ENTRY 30093 20211203 32043009300000001 SUBENT 30093001 20211203 32043009300100001 BIB 15 60 3009300100002 INSTITUTE (3INDTRM) 3009300100003 REFERENCE (J,NP/A,112,241,1968)Angular anisot,bin to tern.ratio 3009300100004 (R,BARC-318,1967) same as NP A112,but appendix added 3009300100005 (S,INDC(IND)-3,318,1967) prelim results,superseded 3009300100006 (P,AEET-267,2,1966)brief,ternary fiss. cross section 3009300100007 (P,BARC-364,31,1968) short note,no data 3009300100008 (C,66BOMBAY,,38,1966) preliminary results 3009300100009 (C,65SALZBURG,2,397,1965) binary/ternary FY 3009300100010 AUTHOR (D.M.Nadkarni) 3009300100011 TITLE Angular anisotropy of fission fragments in ternary 3009300100012 fission of U-235 induced by 3 MeV neutrons 3009300100013 EXP-YEAR (1967) 3009300100014 FACILITY (VDG) 5.5 MeV Van de Graaff for 3 MeV neutrons 3009300100015 (REAC,3INDTRM) Apsara reactor for some thermal neutron 3009300100016 measurement 3009300100017 INC-SOURCE (P-T) Neutron energy spread about 200 keV, calculated3009300100018 from tritium target thickness. 3009300100019 SAMPLE Metallic U-235 of about 1.5 cm2 area and 1 mg/cm2 3009300100020 thickness was coated on a 10 millig/cm2 Al backing 3009300100021 METHOD Two independent methods. In the first method a gridded 3009300100022 ionisation chamber was used to measure the direction of3009300100023 emission of fission fragments and a CsI(Tl) crystal for3009300100024 detecting long range alphas. In the second one semicon-3009300100025 ductor detectors were used for detecting both fission 3009300100026 fragments and long-range alphas,using coincidence and 3009300100027 anticoincidence set-up 3009300100028 DETECTOR (CSICR) CsI(Tl) crystal for detecting LRA 3009300100029 gridded ionization chamber for fragments 3009300100030 (SOLST) semi-conductor detectors for LRA and fragms.3009300100031 ANALYSIS Angular anisotropies expressed by ratio of two measured3009300100032 intensities n(ang). Ratio at 3 MeV obtained on the 3009300100033 basis of isotropy for the case of thermal neutron 3009300100034 binary fission 3009300100035 MONITOR (92-U-235(N,F),,DE,FF) calibration of collector pulse 3009300100036 heights into fragment energies done using known 3009300100037 energies of the light and heavy fragments peaks. 3009300100038 PART-DET (FF,A) 3009300100039 ERR-ANALYS (DATA-ERR) No information 3009300100040 HISTORY (19821202A) ML. Revision of references, all subentries 3009300100041 converted to reaction formalism. The following 3009300100042 subentries were deleted for reasons given below 3009300100043 subent 8 = contained a quantity and value in the data3009300100044 table which was not measured but taken from liter- 3009300100045 ature. The original contents of subent 8 were re- 3009300100046 placed by data originally included in subent 6. 3009300100047 subent 9 = contained no data table, but in a comment 3009300100048 some qualitative description of the energy spectrum3009300100049 of alpha particles in 3 MeV neutron fission, taken 3009300100050 from a progress report (AEET-228,page 4). 3009300100051 Furthermore,in the final publication no information3009300100052 on any measurement of alpha-spectra is given. 3009300100053 subent 10 = contained a deduced value related to the 3009300100054 data in subent 11. It is now included in a comment 3009300100055 of subent 11 (refer to it for details). 