ENTRY 21716 19810723 00002171600000001 SUBENT 21716001 19810723 00002171600100001 BIB 14 39 2171600100002 INSTITUTE (2BLGGHT) INSTITUTE FOR NUCLEAR SCIENCES. 2171600100003 (2BLGMOL) REACTOR SITE. 2171600100004 REFERENCE (J,JIN,35,389,72) FULL REPORT. 2171600100005 AUTHOR (J.P.FRANCOIS,R.GIJBELS,J.HOSTE) 2171600100006 TITLE -THE AVERAGE CROSS SECTION OF THE RH-103(N,2N) AND 2171600100007 RH-103(N,2N)RH-102M REACTIONS IN A FISSION NEUTRON 2171600100008 SPECTRUM -. 2171600100009 FACILITY (REAC ) BR-2 REACTOR AT S.C.K. MOL. 2171600100010 INC-SOURCE (REAC ) REACTOR NEUTRONS, FLUX 6 10**12 N/CM2/SEC, FOR 2171600100011 ONE WEEK. 2171600100012 INC-SPECT .EQUIVALENT FISSION NEUTRON SPECTRUM, USING 2171600100013 THE NI-57 AND CO-58 ACTIVITIES FROM A NI-58 SAMPLE 2171600100014 AND MN-54 FROM THE MN-55(N,2N) REACTION 2171600100015 AS MONITOR. THE FAST FLUX WAS ALSO CHECKED WITH 2171600100016 AL-27(N,A) ( WITH NA-24 BURN-UP CORRECTION). 2171600100017 SAMPLE .RHODIUM SPONGE, FROM JOHNSON MATTHEY, IN AN ALUMINIUM 2171600100018 BOX. THE IRRADIATED RHODIUM WAS SEPERATED AFTER 2171600100019 IRRADIATION BY VOLATISATION IN POTASSIUM BISULPHATE 2171600100020 FUSION, THE REDUCED BY MAGNESIUM TURNINGS. 2171600100021 A RHODIUM-IRIDIUM SEPERATION WITH CALOMEL WAS DONE 2171600100022 TWICE, AND AG-110M WAS ALSO CHEMICALLY SEPERATED. 2171600100023 METHOD (ACTIV) ACTIVATION. 2171600100024 DETECTOR (GELI ) CALIBRATED GE(LI) DETECTOR. AS RH-102 DECAYS 2171600100025 BY ELECTRON CAPTURE ONLY, ANIHILATION GAMMAS WERE 2171600100026 COUNTED ASSUMING A QUANTUM EFFICIENCY OF 14.1 PERCENT 2171600100027 MONITOR (25-MN-55(N,2N)25-MN-54,,SIG,,FIS) THIS REACTION WAS 2171600100028 CHOSEN AS THE PRIMARY MONITOR SINCE THE THRESHOLD 2171600100029 ENERGY IS SIMILAR. THE VALUE FOR THE FISSION SPECTRUM 2171600100030 AVERAGE CROSS SECTION WAS TAKEN AS 0.21 MB. 2171600100031 OTHER MONITORS WERE NI-58(N,2N), AL-27(N,A)NA-24 2171600100032 AND NI-58(N,P) WITH ASSUMED VALUES FOR THE FISSION 2171600100033 AVERAGE CROSS SECTIONS OF 0.004, 0.60 AND 102 MB 2171600100034 RESPECTIVELY. 2171600100035 STATUS .TEXT, PAGE 394. 2171600100036 HISTORY (810112C) 2171600100037 (810120E) 2171600100038 ERR-ANALYS (ERR-T) THE TOTAL ERROR OF 20 PERCENT INCLUDES 2171600100039 THE UNCERTAINTY ASSOCIATED WITH POSSIBLE PERTURBATION 2171600100040 TO THE EFFECIVE FISSION SPECTRUM. 2171600100041 ENDBIB 39 0 2171600100042 COMMON 2 3 2171600100043 EN-DUMMY MONIT 2171600100044 MEV MB 2171600100045 1.5000E+00 2.1000E-01 2171600100046 ENDCOMMON 3 0 2171600100047 ENDSUBENT 46 0 2171600199999 SUBENT 21716002 19810120 00002171600200001 BIB 4 6 2171600200002 REACTION (45-RH-103(N,2N)45-RH-102-G,,SIG,,FIS) AVERAGE 2171600200003 FISSION SPECTRUM CROSS SECTION. 2171600200004 DECAY-DATA (45-RH-102-G,206.D,AR,511.,0.141) 2171600200005 STATUS .TEXT, PAGE 394. 2171600200006 HISTORY (810112C) 2171600200007 (810120E) 2171600200008 ENDBIB 6 0 2171600200009 NOCOMMON 0 0 2171600200010 DATA 2 1 2171600200011 DATA ERR-T 2171600200012 MB MB 2171600200013 6.0000E-01 1.2000E-01 2171600200014 ENDDATA 3 0 2171600200015 ENDSUBENT 14 0 2171600299999 SUBENT 21716003 19810120 00002171600300001 BIB 4 6 2171600300002 REACTION (45-RH-103(N,2N)45-RH-102-M,,SIG,,FIS) FISSION SPECTRU 2171600300003 AVERAGE CROSS SECTION. 2171600300004 DECAY-DATA (45-RH-102-M,2.9YR,DG,697.4,0.477) 2171600300005 STATUS .TEXT, PAGE 394. 2171600300006 HISTORY (810112C) 2171600300007 (810120E) 2171600300008 ENDBIB 6 0 2171600300009 NOCOMMON 0 0 2171600300010 DATA 2 1 2171600300011 DATA ERR-T 2171600300012 MB MB 2171600300013 2.4000E-01 3.0000E-02 2171600300014 ENDDATA 3 0 2171600300015 ENDSUBENT 14 0 2171600399999 ENDENTRY 3 0 2171699999999