ENTRY C2429 20191210 C188C242900000001 SUBENT C2429001 20191210 C188C242900100001 BIB 10 24 C242900100002 TITLE Fission Fragment Mass Distributions and Kinetic C242900100003 Energies for Spontaneously Fissioning Isomers C242900100004 AUTHOR (R.L.Ferguson,F.Plasil,G.D.Alam,H.W.Schmitt) C242900100005 REFERENCE (J,PL/B,31,526,1970) C242900100006 #doi:10.1016/0370-2693(70) C242900100007 INSTITUTE (1USAORL) C242900100008 FACILITY (VDGT,1USAORL) The Oak Ridge tandem Van de Graaff C242900100009 accelerator. C242900100010 INC-SPECT The beam current of 13 MeV protons or deuterons was 1 C242900100011 to 3 microA. C242900100012 DETECTOR (SIBAR) Two silicon surface barrier detectors. C242900100013 SAMPLE Target deposit thicknesses were ~50 microg/cm2. C242900100014 METHOD (COINC) Silicon detectors were oriented so that they C242900100015 would detect coincident pairs of fission fragments C242900100016 from compound nuclei recoiling downstream from the C242900100017 target. Fragments from prompt fission events C242900100018 occurring in the target could not reach the detector C242900100019 faces without scattering at least once. The scattered C242900100020 fragments, of course, did not produce coincidences in C242900100021 the detectors and in general have lower energies. The C242900100022 coincidence rates were 5 to 20 counts per hour. C242900100023 'Background' runs in which 232Th was bombarded C242900100024 yielded no coincidence counts in 11 hours. C242900100025 HISTORY (20191210C) BP C242900100026 ENDBIB 24 0 C242900100027 COMMON 1 3 C242900100028 EN C242900100029 MEV C242900100030 13.0 C242900100031 ENDCOMMON 3 0 C242900100032 ENDSUBENT 31 0 C242900199999 SUBENT C2429002 20191210 C188C242900200001 BIB 3 3 C242900200002 REACTION (94-PU-240(P,2N+F)MASS,PRV,FY,,REL) C242900200003 COMMENT Fissioning system: Am-239m C242900200004 STATUS (CURVE) Fig. 1, page 527. C242900200005 ENDBIB 3 0 C242900200006 NOCOMMON 0 0 C242900200007 DATA 2 40 C242900200008 MASS DATA C242900200009 NO-DIM ARB-UNITS C242900200010 80.328 2.018E-01 C242900200011 82.295 2.623E+00 C242900200012 84.426 8.072E-01 C242900200013 86.393 7.870E+00 C242900200014 88.361 1.816E+00 C242900200015 90.492 7.466E+00 C242900200016 92.459 2.502E+01 C242900200017 94.590 2.987E+01 C242900200018 96.557 4.076E+01 C242900200019 98.525 4.883E+01 C242900200020 100.328 6.700E+01 C242900200021 102.459 5.469E+01 C242900200022 104.426 7.406E+01 C242900200023 106.557 6.478E+01 C242900200024 108.525 3.491E+01 C242900200025 110.656 2.684E+01 C242900200026 112.787 4.641E+00 C242900200027 114.590 6.054E-01 C242900200028 116.393 2.825E+00 C242900200029 118.361 0.000E+00 C242900200030 120.656 0.000E+00 C242900200031 122.623 8.072E-01 C242900200032 124.590 3.632E+00 C242900200033 126.557 9.888E+00 C242900200034 128.525 2.280E+01 C242900200035 130.492 3.673E+01 C242900200036 132.623 3.168E+01 C242900200037 134.426 5.590E+01 C242900200038 136.557 6.235E+01 C242900200039 138.525 4.561E+01 C242900200040 140.492 4.661E+01 C242900200041 142.459 5.085E+01 C242900200042 144.426 2.704E+01 C242900200043 146.393 1.070E+01 C242900200044 148.525 1.049E+01 C242900200045 150.492 1.191E+01 C242900200046 152.623 6.054E-01 C242900200047 154.590 2.623E+00 C242900200048 156.557 1.816E+00 C242900200049 158.525 2.018E-01 C242900200050 ENDDATA 42 0 C242900200051 ENDSUBENT 50 0 C242900299999 SUBENT C2429003 20191210 C188C242900300001 BIB 3 3 C242900300002 REACTION (92-U-235(D,P+F)MASS,PRV,FY,,REL) C242900300003 COMMENT Fissioning system: U-236m C242900300004 STATUS (CURVE) Fig. 1, page 527. C242900300005 ENDBIB 3 0 