ENTRY 21529 20190125 22742152900000001 SUBENT 21529001 20190125 22742152900100001 BIB 13 31 2152900100002 TITLE The emission of long range alpha-particles 2152900100003 in the thermal neutron induced fission of U-233, 2152900100004 U-235 and Pu-239 2152900100005 AUTHOR (C.Wagemans,A.J.Deruytter) 2152900100006 INSTITUTE (2BLGMOL) S.C.K./C.E.N. MOL 2152900100007 (2BLGGHT) I.N.W. Gent. 2152900100008 REFERENCE (J,ZP/A,275,149,1975) Tables. 2152900100009 (P,INDC(SEC)-51,72,1975) Abstract. 2152900100010 FACILITY (REAC,2BLGMOL) Thermal reactor, BR2. 2152900100011 INC-SOURCE (THCOL) Well collimated thermal neutron beam from 2152900100012 the BR2 high-flux reactor of SCK-CEN. 2152900100013 INC-SPECT .Thermal Maxwellian spectrum. 2152900100014 METHOD (ASSOP) Detection of long range alphas. 2152900100015 DETECTOR (SIBAR) 600 mm*2 active area silicon surface barrier 2152900100016 detector. Heavy fragments and long range alphas were 2152900100017 separated by inserting a 20 micro-m thick aluminium 2152900100018 screen between the fissile target layer and the 2152900100019 detector. 2152900100020 PART-DET (A) Long range alphas. 2152900100021 (HF) Heavy fission fragments for ratio to binary 2152900100022 fission. 2152900100023 CORRECTION .Corrected for background by dummy runs and by 2152900100024 coincidence checks. 2152900100025 ERR-ANALYS (DATA-ERR) Quoted errors are conservative, and are 2152900100026 estimated from statistical accuracy and the 2152900100027 extrapolation of the measured peaks to a Gaussian shape2152900100028 HISTORY (19800429C) 2152900100029 (20080116A) Date is corrected - SM 2152900100030 (20080116A) Last corrections have been done. 2152900100031 (20190125A) SD: REACTION code in Subent 002 corrected 2152900100032 according to MEMO CP-D/969. 2152900100033 ENDBIB 31 0 2152900100034 COMMON 1 3 2152900100035 EN-DUMMY 2152900100036 EV 2152900100037 2.53E-02 2152900100038 ENDCOMMON 3 0 2152900100039 ENDSUBENT 38 0 2152900199999 SUBENT 21529002 20190125 22742152900200001 BIB 4 8 2152900200002 REACTION (92-U-233(N,F)2-HE-4,TER,FY,,MXW) Yield of long 2152900200003 range alphas. 2152900200004 SAMPLE Enriched U-233 (99.76%), 178 mug/cm2 thick, prepared 2152900200005 by electro-spraying uranyl-niumacetate onto a 0.2 mm 2152900200006 thick aluminium disk. 2152900200007 STATUS (TABLE) Table 4, Zeit.Phys.,A175(1975)149 2152900200008 HISTORY (20190125A) SD: STATUS, SAMPLE updated. DATA-ERR 2152900200009 corrected (0.08 -> 0.009). 2152900200010 ENDBIB 8 0 2152900200011 NOCOMMON 0 0 2152900200012 DATA 2 1 2152900200013 DATA DATA-ERR 2152900200014 PC/FIS PC/FIS 2152900200015 0.206 0.009 2152900200016 ENDDATA 3 0 2152900200017 ENDSUBENT 16 0 2152900299999 SUBENT 21529003 20190125 22742152900300001 BIB 4 9 2152900300002 REACTION (92-U-233(N,F),BIN/TER,FY/RAT,,MXW) 2152900300003 Ratio of binary to ternary fission. 