ENTRY            10930   20170822                             14331093000000001 
SUBENT        10930001   20170822                             14331093000100001 
BIB                 10         33                                 1093000100002 
TITLE      Prompt Neutron Multiplicity Distribution in the        1093000100003 
           Spontaneous Fission of Curium-242                      1093000100004 
AUTHOR     (J.Halperin,C.E.Bemis JR,J.W.T.Dabbs,B.H.Ketelle,      1093000100005 
           R.W.Stoughton,R.W.Hoff,R.J.Dougan)                     1093000100006 
REFERENCE  (J,NSE,75,56,1980)                                     1093000100007 
           (J,BAP,25,487,1980)                                    1093000100008 
INSTITUTE  (1USAORL,1USALRL)                                      1093000100009 
DETECTOR   (PROPC) Fission neutrons counted with 30 helium-3      1093000100010 
           detectors, 2.5-cm diameter, 60-cm long, 6-atm          1093000100011 
           pressure, embedded in a cylindrical paraffin and       1093000100012 
           polyethylene matrix, 54-cm diameter, 90-cm long.       1093000100013 
           (FISCH) Gas filled counter with hemispherical          1093000100014 
           geometry. Active sample deposited on convex surface,   1093000100015 
           electron charge collected on concentric surface 2-mm   1093000100016 
           from source.                                           1093000100017 
METHOD     (COINC) Fission chamber inserted into a 10-cm          1093000100018 
           diameter hole that penetrates central core of          1093000100019 
           paraffin-polyethylene cylinder. Helium-3 counters      1093000100020 
           placed parallel to cylinder axis, spaced symmetrically 1093000100021 
           into 3 concentric rings. Fission of known Cf-252       1093000100022 
           sample used to calibrate He-3 counters. A pulse from   1093000100023 
           a fission chamber serves to open a gate to count       1093000100024 
           nearly all neutrons detected in coincidence with the   1093000100025 
           fission fragment.                                      1093000100026 
MONITOR    (98-CF-252(0,F),PR,NU)                                 1093000100027 
CORRECTION Corrections made for background neutrons and           1093000100028 
           accidentals. Contributions to spontaneous fission      1093000100029 
           rates by impurities not corrected for.                 1093000100030 
STATUS     (APRVD) Approved by J.Halperin, 1981/2/12.             1093000100031 
HISTORY    (19801201C)                                            1093000100032 
           (20170822A) BP: Updated to new date formats,lower      1093000100033 
           case. Corrections according last EXFOR rules and       1093000100034 
           Dict. Added fission neutron multiplicity distribution. 1093000100035 
ENDBIB              33          0                                 1093000100036 
COMMON               1          3                                 1093000100037 
MONIT                                                             1093000100038 
PRT/FIS                                                           1093000100039 
      3.760                                                       1093000100040 
ENDCOMMON            3          0                                 1093000100041 
ENDSUBENT           40          0                                 1093000199999 
SUBENT        10930002   20170822                             14331093000200001 
BIB                  6          9                                 1093000200002 
REACTION   (96-CM-242(0,F),PR,NU)                                 1093000200003 
SAMPLE     Cm-242 formed from the radioactive decay of Am-242.    1093000200004 
ERR-ANALYS (DATA-ERR) Quoted error includes counting statistics   1093000200005 
           and systematic uncertainties.                          1093000200006 
DECAY-DATA (95-AM-242-G,16.02HR,B-)                               1093000200007 
           (96-CM-242,162.8D,A)                                   1093000200008 
STATUS     (TABLE) page 59.                                       1093000200009 
HISTORY    (19820108A) Corrected reaction, monitor.               1093000200010 
           (20170822A) BP: Corrected units.                       1093000200011 
ENDBIB               9          0                                 1093000200012 
NOCOMMON             0          0                                 1093000200013 
DATA                 2          1                                 1093000200014 
DATA       DATA-ERR                                               1093000200015 
PRT/FIS    PRT/FIS                                                1093000200016 
      2.532      0.013                                            1093000200017 
ENDDATA              3          0                                 1093000200018 
ENDSUBENT           17          0                                 1093000299999 
SUBENT        10930003   20170822                             14331093000300001 
BIB                  7          8                                 1093000300002 
REACTION   (96-CM-242(0,F),PR/NUM,NU)                             1093000300003 
SAMPLE     Cm-242 formed from the radioactive decay of Am-242.    1093000300004 
ERR-ANALYS (ERR-S) Counting statistics only.                      1093000300005 
FLAG       (1.) Multiplicity 7 is used for 7 and more neutrons.   1093000300006 
DECAY-DATA (95-AM-242-G,16.02HR,B-)                               1093000300007 
           (96-CM-242,162.8D,A)                                   1093000300008 
STATUS     (TABLE) Table II, page 59.                             1093000300009 
HISTORY    (20170822C) BP                                         1093000300010 
ENDBIB               8          0                                 1093000300011 
NOCOMMON             0          0                                 1093000300012 
DATA                 4          8                                 1093000300013 
PART-OUT   DATA       ERR-S      FLAG                             1093000300014 
NO-DIM     NO-DIM     NO-DIM     NO-DIM                           1093000300015 
         0.    0.27695    0.00069                                 1093000300016 
         1.    0.41220    0.00084                                 1093000300017 
         2.    0.23595    0.00064                                 1093000300018 
         3.    0.06498    0.00033                                 1093000300019 
         4.   0.008559   0.000115                                 1093000300020 
         5.   0.000549   0.000026                                 1093000300021 
         6.   0.000016   0.000004                                 1093000300022 
         7.  0.0000002  0.0000002         1.                      1093000300023 
ENDDATA             10          0                                 1093000300024 
ENDSUBENT           23          0                                 1093000399999 
SUBENT        10930004   20170822                             14331093000400001 
BIB                  6          8                                 1093000400002 
REACTION   (98-CF-252(0,F),PR/NUM,NU)                             1093000400003 
SAMPLE     (98-CF-252,ENR=0.995) Isotopically pure 252Cf was      1093000400004 
           deposited with an ion accelerator 400 A beneath the    1093000400005 
           surface of an aluminum foil.                           1093000400006 
ERR-ANALYS (ERR-S) Counting statistics only.                      1093000400007 
FLAG       (1.) Multiplicity 7 is used for 7 and more neutrons.   1093000400008 
STATUS     (TABLE) Table II, page 59.                             1093000400009 
HISTORY    (20170822C) BP                                         1093000400010 
ENDBIB               8          0                                 1093000400011 
NOCOMMON             0          0                                 1093000400012 
DATA                 4          8                                 1093000400013 
PART-OUT   DATA       ERR-S      FLAG                             1093000400014 
NO-DIM     NO-DIM     NO-DIM     NO-DIM                           1093000400015 
         0.    0.14366    0.00072                                 1093000400016 
         1.    0.33167    0.00109                                 1093000400017 
         2.    0.31444    0.00107                                 1093000400018 
         3.    0.15708    0.00075                                 1093000400019 
         4.    0.04453    0.00040                                 1093000400020 
         5.    0.00723    0.00015                                 1093000400021 
         6.   0.000644   0.000040                                 1093000400022 
         7.   0.000026   0.000007         1.                      1093000400023 
ENDDATA             10          0                                 1093000400024 
ENDSUBENT           23          0                                 1093000499999 
ENDENTRY             4          0                                 1093099999999