ENTRY 20703 20120714 22322070300000001 SUBENT 20703001 20120714 22322070300100001 BIB 15 56 2070300100002 INSTITUTE (2JPNNAG) 2070300100003 REFERENCE (J,NST,13,(7),343,197607) 2070300100004 ((P,NEANDC(J)-44L,57,1976)=(P,INDC(JAP)-30L,57,1976)) 2070300100005 abstract. 2070300100006 AUTHOR (V.Bhoraskar,S.Amemiya,K.Katoh,T.Matsui,T.Katoh) 2070300100007 TITLE Formation cross sections of zirconium-90m and 2070300100008 lead-207m with fast neutrons 2070300100009 FACILITY (VDG,2JPNNAG) 2-MeV Van de Graaff of Nagoya University.2070300100010 INC-SOURCE (D-T ) For 14.8 to 18.2 neutrons a d-t reaction 2070300100011 induced in a tritium target by the deuteron beam. 2070300100012 (D-D ) For 4.1 to 5.2-MeV neutrons a copper disc 2070300100013 coated with a thin layer of titanium served as 2070300100014 target to yield neutrons by the d-d reaction. 2070300100015 SAMPLE .Mixtures of pure (99.8%) metallic powders of natural 2070300100016 lead and zirconium in different ratios were used. 2070300100017 For such mixtures were prepared using lead and 2070300100018 zirconium in the ratios, 1:1, 1:1.25, 1:1.5 and 1:2 2070300100019 respectively. Each mixture, having weight of about 2070300100020 60 mg, was packed in a thin polyethylene bag of 2070300100021 dimensions appropriate to the total volume of about 2070300100022 28 mm3 of the mixture. 2070300100023 METHOD (ACTIV,STTA,MOMIX) The similarity between the 2070300100024 half-lives of the metastable states of Zr-90 and 2070300100025 Pb-207 is exploited in a simultaneous measurement on 2070300100026 samples where both nuclides are mixed. See details 2070300100027 in pp. 2 and 3 of J.Nucl.Sci.Techn.,13(1976)343. 2070300100028 DETECTOR (GELI ) A 55-cm3 Ge(Li) detector was used for gamma 2070300100029 ray detection 2070300100030 .Relative efficiency of detector determined from the 2070300100031 results of absolute efficiency measurements. 2070300100032 .Resolution 1.90 keV at 1.33 MeV. 2070300100033 ANALYSIS .A relation between the ratio of the formation cross 2070300100034 sections for both isotopes and the ratio of the 2070300100035 intensities of gamma-rays is established. 2070300100036 Supplementary details in pp. 2 and 3 of 2070300100037 J.Nucl.Sci.Techn.,13(1976)343.2070300100038 COMMENT .The present method allows measurement at energy 2070300100039 ranges which have not been covered by earlier 2070300100040 workers. 2070300100041 STATUS (TABLE) .Data from Tbl.1 of NSE,13,343. 2070300100042 CORRECTION .Background and self absorption negligible. 2070300100043 .Corrections of dead time variations in the neutron 2070300100044 flux and irradiation time not necessary. 2070300100045 .Progressive build-up of the activities of the 2070300100046 long lived isotopes of Pb and Zr were negligible 2070300100047 due to short irradiation time. 2070300100048 ERR-ANALYS (DATA-ERR) .Overall accuracy of about 10%, 2070300100049 no more details. 