ENTRY 22735 20051220 21752273500000001 SUBENT 22735001 20051220 21752273500100001 BIB 15 31 2273500100002 TITLE DECAY OF TUNGSTEN-189. 2273500100003 AUTHOR (S.MIRZADEH,F.Y.LAMBRECHT,R.M.LAMBRECHT) 2273500100004 INSTITUTE (1USAORL) Mirzadeh, Nuclear Science and Technology 2273500100005 Division 2273500100006 (2TUKTUK) F.Y.Lambrecht, Institute of Nuclear Science, 2273500100007 Ege University,Bornova 35100 Izmir,Turkey 2273500100008 (3AULWUC) R.M.Lambrecht 2273500100009 (2BLGLVN) Experimental site - Cyclotron Research Center2273500100010 REFERENCE (J,ARI,57,637,2002) 2273500100011 FACILITY (CYCLO,2BLGLVN) 2273500100012 METHOD (GSPEC) Irradiation time 3 min. 2273500100013 DETECTOR (GE-IN) Calibrated intrinsic Ge detector, 2273500100014 crystal active volume near 100 cm3. 2273500100015 Resolution : 0.8 keV at 5.9 keV, 1.0 keV at 123 keV, 2273500100016 1.9 keV at 1332 keV. 2273500100017 INC-SOURCE (D-BE) 50 MeV deutrons on thick water-cooled Be target 2273500100018 INC-SPECT .Average energy 20 MeV 2273500100019 Neutron flux (4.8+-0.3)*1.E+11 n/(sec*cm2) 2273500100020 SAMPLE Isotopically enriched to 99.9% Os-192 metal target of 2273500100021 35 mg weight. 2273500100022 Monitor Al-27 foils of 8.0 mg weight, 99.9997% purity,2273500100023 0.13 mm thickness. 2273500100024 Os targets in small gelatin capsule together with Al 2273500100025 flux monitor were mounted on the back of Be beam stop.2273500100026 MONITOR ((MONIT)13-AL-27(N,A)11-NA-24,,SIG) For neutron flux 2273500100027 determination 2273500100028 MONIT-REF (,S.KATCOFF+,J,NIM,129,473,1975) 2273500100029 ERR-ANALYS (DATA-ERR) Errors are not specified 2273500100030 COMMENT E-mail of corresponding author: 2273500100031 mirzadehs@ornl.gov 2273500100032 HISTORY (20051220C) M.M./S.M. 2273500100033 ENDBIB 31 0 2273500100034 COMMON 2 3 2273500100035 EN-APRX MONIT 2273500100036 MEV MB 2273500100037 20. 40. 2273500100038 ENDCOMMON 3 0 2273500100039 ENDSUBENT 38 0 2273500199999 SUBENT 22735002 20051220 21752273500200001 BIB 6 14 2273500200002 REACTION (76-OS-192(N,A)74-W-189,,SIG,,,DERIV) 2273500200003 DECAY-DATA (74-W-189,8.9MIN,DG,260.4,1.00) 2273500200004 (74-W-189,9.4MIN,DG,421.7,0.764) 2273500200005 ADD-RES (DECAY) Half-life of W-189 determined in this work 2273500200006 Average HL = 9.2+-0.3 min 2273500200007 ASSUMED (ASSUM,(76-OS-192(N,3N+P)75-RE-189,,SIG)/ 2273500200008 (76-OS-192(N,A)74-W-189,,SIG)) 2273500200009 COMMENT These values were deduced through random-walk, applying2273500200010 two additional boundary conditions: 2273500200011 max. c-s of Os-192(n,p3n)Re-189 reaction is 10.+-0.5 mb2273500200012 min. c-s of Os-192(n,x)Re-189 reaction is 0.23+-0.01 mb2273500200013 STATUS From Tables 1, 2 of main reference 2273500200014 (COREL,31499002) Mirzadeh et al., RCA,77,99,1997 2273500200015 (COREL,22735003) 2273500200016 ENDBIB 14 0 2273500200017 COMMON 2 3 2273500200018 ASSUM ASSUM-ERR 2273500200019 NO-DIM NO-DIM 2273500200020 20. 