223TH 227U A DECAY 1991HO05 01NDS 200110
223TH H TYP=FUL$AUT=E. BROWNE$CIT=NDS 93, 846 (2001)$CUT=1-May-2001$
223TH D CALCULATED NEW ALPHA HINDRANCE FACTORS. VALUES DIFFER FROM
223TH2D THOSE GIVEN BY 1991HO05. E. BROWNE. FEBRUARY 2000.
223TH c {+227}U activity was produced by {+208}Pb({+22}Ne,3n), E=110 Mev, and
223TH2C identified by Th XK and by the expected reaction cross section.
223TH4C Others: 231PA(P,5N), E=34-54 MEV, activity identified by excitation
223TH5C functions (1969HA32); 232TH(A,9N), E=150 MEV, activity identified by
223TH6C chemical separation of U, reaction yields, and systematics of
223TH7C ALPHA-particle energies (1952ME13).
223TH8C Measured EG, RI, AG coin, ACE coin, EA, IA. Deduced G-ray
223TH9C multipolarities. Detectors: high-purity germanium, SI(LI),
223THAC surface barrier SI.
223TH CL E Deduced by evaluator from G-ray energies using 1-KEV
223TH2CL uncertainties for values reported by 1991HO05.
223TH CL J$Spin and parity assignments are based on G-ray multipolarities,
223TH2CL and on the similarity of the level structure, G-ray decay pattern, and
223TH3CL relative ALPHA-decay hindrance factors in the isotone 221RA.
223TH CA HF$Using R0(223TH)=1.523, average of R0(222TH)=1.522 22 and
223TH2CA R0(224TH)=1.524 9 (1998AK04). 1991HO05 used R0=1.552, therefore
223TH3CA their hindrance factors differ from those presented here.
227U P 0.0 (3/2+) 1.1 M 1 7211 14
223TH N 0.20 3 1.0
223TH PN 3
223TH CN NR$from SUMOF TI (GS + 51 level)=80% 10,
223TH2CN with IA(GS + 51 level) AP 20%.
223TH L 0.0 (5/2)+ 0.60 S 2
223TH L 51.3 5 (7/2)+
223TH A 7060 60 20 AP
223TH CA E deduced by evaluator from EA=6905 KEV 60 to 209 level.
223TH CA IA includes intensity to g.s.
223TH G 51.3 5 M1+E2 0.214 10 39.2 10
223THS G LC= 29.2 7$MC= 7.32 18$NC+= 2.69 7
223TH CG E,M,MR from adopted gammas.
223TH L 209 1 (7/2)+
223TH A 6905 60 14 3 3.2
223TH CA IA IA=18 5, from G-ray transition intensity balance.
223TH G 158 14 5M1+E2 1.3 +7-4 3.0 4
223THS G KC= 1.7 5$LC= 0.96 11$MC= 0.25 3$NC+= 0.093 4
223TH CG M,MR from EKC=1.72 66.
223TH G 209 14 5M1+E2 1.3 +14-5 1.27 25
223THS G KC= 0.82 24$LC= 0.33 5$MC= 0.086 11$NC+= 0.0316 8
223TH CG M,MR from EKC=0.80 44. ELC=0.69 28.
223TH L 247 1 (3/2)+
223TH A 6860 30 50 6 0.64
223TH CA E other values: 6870 KEV 20, semi (1969HA32); 6800 KEV 100,
223TH2CA ion chamber (1952ME13).
223TH CA IA IA=51 7, from G-ray transition intensity balance.
223TH G 247 10013M1 1.53
223THS G KC= 1.22 $LC= 0.231 $MC= 0.0555 $NC+= 0.0202
223TH CG M from EKC=1.24 28, ELC=0.297 74, EMC=0.074 28.
223TH L 310 1 (5/2)+
223TH A 6740 50 16 4 1.1
223TH CA IA IA=14 4, from G-ray transition intensity balance.
223TH G 259 15 6(M1) 1.34
223THS G KC= 1.07 $LC= 0.202 $MC= 0.0487 $NC+= 0.0177
223TH CG M from EKC=1.58 75. ELC=0.46 28.
223TH G 310 18 6M1 0.815
223THS G KC= 0.652 $LC= 0.123 $MC= 0.0295 $NC+= 0.0107
223TH CG M from EKC=0.65 24, ELC=0.092 46.