2152900300004 SAMPLE .Enriched U-233 (99.76%), prepared by 2152900300005 electrospraying uranyl- niumacetate onto a 0.2 mm 2152900300006 thick aluminium disk. 2152900300007 STATUS (TABLE) Table 2,Zeit.Phys.,A175(1975)149 2152900300008 HISTORY (20080116U) RATIO heading changed to DATA 2152900300009 (20190125A) SD: SF6=SIG/RAT -> FY/RAT in REACTION code.2152900300010 STATUS, SAMPLE updated. ANALYSIS deleted. 2152900300011 ENDBIB 9 0 2152900300012 NOCOMMON 0 0 2152900300013 DATA 2 1 2152900300014 DATA DATA-ERR 2152900300015 NO-DIM NO-DIM 2152900300016 460. 20. 2152900300017 ENDDATA 3 0 2152900300018 ENDSUBENT 17 0 2152900399999 SUBENT 21529004 20190125 22742152900400001 BIB 4 9 2152900400002 REACTION (92-U-235(N,F)2-HE-4,TER,FY,,MXW) 2152900400003 Yield of long range alphas. 2152900400004 SAMPLE Enriched U-235 (93.336 and 97.663%), 147. mug/cm2 2152900400005 and 120 mug/cm2 thick, correspondingly, 2152900400006 prepared by electrospraying uranyl-niumacetate 2152900400007 and by evaporation of uf4 onto aluminium discs. 2152900400008 STATUS (TABLE) Table 4 from Zeit.Phys.,A175(1975)149. 2152900400009 HISTORY (20190125A) SD: STATUS, SAMPLE updated. Values 2152900400010 corrected according to presentation in the Table. 2152900400011 ENDBIB 9 0 2152900400012 NOCOMMON 0 0 2152900400013 DATA 2 1 2152900400014 DATA DATA-ERR 2152900400015 PC/FIS PC/FIS 2152900400016 0.163 0.005 2152900400017 ENDDATA 3 0 2152900400018 ENDSUBENT 17 0 2152900499999 SUBENT 21529005 20190125 22742152900500001 BIB 4 10 2152900500002 REACTION (92-U-235(N,F),BIN/TER,FY/RAT,,MXW) 2152900500003 Binary to ternay fission ratio. 2152900500004 SAMPLE Enriched U-235 (93.336 and 97.663%), 147. mug/cm2 2152900500005 and 120 mug/cm2 thick, correspondingly, 2152900500006 prepared by electrospraying uranyl-niumacetate 2152900500007 and by evaporation of uf4 onto aluminium discs. 2152900500008 STATUS (TABLE) Table 2 from Zeit.Phys.,A175(1975)149. 2152900500009 HISTORY (20080116U) RATIO heading changed to DATA 2152900500010 (20190125A) SD: SF6=SIG/RAT -> FY/RAT in REACTION code.2152900500011 STATUS, SAMPLE updated. SF9=DERIV in REACTION code. 2152900500012 ENDBIB 10 0 2152900500013 NOCOMMON 0 0 2152900500014 DATA 2 1 2152900500015 DATA DATA-ERR 2152900500016 NO-DIM NO-DIM 2152900500017 530. 20. 2152900500018 ENDDATA 3 0 2152900500019 ENDSUBENT 18 0 2152900599999 SUBENT 21529006 20190125 22742152900600001 BIB 6 12 2152900600002 REACTION (92-U-235(N,A)90-TH-232,,SIG,,MXW,DERIV) Cross section 2152900600003 SAMPLE Enriched U-235 (93.336 and 97.663%), 147. mug/cm2 2152900600004 and 120 mug/cm2 thick, correspondingly, 2152900600005 prepared by electrospraying uranyl-niumacetate 2152900600006 and by evaporation of uf4 onto aluminium discs. 2152900600007 ANALYSIS .From the difference the ternary/binary ratio 2152900600008 and the LRA/binary ratio. 2152900600009 MONITOR (92-U-235(N,F),,SIG,,MXW) No value given. 