ENTRY O0190 20001215 0000O019000000001 SUBENT O0190001 20001215 0000O019000100001 BIB 12 48 O019000100002 TITLE Formation of Isomers in the Reaction U-238(P,3N)Np-236.O019000100003 AUTHOR (J.AALTONEN,M.BRENNER,S.A.EGOROV,A.M.FRIDKIN, O019000100004 V.B.FUNSCHTEIN,E.A.GROMOVA,P.MANNGARD,V.A.RUBCHEN'A, O019000100005 YU.A.SELITSKY,V.A.YAKOVLEV,V.S.ZENKEVICH) O019000100006 INSTITUTE (2SF HLS) O019000100007 (2SF ABA) O019000100008 (4RUSRI ) O019000100009 (4RUSKUR) O019000100010 REFERENCE (J,PR/C,41,513,1990) O019000100011 HISTORY (19960311C) O019000100012 (19980609A) Some Err-Analys are Corrected. Reaction O019000100013 Lines are Corrected Too. O019000100014 (20000425A) Date is Corrected O019000100015 (20001116A) Subentries O0190002-005 are Corrected O019000100016 According to O.Schwerer'S Remarks. O019000100017 (20001215A) Subentries O0190002-003 are Corrected O019000100018 According to Vml'S Remark. O019000100019 (20001215U) Last checking has been done. O019000100020 SAMPLE Six Targets of Isotopically Pure U-238, Each with a O019000100021 Thickness of Approximately 1.5 Mg/Cm**2 Mounted in O019000100022 Sandwich on Aluminum Backings 0.1 mm Thick, were Used. O019000100023 ADD-RES (COMP).The Hauser-Feschbach Model. O019000100024 (STRUC) The Disposition Lomg- And Short-Lived Isomers O019000100025 Of 235-Np. Authors Believe That Ground State of 236-Np O019000100026 Is the Long-Lived One. O019000100027 FACILITY (CYCLO,2SF ABA) O019000100028 METHOD (BCINT) O019000100029 (ACTIV) O019000100030 (STTA) O019000100031 It was Necessary to Take Into Account the Fact That notO019000100032 Only 236-Pu But Also 238-Pu from the Reaction O019000100033 238-U(P,N)238-Np-->238-Pu Accumulated in the Target. O019000100034 Because of the Considerable Thickness of the Uranium O019000100035 Targets (1.5 MILLIGRAMM/CM**2), It was Impossible to O019000100036 Resolve the 236-Pu and 238-Pu Peaks in the Alpha O019000100037 Spectra. The Relative Ratio of the Activity of the O019000100038 Plutonium Isotopes was Obtained by Measuring the Alpha O019000100039 Spectra of the Aluminum Foils Separaiting the Uranium O019000100040 Targets During Proton Irradiation. This Method Made It O019000100041 Possible to Measure the Reaction Cross Sections of BothO019000100042 238-U(P,N)238-Np and 238-U(P,3N)236-Np-Short-Lived. O019000100043 CRITIQUE The Energies of 238-Np and 236-Np Nuclei are not Equal.O019000100044 Therefore the Ranges of Residuals are Different. It wasO019000100045 Not Excluded That the Ratio 238-Np/236-Np on Aluminum O019000100046 Foil will not be Equal this Ratio in Uranium Target. O019000100047 DETECTOR (SOLST).A Surface-Barrier Silicon Detector to Detect O019000100048 Alpha-Particles. O019000100049 STATUS (CURVE).By CAJAD. O019000100050 ENDBIB 48 0 O019000100051 NOCOMMON 0 0 O019000100052 ENDSUBENT 51 0 O019000199999 SUBENT O0190002 20001215 0000O019000200001 BIB 4 6 O019000200002 REACTION (92-U-238(P,N)93-NP-238,,SIG,,,EXP) O019000200003 RAD-DET (94-PU-238,A).This is Daughter of 93-Np-238. O019000200004 DECAY-DATA (93-NP-238,2.0D) O019000200005 (94-PU-238,90.0YR,A) O019000200006 ERR-ANALYS (ERR-T).The Uncertainty is Reported by Authors. O019000200007 (EN-ERR).Data-Point Reader Uncertainty. O019000200008 ENDBIB 6 0 O019000200009 COMMON 1 3 O019000200010 EN-ERR O019000200011 MEV O019000200012 0.4 O019000200013 ENDCOMMON 3 0 O019000200014 DATA 3 6 O019000200015 EN DATA ERR-T O019000200016 MEV MB MB O019000200017 11.9 5.5 0.5 O019000200018 13.2 6.9 0.5 O019000200019 13.8 6.4 0.5 O019000200020 15. 