ENTRY 22047 20230302 2204700000001 SUBENT 22047001 20230302 20231011 2204700100001 BIB 15 42 2204700100002 TITLE Half-lives, fission yields and neutron emission 2204700100003 probabilities of 87Se and 88Se, and evidence for 87As 2204700100004 AUTHOR (J.-V.Kratz,G.Herrmann) 2204700100005 REFERENCE (J,JIN,32,3713,1970) 2204700100006 REL-REF (N,23362001,H.D.Schuessler+,C,69VIENNA,,591,1969) 2204700100007 Some prelim.results of group yields. 2204700100008 (O,21273001,J.-V.Kratz+,C,73ROCH,2,95,1973) - new data 2204700100009 of Se 2204700100010 INSTITUTE (2GERMNZ) 2204700100011 FACILITY (REAC,2GERMNZ) Mainz Triga reactor. Fast pneumatic tube2204700100012 system. 2204700100013 INC-SOURCE (REAC) Flashes of 0.1 sec duration and about 1.E+14 2204700100014 neutrons/cm2 maximum flux. 2204700100015 INC-SPECT Thermal neutron spectrum. 2204700100016 METHOD (CHSEP) Chemical separation, using a rapid hydride- 2204700100017 volatilization procedure, prior to neutron activity 2204700100018 measurements. 5 sec duration . 2204700100019 DETECTOR (PROPC) The neutron activities were measured with a 2204700100020 shielded circular arrangement of eight He-3 counting 2204700100021 tubes embedded in paraffin. The efficiency was about 2204700100022 5% and the background 3 counts/min. 2204700100023 (NAICR) 3 * 3 inch NaI(Tl) scintillator used for 2204700100024 measuring the tracers Se-75 and As-76. 2204700100025 (GELI) A 10 cm3 GeLi detector was used to control the 2204700100026 purity of each selenium sample. 2204700100027 SAMPLE 0.50 mg of U-235 dissolved in 0.1 ml of 0.1 n nitric 2204700100028 acid, sealed in small glass capsules. 2204700100029 CORRECTION No details given. 2204700100030 ERR-ANALYS (DATA-ERR) No details given. 2204700100031 ADD-RES Mass Most probable charge Charge dispersion parameter2204700100032 87. 34.57+-0.07 0.57+-0.09 2204700100033 88. 34.91+-0.08 0.58+-0.10 2204700100034 from Table 3 of J.Inorg.Nucl.Chem.,32,3713,1970 2204700100035 HISTORY (19871106C) N.O. 2204700100036 (19871210E) 2204700100037 (20170830A) M.M. Upper -> lower case correction. 2204700100038 Dates were corrected for 4-digits year. 2204700100039 Subents 005-007 were added. 2204700100040 EN was moved from Subent 001 to Subents 002-004 . 2204700100041 Subent 004 was deleted according to a comment of 2204700100042 N.Otsuka ( NDS,IAEA), data were moved in ADD-RES. 2204700100043 (20230302U) SD: Subent 002 updated. 2204700100044 ENDBIB 42 0 2204700100045 NOCOMMON 0 0 2204700100046 ENDSUBENT 45 0 2204700199999 SUBENT 22047002 20230302 20231011 2204700200001 BIB 8 22 2204700200002 REACTION (92-U-235(N,F)ELEM/MASS,CUM,FY,,FRC/SPA) 2204700200003 ANALYSIS (DECAY) Half-lives determined from neutron decay-curves2204700200004 in this work. 2204700200005 Se isotopes cumulative yields were obtained by using 2204700200006 estimated cumulative yields for Br-87 and Br-88. 