ENTRY 21659 19860926 00002165900000001 SUBENT 21659001 19860926 00002165900100001 BIB 15 43 2165900100002 INSTITUTE (2SWDLND) 2165900100003 REFERENCE (J,PS,19,(3),251,79) 2165900100004 (R,LUNF-D6-3022,7809) IN NFFR SERIES. 2165900100005 AUTHOR (B.ERLANDSSON,A.MARCINKOWSKI,K.NILSON) 2165900100006 TITLE -CROSS SECTION OF RB AT 14 MEV NEUTRON ENERGY AND 2165900100007 THE DECAY OF RB. 2165900100008 FACILITY (VDG) 500 KV VAN DE GRAAF ACCELERATOR, 2165900100009 (BETAT) USED FOR THE DECAY ANALYSIS. 2165900100010 INC-SOURCE (D-T) DEUTERON BEAM OF 360 KEV ON A TRITIUM TARGET 2165900100011 (0.021 MM THICK WITH AL-BACKING) 2 MM DIAMETER 2165900100012 BEAM ALLOWED THE ASSUMPTION THAT NEUTRONS CAME 2165900100013 FROM A POINT SOURCE. THE NEUTRON BEAM HAD 2165900100014 HALF ANGLE OF 71 DEG FOR THE RB2CO3 SAMPLE AND 2165900100015 53 DEG FOR THE AL-SHEET WITH RESPECT TO 2165900100016 THE DEUTERON BEAM DIRECTION. 2165900100017 SAMPLE .NATURAL RB2CO3 POWDER PLACED IN SMALL PLEXI-GLASS 2165900100018 BOX (72.15 PC RB-85 AND 27.85 PC RB-87). 2165900100019 THE SAMPLE WAS 1.33 CM-SQ IN AREA AND 2.65 MM 2165900100020 THICK. ONE HOUR IRRADIATION WITH GAMMA-RAY 2165900100021 MEASUREMENTS STARTED 7-15 MIN AFTER IRRADIATION. 2165900100022 IN ONE METHOD THE SAMPLE WAS SANDWICHED WITH A THIN 2165900100023 AL FOIL AND PLACED AT 42 MM OF THE DETECTOR TO 2165900100024 PREVENT SUMMING. IN THE OTHER METHOD AL-POWDER 2165900100025 OR AL2O3 WAS MIXED IN KNOWN PROPORTIONS WITH RB2CO3. 2165900100026 METHOD (ACTIV) ACTIVATION METHOD COMBINED WITH THE MIXED 2165900100027 POWDER METHOD TO FIND SYSTEMATIC FAULTS. 2165900100028 DETECTOR (GELI) RESOLUTION OF 2.8 KEV FOR 1.33 MEV GAMMA-RAYS. 2165900100029 EFFICIENCY DETERMINED WITH THE AID OF A 2165900100030 88-RA-226 SOURCE. 2165900100031 ANALYSIS .SPECTRA RESULTING FROM IRRADIATION WITH THE 2165900100032 BETATRON ALLOWED TO RULE OUT THE FORMATION OF 2165900100033 BR-84 IN THIS EXPERIMENT. 2165900100034 MONITOR (13-AL-27(N,A)11-NA-24,,SIG) 0.2 MM THICK 2165900100035 AL SHEET, 15.0 MM IN DIAMETER PLACED AT ONE END 2165900100036 OF THE PLEXI-GLASS BOX HOLDING THE SAMPLE. 2165900100037 THE NEUTRON ENERGY REACHING THE AL WAS DETERMINED 2165900100038 BY AN INTEGRATION METHOD TO BE E=14.9 MEV WITH AN 2165900100039 ERROR OF 0.2 MEV. 2165900100040 STATUS .TEXT IN PS,19,3. 2165900100041 HISTORY (800828C) 2165900100042 (801015E) 2165900100043 CORRECTION .NEUTRON FLUX CORRECTED FOR FLUX VARIATIONS. 2165900100044 ERR-ANALYS .NO DETAILS GIVEN. 2165900100045 ENDBIB 43 0 2165900100046 COMMON 4 3 2165900100047 EN EN-ERR MONIT MONIT-ERR 2165900100048 MEV MEV MB MB 2165900100049 1.4800E+01 3.0000E-01 1.1200E+02 5.0000E+00 2165900100050 ENDCOMMON 3 0 2165900100051 ENDSUBENT 50 0 2165900199999 SUBENT 21659002 19801015 00002165900200001 BIB 4 6 2165900200002 REACTION (37-RB-85(N,2N)37-RB-84-M,,SIG) 2165900200003 DECAY-DATA (37-RB-84-M,20.4MIN,DG,463.,.330,DG,215.,.334, 2165900200004 DG,248.,.637) 2165900200005 STATUS .TEXT AND DECAY SCHEME IN PS,19,3. 