ENTRY C0958 20170519 C167C095800000001 SUBENT C0958001 20170519 C167C095800100001 BIB 12 37 C095800100002 TITLE Comparison of complementary reactions in the C095800100003 production of Mt C095800100004 AUTHOR (S.L.Nelson,K.E.Gregorich,I.Dragojevic,J.Dvorak, C095800100005 P.A.Ellison,M.A.Garcia,J.M.Gates,L.Stavsetra,M.N.Ali, C095800100006 H.Nitsche) C095800100007 REFERENCE (J,PR/C,79,027605,2009) C095800100008 #doi:10.1103/PhysRevC.79.027605 C095800100009 REL-REF (A,,S.Hofmann+,J,ZP/A,358,377,1997) Comparable results C095800100010 of the most recent study by the GSI. C095800100011 INSTITUTE (1USABRK,1USAUCX) C095800100012 FACILITY (CYCLO,1USABRK) LBNL 88-Inch Cyclotron using the C095800100013 Berkeley Gas-filled Separator (BGS). C095800100014 SAMPLE The target wheel consisted of nine arc-shaped targets C095800100015 with a nominal areal density of ~460 microg/cm2 208Pb C095800100016 metal on 35 microg/cm2 natC. A thin <10 microg/cm2 C095800100017 layer of natC was applied to the downstream side of C095800100018 the targets to improve infrared cooling and prevent C095800100019 target material loss. The target wheel rotation speed C095800100020 was 5-10 Hz. C095800100021 DETECTOR (MWPC,SISD) The detection system used consists of a C095800100022 multiwire proportional counter upstream of the FPD. C095800100023 The FPD is constructed with a five-sided box geometry C095800100024 from 58 mm x 58 mm 300 microm-thick Si-strip detector C095800100025 cards, each with 16 strips. The focal plane of the C095800100026 BGS is made of three cards totaling 48 strips. C095800100027 METHOD (ASPEC,REC) The BGS separates out evaporation residues C095800100028 (EVRs) from unreacted beam and undesirable reaction C095800100029 products by their differing magnetic rigidities in C095800100030 dilute He gas. Cross sections were deduced from the C095800100031 count of alpha-decay chains. Of the five alpha decays C095800100032 of 266Mt observed in these experiments, only two C095800100033 registered a full-energy signal in the FPD. C095800100034 ERR-ANALYS (DATA-ERR) Cross section errors values are at the 68% C095800100035 confidence interval. C095800100036 HISTORY (20170519C) BP C095800100037 DECAY-DATA (109-MT-266,3.3MSEC,A) Measured by authors C095800100038 +2.5/-1.0 msec C095800100039 ENDBIB 37 0 C095800100040 NOCOMMON 0 0 C095800100041 ENDSUBENT 40 0 C095800199999 SUBENT C0958002 20170519 C167C095800200001 BIB 2 2 C095800200002 REACTION (82-PB-208(27-CO-59,N)109-MT-266,,SIG) C095800200003 STATUS (TABLE) Table I, page 027605-2. C095800200004 ENDBIB 2 0 C095800200005 NOCOMMON 0 0 C095800200006 DATA 4 1 C095800200007 EN DATA +DATA-ERR -DATA-ERR C095800200008 MEV PB PB PB C095800200009 291.5 7.7 5.2 3.3 C095800200010 ENDDATA 3 0 C095800200011 ENDSUBENT 10 0 C095800299999 ENDENTRY 2 0 C095899999999