2204700200007 As-87 existence was found from a slight growth of 2204700200008 Se-87 activity. 2204700200009 DECAY-DATA ((1.)33-AS-87,0.6SEC) 0.6+-0.3 sec 2204700200010 ((2.)34-SE-87,5.85SEC) 5.85+-0.15 sec 2204700200011 ((3.)34-SE-88,1.4SEC) 1.4+-0.3 sec 2204700200012 MONITOR (92-U-235(N,F)ELEM/MASS,CUM,FY,,FRC/SPA) 2204700200013 DECAY-MON (35-BR-87,55.SEC) 2204700200014 (35-BR-88,16.SEC) 2204700200015 MONIT-REF (23362001,H.D.Schuessler+,C,69VIENNA,,591,1969) 2204700200016 STATUS (TABLE) Text, pages 3717 (Se-87,88), 3718 (As-87) of 2204700200017 J.Inorg.Nucl.Chem.,32,3713,1970 2204700200018 (SPSDD,21273002) final data 2204700200019 HISTORY (20170830A) M.M. HLs and its errors were moved in 2204700200020 DECAY-DATA . 2204700200021 (20230302A) SD:Reaction ratio (in REACTION and MONITOR)2204700200022 was changed on reaction code with: SF8=SPA -> FRC/SPA. 2204700200023 STATUS updated. 2204700200024 ENDBIB 22 0 2204700200025 COMMON 2 3 2204700200026 EN-DUMMY ELEM-NRM 2204700200027 EV NO-DIM 2204700200028 2.5300E-02 35. 2204700200029 ENDCOMMON 3 0 2204700200030 DATA 6 3 2204700200031 ELEMENT MASS DATA DATA-ERR DECAY-FLAG MONIT 2204700200032 NO-DIM NO-DIM NO-DIM NO-DIM NO-DIM NO-DIM 2204700200033 33. 87. 0.04 0.02 1. 2204700200034 34. 87. 0.41 0.07 2. 0.95 2204700200035 34. 88. 0.24 0.06 3. 0.85 2204700200036 ENDDATA 5 0 2204700200037 ENDSUBENT 36 0 2204700299999 SUBENT 22047003 20170830 22682204700300001 BIB 5 9 2204700300002 REACTION (92-U-235(N,F)ELEM/MASS,CUM,FY,,SPA) 2204700300003 MONITOR (92-U-235(N,F)MASS,CHN,FY,,SPA) 2204700300004 MONIT-REF (13065001,H.Farrar+,J,CJP,40,1017,1962) 2204700300005 STATUS (TABLE) Table 2 and text, pages 3718 of 2204700300006 J.Inorg.Nucl.Chem.,32,3713,1970 2204700300007 Final data for 33-As-87 are in Subent 20521.003 2204700300008 (DEP,22047002) Fractional cumulative yields. 2204700300009 HISTORY (19871106C) N.O. 2204700300010 (19871210E) 2204700300011 ENDBIB 9 0 2204700300012 COMMON 1 3 2204700300013 EN-DUMMY 2204700300014 EV 2204700300015 2.5300E-02 2204700300016 ENDCOMMON 3 0 2204700300017 DATA 6 3 2204700300018 ELEMENT MASS DATA DATA-ERR MONIT MONIT-ERR 2204700300019 NO-DIM NO-DIM PC/FIS PC/FIS PC/FIS PC/FIS 2204700300020 33. 87. 0.10 0.05 2.37 0.05 2204700300021 34. 87. 0.97 0.16 2.37 0.05 2204700300022 34. 88. 