2165900200006 HISTORY (800828C) 2165900200007 (801015E) 2165900200008 ENDBIB 6 0 2165900200009 NOCOMMON 0 0 2165900200010 DATA 2 1 2165900200011 DATA DATA-ERR 2165900200012 MB MB 2165900200013 7.0200E+02 7.7000E+01 2165900200014 ENDDATA 3 0 2165900200015 ENDSUBENT 14 0 2165900299999 SUBENT 21659003 19801015 00002165900300001 BIB 3 4 2165900300002 REACTION (37-RB-85(N,2N)37-RB-84,,SIG) 2165900300003 STATUS .TEXT AND TABLE IN PS,19,3. 2165900300004 HISTORY (800828C) 2165900300005 (801015E) 2165900300006 ENDBIB 4 0 2165900300007 NOCOMMON 0 0 2165900300008 DATA 2 1 2165900300009 DATA DATA-ERR 2165900300010 MB MB 2165900300011 1.1540E+03 1.1000E+02 2165900300012 ENDDATA 3 0 2165900300013 ENDSUBENT 12 0 2165900399999 SUBENT 21659004 19801015 00002165900400001 BIB 5 7 2165900400002 REACTION (37-RB-87(N,2N)37-RB-86,,SIG) 2165900400003 DECAY-DATA (37-RB-86-G,18.66D,DG,1078.,.088) 2165900400004 COMMENT .THE CONTRIBUTIONS FROM THE (N,GAMMA) REACTION 2165900400005 WERE ESTIMATED TO BE NEGLIGIBLE. 2165900400006 STATUS .TEXT AND TABLE IN PS,19,3. 2165900400007 HISTORY (800828C) 2165900400008 (801015E) 2165900400009 ENDBIB 7 0 2165900400010 NOCOMMON 0 0 2165900400011 DATA 2 1 2165900400012 DATA DATA-ERR 2165900400013 MB MB 2165900400014 1.2060E+03 8.5000E+01 2165900400015 ENDDATA 3 0 2165900400016 ENDSUBENT 15 0 2165900499999 SUBENT 21659005 19801015 00002165900500001 BIB 4 6 2165900500002 REACTION (37-RB-85(N,A)35-BR-82,,SIG) 2165900500003 DECAY-DATA (35-BR-82-G,,DG,554.,.705,DG,698.,.279, 2165900500004 DG,776.,.833,DG,1317.,.275) 2165900500005 STATUS .TEXT AND TABLE IN PS,19,3. 2165900500006 HISTORY (800828C) 2165900500007 (801015E) 2165900500008 ENDBIB 6 0 2165900500009 NOCOMMON 0 0 2165900500010 DATA 2 1 2165900500011 DATA DATA-ERR 2165900500012 MB MB 2165900500013 6.6300E+00 5.0000E-01 2165900500014 ENDDATA 3 0 2165900500015 ENDSUBENT 14 0 2165900599999 SUBENT 21659006 19801015 00002165900600001 BIB 4 5 2165900600002 REACTION (37-RB-85(N,P)36-KR-85-M,,SIG) 2165900600003 DECAY-DATA (36-KR-85-M,4.48HR,DG,304.,.135) 2165900600004 STATUS .TEXT AND TABLE IN PS,19,3. 2165900600005 HISTORY (800828C) 2165900600006 (801015E) 2165900600007 ENDBIB 5 0 2165900600008 NOCOMMON 0 0 2165900600009 DATA 2 1 2165900600010 DATA DATA-ERR 2165900600011 MB MB 2165900600012 5.7600E+00 4.0000E-01 2165900600013 ENDDATA 3 0 2165900600014 ENDSUBENT 13 0 2165900699999 SUBENT 21659007 19801015 00002165900700001 BIB 4 6 2165900700002 REACTION (37-RB-87(N,P)36-KR-87,,SIG) 2165900700003 DECAY-DATA (36-KR-87,76.31MIN,DG,403.,.483,DG,845.,.0725, 2165900700004 DG,2554./2557.,.129) 2165900700005 STATUS .TEXT AND TABLE IN PS,19,3. 2165900700006 HISTORY (800828C) 2165900700007 (801015E) 2165900700008 ENDBIB 6 0 2165900700009 NOCOMMON 0 0 2165900700010 DATA 2 1 2165900700011 DATA DATA-ERR 2165900700012 MB MB 2165900700013 1.2600E+01 9.0000E-01 2165900700014 ENDDATA 3 0 2165900700015 ENDSUBENT 14 0 2165900799999 ENDENTRY 7 0 2165999999999