ENTRY 33083 20150507 317233083 0 1 SUBENT 33083001 20150507 317233083 1 1 BIB 10 36 33083 1 2 TITLE Prompt gamma-ray emission in the spontaneous ternary 33083 1 3 fission of 252Cf 33083 1 4 AUTHOR (N.N.Ajitanand) 33083 1 5 INSTITUTE (3INDTRM) 33083 1 6 REFERENCE (J,NP/A,133,625,1969) 33083 1 7 SAMPLE The source of 252Cf deposited over an area of 0.2 cm 33083 1 8 diameter on a 61.4 mg/cm2 thick platinum backing. The 33083 1 9 source foil was mounted between two steel rings. The 33083 1 10 source side was covered by a thin 20 mu-g/cm2 thick 33083 1 11 VYNS plastic film to prevent escape of californium 33083 1 12 atoms from the platinum foil. The distance between 33083 1 13 the source and the surface of the solid-state 33083 1 14 detector was l.1 cm. The distance from source to NaI 33083 1 15 crystal face was 6.5 cm. 33083 1 16 DETECTOR (NAICR) A 5 cm x 5 cm NaI(Tl) crystal was used to 33083 1 17 detect the gamma rays. 33083 1 18 (SIBAR) A silicon surface-barrier semiconductor 33083 1 19 detector was reverse-biased to a voltage of 90 V to 33083 1 20 give a depletion depth of about 310 mu-m for 33083 1 21 detection of the fission fragments in the binary 33083 1 22 experiment, while in the separate ternary experiment, 33083 1 23 it was covered with a 10 mg/cm2 thick aluminium foil 33083 1 24 so that only those long-range alpha particles which 33083 1 25 had an energy greater than 6.8 MeV could be detected. 33083 1 26 METHOD (COINC) Measured prompt gammas and fission fragments 33083 1 27 in coincidence 33083 1 28 CORRECTION Subtraction of chance coincidences as well as 33083 1 29 correction for contributions from fission neutrons 33083 1 30 were done. These were calculated to be 8% for the 33083 1 31 binary case and 4% for the ternary case. 33083 1 32 COMMENT Digitization is done on Fig.2 in which the X-axis is 33083 1 33 given in channel number. Authors also provided the 33083 1 34 corresponding gamma energies for each tick. However, 33083 1 35 the plot of channel number versus gamma energy is not 33083 1 36 linear which may introduce some error. 33083 1 37 HISTORY (20150507C) Compiled by H. Lalremruata+BL 33083 1 38 ENDBIB 36 0 33083 1 39 NOCOMMON 0 0 3 33083 1 40 ENDSUBENT 39 0 33083 199999 SUBENT 33083002 20150507 317233083 2 1 BIB 3 6 33083 2 2 REACTION (98-CF-252(0,F)0-G-0,PR,FY/DE,,REL) 33083 2 3 STATUS (CURVE) Data for binary fission obtained from fig.2 33083 2 4 of Nucl. Phys. A, 133(1969)625 33083 2 5 COMMENT Due to poor quality of the figure, the digitized 33083 2 6 value of six data points above gamma energy of 33083 2 7 1463.56 keV may not be good. 33083 2 8 ENDBIB 6 0 33083 2 9 NOCOMMON 0 0 33083 2 10 DATA 2 27 33083 2 11 E DATA 33083 2 12 KEV ARB-UNITS 33083 2 13 102.99 1.010 33083 2 14 159.87 1.050 33083 2 15 208.58 1.220 33083 2 16 265.46 1.310 33083 2 17 330.11 1.150 33083 2 18 389.12 0.976 33083 2 19 441.87 0.755 33083 2 20 495.47 0.607 33083 2 21 557.78 0.493 33083 2 22 620.34 0.405 33083 2 23 675.71 0.359 33083 2 24 731.95 0.328 33083 2 25 901.33 0.205 33083 2 26 951.38 0.167 33083 2 27 1059.70 0.180 33083 2 28 1124.57 0.223 33083 2 29 1175.17 0.211 33083 2 30 1286.37 0.184 33083 2 31 1345.61 0.154 33083 2 32 1399.03 0.140 33083 2 33 1463.56 0.101 33083 2 34 1512.00 0.076 33083 2 35 1573.86 0.064 33083 2 36 1628.02 0.057 33083 2 37 1687.32 0.047 33083 2 38 1740.35 0.037 33083 2 39 1793.94 0.027 33083 2 40 ENDDATA 29 0 33083 2 41 ENDSUBENT 40 0 33083 299999 SUBENT 33083003 20150507 317233083 3 1 BIB 3 5 33083 3 2 REACTION (98-CF-252(0,F)0-G-0,PR,FY/DE,,MSC) Energy spectrum 33083 3 3 of prompt gamma-ray in ternary fission 33083 3 4 STATUS (CURVE) Data for ternary fission obtained from fig.2 33083 3 5 of Nucl. Phys. A, 133(1969)625 33083 3 6 ERR-ANALYS (DATA-ERR) No information on source of uncertainty 33083 3 7 ENDBIB 5 0 33083 3 8 NOCOMMON 0 0 3 33083 3 9 DATA 3 31 33083 3 10 E DATA DATA-ERR 33083 3 11 KEV ARB-UNITS ARB-UNITS 33083 3 12 103.99 0.764 0.022 33083 3 13 159.04 0.817 0.024 33083 3 14 216.09 0.932 0.026 33083 3 15 272.90 0.972 0.027 33083 3 16 329.76 0.883 0.025 33083 3 17 386.76 0.773 0.026 33083 3 18 446.24 0.571 0.028 33083 3 19 502.12 0.524 0.024 33083 3 20 560.47 0.383 0.025 33083 3 21 616.32 0.330 0.024 33083 3 22 668.96 0.265 0.025 33083 3 23 728.22 0.252 0.019 33083 3 24 787.18 0.198 0.019 33083 3 25 840.32 0.203 0.019 33083 3 26 896.35 0.175 0.019 33083 3 27 949.15 0.133 0.022 33083 3 28 1005.33 0.126 0.017 33083 3 29 1063.28 0.147 0.017 33083 3 30 1114.72 0.133 0.019 33083 3 31 1174.19 0.150 0.019 33083 3 32 1229.02 0.173 0.014 33083 3 33 1288.24 0.155 0.019 33083 3 34 1344.24 0.122 0.015 33083 3 35 1400.26 0.093 0.018 33083 3 36 1454.77 0.072 0.017 33083 3 37 1512.51 0.064 0.017 33083 3 38 1571.78 0.053 0.013 33083 3 39 1627.95 0.044 0.017 33083 3 40 1685.68 0.036 0.015 33083 3 41 1738.75 0.031 0.017 33083 3 42 1793.35 0.023 0.014 33083 3 43 ENDDATA 33 0 33083 3 44 ENDSUBENT 43 0 33083 399999 ENDENTRY 3 0 3308399999999