ENTRY O1309 20120621 O048O130900000001 SUBENT O1309001 20120621 O048O130900100001 BIB 12 48 O130900100002 TITLE Production of neptunium and plutonium tracers in O130900100003 nuclear reactions of U-236 with 21 to 60-MeV He-3-ions.O130900100004 AUTHOR (J.Aaltonen, P.Dendooven, E.A.Gromova, V.A.Jakovlev, O130900100005 W.Trzaska) O130900100006 INSTITUTE (2SF HLS) O130900100007 (2SF JYV) O130900100008 (4RUSRI) O130900100009 REFERENCE (J,RAK,43,389,2001) In Russian. O130900100010 (J,RDC,43,442,2001) In English. O130900100011 SAMPLE Targets of UO(2) were prepared by multiple thermal O130900100012 decomposition of uranium nitrate cellulose painted on O130900100013 10- and 100-mumeters thick Al-backing. The average O130900100014 thickness of the U-236 layer was about 100-mug/cm**2. O130900100015 The thickness variations were within 3%. O130900100016 ADD-RES (COMP).The results are discussed and compared with O130900100017 previous data on the other reactions yielding the same O130900100018 final products. O130900100019 (TTY-C).The calculated thick-target yields of Pu-236, O130900100020 Pu-237, Pu-238 and Np-235. O130900100021 FACILITY (CYCLO,2SF JYV) The K-130 cyclotron of the University O130900100022 of Jyvaskyla. O130900100023 METHOD (EXTB) The beam current was approximately 3 muA at O130900100024 41-MeV and 0.5 muA at 60-MeV He3 beam. O130900100025 (ACTIV) Irradiation time, 4 hours at 41-MeV and O130900100026 20-hours at 60-MeV. O130900100027 (STTA) In each irradiation six U-236 targets and O130900100028 energy-degrading Al-foils of different thickness were O130900100029 mounted in a multiple target system on two water-cooledO130900100030 Al-plates. The He-3 ion energy at each target was O130900100031 calculated from the range-energy relation-ships in Al O130900100032 and in the target materials. O130900100033 (CHSEP) O130900100034 ERR-ANALYS (EN-ERR1) The initial energy spread of the He-3 ion O130900100035 beam. O130900100036 (EN-ERR2) The energy spread in the last foil. O130900100037 COMMENT -By authors: two irradiations of U-236 targets were O130900100038 performed with 43- and 60-MeV He-3 ion beams. The O130900100039 initial energy spread of the He-3 ion beam was +-0.2- O130900100040 MeV. O130900100041 STATUS (TABLE). From V.A. Jakovlev O130900100042 (APRVD) By V.A.Jakovlev O130900100043 HISTORY (20060206C) O130900100044 (20060413A) The authors changed scanned data by data O130900100045 tables. O130900100046 (20060526A) RAD-DET in 4-th subent is corrected. O130900100047 (20060526U) Last checking has been done. O130900100048 (20120621U) SD: Title of the journal in ref. was O130900100049 changed (SRA -> RDC) O130900100050 ENDBIB 48 0 O130900100051 COMMON 2 3 O130900100052 EN-ERR1 EN-ERR2 O130900100053 MEV MEV O130900100054 0.1 0.6 O130900100055 ENDCOMMON 3 0 O130900100056 ENDSUBENT 55 0 O130900199999 SUBENT O1309002 20060526 O026O130900200001 BIB 6 11 O130900200002 REACTION (92-U-236(HE3,X)93-NP-236-M,,SIG) O130900200003 RAD-DET (92-U-236,A) O130900200004 (94-PU-236,A) O130900200005 DETECTOR (SIBAR) O130900200006 DECAY-DATA (93-NP-236-M,22.5HR) O130900200007 (94-PU-236,2.858YR,A,5753.2,1.) O130900200008 ERR-ANALYS (DATA-ERR).The uncertainty is given by authors. O130900200009 ANALYSIS (DECAY) Time dependence of the ratio of alpha peak O130900200010 counts of 236-Pu to those of 236-U was used to obtain O130900200011 independent production cross sections of Np-236-m and O130900200012 Pu-236. O130900200013 ENDBIB 11 0 O130900200014 NOCOMMON 0 0 O130900200015 DATA 3 12 O130900200016 EN DATA DATA-ERR O130900200017 MEV MB MB O130900200018 21.1 17.6 1.2 O130900200019 26.4 32.2 2.9 O130900200020 31. 37.9 3.4 O130900200021 35.1 38.8 2.9 O130900200022 38.8 36.7 4.3 O130900200023 42.3 32.1 1. O130900200024 42.4 32.9 3.9 O130900200025 46.1 28.3 1.1 O130900200026 49.6 22.9 1.1 O130900200027 53. 22.5 1.1 O130900200028 56.3 20.2 1. O130900200029 59.4 19.9 1.6 O130900200030 ENDDATA 14 0 O130900200031 ENDSUBENT 30 0 O130900299999 SUBENT O1309003 20060526 O026O130900300001 BIB 5 5 O130900300002 REACTION (92-U-236(HE3,X)94-PU-238,(CUM),SIG) O130900300003 RAD-DET (94-PU-238,A) O130900300004 DECAY-DATA (94-PU-238,87.74YR,A,5486.5,1.) O130900300005 DETECTOR (SIBAR) O130900300006 ERR-ANALYS (DATA-ERR).The uncertainty is givnn by authors. O130900300007 ENDBIB 5 0 O130900300008 NOCOMMON 0 0 O130900300009 DATA 3 5 O130900300010 EN DATA DATA-ERR O130900300011 MEV MB MB O130900300012 21.1 1.2 0.6 O130900300013 26.4 2.6 0.4 O130900300014 31. 