74KR 74RB EC DECAY (64.776 MS) 2003PI08 06NDS 200607
74KR H TYP=FUL$AUT=BALRAJ SINGH, AMEENAH R. FARHAN$CIT=NDS 107, 1923 (2006)$
74KR2 H CUT=30-Apr-2006$
74KR c 2003Pi08 (also 2002Zg01): {+74}Rb produced in Nb(p,X) E={ 500 MeV}
74KR2c spallation reaction.
74KR2c The nuclei were ionized in a surface ionization source and mass
74KR3c separated in the ISAC on-line separator. At the experimental
74KR4c site, the {+74}Rb activity was implanted into a moving conducting
74KR5c collector tape.
74KR6c Measured E|g, I|g, |g|g, ce, (ce)|b coin using two Si(Li) diodes
74KR7c an HPGe detector in conjunction with two plastic scintillators for
74KR8c for |b detection.
74KR c T{-1/2} measurement: 2002Oi02, 2001Oi04, 2001Ba12, 2001Ga24, 1999Lo07,
74KR2c 1998Lo17, 1977Da04
74KR c Survey and analysis of superallowed (0+ to 0+) |b decays including
74KR2c that of {+74}Rb to {+74}Kr: 2005Ha27 (also 2005Ha65,2006Ha12),
74KR3c 2005Sa44
74KR cE TI,LOGFT$Deduced from |g intensities of 2003Pi08.
74KR cE TI(A)$Apparent feeding deduced from |g intensities. This
74KR2cE feeding is likely to be due to unobserved |g rays from
74KR3cE high-lying J=1,0 states. From |DJ=2, d(|p)=no; no direct |b feeding
74KR4cE is expected.
74KR CG RI$ FROM TI IN 2003PI08 AND CC FOR EXPECTED MULT
74KR CG M$ FROM 'ADOPTED GAMMAS'
74KR CL J$ FROM 'ADOPTED LEVELS'
74RB P 0.0 0+ 64.776 MS 30 10416.8 45
74RB cP T$ from weighted average of 64.761 ms {I31} (2001Ba12,includes
74RB2cP systematic uncertainty of 0.015 ms added in quadrature), 64.90 ms {I9}
74RB3cP (2002Oi02,2001Oi04), 64.77 ms {I17} (2001Oi04, with gating at
74RB4cP E{-|b}>5.2 MeV), 72 ms {I18} (2001Ga24), 60 ms {I10} (1999Lo07),
74RB5cP 64 ms {I10} (1998Lo17), 64.9 ms {I5} (1977Da04).
74RB CP QP$ FROM MASS MEASUREMENT (2004KE10). Other: 10414 4 (2003AU03)
74KR N 1 1 1 1
74KR PN 3
74KR L 0 0+
74KR E 99.32 10 0.1766 18 3.4899 11 99.50 10
74KRS E EAV=4469.5 23$CK=0.0015583 2$CL=0.0001795 3$CM+=3.683E-5 6
74KR CE $ SUPERALLOWED B DECAY (SEE 2005HA27 FOR DETAILED ANALYSIS)
74KR cE TI$Total observed non-superallowed feeding is { 0.336 {I20}} per 100
74KR2cE decays of {+74}Rb; unobserved non-superallowed feeding is estimated
74KR3cE (from comparison of data with shell-model calculations) as
74KR4cE { 0.15 {I10}} per 100 decays of {+74}Rb (2003Pi08)
74KR L 456 1 2+
74KR E 0.138 18 0.000284 6.25 6 0.138 18A ?
74KRS E EAV=4244.1 23$CK=0.001804 3$CL=0.0002079 4$CM+=4.265E-5 7
74KR G 456 1 0.250 14 E2 0.250 14
74KR L 509 1 0+
74KR E 0.043 11 9.0E-5 23 6.74 12 0.043 11
74KRS E EAV=4218.0 23$CK=0.001836 3$CL=0.0002116 4$CM+=4.341E-5 7
74KR G 53 1 0.0038 8 [E2] 10.2 0.032 7
74KR G 509 1 E0 0.048 5
74KR L 1204 1 (2+)
74KR E 0.053 16 0.000144 6.48 14 0.053 16A ?
74KRS E EAV=3875.2 23$CK=0.002334 4$CL=0.0002689 5$CM+=5.518E-5 10
74KR G 695 1 0.008 5 E2 0.008 5
74KR G 748 1 0.019 5 0.019 5
74KR G 1204 0.026 14 E2 0.026 14 S
74KR cG RI$ |g not observed directly since it coincides with
74KR2cG with strong |g from {+74}Ga decay; the intensity here
74KR3cG is inferred from known branching ratio I|g(1204)/I|g(748)
74KR L 1654 1 (0+) ?
74KR E 0.052 5 0.000162 6.37 5 0.052 5
74KRS E EAV=3653.6 23$CK=0.002756 5$CL=0.0003176 6$CM+=6.517E-5 12
74KR G 1198 1 0.052 5 0.052 5
74KR L 1742 1 (2+)
74KR E 0.038 7 0.000122 6.49 8 0.038 7 A ?
74KRS E EAV=3610.3 23$CK=0.002850 5$CL=0.0003285 6$CM+=6.740E-5 12
74KR G 1233 1 0.029 4 0.029 4
74KR G 1286 1 0.009 5 0.009 5
74KR L 4244 1 (1+) ?
74KR E 0.012 2 0.000122 6.19 8 0.012 2
74KRS E EAV=2387.0 23$CK=0.009109 24$CL=0.001051 3$CM+=0.0002157 6
74KR G 4244 1 0.012 2 0.012 2