ENTRY 41668 20210317 41954166800000001 SUBENT 41668001 20210317 41954166800100001 BIB 11 32 4166800100002 REFERENCE (J,JNE,4,86,1957) Engl.translation of: 4166800100003 (J,AE,1,(3),27,1956) Issue 3. 4166800100004 (J,SJA,1,311,1956) Engl. translation of J,AE,1,27,1956 4166800100005 AUTHOR (B.G.Erozolimsky,I.E.Kutikov,Y.P.Dobrynin,M.I.Pevzner, 4166800100006 L.S.Danelyan,S.S.Moskalev) 4166800100007 TITLE Measurements of eta for Pu239 specimens containing 4166800100008 some Pu240, and of the effective resonance-absorption 4166800100009 integral for Pu240 4166800100010 INSTITUTE (4RUSRUS) 4166800100011 FACILITY (REAC,4RUSRUS) 4166800100012 (OSCIP,4RUSRUS) 4166800100013 METHOD Pile-oscillator method 4166800100014 (FNB) Gd or Cd filters. 4166800100015 INC-SOURCE (REAC) 4166800100016 INC-SPECT dE/E spectrum, lower boundary 0.15 or 0.4 eV as result4166800100017 of Gd or Cd filters. 4166800100018 DETECTOR (IOCH) For measurement of spon.fission rate in samples 4166800100019 to determine isotopic composition in one sample 4166800100020 using half-lives as standard (Pu-240 6.4+-0.25 %): 4166800100021 Pu-240 - 1.25E+11 yr for spon.fission. 4166800100022 Pu-239 - 5.E+15 yr for spon.fission. 4166800100023 Pu-242 - 7.25E+10 yr for spon.fission ; 4166800100024 checked by alpha-activity to be 6.7+-0.4 %. 4166800100025 Other samples composition was determined relative to 4166800100026 first using strong 1.06 eV resonance of Pu-240 from 4166800100027 transmission curve. 4166800100028 (BF3) BF3 counters distributed in graphite were used 4166800100029 for neutrons detection. 4166800100030 SAMPLE Pu-240 content 1.56+-0.12, 2.5+-0.2, 6.5+-0.25, 4166800100031 15.8+-1.3 % in samples #2-5 . 4166800100032 HISTORY (20190513C) M.M. 4166800100033 (20210317U) Issue number was added in AE ref. 4166800100034 ENDBIB 32 0 4166800100035 NOCOMMON 0 0 4166800100036 ENDSUBENT 35 0 4166800199999 SUBENT 41668002 20190513 41824166800200001 BIB 5 14 4166800200002 REACTION 1((94-PU-240(N,ABS),,RI)/(94-PU-239(N,ABS),,RI)) 4166800200003 2(94-PU-240(N,ABS),,RI) 4166800200004 MONITOR 2(94-PU-239(N,ABS),,RI) 4166800200005 Epicadmium absorption resonance integral 4166800200006 From report of G.A.Dorofeev+, USSR Ac.Sciences, 1953. 4166800200007 FLAG Pu-240 Pu-239 ( g/cm2) 4166800200008 (1.) 1.32E-3 142.E-3 4166800200009 (2.) 2.57E-3 100.E-3 4166800200010 (3.) 6.58E-3 256.E-3 4166800200011 (4.) 21.9E-3 115.E-3 4166800200012 (5.) 41.6E-3 219.E-3 4166800200013 ERR-ANALYS (DATA-ERR) Type of error is not explained in the 4166800200014 article. 4166800200015 STATUS (TABLE) Table 4 of J.of Nucl. Energy,4,86,1957 4166800200016 ENDBIB 14 0 4166800200017 COMMON 3 3 4166800200018 EN-MIN MONIT MONIT-ERR 4166800200019 EV B B 4166800200020 0.5 460. 23. 4166800200021 ENDCOMMON 3 0 4166800200022 DATA 5 5 4166800200023 DATA 1DATA-ERR 1DATA 2DATA-ERR 2FLAG 4166800200024 NO-DIM NO-DIM B PER-CENT NO-DIM 4166800200025 11.9 2. 5450. 20. 1. 4166800200026 9.0 1.5 4150. 20. 2. 4166800200027 5.9 1.5 2700. 20. 3. 4166800200028 5.4 0.1 2500. 4. 4. 4166800200029 4.3 0.2 2000. 4. 5. 4166800200030 ENDDATA 7 0 4166800200031 ENDSUBENT 30 0 4166800299999 SUBENT 41668003 20190513 41824166800300001 BIB 4 7 4166800300002 REACTION (94-PU-240(N,ABS),,RI) 4166800300003 ANALYSIS Derived by extrapolation to zero. 4166800300004 ERR-ANALYS (DATA-ERR) Type of error is not explained in the 4166800300005 article. 4166800300006 STATUS (TABLE) Text, page 90 of of J.of Nucl. Energy,4,86,19574166800300007 (DEP,41668003) Directly measured data for different 4166800300008 samples 4166800300009 ENDBIB 7 0 4166800300010 COMMON 1 3 4166800300011 EN-MIN 4166800300012 EV 4166800300013 0.5 4166800300014 ENDCOMMON 3 0 4166800300015 DATA 2 1 4166800300016 DATA DATA-ERR 4166800300017 B B 4166800300018 9000. 3000. 4166800300019 ENDDATA 3 0 4166800300020 ENDSUBENT 19 0 4166800399999 ENDENTRY 3 0 4166899999999