123AG 123AG IT DECAY (393 NS) 2013LA11,2009ST28,2006TOZW21NDS 202105
123AG H TYP=FUL$AUT=Jun Chen$CIT=NDS 174, 1 (2021)$CUT=15-Apr-2021$
123AG c 2013La11: neutron-rich Ag nuclei were produced in two experiments
123AG2c performed at GSI, using the fragmentation of a {+136}Xe beam and
123AG3c the fission of a {+238}U beam, both with E=750 MeV/nucleon from
123AG4c the SIS-18 synchrotron, on Be targets of 1 and 4 g/cm{+2} thickness,
123AG5c respectively. Fragments were analyzed and separated by the GSI
123AG6c Fragment Separator (FRS) and implanted into a copper or plastic
123AG7c stopper. Delayed |g rays were detected with the RISING array
123AG8c consisting of 105 HPGe detectors mounted as 15 clusters. Measured E|g,
123AG9c I|g, |g|g-coin, |g(t). Deduced levels, J, |p, T{-1/2}. Comparisons with
123AGAc shell-model calculations.
123AG c 2009St28 (also 2007To23, 2006ToZW, 2005WaZY): neutron-rich Ag nuclei
123AG2c were produced via fragmentation of E=120 MeV/nucleon {+136}Xe beam from
123AG3c the cyclotron at NSCL on a 188 mg/cm{+2} Be target. Fragments were
123AG4c separated by the A1900 separator and implanted into the NSCL Beta
123AG5c Counting System (BCS) consisting of three Si PIN detectors, a double-
123AG6c sided and six single-sided Si detectors for particle identification. |g
123AG7c rays were detected with 12 segmented Ge detectors from the NSCL SeGA
123AG8c array. Measured E|g, I|g, fragment-|g-coin, |g|g-coin, |g(t). Deduced
123AG9c levels, J, |p, T{-1/2}. Systematics of neighboring Ag isotopes.
123AG c Level scheme, initially proposed by 2006ToZW was revised by 2009St28.
123AG2c Later work by 2013La11 is more in agreement with the results from
123AG3c 2006ToZW than from 2009St28. Data and level scheme in 2013La11 are
123AG4c adopted here
123AG cG E,RI$From 2013La11, unless otherwise noted. Some of the E|g values
123AG2cG given in 2006ToZW are more precise than in 2013La11, but these are in
123AG3cG disagreement with the values in 2009St28 from the same lab. The
123AG4cG energies of all the gamma rays in 2009St28 are systematically higher by
123AG5cG |?2-4 keV than those in 2013La11 and 2006ToZW (also 2007To23) and are
123AG6cG not considered in average
123AG cG E(X)$Weak |g from 2013La11 only
123AG cL E$From a least-squares fit to |g-ray energies
123AG cL J$For excited states, tentative assignment are from 2013La11, based on
123AG2cL systematics and observed decay pattern
123AG cL T$From |g(t) (2013La11)
123AG P 1473.5 5 (17/2-) 393 NS 16
123AG N 0.62 2 0.62 2 1
123AG cN NR$From I|g(all |g from 1426 level+732.7|g from 1474 level)=100
123AG PN 3
123AG G 741.2 5 4.3 7
123AG cG $E|g=738.3 {I4}, I|g=7 {I1}, unplaced in 2009St28
123AG G 1008.2 5 1.7 4 X
123AG G 1133.5 2 5 1
123AG cG E$|g from 2006ToZW, 2007To23 only
123AG L 0.0 (7/2+)
123AG L 26.9 4 (9/2+)
123AG G 27 S
123AG cG E$not observed experimentally in 2013La11
123AG L 656.7 5 (11/2+) 25 NS LT
123AG cL J$(13/2+) suggested by 2009St28, (11/2+) in 2006ToZW
123AG G 629.6 5 33.2 15
123AG cG E$unweighted average of 629.1 {I5} (2013La11) and 630.1 {I1}
123AG2cG (2006ToZW). Other: 632.9 {I1} (2009St28)
123AG cG RI$weighted average of 32.7 {I15} (2013La11), 37 {I4} (2009St28), and
123AG2cG 33 {I3} (2006ToZW)
123AG L 740.8 4 (13/2+) 25 NS LT
123AG G 84 1 10 5 X
123AG G 714.0 2 100
123AG cG E$weighted average of 713.2 {I5} (2013La11) and 714.0 {I1} (2006ToZW).