C242900300006 NOCOMMON 0 0 C242900300007 DATA 2 36 C242900300008 MASS DATA C242900300009 NO-DIM ARB-UNITS C242900300010 82.440 9.781E-02 C242900300011 84.235 2.008E+00 C242900300012 86.524 6.032E+00 C242900300013 88.661 1.308E+01 C242900300014 90.476 2.103E+01 C242900300015 92.610 2.706E+01 C242900300016 94.560 2.696E+01 C242900300017 96.535 3.401E+01 C242900300018 98.489 3.491E+01 C242900300019 100.560 2.202E+01 C242900300020 102.522 2.504E+01 C242900300021 104.612 1.799E+01 C242900300022 106.540 1.094E+01 C242900300023 108.302 2.884E+00 C242900300024 110.407 1.633E-01 C242900300025 112.358 6.016E-02 C242900300026 114.472 5.750E-02 C242900300027 116.423 5.504E-02 C242900300028 119.513 5.115E-02 C242900300029 121.301 4.890E-02 C242900300030 123.740 4.583E-02 C242900300031 125.376 2.963E+00 C242900300032 127.486 1.954E+00 C242900300033 129.142 1.101E+01 C242900300034 131.419 1.101E+01 C242900300035 133.266 2.903E+01 C242900300036 135.317 9.897E+00 C242900300037 137.484 2.590E+01 C242900300038 139.445 2.892E+01 C242900300039 141.383 2.499E+01 C242900300040 143.361 3.304E+01 C242900300041 145.412 1.401E+01 C242900300042 147.347 8.976E+00 C242900300043 149.437 1.826E+00 C242900300044 151.548 9.169E-01 C242900300045 153.497 1.091E-01 C242900300046 ENDDATA 38 0 C242900300047 ENDSUBENT 46 0 C242900399999 SUBENT C2429004 20191210 C188C242900400001 BIB 3 3 C242900400002 REACTION (94-PU-240(P,2N+F)MASS,PRV,KE,LF+HF) C242900400003 COMMENT Fissioning system: Am-239m C242900400004 STATUS (CURVE) Fig. 1, page 527. C242900400005 ENDBIB 3 0 C242900400006 NOCOMMON 0 0 C242900400007 DATA 2 25 C242900400008 MASS DATA C242900400009 NO-DIM MEV C242900400010 128.145 1.835E+02 C242900400011 128.962 1.868E+02 C242900400012 129.943 1.905E+02 C242900400013 131.263 1.897E+02 C242900400014 132.251 1.901E+02 C242900400015 132.914 1.885E+02 C242900400016 134.238 1.864E+02 C242900400017 135.057 1.885E+02 C242900400018 136.041 1.910E+02 C242900400019 136.877 1.857E+02 C242900400020 138.033 1.845E+02 C242900400021 139.022 1.845E+02 C242900400022 140.019 1.808E+02 C242900400023 141.176 1.796E+02 C242900400024 141.997 1.808E+02 C242900400025 143.159 1.772E+02 C242900400026 143.986 1.760E+02 C242900400027 145.140 1.760E+02 C242900400028 146.133 1.739E+02 C242900400029 147.299 1.687E+02 C242900400030 148.116 1.719E+02 C242900400031 149.272 1.711E+02 C242900400032 150.270 1.671E+02 C242900400033 151.245 1.732E+02 C242900400034 152.073 1.716E+02 C242900400035 ENDDATA 27 0 C242900400036 ENDSUBENT 35 0 C242900499999 SUBENT C2429005 20191210 C188C242900500001 BIB 3 3 C242900500002 REACTION (92-U-235(D,P+F)MASS,PRV,KE,LF+HF) C242900500003 COMMENT Fissioning system: U-236m C242900500004 STATUS (CURVE) Fig. 1, page 527. C242900500005 ENDBIB 3 0 C242900500006 NOCOMMON 0 0 C242900500007 DATA 2 20 C242900500008 MASS DATA C242900500009 NO-DIM MEV C242900500010 129.063 1.812E+02 C242900500011 130.027 1.722E+02 C242900500012 131.021 1.771E+02 C242900500013 132.013 1.807E+02 C242900500014 132.986 1.758E+02 C242900500015 133.976 1.787E+02 C242900500016 134.956 1.770E+02 C242900500017 136.099 1.754E+02 C242900500018 136.917 1.745E+02 C242900500019 137.897 1.729E+02 C242900500020 139.046 1.733E+02 C242900500021 140.189 1.712E+02 C242900500022 140.999 1.671E+02 C242900500023 141.995 1.724E+02 C242900500024 142.805 1.683E+02 C242900500025 143.948 1.663E+02 C242900500026 144.773 1.687E+02 C242900500027 145.755 1.679E+02 C242900500028 146.898 1.658E+02 C242900500029 148.209 1.654E+02 C242900500030 ENDDATA 22 0 C242900500031 ENDSUBENT 30 0 C242900599999 ENDENTRY 5 0 C242999999999