3009300100056 (19830309U) ML. Minor corrections 3009300100057 (20080305A) BIB section updated 3009300100058 (20100303A) SD: REACTION code in Subent 007 was changed3009300100059 according to EXFOR rules. 3009300100060 (20211203A) VS. Reference 65SALZBURG,2,397,1965 added. 3009300100061 010 restored and updated. 011 REACTION corrected. 3009300100062 ENDBIB 60 0 3009300100063 NOCOMMON 0 0 3009300100064 ENDSUBENT 63 0 3009300199999 SUBENT 30093002 20080215 31253009300200001 BIB 5 16 3009300200002 REACTION (92-U-235(N,F),,DA,FF,REL) 3009300200003 COMMENT Angular anisotropy ratio n(7-deg)/n(80deg) for binary 3009300200004 fission measured with ionisation chamber and CsI set-up3009300200005 assuming isotropy for thermal neutron binary fission. 3009300200006 Note = in the text of the publication (see 'status') 3009300200007 the angles are given as 7 and 85 deg, in table 13009300200008 as 17 and 80 deg respectively. 3009300200009 STATUS (TABLE) Data taken from NP A 112 241 5/1968 3009300200010 HISTORY (19690715C) compiled into Dastar 3009300200011 (19710310T) converted from Dastar-00903 3009300200012 (19760906U) OS. 3009300200013 (19821202A) ML.Converted to REACTION, some comments and3009300200014 corrections added, data units changed 3009300200015 (20080215S) Dataset was restored. 3009300200016 CORRECTION Observed data are given. No correction mentioned for 3009300200017 3 MeV binary fission 3009300200018 ENDBIB 16 0 3009300200019 NOCOMMON 0 0 3009300200020 DATA 4 2 3009300200021 EN ANG DATA DATA-ERR 3009300200022 MEV ADEG NO-DIM NO-DIM 3009300200023 3. 7. 1.08 0.03 3009300200024 3. 80. 1. 3009300200025 ENDDATA 4 0 3009300200026 ENDSUBENT 25 0 3009300299999 SUBENT 30093003 20080215 31253009300300001 BIB 6 19 3009300300002 REACTION (92-U-235(N,F),,DA,FF,RSD) 3009300300003 DETECTOR (SOLST) semiconductor detector 3009300300004 COMMENT Angular anisotropy ratio n(0-deg)/n(90deg) for binary 3009300300005 fission measured with semiconductor detectors 3009300300006 assuming isotropy for thermal neutron binary fission. 3009300300007 STATUS (TABLE) Data taken from NP/A 112 241 5/1968 3009300300008 HISTORY (19690715C) compiled into Dastar 3009300300009 (19710310T) converted from Dastar-00903 3009300300010 (19760906U) OS. 3009300300011 (19821202A)ML.Converted to reaction,90-deg data deleted3009300300012 (20080215S) Dataset was restored. 3009300300013 CORRECTION Observed anisotropy for the first set of measurements 3009300300014 with a distance source-sample of 20 cm was 1.11+-0.01. 3009300300015 Observed anisotropy for the second set of measurements 3009300300016 with a distance source-sample of 7 cm was 1.04+-0.01. 3009300300017 Observed anisotropy for thermal neutrons was, due to 3009300300018 preferential detection at 90.deg, 0.99+-0.01. 3009300300019 Final result was corrected for nonuniform neutron flux 3009300300020 and finite angular resolution. 3009300300021 ENDBIB 19 0 3009300300022 NOCOMMON 0 0 3009300300023 DATA 4 1 3009300300024 EN ANG DATA DATA-ERR 3009300300025 MEV ADEG NO-DIM NO-DIM 3009300300026 3. 0. 1.17 0.02 3009300300027 ENDDATA 3 0 3009300300028 ENDSUBENT 27 0 3009300399999 SUBENT 30093004 20080215 31253009300400001 BIB 6 18 3009300400002 REACTION (92-U-235(N,F),TER,DA,FF,REL) 3009300400003 DETECTOR (CSICR) CsI(Tl) crystal for detecting LRA 3009300400004 gridded ionization chamber for fragments 3009300400005 COMMENT Angular anisotropy ratio n(7deg)/n(80deg) for ternary 3009300400006 fission measured with ionisation chamber and CsI set-up3009300400007 assuming isotropy for thermal neutron binary fission. 