2070300100050 HISTORY (19761109C) JG. 2070300100051 (19771109E) 2070300100052 (19840106U) A.P.T. Japan code changed to JPN 2070300100053 (19840106E) 2070300100054 (20120714A) SD: Updated to new date formats,lower case.2070300100055 Corrections according last EXFOR rules and Dict.2070300100056 MONIT-REF was added to Subents 2,3; 2070300100057 REACTION code was corrected in Subent 4. 2070300100058 ENDBIB 56 0 2070300100059 NOCOMMON 0 0 2070300100060 ENDSUBENT 59 0 2070300199999 SUBENT 20703002 20120714 22322070300200001 BIB 6 9 2070300200002 REACTION (40-ZR-0(N,X)40-ZR-90-M,,SIG) 2070300200003 DECAY-DATA (40-ZR-90-M,0.80SEC,DG,2320.) 2070300200004 MONITOR (82-PB-0(N,X)82-PB-207-M,,SIG) 2070300200005 MONIT-REF (10361003,G.N.Salaita+,J,JIN,35,2139,1973) 2070300200006 DECAY-MON (82-PB-207-M,0.8SEC,DG,1060.) 2070300200007 HISTORY (19860710A)HH ISO-QUANT and standard changed 2070300200008 (19860722E) 2070300200009 (20120714A) SD: 40-ZR-90-M1 -> 40-ZR-90-M in DECAY-DATA2070300200010 SF3=NON -> X in MONITOR reaction code. 2070300200011 ENDBIB 9 0 2070300200012 COMMON 2 3 2070300200013 MONIT MONIT-ERR 2070300200014 MB MB 2070300200015 1.3100E+03 1.1600E+02 2070300200016 ENDCOMMON 3 0 2070300200017 DATA 3 1 2070300200018 EN DATA DATA-ERR 2070300200019 MEV MB MB 2070300200020 1.4800E+01 7.0000E+02 9.4000E+01 2070300200021 ENDDATA 3 0 2070300200022 ENDSUBENT 21 0 2070300299999 SUBENT 20703003 20120714 22322070300300001 BIB 5 12 2070300300002 REACTION (82-PB-207(N,INL)82-PB-207-M,,SIG,,(A)) 2070300300003 formation cross section of 1.63 MeV metastable 2070300300004 state of Pb-207. 2070300300005 MONITOR (40-ZR-90(N,INL)40-ZR-90-M,,SIG,,(A)) 2070300300006 formation cross section of 2.32 MeV metastable state 2070300300007 of Zr-90 taken from Wagner,R.T. et al. 2070300300008 Phys.Rev.,130 (1963) 1926. 2070300300009 MONIT-REF (11873002,R.T.Wagner+,J,PR,130,1926,1963) 2070300300010 DECAY-DATA (82-PB-207-M,0.80SEC) Half-life of 1.63 MeV metastable 2070300300011 state of Pb-207. 2070300300012 HISTORY (20120714A) SD: HALF-LIFE->DECAY-DATA and 82-PB-207-M1 2070300300013 ->82-PB-207-M in DECAY-DATA. COMMON deleted. 2070300300014 ENDBIB 12 0 2070300300015 NOCOMMON 0 0 2070300300016 DATA 3 5 2070300300017 EN DATA DATA-ERR 2070300300018 MEV MB MB 2070300300019 4.1000E+00 3.1600E+02 4.4000E+01 2070300300020 4.4000E+00 3.5600E+02 5.0000E+01 2070300300021 4.7000E+00 4.8200E+02 6.8000E+01 2070300300022 4.9000E+00 6.7500E+02 9.5000E+01 2070300300023 5.2000E+00 7.8800E+02 1.1000E+02 2070300300024 ENDDATA 7 0 2070300300025 ENDSUBENT 24 0 2070300399999 SUBENT 20703004 20120708 22322070300400001 BIB 3 6 2070300400002 REACTION ((82-PB-0(N,X)82-PB-207-M,,SIG)/ 2070300400003 (40-ZR-0(N,X)40-ZR-90-M,,SIG)) 2070300400004 DECAY-DATA (40-ZR-90-M,0.80SEC) 2070300400005 (82-PB-207-M,0.80SEC) 2070300400006 HISTORY (20120714A) SD: SF3: NON -> X in REACTION code 2070300400007 HALF-LIFE -> DECAY-DATA. COMMON deleted. 2070300400008 ENDBIB 6 0 2070300400009 NOCOMMON 0 0 2070300400010 DATA 2 2 2070300400011 EN DATA 2070300400012 MEV NO-DIM 2070300400013 1.4800E+01 1.8700E+00 2070300400014 1.8200E+01 2.1800E+00 2070300400015 ENDDATA 4 0 2070300400016 ENDSUBENT 15 0 2070300499999 ENDENTRY 4 0 2070399999999