123AG2cG Other: 716.7 {I2} and 714 with combined I|g=100 {I7} in 2009St28.
123AG3cG Doublet at 713 keV was not confirmed by 2013La11, who place the 713|g
123AG4cG above the 27 level, whereas 2009St28 placed a 714|g as a ground-state
123AG4cG transition, and 717|g from a 1430 level.
123AG cG RI$other: 100 {I4} in 2006ToZW
123AG L 1076.5 3 (9/2-,11/2+)
123AG cL J$(11/2+) suggested by 2009St28 and 2006ToZW
123AG G 335.2 5 3.6 7 X
123AG G 1049.3 5 9.8 15
123AG cG E$others: 1049.3 {I6} (2006ToZW), 1052.1 {I5} (2009St28)
123AG cG RI$weighted average of 9.1 {I9} (2013La11), 17 {I3} (2009St28),
123AG2cG and 11 {I5} (2006ToZW)
123AG G 1076.5 3 19.4 13
123AG cG E$weighted average of 1076.3 {I5} (2013La11) and 1076.6 {I3}
123AG2cG (2006ToZW). Other: 1079.4 {I5} (2009St28)
123AG cG RI$weighted average of 19.5 {I13} (2013La11), 22 {I3}
123AG2cG (2009St28), and 16 {I3} (2006ToZW)
123AG L 1426.2 4 (13/2-)
123AG cL J$(15/2+,13/2-) suggested by 2009St28; (15/2+) in 2006ToZW
123AG G 349.5 2 38.6 21
123AG cG E$weighted average of 348.7 {I5} (2013La11) and 349.5 {I1}
123AG2cG (2006ToZW). Other: 351.4 {I1} (2009St28)
123AG cG RI$unweighted average of 42.8 {I14} (2013La11), 36 {I3}
123AG2cG (2009St28), and 37 {I2} (2006ToZW)
123AG G 685.6 2 83.4 23
123AG cG E$weighted average of 684.7 {I5} (2013La11) and 685.6 {I1}
123AG2cG (2006ToZW). Other: 687.3 {I1} placed from 714 level (2009St28)
123AG cG RI$weighted average of 84.5 {I23} (2013La11), 78 {I6}
123AG2cG (2009St28), and 80 {I7} (2006ToZW)
123AG G 769.3 5 28.5 15
123AG cG E$unweighted average of 768.8 {I5} (2013La11) and 769.8 {I1}
123AG2cG (2006ToZW). Other: 771.6 {I4} (2009St28)
123AG cG RI$weighted average of 29.5 {I15} (2013La11), 31 {I4}
123AG2cG (2009St28), and 26 {I2} (2006ToZW)
123AG L 1473.5 5 (17/2-) 393 NS 16 M1
123AG cL T$from |g(t), weighted average of 393 ns {I16} (2013La11) and
123AG2cL 396 ns {I37} (2009St28). Other: 0.32 |ms {I3} (2006ToZW)
123AG G 48 7.2 2 [E2] 19.9 151 4 S
123AG cG TI$deduced by evaluator from |g+ce intensity balance at 1426 level,
123AG2cG with negligible contributions from internal conversion of |g rays
123AG3cG de-exciting 1426 level
123AG cG RI$|g not observed experimentally, I|g deduced from the intensity
123AG2cG balance at the 1426-keV level, and conversion coefficient=19.9
123AGB G BE2W=6.8 8 (2013La11)
123AG G 732.7 3 10 3 [M2] 0.0068
123AG cG E$weighted average of 732.1 {I5} (2013La11) and 732.9 {I3}
123AG2cG (2006ToZW). Other: 735.1 {I3} unplaced in 2009St28
123AG cG RI$unweighted average of 15.4 {I11} (2013La11), 8 {I2}
123AG2cG (2009St28), and 6 {I3} (2006ToZW)