3009300400008 STATUS (TABLE) data taken from Nucl.Phys. A112 241 5/1968 3009300400009 HISTORY (19690715C)compiled into Dastar 3009300400010 (19710310T)converted from Dastar-00903 3009300400011 (19760906U) OS. 3009300400012 (19821202A) ML.Converted to reaction,data units changed3009300400013 (20080215S) Dataset was restored. 3009300400014 CORRECTION Observed anisotropy was 0.64+-0.07. 3009300400015 This was corrected for preferential detection of 3009300400016 ternary fragments at 90 degrees, using thermal fission 3009300400017 data (uncorrected for angular resolution effects). 3009300400018 Observed anisotropy for thermal neutrons was, due to 3009300400019 preferential detection at 90.deg, 0.75+-0.08. 3009300400020 ENDBIB 18 0 3009300400021 NOCOMMON 0 0 3009300400022 DATA 4 2 3009300400023 EN ANG DATA DATA-ERR 3009300400024 MEV ADEG ARB-UNITS ARB-UNITS 3009300400025 3. 7. 0.85 0.12 3009300400026 3. 80. 1. 3009300400027 ENDDATA 4 0 3009300400028 ENDSUBENT 27 0 3009300499999 SUBENT 30093005 20080215 31253009300500001 BIB 6 16 3009300500002 REACTION (92-U-235(N,F),TER,DA,FF,RSD) 3009300500003 DETECTOR (SOLST) semiconductor detector 3009300500004 COMMENT Angular anisotropy ratio n(0-deg)/n(90-deg) for ternary3009300500005 fission measured with semiconductor detectors 3009300500006 assuming isotropy for thermal neutron binary fission. 3009300500007 STATUS (TABLE) Data taken from NP/A 112 241 5/1968 3009300500008 HISTORY (19690715C) compiled into Dastar 3009300500009 (19710310T) converted from Dastar-00903 3009300500010 (19760906U) OS. 3009300500011 (19821202A) ML.Converted to reaction,90-deg data delete3009300500012 (20080215S) Dataset was restored. 3009300500013 CORRECTION Observed anisotropy was 0.65+-0.05. 3009300500014 This was corrected for the effects of non-uniform 3009300500015 neutron flux and finite angular resolution. 3009300500016 Observed anisotropy for thermal neutrons was, due to 3009300500017 preferential detection at 90.deg, 0.74+-0.04. 3009300500018 ENDBIB 16 0 3009300500019 NOCOMMON 0 0 3009300500020 DATA 4 2 3009300500021 EN ANG DATA DATA-ERR 3009300500022 MEV ADEG NO-DIM NO-DIM 3009300500023 3. 0. 0.89 0.10 3009300500024 3. 90. 1. 3009300500025 ENDDATA 4 0 3009300500026 ENDSUBENT 25 0 3009300599999 SUBENT 30093006 20080215 31253009300600001 BIB 4 11 3009300600002 REACTION (92-U-235(N,F),BIN/TER,DA/RAT,FF,REL) 3009300600003 COMMENT Binary to ternary ratio in 3 MeV neutron fission 3009300600004 divided by that in thermal neutron fission, for fission3009300600005 fragments detected at 0 degrees. 3009300600006 STATUS (TABLE) Data taken from NP/a 112 241 5/1968 3009300600007 HISTORY (19690715C) compiled into Dastar 3009300600008 (19710310T) converted from Dastar-00903 3009300600009 (19760906U) Os. 3009300600010 (19821202A) ML.Converted to reaction. Thermal reference3009300600011 data line added.90 deg data moved to subentry 8, 3009300600012 angle to common and En to data section 3009300600013 ENDBIB 11 0 3009300600014 COMMON 1 3 3009300600015 ANG 3009300600016 ADEG 3009300600017 0.0000E+00 3009300600018 ENDCOMMON 3 0 3009300600019 DATA 3 1 3009300600020 EN DATA DATA-ERR 3009300600021 EV ARB-UNITS ARB-UNITS 3009300600022 2.5000E-02 1.4100E+00 0.11 3009300600023 ENDDATA 