2152900600010 STATUS (TABLE) From the text on p.151 of 2152900600011 Zeit.Phys.,A175(1975)149. 2152900600012 HISTORY (20190125A) SD: SF9=DERIV in REACTION code. STATUS, 2152900600013 SAMPLE updated. 2152900600014 ENDBIB 12 0 2152900600015 NOCOMMON 0 0 2152900600016 DATA 2 1 2152900600017 DATA DATA-ERR 2152900600018 MB MB 2152900600019 50. 20. 2152900600020 ENDDATA 3 0 2152900600021 ENDSUBENT 20 0 2152900699999 SUBENT 21529007 20190125 22742152900700001 BIB 4 8 2152900700002 REACTION (94-PU-239(N,F)2-HE-4,TER,FY,,MXW) 2152900700003 Yield of long range alphas. 2152900700004 SAMPLE Enriched Pu-239 (99.956%), 120 mug/cm2 thick, prepared2152900700005 by electro-spraying pluto-niumacetate onto 0.2mm 2152900700006 aluminium disks. 2152900700007 STATUS (TABLE) .Table 4 from Zeit.Phys.,A175(1975)149. 2152900700008 HISTORY (20190125A) SD: STATUS, SAMPLE updated. Values 2152900700009 corrected according to presentation in the Table. 2152900700010 ENDBIB 8 0 2152900700011 NOCOMMON 0 0 2152900700012 DATA 2 1 2152900700013 DATA DATA-ERR 2152900700014 PC/FIS PC/FIS 2152900700015 0.211 0.009 2152900700016 ENDDATA 3 0 2152900700017 ENDSUBENT 16 0 2152900799999 SUBENT 21529008 20190125 22742152900800001 BIB 4 8 2152900800002 REACTION (94-PU-239(N,F),BIN/TER,FY/RAT,,MXW) 2152900800003 SAMPLE Enriched Pu-239 (99.956%), 120 mug/cm2 thick, prepared2152900800004 by electro-spraying pluto-niumacetate onto 0.2mm 2152900800005 aluminium disks. 2152900800006 STATUS (TABLE) Table 2 from Zeit.Phys.,A175(1975)149 2152900800007 HISTORY (20080116U) RATIO heading changed to DATA 2152900800008 (20190125A) SD: SF6=SIG/RAT -> FY/RAT in REACTION code.2152900800009 STATUS, SAMPLE updated. SF9=DERIV in REACTION code. 2152900800010 ENDBIB 8 0 2152900800011 NOCOMMON 0 0 2152900800012 DATA 2 1 2152900800013 DATA DATA-ERR 2152900800014 NO-DIM NO-DIM 2152900800015 420. 20. 2152900800016 ENDDATA 3 0 2152900800017 ENDSUBENT 16 0 2152900899999 SUBENT 21529009 20190125 22742152900900001 BIB 6 11 2152900900002 REACTION (94-PU-239(N,A)92-U-236,,SIG,,MXW,DERIV) Cross section.2152900900003 SAMPLE Enriched Pu-239 (99.956%), 120 mug/cm2 thick, prepared2152900900004 by electro-spraying pluto-niumacetate onto 0.2mm 2152900900005 aluminium disks. 2152900900006 ANALYSIS From the difference between the ternary/binary 2152900900007 ratio and the LRA/binary ratio. 2152900900008 MONITOR (94-PU-239(N,F),,SIG,,MXW) Value not given. 2152900900009 STATUS (TABLE) From the text,p.151 of Zeit.Phys.,A175(1975)1492152900900010 HISTORY (20080116U) Last corrections have been done. 2152900900011 (20190125U) SD: STATUS, SAMPLE updated. 2152900900012 SF4=U-236-G -> U-236, SF9=DERIV in REACTION code. 2152900900013 ENDBIB 11 0 2152900900014 NOCOMMON 0 0 2152900900015 DATA 2 1 2152900900016 DATA DATA-ERR 2152900900017 MB MB 2152900900018 30. 30. 2152900900019 ENDDATA 3 0 2152900900020 ENDSUBENT 19 0 2152900999999 ENDENTRY 9 0 2152999999999