ENTRY C2298 20180511 C175C229800000001 SUBENT C2298001 20180511 C175C229800100001 BIB 9 20 C229800100002 TITLE New Isotope Einsteinium-248 C229800100003 AUTHOR (A.Chetham-Strode,L.W.Holm) C229800100004 REFERENCE (J,PR,104,1314,1956) C229800100005 #doi:10.1103/PhysRev.104.1314 C229800100006 INSTITUTE (1USABRK,1USAUCX) C229800100007 FACILITY (CYCLO,1USABRK) 60-inch cyclotron of the Crocker C229800100008 Laboratory. C229800100009 SAMPLE The target used for this work contained about 10**13 C229800100010 atoms of monoisotopic Cf249 in addition to about C229800100011 2x10**13 atoms of its parent Bk249. C229800100012 METHOD (CHSEP,REC,ACTIV) Immediately after bombardment, the C229800100013 californium and einsteinium reaction products were C229800100014 separated by ion-exchange methods and C229800100015 electrodeposited on platinum foil for examination by C229800100016 alpha pulse-height analysis. C229800100017 ANALYSIS The approximate cross sections were calculated from C229800100018 the observed alpha-disintegration rates and branching C229800100019 ratios, assuming recoil collection yields of 100% in C229800100020 the bombardments. C229800100021 HISTORY (20180511C) BP C229800100022 ENDBIB 20 0 C229800100023 NOCOMMON 0 0 C229800100024 ENDSUBENT 23 0 C229800199999 SUBENT C2298002 20180511 C175C229800200001 BIB 3 3 C229800200002 REACTION (98-CF-249(D,2N)99-ES-249,,SIG) C229800200003 DECAY-DATA (99-ES-249,2.0HR,A,6.76) C229800200004 STATUS (CURVE) Fig. 1, page 1314. C229800200005 ENDBIB 3 0 C229800200006 NOCOMMON 0 0 C229800200007 DATA 2 5 C229800200008 EN DATA C229800200009 MEV MB C229800200010 15.773 6.091E+01 C229800200011 17.730 3.889E+01 C229800200012 17.775 4.248E+01 C229800200013 22.025 4.159E+01 C229800200014 22.026 3.513E+01 C229800200015 ENDDATA 7 0 C229800200016 ENDSUBENT 15 0 C229800299999 SUBENT C2298003 20180511 C175C229800300001 BIB 3 3 C229800300002 REACTION (98-CF-249(D,3N)99-ES-248,,SIG) C229800300003 DECAY-DATA (99-ES-248,25.0MIN,A,6.87) C229800300004 STATUS (CURVE) Fig. 1, page 1314. C229800300005 ENDBIB 3 0 C229800300006 NOCOMMON 0 0 C229800300007 DATA 2 5 C229800300008 EN DATA C229800300009 MEV MB C229800300010 15.792 1.953E+00 C229800300011 17.811 3.905E+00 C229800300012 17.832 5.173E+00 C229800300013 21.990 6.873E+00 C229800300014 22.014 5.488E+00 C229800300015 ENDDATA 7 0 C229800300016 ENDSUBENT 15 0 C229800399999 ENDENTRY 3 0 C229899999999