ENTRY O0426 20190306 O068O042600000001 SUBENT O0426001 20190306 O068O042600100001 BIB 11 36 O042600100002 TITLE Production of Np-235 and Pu-236 for environmental O042600100003 applications. O042600100004 AUTHOR (L.F.Bellido,V.J.Robinson,H.E.Sims) O042600100005 INSTITUTE (2UK MAN,2UK HAR) O042600100006 REFERENCE (J,RCA,64,11,1994) O042600100007 SAMPLE Uranium-238 (99.9%) metallic disks,of 0.0025 and 0.005 O042600100008 cm thickness and 2.5 cm diam., were interlaced with O042600100009 aluminum and copper foils. Three aluminum foils,with O042600100010 different thickness,were always used between the O042600100011 uranium disks-the thinner one (0.0005 cm),was used to O042600100012 stop the fission products,the second one,was used to O042600100013 degrade the proton energy (with different thicknesses O042600100014 according to calculations), the last foil (0.01 cm),wasO042600100015 used as a beam monitor. Copper foils (0.005 cm) were O042600100016 also used to check the proton beam current along the O042600100017 target stack. O042600100018 DETECTOR (GE-IN,HPGE) The Np sample was counted in a Ge low O042600100019 energy photon detector and also in a Gamma High Purity O042600100020 Ge-Detector. O042600100021 (SIBAR) The plutonium fraction was counted in a siliconO042600100022 surface barrier detector. O042600100023 (SCIN) An alpha liquid scintillation detector for O042600100024 plutonium fraction. O042600100025 FACILITY (CYCLO,2UK HAR) The Variable Energy Cyclotron. O042600100026 METHOD (STTA,BCINT) O042600100027 Two irradiations were done-The first with a 37 MeV O042600100028 proton energy beam, 0.5 mu-Ampere current and 8 hours O042600100029 duration, the second one with a 56 MeV proton energy O042600100030 beam,1 mu-Ampere current and duration of 7 hours. O042600100031 (CHSEP) O042600100032 STATUS (TABLE) Tbl. 1 from Radich.Acta,64(1994)11 O042600100033 ERR-ANALYS (DATA-ERR) Any analysis is absent. O042600100034 HISTORY (19980317C) O042600100035 (19980323U) Last checking has been done. O042600100036 (20000426A) DATE is corrected O042600100037 (20190306A) SD: REACTION code corrected in all Subents.O042600100038 ENDBIB 36 0 O042600100039 NOCOMMON 0 0 O042600100040 ENDSUBENT 39 0 O042600199999 SUBENT O0426002 20190306 O068O042600200001 BIB 4 10 O042600200002 REACTION (92-U-238(P,4N)93-NP-235,,SIG) O042600200003 COMMENT /by Authors/ To obtain a very pure Np-235 sample, the O042600200004 irradiated target must be left to cool for about O042600200005 50 days after the irradiation to get rid of the Np-234,O042600200006 which emits the same X-rays as Np-235, and of the O042600200007 other short half-lived neptunium isotopes. O042600200008 The 237-Np activity will be negligible. O042600200009 DECAY-DATA (93-NP-235,396.D) Other decay-data are absent. O042600200010 HISTORY (20190306A) SD: SF5=IND deleted from REACTION code. O042600200011 Values updated according presentation in the table. O042600200012 ENDBIB 10 0 O042600200013 NOCOMMON 0 0 O042600200014 DATA 4 12 O042600200015 EN EN-ERR DATA DATA-ERR O042600200016 MEV MEV MB MB O042600200017 22.2 0.9 5.2 0.2 O042600200018 24.7 0.8 20.2 0.6 O042600200019 27.0 0.7 38.8 1.0 O042600200020 29.0 0.7 42.8 1.0 O042600200021 31.5 0.5 29.2 0.8 O042600200022 33.7 0.4 19.8 0.6 O042600200023 37.2 0.8 12.5 0.3 O042600200024 39.8 0.6 9.6 0.3 O042600200025 44.7 0.4 7.6 0.2 O042600200026 49.1 0.3 6.1 0.2 O042600200027 51.3 0.2 5.9 0.2 O042600200028 55.3 0.1 5.6 0.2 O042600200029 ENDDATA 14 0 O042600200030 ENDSUBENT 29 0 O042600299999 SUBENT O0426003 20190306 O068O042600300001 BIB 3 4 O042600300002 REACTION (92-U-238(P,3N)93-NP-236-M,,SIG) O042600300003 DECAY-DATA (93-NP-236-M,22.5HR) O042600300004 HISTORY (20190306A) SD: SF5=IND deleted from REACTION code. O042600300005 Values updated according presentation in the table. O042600300006 ENDBIB 4 0 O042600300007 NOCOMMON 0 0 O042600300008 DATA 4 14 O042600300009 EN EN-ERR DATA DATA-ERR O042600300010 MEV MEV MB MB O042600300011 16.7 1.1 23.4 1.1 O042600300012 19.6 1.0 66.6 2.6 O042600300013 22.2 0.9 64.2 2.5 O042600300014 24.7 0.8 45.5 1.9 O042600300015 27.0 0.7 25.8 1.2 O042600300016 29.0 0.7 17.3 0.6 O042600300017 31.5 0.5 16.3 0.6 O042600300018 33.7 0.4 15.8 0.6 O042600300019 37.2 0.8 13.7 0.5 O042600300020 39.8 0.6 12.9 0.5 O042600300021 44.7 0.4 10.8 0.4 O042600300022 49.1 0.3 9.7 0.3 O042600300023 51.3 0.2 9.3 0.3 O042600300024 55.3 0.1 8.8 0.3 O042600300025 ENDDATA 16 0 O042600300026 ENDSUBENT 25 0 O042600399999 SUBENT O0426004 20190306 O068O042600400001 BIB 3 4 O042600400002 REACTION (92-U-238(P,N)93-NP-238,,SIG) O042600400003 DECAY-DATA (93-NP-238,2.117D) Other decay-data are absent O042600400004 HISTORY (20190306A) SD: SF5=IND deleted from REACTION code. O042600400005 Values updated according presentation in the table. O042600400006 ENDBIB 4 0 O042600400007 NOCOMMON 0 0 O042600400008 DATA 4 3 O042600400009 EN EN-ERR DATA DATA-ERR O042600400010 MEV MEV MB MB O042600400011 27.0 0.7 7.3 0.7 O042600400012 31.5 0.5 6.9 0.7 O042600400013 33.7 0.4 6.6 0.8 O042600400014 ENDDATA 5 0 O042600400015 ENDSUBENT 14 0 O042600499999 ENDENTRY 4 0 O042699999999