0.86 0.20 3.56 0.07 2204700300023 ENDDATA 5 0 2204700300024 ENDSUBENT 23 0 2204700399999 NOSUBENT 22047004 20170830 22682204700400001 SUBENT 22047005 20170830 22682204700500001 BIB 5 12 2204700500002 REACTION (92-U-235(N,F)ELEM/MASS,DL/CUM,NU,,SPA) 2204700500003 Delayed neutron yield for specific precursors 2204700500004 ANALYSIS NU was calculated as cumulative fission yield 2204700500005 multiplied by Pn. 2204700500006 REL-REF (A,,P.del Marmol+,C,69VIENNA,,938,1969) 2204700500007 (A,23353005,P.del Marmol+,J,JIN,32,705,1970) 2204700500008 (0.15+-0.05)*10**-4 n/fis. 2204700500009 STATUS (TABLE) Table 2 of J.Inorg.Nucl.Chem.,32,3713,1970 2204700500010 (DEP,22047003) Cumulative yields 2204700500011 (DEP,22047006) Pn for Se-87 2204700500012 (DEP,22047007) Pn for Se-88 2204700500013 HISTORY (20170830C) M.M. Subent was added. 2204700500014 ENDBIB 12 0 2204700500015 COMMON 1 3 2204700500016 EN-DUMMY 2204700500017 EV 2204700500018 2.5300E-02 2204700500019 ENDCOMMON 3 0 2204700500020 DATA 4 2 2204700500021 ELEMENT MASS DATA DATA-ERR 2204700500022 NO-DIM NO-DIM PC/FIS PC/FIS 2204700500023 34. 87. 0.24E-02 0.07E-02 2204700500024 34. 88. 0.13E-02 0.08E-02 2204700500025 ENDDATA 4 0 2204700500026 ENDSUBENT 25 0 2204700599999 SUBENT 22047006 20170830 22682204700600001 BIB 4 9 2204700600002 REACTION (34-SE-87(0,B-)35-BR-87,,PN) 2204700600003 REL-REF (A,,P.del Marmol+,C,69VIENNA,,938,1969) 2204700600004 (A,23353004,P.del Marmol+,J,JIN,32,705,1970) 2204700600005 0.23+-0.07 % 2204700600006 (A,,L.Tomlinson,C,69VIENNA,,604,1969) 2204700600007 0.2+-0.1 % 2204700600008 STATUS (TABLE) Table 2 of J.Inorg.Nucl.Chem.,32,3713,1970 2204700600009 Also in Abstract on page 3713. 2204700600010 HISTORY (20170830C) M.M. Subent was added. 2204700600011 ENDBIB 9 0 2204700600012 NOCOMMON 0 0 2204700600013 DATA 2 1 2204700600014 DATA DATA-ERR 2204700600015 NO-DIM NO-DIM 2204700600016 0.0025 0.0006 2204700600017 ENDDATA 3 0 2204700600018 ENDSUBENT 17 0 2204700699999 SUBENT 22047007 20170830 22682204700700001 BIB 5 16 2204700700002 REACTION (34-SE-88(0,B-)35-BR-88,,PN) 2204700700003 REL-REF (A,,P.del Marmol+,C,69VIENNA,,938,1969) 2204700700004 (A,23353007,P.del Marmol+,J,JIN,32,705,1970) 2204700700005 <1. % 2204700700006 ANALYSIS Value 0.15+-0.09 % is finally obtained by authors ( see2204700700007 page 3720 ) after analysis of two values: 2204700700008 - 0.18+-0.10 % - based on Pn 4.0+-0.5 value for Br-88 2204700700009 and activity ratio 0.39+-0.20 ( se88/Br88) ; 2204700700010 - 0.15+-0.08 % - shotter interval to beginning of 2204700700011 counting, i.e. 5.0 sec after irradiation was used; 2204700700012 - possible interference from strong delayed-neutron 2204700700013 precursors was estimated - total contamination < 12% 2204700700014 was taken into account. 2204700700015 STATUS (TABLE) Table 2 of J.Inorg.Nucl.Chem.,32,3713,1970 2204700700016 Also in Abstract on page 3713. 2204700700017 HISTORY (20170830C) M.M. Subent was added. 2204700700018 ENDBIB 16 0 2204700700019 NOCOMMON 0 0 2204700700020 DATA 2 1 2204700700021 DATA DATA-ERR 2204700700022 NO-DIM NO-DIM 2204700700023 0.0015 0.0009 2204700700024 ENDDATA 3 0 2204700700025 ENDSUBENT 24 0 2204700799999 ENDENTRY 7 0 2204799999999