ENTRY 33121 20190816 31903312100000001 SUBENT 33121001 20190816 31903312100100001 BIB 11 25 3312100100002 TITLE Long-range alpha particle emission in the fission of 3312100100003 235U by 3-MeV neutrons 3312100100004 AUTHOR (V.A.Hattangadi, T.Methasiri, D.M.Nadkarni, R.Ramanna, 3312100100005 P.N.Rama Rao) 3312100100006 INSTITUTE (3INDTRM) 3312100100007 REFERENCE (C,65SALZBURG,2,397,1965) 3312100100008 FACILITY (VDG) 5.5 MeV Van de Graaff for 3 MeV neutrons 3312100100009 INC-SOURCE (P-T) 3312100100010 SAMPLE The uranium target prepared by electroplating 235U on 3312100100011 a 10 mg/cm2 Al backing. The uranium coating was about 3312100100012 1 mg/cm2 . 3312100100013 DETECTOR (SIBAR) Three silicon surface barrier type solid- 3312100100014 state detectors were used to detect the long-range 3312100100015 alpha particles. 3312100100016 The active area of the detector was about 200 mm2, and 3312100100017 was operated with a positive bias of 100 V. 3312100100018 Two thin detectors, D2 and D3, were used to detect 3312100100019 alpha particles emitted at 0 degree and 90 degree with 3312100100020 angular resolution of about +- 18 degree. 3312100100021 (SCIN) The fission fragments were detected by a gas 3312100100022 scintillation counter. 3312100100023 PART-DET (FF,A) 3312100100024 METHOD (COINC) The long-range alpha particles detected in 3312100100025 coincidence with the fission fragments. 3312100100026 HISTORY (20190816C) VT 3312100100027 ENDBIB 25 0 3312100100028 COMMON 2 3 3312100100029 EN EN-RSL 3312100100030 MEV KEV 3312100100031 3. 200. 3312100100032 ENDCOMMON 3 0 3312100100033 ENDSUBENT 32 0 3312100199999 SUBENT 33121002 20190816 31903312100200001 BIB 4 11 3312100200002 REACTION ((92-U-235(N,F)2-HE-4,TER,FY/DA)// 3312100200003 (92-U-235(N,F)2-HE-4,TER,FY/DA)) 3312100200004 COMMENT The anisotropy of the angular distribution was obtained3312100200005 by considering the alpha particles spectrum above 8 MeV3312100200006 in both the 0 degree and 90 degree directions. 3312100200007 The value was found to be equal to 1.27 +- 0.25 and 3312100200008 1.33 +- 0.13 before and after the interchange of 3312100200009 0 degree 90 degree respectively. 3312100200010 ERR-ANALYS (DATA-ERR) No information about source of uncertainty. 3312100200011 STATUS (TABLE) Text (p.401) of Phys. and Chem. of Fission 3312100200012 Conf., 2 (1965) 397 3312100200013 ENDBIB 11 0 3312100200014 COMMON 2 3 3312100200015 ANG-NM ANG-DN 3312100200016 ADEG ADEG 3312100200017 0. 90. 3312100200018 ENDCOMMON 3 0 3312100200019 DATA 2 1 3312100200020 DATA DATA-ERR 3312100200021 NO-DIM NO-DIM 3312100200022 1.32 0.12 3312100200023 ENDDATA 3 0 3312100200024 ENDSUBENT 23 0 3312100299999 SUBENT 33121003 20190816 31903312100300001 BIB 4 7 3312100300002 REACTION (92-U-235(N,F)2-HE-4,TER,FY/DE,,REL) 3312100300003 CORRECTION The long-range alpha particles spectrum in the 3-MeV 3312100300004 neutron fission of 235U has been corrected for the loss3312100300005 of energy in the aluminum backing of the target. 3312100300006 ERR-ANALYS (DATA-ERR) No information about source of uncertainty. 3312100300007 STATUS (CURVE) Fig. 2 of Phys. and Chem. of Fission Conf., 2 3312100300008 (1965) 397 3312100300009 ENDBIB 7 0 3312100300010 NOCOMMON 0 0 3312100300011 DATA 3 28 3312100300012 E DATA DATA-ERR 3312100300013 MEV ARB-UNITS ARB-UNITS 3312100300014 7.696 72.680 7.028 3312100300015 7.999 67.280 6.791 3312100300016 8.531 72.650 7.028 3312100300017 9.180 89.500 10.070 3312100300018 9.733 106.100 10.770 3312100300019 10.410 95.540 9.602 3312100300020 11.120 115.200 10.540 3312100300021 11.670 128.800 10.780 3312100300022 12.490 143.000 11.940 3312100300023 13.250 158.200 12.180 3312100300024 14.050 150.200 10.540 3312100300025 14.680 167.500 11.480 3312100300026 15.410 199.600 13.350 3312100300027 16.170 228.900 13.590 3312100300028 16.920 176.100 14.050 3312100300029 17.730 160.200 11.950 3312100300030 18.470 155.000 12.650 3312100300031 19.340 120.800 11.010 3312100300032 20.060 65.010 8.901 3312100300033 20.950 60.300 8.668 3312100300034 21.770 36.620 6.793 3312100300035 22.620 37.990 7.028 3312100300036 23.490 26.720 4.919 3312100300037 24.360 21.310 4.919 3312100300038 25.230 4.646 2.344 3312100300039 26.140 12.110 3.983 3312100300040 27.700 5.034 2.342 3312100300041 28.550 4.303 2.105 3312100300042 ENDDATA 30 0 3312100300043 ENDSUBENT 42 0 3312100399999 SUBENT 33121004 20190816 31903312100400001 BIB 3 7 3312100400002 REACTION (92-U-235(N,F)2-HE-4,BIN/TER,SIG/RAT) 3312100400003 ERR-ANALYS (ERR-S) Statistical errors that do not include any 3312100400004 possible errors in the corrections made for geometry 3312100400005 employed. 3312100400006 The maximum estimated error due to latter at about 10%.3312100400007 STATUS (TABLE) Text (p.402) of Phys. and Chem. of Fission 3312100400008 Conf., 2 (1965) 397 3312100400009 ENDBIB 7 0 3312100400010 NOCOMMON 0 0 3312100400011 DATA 2 1 3312100400012 DATA ERR-S 3312100400013 NO-DIM NO-DIM 3312100400014 780. 15. 3312100400015 ENDDATA 3 0 3312100400016 ENDSUBENT 15 0 3312100499999 ENDENTRY 4 0 3312199999999