6.86 0.3 O019000200021 16.2 8.2 0.6 O019000200022 17.4 10.3 0.7 O019000200023 ENDDATA 8 0 O019000200024 ENDSUBENT 23 0 O019000299999 SUBENT O0190003 20001215 0000O019000300001 BIB 4 10 O019000300002 REACTION (92-U-238(P,3N)93-NP-236-M,,SIG,,,EXP) O019000300003 RAD-DET (94-PU-236,A) O019000300004 DECAY-DATA (93-NP-236-M,22.5HR) O019000300005 (94-PU-236,2.85YR,A).This is Daughter Short-Lived O019000300006 Np-236. O019000300007 ERR-ANALYS (ERR-T).The Uncertainty is Reported by Authors. O019000300008 (DATA-ERR).Data-Point Reader Uncertainty. O019000300009 (EN-ERR1).The Error in Energy As It was Given by O019000300010 Authors. O019000300011 (EN-ERR2).Data-Point Reader Uncertainty. O019000300012 ENDBIB 10 0 O019000300013 COMMON 2 3 O019000300014 EN-ERR2 DATA-ERR O019000300015 MEV PER-CENT O019000300016 0.27 12. O019000300017 ENDCOMMON 3 0 O019000300018 DATA 4 5 O019000300019 EN EN-ERR1 DATA ERR-T O019000300020 MEV MEV MB PER-CENT O019000300021 13.06 0.47 0.077 16. O019000300022 13.87 0.38 2.03 O019000300023 14.25 11.9 O019000300024 15.33 35. O019000300025 16.45 59. O019000300026 ENDDATA 7 0 O019000300027 ENDSUBENT 26 0 O019000399999 SUBENT O0190004 20001215 0000O019000400001 BIB 7 17 O019000400002 REACTION (92-U-238(P,3N)93-NP-236-G,,SIG,,,EXP) O019000400003 PART-DET (FF) O019000400004 DECAY-DATA (93-NP-236-G,1.55E+05YR) O019000400005 FACILITY (REAC,4RUSKUR).The Six Targets with the Np-236 Long- O019000400006 Lived to be Determined and Analogous Uranium Targets O019000400007 Not Subjected to Preliminary Proton Irradiation were O019000400008 Irradiated Simultaneously in the Thermal Column of the O019000400009 F-1 Reactor with a U-235 Fission Cadmium Ratio Equal O019000400010 To 600. O019000400011 DETECTOR (TRD).The Fission Fragments from Each of the Targets O019000400012 Were Registreted by Closely Superimposed Mica Track O019000400013 Detectors. O019000400014 METHOD (CHSEP) O019000400015 ERR-ANALYS (ERR-T).The Uncertainty is Reported by Authors. O019000400016 (EN-ERR1).Data-Point Reader Uncertainty. O019000400017 (EN-ERR2).The Error in Energy As It was Given by O019000400018 Authors. O019000400019 ENDBIB 17 0 O019000400020 COMMON 2 3 O019000400021 EN-ERR1 DATA-ERR O019000400022 MEV PER-CENT O019000400023 0.26 12. O019000400024 ENDCOMMON 3 0 O019000400025 DATA 4 5 O019000400026 EN EN-ERR2 DATA ERR-T O019000400027 MEV MEV MB PER-CENT O019000400028 13.8 0.45 0.74E-01 O019000400029 14.48 0.32 25. O019000400030 15.17 1.17 15. O019000400031 16.22 4.7 19. O019000400032 17.22 9.5 21. O019000400033 ENDDATA 7 0 O019000400034 ENDSUBENT 33 0 O019000499999 SUBENT O0190005 20001215 0000O019000500001 BIB 2 5 O019000500002 REACTION (92-U-238(P,3N)93-NP-236-M/G,,SIG/RAT,,,EXP) O019000500003 ERR-ANALYS (ERR-T).The Uncertainty is Reported by Authors. O019000500004 (EN-ERR1).Data-Point Reader Uncertainty. O019000500005 (EN-ERR2).The Error in Energy As It was Given by O019000500006 Authors O019000500007 ENDBIB 5 0 O019000500008 COMMON 1 3 O019000500009 EN-ERR1 O019000500010 MEV O019000500011 0.27 O019000500012 ENDCOMMON 3 0 O019000500013 DATA 4 5 O019000500014 EN EN-ERR2 DATA ERR-T O019000500015 MEV MEV NO-DIM NO-DIM O019000500016 13.88 0.46 1.2 1.2 O019000500017 14.22 0.27 6.1 1.5 O019000500018 15.32 0.27 10.9 1.2 O019000500019 16.1 0.27 6.6 0.5 O019000500020 17.24 0.27 5.8 0.5 O019000500021 ENDDATA 7 0 O019000500022 ENDSUBENT 21 0 O019000599999 ENDENTRY 5 0 O019099999999