ENTRY O2042 20120918 O049O204200000001 SUBENT O2042001 20120918 O049O204200100001 BIB 11 31 O204200100002 TITLE Excitation energy of the spontaneously fissioning O204200100003 isomeric state in Am-240. O204200100004 AUTHOR (S.Bjoernholm,J.Borggreen,L.Westgaard,V.A.Karnaukhov) O204200100005 INSTITUTE (2DENCOP) O204200100006 REFERENCE (J,NP/A,95,513,1967) O204200100007 REL-REF (M,O2041001,D.S.Brenner+,J,NP,89,267,1966) O204200100008 FACILITY (VDGT,2DENNBI) O204200100009 METHOD (PHD) O204200100010 DETECTOR (SIBAR) for prompt fission O204200100011 (GLASD) O204200100012 (PROPC) for delayed fission O204200100013 PART-DET (FF) O204200100014 SAMPLE Pu-240, Pu-241, Pu-242 targets were used. The targets O204200100015 were prepared by the molecular plating method. The O204200100016 targets material was placed onto 200 mug/cm**2 Ni foilsO204200100017 with supporting Cu backing. Target thicknesses were in O204200100018 most cases determinate from the alpha-counting, using O204200100019 a surface -barrier silicon detector. The O204200100020 electrodeposited targets were typically of thickness O204200100021 100-400 mug/cm**2. O204200100022 The isotopic composition of the target material, based O204200100023 on the specification of the supplier, AERE, Harwell O204200100024 and in parentheses( performed in Belgium), O204200100025 corrected for decay of Pu-241 into Am-241 is given. O204200100026 Pu-240-98.0(98.9)%, Pu-239 1.91(0.95%),Pu-241+Am-241 O204200100027 0.074(0.060)%, Pu-242 0.019(0.051)%, O204200100028 Pu-241-78.8+16.1(normalized to 78.8%),Pu-239 1.5(1.6)%,O204200100029 Pu-240 3.09(3.14)%, Pu-242 0.49(0.50)%, O204200100030 Pu-242-90.88(92.13), Pu-239 3.13(3.03)%, Pu-240 2.90 O204200100031 (2.29)%, Pu-241+Am-241 3.09(2.54)% O204200100032 HISTORY (20120918C) SB O204200100033 ENDBIB 31 0 O204200100034 NOCOMMON 0 0 O204200100035 ENDSUBENT 34 0 O204200199999 SUBENT O2042002 20120918 O049O204200200001 BIB 4 7 O204200200002 REACTION 1(94-PU-242(D,F),,SIG) O204200200003 2(94-PU-242(D,2N)95-AM-242-L,,SIG) O204200200004 DECAY-DATA2(95-AM-242-L,14.MSEC) O204200200005 STATUS (TABLE).Table 2 of J,NP/A,95,513,1967 O204200200006 ERR-ANALYS (DATA-ERR).The relative uncertainty is given in table. O204200200007 Total uncertainty in the all cross section O204200200008 determinations is estimated to be +-30%. O204200200009 ENDBIB 7 0 O204200200010 NOCOMMON 0 0 O204200200011 DATA 4 1 O204200200012 EN DATA 1DATA 2DATA-ERR 2 O204200200013 MEV MB MICRO-B MICRO-B O204200200014 12.1 170. 7.6 2.0 O204200200015 ENDDATA 3 0 O204200200016 ENDSUBENT 15 0 O204200299999 SUBENT O2042003 20120918 O049O204200300001 BIB 4 7 O204200300002 REACTION 1(94-PU-240(D,F),,SIG) O204200300003 2(94-PU-240(D,2N)95-AM-240-L,,SIG) O204200300004 DECAY-DATA2(95-AM-240-L,0.9MSEC) O204200300005 STATUS (TABLE).Table 2 of J,NP/A,95,513,1967 O204200300006 ERR-ANALYS (DATA-ERR).The relative uncertainty is given in table. O204200300007 Total uncertainty in the all cross section O204200300008 determinations is estimated to be +-30%. O204200300009 ENDBIB 7 0 O204200300010 NOCOMMON 0 0 O204200300011 DATA 4 1 O204200300012 EN DATA 1DATA 2DATA-ERR 2 O204200300013 MEV MB MICRO-B MICRO-B O204200300014 12.1 215. 