3 0 3009300600024 ENDSUBENT 23 0 3009300699999 SUBENT 30093007 20100308 31443009300700001 BIB 4 9 3009300700002 REACTION ((92-U-235(N,F),,AKE,FF)- 3009300700003 (92-U-235(N,F),TER,AKE,FF)) 3009300700004 COMMENT Average kinetic energy of fission fragments in binary 3009300700005 fission minus average kinetic energy of fission 3009300700006 fragments in ternary fission 3009300700007 STATUS (TABLE) Data taken from NP/A 112 241 5/1968 3009300700008 HISTORY (19690715C) compiled into Dastar 3009300700009 (19710310T) converted from Dastar-00903 3009300700010 (19821202A) ML.Converted to reaction as difference 3009300700011 ENDBIB 9 0 3009300700012 NOCOMMON 0 0 3009300700013 DATA 3 1 3009300700014 EN DATA DATA-ERR 3009300700015 EV MEV MEV 3009300700016 2.5300E-02 1.3400E+01 2.1000E+00 3009300700017 ENDDATA 3 0 3009300700018 ENDSUBENT 17 0 3009300799999 SUBENT 30093008 20080215 31253009300800001 BIB 4 9 3009300800002 REACTION (92-U-235(N,F),BIN/TER,DA/RAT,FF,REL) 3009300800003 COMMENT Binary to ternary ratio in 3 MeV neutron fission 3009300800004 relative to that in thermal neutron fission for 3009300800005 fragments detected at 90 degrees. 3009300800006 STATUS (TABLE) Data taken from Nucl. Phys. A112,241,May 1968 3009300800007 HISTORY (19690715C) compiled into Dastar-00903 3009300800008 (19710310T) converted from Dastar as part of subentry 63009300800009 (19821202A) ML.Converted to reaction.90 degree data mov3009300800010 here from subentry 6. Other changes see subent 6. 3009300800011 ENDBIB 9 0 3009300800012 COMMON 1 3 3009300800013 ANG 3009300800014 ADEG 3009300800015 9.0000E+01 3009300800016 ENDCOMMON 3 0 3009300800017 DATA 3 1 3009300800018 EN DATA DATA-ERR 3009300800019 EV ARB-UNITS ARB-UNITS 3009300800020 2.5000E-02 1.2400E+00 0.08 3009300800021 ENDDATA 3 0 3009300800022 ENDSUBENT 21 0 3009300899999 NOSUBENT 30093009 20211203 32043009300900001 SUBENT 30093010 20211203 32043009301000001 BIB 4 8 3009301000002 REACTION (92-U-235(N,F)2-HE-4,TER,SIG) 3009301000003 COMMENT It can be assumed that it was deduced from the 3 MeV 3009301000004 neutron fission cross-section ratio given below, using3009301000005 a literature value for the binary fission cross-section3009301000006 STATUS (TABLE) Data taken from AEET-267 2 (1966) 3009301000007 HISTORY (19710310C) Compiled into EXFOR 3009301000008 (20211203S) VS. Dataset was restored and updated to the3009301000009 new EXFOR format. COMMENT moved from 011. 3009301000010 ENDBIB 8 0 3009301000011 NOCOMMON 0 0 3009301000012 DATA 3 1 3009301000013 EN DATA DATA-ERR 3009301000014 MEV MB MB 3009301000015 3. 1.96 0.29 3009301000016 ENDDATA 3 0 3009301000017 ENDSUBENT 16 0 3009301099999 SUBENT 30093011 20211203 32043009301100001 BIB 3 6 3009301100002 REACTION (92-U-235(N,F)2-HE-4,BIN/TER,FY/RAT) 3009301100003 STATUS (CURVE) Plotted on Fig 4. of 65SALZBURG,2,397,1965. 3009301100004 HISTORY (19710309C) compiled into Exfor 3009301100005 (19821202A) ML.Converted to reaction. Comment added. 3009301100006 (20211203A) VS. SF5 TER/BIN -> BIN/TER; SF6: SIG->FY; 3009301100007 Comment moved to 010. STATUS corrected. 3009301100008 ENDBIB 6 0 3009301100009 NOCOMMON 0 0 3009301100010 DATA 3 2 3009301100011 EN DATA DATA-ERR 3009301100012 EV NO-DIM NO-DIM 3009301100013 2.5300E-02 6.5000E+02 1.0000E+01 3009301100014 3.E+06 780. 15. 3009301100015 ENDDATA 4 0 3009301100016 ENDSUBENT 15 0 3009301199999 ENDENTRY 11 0 3009399999999