5.2 1. O130900300015 38.8 5.6 1.4 O130900300016 56.3 4.1 0.5 O130900300017 ENDDATA 7 0 O130900300018 ENDSUBENT 17 0 O130900399999 SUBENT O1309004 20060526 O026O130900400001 BIB 6 13 O130900400002 REACTION (92-U-236(HE3,X)94-PU-236,CUM,SIG) O130900400003 RAD-DET (93-NP-236-M,B-) O130900400004 (94-PU-236,A) O130900400005 DECAY-DATA (93-NP-236-M,22.5HR,B-,537.,0.47) O130900400006 (94-PU-236,2.858YR,A,5753.2,1.) O130900400007 DETECTOR (SIBAR) Surface-barrier silicon detectors with O130900400008 sensitive areas of 200-mm**2 and an energy resolution O130900400009 of 30-KeV at 5767-KeV. O130900400010 ERR-ANALYS (DATA-ERR).The uncertainty is given by authors. O130900400011 STATUS (DEP,O1309002) The data in the SUBENT are O1309002 dataO130900400012 multiplyed by 0.47. Therefore the authors did not O130900400013 obtain direct production Pu-236 across U-236(He3,3n) O130900400014 reaction. O130900400015 ENDBIB 13 0 O130900400016 NOCOMMON 0 0 O130900400017 DATA 3 12 O130900400018 EN DATA DATA-ERR O130900400019 MEV MB MB O130900400020 21.1 8.3 0.5 O130900400021 26.4 15.1 1.4 O130900400022 31. 17.8 1.6 O130900400023 35.1 18.2 1.3 O130900400024 38.8 17.2 2. O130900400025 42.3 15.1 0.5 O130900400026 42.4 15.5 1.8 O130900400027 46.1 13.3 0.5 O130900400028 49.6 10.8 0.5 O130900400029 53. 10.6 0.5 O130900400030 56.3 9.5 0.5 O130900400031 59.4 9.3 0.8 O130900400032 ENDDATA 14 0 O130900400033 ENDSUBENT 32 0 O130900499999 SUBENT O1309005 20060526 O026O130900500001 BIB 6 13 O130900500002 REACTION (92-U-236(HE3,X)93-NP-235,CUM,SIG) Figure 3-2 O130900500003 RAD-DET (93-NP-235,XR) O130900500004 DECAY-DATA (93-NP-235,396.1D,XR,94.665,0.006,XR,98.439,0.0097) O130900500005 COMMENT -By compiler. Np-235 production is possible across O130900500006 U-236(He3,4n)Pu-235 ----electron capture-->Np-235 and O130900500007 (He3,p+3n)Np-235 reactions. O130900500008 -By authors: in order to determine the activity of O130900500009 Np-235 and Pu-237 in the irradiated uranium targets, O130900500010 neptunium and plutonium should be chemically separated O130900500011 from each other and from uranium and fission products. O130900500012 Method of extraction chromatography was used. O130900500013 DETECTOR (GELI,HPGE) O130900500014 ERR-ANALYS (DATA-ERR).The uncertainty is rgiven by authors. O130900500015 ENDBIB 13 0 O130900500016 NOCOMMON 0 0 O130900500017 DATA 3 6 O130900500018 EN DATA DATA-ERR O130900500019 MEV MB MB O130900500020 21.1 4.9 1.6 O130900500021 26.4 9.7 2.5 O130900500022 31. 15.3 3.9 O130900500023 35.1 18.3 3.8 O130900500024 38.8 22.8 4.5 O130900500025 42.4 18.8 4.8 O130900500026 ENDDATA 8 0 O130900500027 ENDSUBENT 26 0 O130900599999 SUBENT O1309006 20060526 O026O130900600001 BIB 6 11 O130900600002 REACTION (92-U-236(HE3,2N)94-PU-237,,SIG) Figure 5. O130900600003 RAD-DET (94-PU-237,XR) O130900600004 DECAY-DATA (94-PU-237,45.2D,XR,97.08,0.13,XR,101.07,0.21) O130900600005 COMMENT -By authors: in order to determine the activity of O130900600006 Np-235 and Pu-237 in the irradiated uranium targets, O130900600007 neptunium and plutonium should be chemically separated O130900600008 from each other and from uranium and fission products. O130900600009 Method of extraction chromatography was used. O130900600010 DETECTOR (GELI,HPGE) O130900600011 ERR-ANALYS (DATA-ERR).The uncertainty is given by authors on O130900600012 figure. An analysis is not given. O130900600013 ENDBIB 11 0 O130900600014 NOCOMMON 0 0 O130900600015 DATA 3 10 O130900600016 EN DATA DATA-ERR O130900600017 MEV MB MB O130900600018 21.1 0.18 0.02 O130900600019 26.4 0.3 0.03 O130900600020 31. 0.35 0.04 O130900600021 35.1 0.4 0.04 O130900600022 38.8 0.41 0.06 O130900600023 42.3 0.35 0.05 O130900600024 46.1 0.31 0.04 O130900600025 53. 0.29 0.05 O130900600026 56.3 0.24 0.04 O130900600027 59.4 0.18 0.04 O130900600028 ENDDATA 12 0 O130900600029 ENDSUBENT 28 0 O130900699999 ENDENTRY 6 0 O130999999999