3.6 1.5 O204200300015 ENDDATA 3 0 O204200300016 ENDSUBENT 15 0 O204200399999 SUBENT O2042004 20120918 O049O204200400001 BIB 5 11 O204200400002 REACTION 1(94-PU-241(P,F),,SIG) O204200400003 2(94-PU-241(P,2N)95-AM-240-L,,SIG) O204200400004 DECAY-DATA2(95-AM-240-L,0.9MSEC) O204200400005 STATUS (TABLE).Table 2 of J,NP/A,95,513,1967 O204200400006 FLAG (1.).Corrected for a 20% flat background observed in O204200400007 the decay curves and for the contribution from the O204200400008 Pu-240(p,n)Am-240 reaction, due to the Pu-240 contents O204200400009 of the Pu-241 targets. O204200400010 ERR-ANALYS (DATA-ERR).The relative uncertainty is given in table. O204200400011 Total uncertainty in the all cross section O204200400012 determinations is estimated to be +-30%. O204200400013 ENDBIB 11 0 O204200400014 NOCOMMON 0 0 O204200400015 DATA 5 11 O204200400016 EN DATA 1DATA 2DATA-ERR 2FLAG O204200400017 MEV MB MICRO-B MICRO-B NO-DIM O204200400018 9.6 29. 0.012 0.007 1. O204200400019 10.1 50. 0.005 0.007 1. O204200400020 10.3 58. 0.006 0.007 1. O204200400021 10.6 73. 0.010 0.007 1. O204200400022 10.9 90. 0.13 0.02 O204200400023 11.1 105. 0.52 0.08 O204200400024 11.3 116. 0.88 0.18 O204200400025 11.6 139. 1.9 0.4 O204200400026 12.1 178. 4.0 0.4 O204200400027 12.6 234. 10.5 2.0 O204200400028 13.6 350. 19.4 2.4 O204200400029 ENDDATA 13 0 O204200400030 ENDSUBENT 29 0 O204200499999 SUBENT O2042005 20120918 O049O204200500001 BIB 4 7 O204200500002 REACTION 1(94-PU-240(P,F),,SIG) O204200500003 2(94-PU-240(P,N)95-AM-240-L,,SIG) O204200500004 DECAY-DATA2(95-AM-240-L,0.9MSEC) O204200500005 STATUS (TABLE).Table 2 of J,NP/A,95,513,1967 O204200500006 ERR-ANALYS (DATA-ERR).The relative uncertainty is given in table. O204200500007 Total uncertainty in the all cross section O204200500008 determinations is estimated to be +-30%. O204200500009 ENDBIB 7 0 O204200500010 NOCOMMON 0 0 O204200500011 DATA 4 3 O204200500012 EN DATA 1DATA 2DATA-ERR 2 O204200500013 MEV MB MICRO-B MICRO-B O204200500014 10.3 0.37 0.11 O204200500015 10.9 94. 0.44 0.13 O204200500016 11.3 105. 0.28 0.09 O204200500017 ENDDATA 5 0 O204200500018 ENDSUBENT 17 0 O204200599999 SUBENT O2042006 20120918 O049O204200600001 BIB 3 4 O204200600002 REACTION (95-AM-241(P,X)95-AM-240-L,,SIG) O204200600003 Assuming a maximum of 3 delayed fission tracks O204200600004 STATUS (TABLE).Table 2 of J,NP/A,95,513,1967 O204200600005 DECAY-DATA (95-AM-240-L,0.9MSEC) O204200600006 ENDBIB 4 0 O204200600007 NOCOMMON 0 0 O204200600008 DATA 2 1 O204200600009 EN DATA-MAX O204200600010 MEV MICRO-B O204200600011 10.3 0.004 O204200600012 ENDDATA 3 0 O204200600013 ENDSUBENT 12 0 O204200699999 ENDENTRY 6 0 O204299999999