5. 2273500200021 ENDCOMMON 3 0 2273500200022 DATA 2 1 2273500200023 DATA DATA-ERR 2273500200024 MB MB 2273500200025 0.49 0.20 2273500200026 ENDDATA 3 0 2273500200027 ENDSUBENT 26 0 2273500299999 SUBENT 22735003 20051220 21752273500300001 BIB 6 13 2273500300002 REACTION (76-OS-192(N,X)75-RE-189,DI,SIG,,,DERIV) 2273500300003 ASSUMED (ASSUM,(76-OS-192(N,3N+P)75-RE-189,,SIG)/ 2273500300004 (76-OS-192(N,A)74-W-189,,SIG)) 2273500300005 DECAY-DATA (75-RE-189,24.3HR,DG,216.7,, 2273500300006 DG,219.4,,DG,245.) 2273500300007 REL-REF (R,,S.KATCOFF+,J,NIM,129,473,1975) Value for ASSUM 2273500300008 ANALYSIS .These values were deduced through random-walk, 2273500300009 applying additional boundary conditions: 2273500300010 maximal c-s of Os-192(n,p3n)Re-189 reaction is 2273500300011 10.+-2. mb, minimal c-s of Os-192(n,x)Re-189 reaction 2273500300012 is 0.23+-0.01 2273500300013 STATUS .From Tables 2 of main reference 2273500300014 (COREL,22735002) 2273500300015 ENDBIB 13 0 2273500300016 COMMON 2 3 2273500300017 ASSUM ASSUM-ERR 2273500300018 NO-DIM NO-DIM 2273500300019 20. 5. 2273500300020 ENDCOMMON 3 0 2273500300021 DATA 2 1 2273500300022 DATA DATA-ERR 2273500300023 MB MB 2273500300024 9.5 1.9 2273500300025 ENDDATA 3 0 2273500300026 ENDSUBENT 25 0 2273500399999 SUBENT 22735004 20051220 21752273500400001 BIB 4 14 2273500400002 REACTION ((76-OS-192(N,3N)76-OS-190-M,DI,SIG)+ 2273500400003 (76-OS-192(N,X)76-OS-190-M,CUM,SIG)) Effective c-s 2273500400004 of Os-190m production 2273500400005 ANALYSIS .Effective cross section as sum of direct and 2273500400006 cumulative cross section 2273500400007 76-OS-192(N,P+2N)75-RE-190(Beta-)76-OS-190-M 2273500400008 DECAY-DATA (76-OS-190-M,,DG,186.3,, 2273500400009 DG,361.1,, 2273500400010 DG,502.6,, 2273500400011 DG,616.3) 2273500400012 (75-RE-189,24.3HR,DG,216.7,, 2273500400013 DG,219.4,, 2273500400014 DG,245.) 2273500400015 STATUS From Table 2, text of main reference 2273500400016 ENDBIB 14 0 2273500400017 NOCOMMON 0 0 2273500400018 DATA 2 1 2273500400019 DATA DATA-ERR 2273500400020 MB MB 2273500400021 85. 5. 2273500400022 ENDDATA 3 0 2273500400023 ENDSUBENT 22 0 2273500499999 SUBENT 22735005 20051220 21752273500500001 BIB 4 8 2273500500002 REACTION (76-OS-192(N,3N+P)75-RE-189,DI,SIG) 2273500500003 DECAY-DATA (75-RE-189,24.3HR,DG,216.7,, 2273500500004 DG,219.4,, 2273500500005 DG,245.) 2273500500006 STATUS From text of main reference 2273500500007 ANALYSIS .Data obtained from activity of Re-189 equal to 2273500500008 (7.27+-0.73)*100 dps which was calculated directly 2273500500009 from intensities and abudances of gamma-rays 2273500500010 ENDBIB 8 0 2273500500011 NOCOMMON 0 0 2273500500012 DATA 2 1 2273500500013 DATA DATA-ERR 2273500500014 MB MB 2273500500015 10. 2. 2273500500016 ENDDATA 3 0 2273500500017 ENDSUBENT 16 0 2273500599999 ENDENTRY 5 0 2273599999999