ENTRY 30225 20081203 31323022500000001 SUBENT 30225001 20081203 31323022500100001 BIB 12 22 3022500100002 INSTITUTE (3RUMBUC) 3022500100003 REFERENCE (R,IFA-NR-24,196601) 3022500100004 AUTHOR (V.Cojocaru,M.Nachman) 3022500100005 TITLE Gamma-ray spectra following the decay of Br-86, Br-87 3022500100006 and Br-88. 3022500100007 FACILITY (REAC) 2 MW VVR-S reactor 3022500100008 Irradiation in the thermal column. 3022500100009 SAMPLE Uranyl nitrate solution 3022500100010 METHOD Separation of bromine isotopes using a gas-flow 3022500100011 system. Absorption of bromine in a CCl4 cell. 3022500100012 DETECTOR (NAICR) Na(Tl) crystal. The resolving power of the 3022500100013 detection system was 5.6 , 8.5 and 13.1 % for 3022500100014 the 4.45 MeV Ra-Be, 0.622 MeV Cs-137 and 0.145 MeV 3022500100015 Ce-141 gamma rays, respectively. 3022500100016 PART-DET (DG) gamma rays 3022500100017 STATUS (TABLE) Data from IFA-NR-24 (1966) Table 1 and 2. 3022500100018 HISTORY (19721218T) conversion of Dastar 1020-21. 3022500100019 (20080211A) BIB section updated 3022500100020 ERR-ANALYS The energies of the gamma rays are determined with 3022500100021 errors of about 1.5 %. 3022500100022 The intensities of the gamma rays are determined with 3022500100023 errors of about 20 %. 3022500100024 ENDBIB 22 0 3022500100025 NOCOMMON 0 0 3022500100026 ENDSUBENT 25 0 3022500199999 SUBENT 30225002 20081203 31323022500200001 BIB 3 10 3022500200002 REACTION (92-U-235(N,F),,SPC,,SPA) 3022500200003 Relative gamma ray intensities 3022500200004 following the decay of Br-86 + Br-87. 3022500200005 INC-SPECT Pile spectrum 3022500200006 COMMENT To isolate the 1 min Br-86+Br-87 activity the irradia- 3022500200007 tion time was chosen sufficiently short (150 sec) to 3022500200008 avoid the accumulation of longer-lived bromine isotopes3022500200009 the irradiation was followed by a pause of about 150sec3022500200010 to allow the decay of shorter-lived bromine isotopes 3022500200011 (15.5 Sec Br-88, 4.5 Sec Br-89 and 1.6 Sec Br-90). 3022500200012 ENDBIB 10 0 3022500200013 COMMON 1 3 3022500200014 EN-DUMMY 3022500200015 EV 3022500200016 2.5300E-02 3022500200017 ENDCOMMON 3 0 3022500200018 DATA 2 8 3022500200019 E DATA 3022500200020 MEV PC/INC 3022500200021 2.2000E-01 4.1000E+01 3022500200022 4.5000E-01 5.7000E+01 3022500200023 6.1000E-01 6.7000E+01 3022500200024 7.3000E-01 3.7000E+01 3022500200025 8.4000E-01 1.0000E+02 3022500200026 9.4000E-01 5.5000E+01 3022500200027 1.2700E+00 6.3000E+01 3022500200028 1.5400E+00 2.4000E+01 3022500200029 ENDDATA 10 0 3022500200030 ENDSUBENT 29 0 3022500299999 SUBENT 30225003 20081203 31323022500300001 BIB 3 10 3022500300002 REACTION (92-U-235(N,F),,SPC,,SPA) 3022500300003 Relative gamma ray intensities 3022500300004 following the decay of Br-88. 3022500300005 INC-SPECT Pile spectrum 3022500300006 COMMENT Irradiation time 15 sec only. Counting time was 3022500300007 started after a sufficiently long waiting time to allow3022500300008 the decay of shorter lived bromine isotopes. 3022500300009 The half-life of Br-88 is 15.5 Sec. 3022500300010 For a 0.026 MeV and 0.320 MeV gamma transition only 3022500300011 the energy but no intensity given. 3022500300012 ENDBIB 10 0 3022500300013 COMMON 1 3 3022500300014 EN-DUMMY 3022500300015 EV 3022500300016 2.5300E-02 3022500300017 ENDCOMMON 3 0 3022500300018 DATA 2 9 3022500300019 E DATA 3022500300020 MEV PC/INC 3022500300021 7.5000E-02 4.2000E+01 3022500300022 1.1100E-01 1.0000E+02 3022500300023 1.7500E-01 5.7000E+01 3022500300024 2.1600E-01 9.8000E+01 3022500300025 2.8700E-01 4.3000E+01 3022500300026 3.9000E-01 1.2000E+01 3022500300027 5.2800E-01 5.0000E+01 3022500300028 7.8500E-01 3.0000E+01 3022500300029 1.0900E+00 2.3000E+01 3022500300030 ENDDATA 11 0 3022500300031 ENDSUBENT 30 0 3022500399999 ENDENTRY 3 0 3022599999999