ENTRY 40288 20151217 41734028800000001 SUBENT 40288001 20151217 41734028800100001 BIB 15 33 4028800100002 INSTITUTE (4UKRIJD) 4028800100003 REFERENCE (J,SNP,15,369,1972) Eng.trans.of YF,15,(4),662,1972 4028800100004 (J,YF,15,(4),662,197204) 4028800100005 AUTHOR (G.E.Belovitskii,L.N.Kolesnikova,I.M.Frank) 4028800100006 TITLE Angular distributions of 13.7 MeV neutrons elastically 4028800100007 scattered by the isotopes Pb-206,207,208. 4028800100008 FACILITY (VDG,4UKRIJD) Van de Graaff 4028800100009 INC-SOURCE (D-T) Deuteron-tritium 4028800100010 METHOD (ABSFY) Cylindrical geometry. 4028800100011 Distance neutron source-sample 6.2 cm, 4028800100012 sample - neutron detector 112-124 cm. 4028800100013 DETECTOR (TRD) Track detector 4028800100014 MONITOR (1-H-1(N,SCT)1-H-1,,SIG) 4028800100015 Cross sections were determined relative to n-p 4028800100016 scattering C-S ; value and ref.are not given in the 4028800100017 article. 4028800100018 PART-DET (N) Neutrons 4028800100019 COMMENT Data are compared with optical model calculation 4028800100020 STATUS (TABLE) Received from author 1975-02-05 4028800100021 CORRECTION Correction is introduced on neutron flux absorption. 4028800100022 Background was measured at run without sample. 4028800100023 ERR-ANALYS (ERR-T) Quoted error consist of 4028800100024 * statistical error and 4028800100025 * error of geometry and 4028800100026 (ERR-1) incident neutron flux measurement(10%). 4028800100027 ANG-RSL angular resolution +-10 deg . 4028800100028 HISTORY (19750210C) Compiled at the centre 4028800100029 (20150208U) SD: Updated to new date formats,lower case.4028800100030 ERR-ANALYS updated. 4028800100031 (20151210A) M.M. Article was checked, BIB information 4028800100032 was updated in AUTHOR,METHOD,MONITOR,ANALYSIS, 4028800100033 CORRECTION. 4028800100034 ANG-RSL units: PER-CENT -> ADEG. 4028800100035 ENDBIB 33 0 4028800100036 COMMON 4 3 4028800100037 EN EN-RSL-HW ERR-1 ANG-RSL 4028800100038 MEV KEV PER-CENT ADEG 4028800100039 13.7 150. 10. 10. 4028800100040 ENDCOMMON 3 0 4028800100041 ENDSUBENT 40 0 4028800199999 SUBENT 40288002 20151217 41734028800200001 BIB 3 8 4028800200002 REACTION (82-PB-206(N,EL)82-PB-206,,DA) 4028800200003 dif. elas. scat. c-s. 4028800200004 SAMPLE (82-PB-206,ENR=0.913) Cylinder with diameter 4.4 cm, 4028800200005 length 2.7 cm, weight 465 g. Pb-206 enrichment is 91.3%4028800200006 ANALYSIS Small contribution of inelastically scattered neutron 4028800200007 as result of excitation of levels with energy ~0.6 MeV 4028800200008 could not separated, but it was assumed to be 4028800200009 negligible . 4028800200010 ENDBIB 8 0 4028800200011 NOCOMMON 0 0 4028800200012 DATA 3 7 4028800200013 ANG DATA ERR-T 4028800200014 ADEG MB/SR MB/SR 4028800200015 4.7000E+01 1.9600E+02 2.6000E+01 4028800200016 5.4000E+01 1.4800E+02 1.6000E+01 4028800200017 6.6000E+01 7.0000E+01 9.0000E+00 4028800200018 7.9000E+01 3.8000E+01 4.0000E+00 4028800200019 9.3000E+01 2.0000E+01 3.0000E+00 4028800200020 1.0800E+02 2.0000E+01 4.0000E+00 4028800200021 1.3600E+02 1.2000E+01 3.0000E+00 4028800200022 ENDDATA 9 0 4028800200023 ENDSUBENT 22 0 4028800299999 SUBENT 40288003 20151217 41734028800300001 BIB 3 10 4028800300002 REACTION (82-PB-207(N,EL)82-PB-207,,DA) 4028800300003 Dif. elas. scat. c-s. 4028800300004 SAMPLE (82-PB-207,ENR=0.814) Cylinder with diameter 4.4 cm, 4028800300005 length 2.55 cm, weight 438.5 g. 4028800300006 Pb-207 enrichment is 81.4%. 4028800300007 ANALYSIS 15.3% impurity of Pb-208 was taken into account. 4028800300008 Small contribution of inelastically scattered neutron 4028800300009 as result of excitation of levels with energy ~0.6 MeV 4028800300010 could not separated, but it was assumed to be 4028800300011 negligible . 4028800300012 ENDBIB 10 0 4028800300013 NOCOMMON 0 0 4028800300014 DATA 3 5 4028800300015 ANG DATA ERR-T 4028800300016 ADEG MB/SR MB/SR 4028800300017 5.4000E+01 1.3700E+02 1.5000E+01 4028800300018 6.6000E+01 7.0000E+01 1.0000E+01 4028800300019 7.3000E+01 5.2000E+01 8.0000E+00 4028800300020 7.9000E+01 4.0000E+01 6.0000E+00 4028800300021 9.3000E+01 1.9000E+01 3.0000E+00 4028800300022 ENDDATA 7 0 4028800300023 ENDSUBENT 22 0 4028800399999 SUBENT 40288004 20151217 41734028800400001 BIB 3 7 4028800400002 REACTION (82-PB-208(N,EL)82-PB-208,,DA) 4028800400003 Dif. elas. scat. c-s. 4028800400004 SAMPLE (82-PB-208,ENR=0.982) Cylinder with diameter 4.4 cm, 4028800400005 length 2.78 cm, weight 478 g. 4028800400006 Pb-208 enrichment is 98.2%. 4028800400007 ANALYSIS Inelastic peak due to first exc. level of 2.6 MeV was 4028800400008 easily separated from ground state. 4028800400009 ENDBIB 7 0 4028800400010 NOCOMMON 0 0 4028800400011 DATA 3 12 4028800400012 ANG DATA ERR-T 4028800400013 ADEG MB/SR MB/SR 4028800400014 4.7000E+01 2.2400E+02 2.9000E+01 4028800400015 5.4000E+01 1.5500E+02 1.6000E+01 4028800400016 6.6000E+01 7.4000E+01 8.0000E+00 4028800400017 7.3000E+01 5.5000E+01 9.0000E+00 4028800400018 7.9000E+01 3.9000E+01 6.0000E+00 4028800400019 8.6000E+01 3.0000E+01 6.0000E+00 4028800400020 9.3000E+01 1.8000E+01 2.0000E+00 4028800400021 1.0000E+02 2.1000E+01 5.0000E+00 4028800400022 1.0800E+02 1.7000E+01 4.0000E+00 4028800400023 1.1400E+02 1.5000E+01 4.0000E+00 4028800400024 1.1900E+02 1.4000E+01 3.0000E+00 4028800400025 1.3600E+02 1.1000E+01 3.0000E+00 4028800400026 ENDDATA 14 0 4028800400027 ENDSUBENT 26 0 4028800499999 ENDENTRY 4 0 4028899999999