape-transport system. |a's were
162TA4c studied with a 300 mm{+2}|*100 |mm-thick Si surface-barrier detector.
162TA5c Reported T{-1/2} and E|a.
162TA c 1982De11: produced by {+63}Cu bombardment of enriched targets of
162TA2c {+107}Ag, {+109}Ag, {+108}Cd, {+110}Cd, {+113}In, {+112}Sn and
162TA3c {+116}Sn. Beam energy was degraded using Ni foils to a range from 245
162TA4c to 300 MeV. The reaction products were transported using a He-jet,
162TA5c fast-transport system. |a's were measured using a Si surface-barrier
162TAxc detector. Measured E|a.
162TA c 1978Sc26: {+166}Re produced in the {+93}Nb({+84}Kr,|a7n) and
162TA2c {+89}Y({+84}Kr,7n) reactions, with E({+84}Kr)=5.6 MeV/u and
162TA3c E({+86}Kr)=7.03 MeV/u. The beam energies were reduced using Ti
162TA4c degrader foils. The reaction products were transported using a He-jet
162TA5c transport system. The activities were counted using three Si
162TA6c surface-barrier detectors, one in a multiscaling mode. Reported
162TAxc T{-1/2} and E|a.
162TA c 1984Sc06 suggest that the assignment of an |a activity having E|a=5495
162TA2c {I10} to {+166}Re by 1978Sc26 is incorrect, reporting instead E|a=5372
162TA3c {I10}. This calls into question the assignment of the |a activity to
162TA4c {+166}Re as reported by 1982De11, since 1984Sc06 suggest that they may
162TA5c have based their assignment on that of 1978Sc26. However, subsequent
162TA6c studies, especially 1996Pa01, have shown that the E|a value to be
162TA7c associated with the {+166}Re decay is not as low as 5372 keV but is
162TA8c greater than 5500 keV, thus invalidating the assignment by 1984Sc06.
162TA9c Note also, however, that 1996Pa01 report that E|a=5518 {I5} for the
162TAKc {+165}Re decay. Thus, |a energy alone is not sufficient to provide a
162TASc unique mass assignment from the earlier studies; and the T{-1/2}
162TANc values for {+166}Re and {+165}Re are quite similar. The possibility
162TAJc thus exists that the T{-1/2} and E|a values from these earlier studies
162TAFc (1978Sc26,1982De11) may have been affected by the presence of {+165}Re
162TALc in the samples. Here, however, we have included the data from these
162TAxc studies as reported.
162TA cA HF$The nuclear radius parameter r{-0}({+162}Ta)=1.553 {I13}
162TA2cA is deduced from interpolation (or unweighted average) of radius
162TA3cA parameters of the adjacent even-even nuclides.
166RE P 0.0 2.25 S 21 5520 60
166RE cP J$(7+) in 2021Ko07, as proposed by 1992Me10, but no assignment is
166RE2cP recommended in {+166}Re Adopted Levels in the ENSDF database, although,
166RE3cP (7+) is discussed
166RE cP T$From {+166}Re Adopted Levels in ENSDF database (2008Ba14 evaluation)
166RE cP QP$From 2021Wa16
162TA N 0.24 LT
162TA cN BR$The |a branching ratio has not been directly measured. From
162TA2cN comparison of their excitation-function data for the various
162TA3cN nuclides they studied, 1978Sc26 estimate that %|a for {+166}Re lies
162TA4cN between 30 and 100. In {+166}Re Adopted Levels in ENSDF database
162TA5cN (2008Ba14 evaluation), an upper limit of 24% is given
162TA L 0+X
162TA cL E$energy of level populated by |a is not known.
162TA A 5522 7 100 0.15 GT
162TA cA E$weighted average of: 5495 {I10} (1978Sc26); 5527 {I4}
162TA2cA (1982De11); 5501 {I13} (1992Me10); and 5533 {I10} (1996Pa01).
162TA cA IA$only one |a group is reported