184PB    188PO A DECAY                 2003VA16,1999AN52         10NDS    201002
184PB  H TYP=FUL$AUT=CORAL M. BAGLIN$CIT=NDS 111,275 (2010)$CUT=1-Oct-2009$
184PB C  2003VA16: 188PO SOURCES FROM 142ND(50CR,4N), E=5.04 MEV/NUCLEON
184PB2C  (MID-TARGET); 99.8% 142ND TARGET; RECOILS SEPARATED BY VELOCITY
184PB3C  FILTER ^SHIP AND IMPLANTED INTO 16-STRIP POSITION-SENSITIVE SI
184PB4C  DETECTOR; SIX SI DETECTORS (FOR ce) AND FOUR-FOLD SEGMENTED Clover
184PB5C  DETECTOR; MEASURED EG, EA, IA, |a-G COIN, PARENT ^T{-1/2}.
184PB6C  SUPERSEDES 2002VAZZ.
184PB C  1999AN52: SOURCE FROM 142ND(52CR,6N), E=288, 294 MEV; MEASURED
184PB2C  EA, IA, |a-ce COIN, ^T{-1/2}(184PB), RECOIL-|a-|a CORRELATIONS.
184PB C  2002VAZZ: 188PO FROM 142ND(50CR,4N); MEASURED EA, ^T{-1/2}(184PB).
184PB C  PARENT ^T{-1/2}=0.28 MS 3 (2003VA16; SUPERSEDES 0.30 MS 5 FROM
184PB2C  2002VAZZ); OTHER VALUES: 0.40 MS +20-15
184PB3C  AND 0.20 MS +27-8 (1999AN52).  PARENT QA=8082 13 FROM
184PB4C  MEASURED EA=7910 13 FOR GS TO GS TRANSITION. %A(188PO) AP 100
184PB5C  (ONLY |a DECAY OBSERVED; SEE ALSO COMMENT ON |a BRANCHING).
184PB CA IA        FROM 2003VA16.
184PB CA HF        R0=1.486 10 IF HF=1 FOR 7911A TO GS AND %A AP 100 FOR 188PO.
184PB2CA HOWEVER, HF TO 577 LEVEL IS THEN VERY MUCH LESS THAN 1.0; HF GE 1
184PB3CA IMPLIES IA LE 2% TO 577 LEVEL, VERY DIFFERENT FROM MEASURED IA=35% 20.
184PB4CA ALSO, R0 IS A LITTLE LOWER THAN EXPECTED FROM SYSTEMATICS
184PB5CA (R0(190PB)=1.511 6, R0(188PB)=1.511 6 (1998AK04): R0(186PB)=1.510 2
184PB6CA (2003BA44)).  IT SHOULD BE NOTED THAT, FROM
184PB6CA SYSTEMATICS FOR even-^A PB ISOTOPES, THREE LOW-LYING 0+
184PB7CA STATES ARE EXPECTED IN 184PB AND THEIR STRUCTURES
184PB8CA MAY BE STRONGLY INTERMIXED; ALSO, THE UPPER TWO STATES MAY HAVE
184PB9CA COMPARABLE ENERGIES, IN WHICH CASE ALPHAS FEEDING THEM MAY NOT HAVE
184PBACA BEEN RESOLVED IN THE EXPERIMENTS OF 1999AN52 AND 2003VA16.
184PB CL J         FROM Adopted Levels.
188PO  P 0            0+               0.28 MS   5              8082      13
184PB  N                        1.0    AP
184PB CN BR        COMPARISON OF MEASURED ^T{-1/2} WITH CALCULATED
184PB2CN |b PARTIAL ^T{-1/2} OF 1.0 S (1997Mo25) OR AP 0.8 S
184PB3CN (1973TA30) IMPLIES NEGLIGIBLE EC+B+ BRANCH.
184PB  L 0.0          0+
184PB  A 7911      13 80      4 1.0
184PB CA E         WEIGHTED AVERAGE OF 7915 25 (1999AN52) AND 7910 15
184PB2CA (2003VA16). CORRELATED WITH EA=6618 20 ALPHAS FROM THE 184PB DAUGHTER
184PB3CA AND WITH EA=6120 20 ALPHAS FROM THE 180HG GRANDDAUGHTER (1999AN52).
184PB CA           OTHER IA: 65 20 (1999AN52).
184PB  L 570       30 (0+)
184PB CL E         FROM DIFFERENCE IN EA FOR ALPHAS FEEDING THIS LEVEL
184PB2CL AND THOSE FEEDING THE GROUND STATE.
184PB CL           VERY TENTATIVELY ASSOCIATED WITH 0+ PROLATE STRUCTURES KNOWN
184PB2CL IN 186PB AND 188PB (1999AN52); HOWEVER, A 0+ OBLATE STATE IS ALSO
184PB3CL EXPECTED (BASED ON SYSTEMATICS) AT COMPARABLE ENERGY, AND THE
184PB4CL PROXIMITY OF THESE STATES MAY RESULT IN HIGHLY MIXED CONFIGURATIONS.
184PB  A 7353      27 20      4 0.077  23
184PB CA E         WEIGHTED AVERAGE OF 7355 35 (2003VA16) AND 7350 40
184PB2CA (1999AN52). CORRELATED WITH EA=6620 20 (1999AN52), EA=6606 20
184PB2CA (2003VA16) FROM 184PB DECAY.
184PB CA           OTHER IA: 35 20 (1999AN52).
184PB  G  570                   (E0)
184PB CG E         FROM LEVEL ENERGY DIFFERENCE.
184PB CG M         CONVERSION ELECTRONS ONLY ARE OBSERVED IN COINCIDENCE WITH
184PB2CG 7350A (1999AN52).