ENTRY C2298 20241031 C243C229800000001 SUBENT C2298001 20241031 C243C229800100001 BIB 9 21 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 (20241028A) OS. DECAY-DATA corrected C229800100023 ENDBIB 21 0 C229800100024 NOCOMMON 0 0 C229800100025 ENDSUBENT 24 0 C229800199999 SUBENT C2298002 20241031 C243C229800200001 BIB 4 4 C229800200002 REACTION (98-CF-249(D,2N)99-ES-249,,SIG) C229800200003 DECAY-DATA (99-ES-249,2.0HR,A,6760.) C229800200004 STATUS (CURVE,,A.Chetham-Strode+,J,PR,104,1314,1956) Fig.1. C229800200005 HISTORY (20241028A) DECAY-DATA: Energy corrected C229800200006 ENDBIB 4 0 C229800200007 NOCOMMON 0 0 C229800200008 DATA 2 5 C229800200009 EN DATA C229800200010 MEV MB C229800200011 15.773 6.091E+01 C229800200012 17.730 3.889E+01 C229800200013 17.775 4.248E+01 C229800200014 22.025 4.159E+01 C229800200015 22.026 3.513E+01 C229800200016 ENDDATA 7 0 C229800200017 ENDSUBENT 16 0 C229800299999 SUBENT C2298003 20241031 C243C229800300001 BIB 4 4 C229800300002 REACTION (98-CF-249(D,3N)99-ES-248,,SIG) C229800300003 DECAY-DATA (99-ES-248,25.0MIN,A,6870.) C229800300004 HISTORY (20241028A) DECAY-DATA: Energy corrected C229800300005 STATUS (CURVE,,A.Chetham-Strode+,J,PR,104,1314,1956) Fig.1. C229800300006 ENDBIB 4 0 C229800300007 NOCOMMON 0 0 C229800300008 DATA 2 5 C229800300009 EN DATA C229800300010 MEV MB C229800300011 15.792 1.953E+00 C229800300012 17.811 3.905E+00 C229800300013 17.832 5.173E+00 C229800300014 21.990 6.873E+00 C229800300015 22.014 5.488E+00 C229800300016 ENDDATA 7 0 C229800300017 ENDSUBENT 16 0 C229800399999 ENDENTRY 3 0 C229899999999