ENTRY            C2725   20220301                             C214C2725  0    1 
SUBENT        C2725001   20220301                             C214C2725  1    1 
BIB                 10         25                                 C2725  1    2 
TITLE      Search for 263Rf                                       C2725  1    3 
AUTHOR     (K.R.Czerwinski,K.E.Gregorich,T.M.Hamilton,            C2725  1    4 
           N.J.Hannink, C.D.Kacher,B.A.Kadkhodayan,S.A.Kreck,     C2725  1    5 
           M.R.Lane,D.M.Lee, M.J.Nurmia,A.Turler,D.C.Hoffman)     C2725  1    6 
REFERENCE  (R,LBL-31855,54,1992)                                  C2725  1    7 
INSTITUTE  (1USABRK)                                              C2725  1    8 
FACILITY   (ACCEL,1USABRK)                                        C2725  1    9 
METHOD     (CHSEP) The Rf was separated from the actinides using  C2725  1   10 
           liquid-liquid extractions. The organic phase was 0.5 M C2725  1   11 
           thenoyltrifluoroacetone (TFA) in benzene and the       C2725  1   12 
           aqueous phase was 0.05 M HCl. The collection time for  C2725  1   13 
           each experiment was 3 minutes.                         C2725  1   14 
ANALYSIS   The cross section for the 248Cm(180,3n) reaction was   C2725  1   15 
           calculated using a modified SPIT code. The peak of     C2725  1   16 
           the excitation function is at 92.5 MeV with a cross    C2725  1   17 
           section estimate of 300 pb. From the cross section     C2725  1   18 
           estimate, the 263Rf production rate is about 2         C2725  1   19 
           atoms per hour. Folding in the gas jet transport       C2725  1   20 
           yield, chemical yield and detector efficiencies, the   C2725  1   21 
           detection rate would be 1.3 events per hour for SF     C2725  1   22 
           and 0.7 events per hour for alpha decay.               C2725  1   23 
ERR-ANALYS (DATA-ERR) No details on sources of uncertainties.     C2725  1   24 
DECAY-DATA (104-RF-263,500.0SEC,SF) Measured by authors as (500   C2725  1   25 
           +300/-200 sec).                                        C2725  1   26 
HISTORY    (20220301C) BP                                         C2725  1   27 
ENDBIB              25          0                                 C2725  1   28 
NOCOMMON             0          0                                 C2725  1   29 
ENDSUBENT           28          0                                 C2725  199999 
SUBENT        C2725002   20220301                             C214C2725  2    1 
BIB                  2          2                                 C2725  2    2 
REACTION   (96-CM-248(8-O-18,3N)104-RF-263,,SIG)                  C2725  2    3 
STATUS     (TABLE) page 54.                                       C2725  2    4 
ENDBIB               2          0                                 C2725  2    5 
NOCOMMON             0          0                                 C2725  2    6 
DATA                 3          1                                 C2725  2    7 
EN         DATA       DATA-ERR                                    C2725  2    8 
MEV        PB         PB                                          C2725  2    9 
       92.0      140.0       50.0                                 C2725  2   10 
ENDDATA              3          0                                 C2725  2   11 
ENDSUBENT           10          0                                 C2725  299999 
ENDENTRY             2          0                                 C272599999999