ENTRY 22246 19970311 00002224600000001 SUBENT 22246001 19970311 00002224600100001 BIB 15 43 2224600100002 INSTITUTE (2UK HAR) 2224600100003 REFERENCE (S,INDC(NDS)-232,69,9001) MAIN REF. 2224600100004 AUTHOR (B.H.PATRICK,M.G.SOWERBY,C.G.WILFINS,L.C.RUSSEN) 2224600100005 TITLE -ACTIVATION CROSS SECTION FOR THE GENERATION OF 2224600100006 LONG-LIVED RADIONUCLIDES OF IMPORTANCE IN FUSION 2224600100007 REACTION TECHNOLOGY. 2224600100008 FACILITY .THE NEUTRON GENERATOR, RTNS-II, OF THE LAWRENCE 2224600100009 LIVERMORE NATIONAL LABORATORY WAS USED FOR THE 2224600100010 IRRADIATION OF THE SAMPLES. 2224600100011 INC-SOURCE (D-T ) A 14 MEV INTENCE NEUTRON SOURCE WAS PRODUCED 2224600100012 BY BOMBARDING A TRITIUM TARGET WITH 360 KEV 2224600100013 DEUTERONS GIVING A MAXIMUM NEUTRON ENERGY OF 15.6 MEV.2224600100014 INC-SPECT .A PACKAGE OF VARIOUS MATERIALS WAS SUBJECTED TO A 2224600100015 NEUTRON FLUENCE OF 10E18 N/CM2 OVER A PERIOD OF 2224600100016 TEN DAYS. 2224600100017 SAMPLE .THE SAMPLES CONSISTED OF ONE 15 MM DIAMETER FOIL EACH 2224600100018 OF HAFNIUM, TANTALUM, TUNGTEN, TITANIUM AND LOW 2224600100019 ACTIVATION STAINLESS STEEL, TOGETHER WITH NEUTRON 2224600100020 FLUENCE MONITOR FOILS OF NICKEL, COBALT, MANGANESE 2224600100021 AND COPPER. ALL FOILS WERE PACHAGED TOGETHER AND 2224600100022 WRAPPED IN THIN ALUMIUNIUM FOIL, FORMING A 6 MM THICK 2224600100023 PACHAGE. THERE HENCE WAS A SIGNIFICANT FLUX GRADIANT 2224600100024 BETWEEN THE FRONT AND BACK. THE PACKAGE WAS SHIPPED 2224600100025 TO THE UK FOR THE ACTIVATION ANALYSIS MEASUREMENTS. 2224600100026 METHOD (ACTIV) THE NEUTRON ACTIVATION TECHNIQUE WAS USED. 2224600100027 DETECTOR (GELI ) THE GAMMA ACTIVITY OF THE IRRADIATED SAMPLES 2224600100028 WAS MEASURED USING A GELI DETECTOR CONNECTED TO A 4K 2224600100029 MCA CONNECTED TO A VAX COMPUTER. THE ENERGY AND EFFI- 2224600100030 CIENCY CALIBRATIONS WERE CARRIED OUT USING STANDARD 2224600100031 SOURCES. 2224600100032 PART-DET (DG ) 2224600100033 MONITOR (28-NI-58(N,P)27-CO-58-G,,SIG) 2224600100034 (28-NI-58(N,N+P)27-CO-57,,SIG) 2224600100035 (28-NI-60(N,P)27-CO-60,,SIG) 2224600100036 SO FAR ONLY THE NICKEL MONITOR FOILS HAVE BEEN USED 2224600100037 IN THE ANALYSIS 2224600100038 CORRECTION .DEAD TIME CORRECTIONS WERE AUTOMATICALLY CARRIED OUT 2224600100039 DURING COUNTING. 2224600100040 STATUS .DATA TAKEN FROM MAIN REF. 2224600100041 (PRELM) 2224600100042 HISTORY (930807C) N.O. 2224600100043 (931129E) 2224600100044 (940524A) Energy inserted by NNDC 2224600100045 ENDBIB 43 0 2224600100046 COMMON 1 3 2224600100047 EN 2224600100048 MEV 2224600100049 15.4 2224600100050 ENDCOMMON 3 0 2224600100051 ENDSUBENT 50 0 2224600199999 SUBENT 22246002 19970311 00002224600200001 BIB 1 1 2224600200002 REACTION (72-HF-176(N,2N)72-HF-175,,SIG) 2224600200003 ENDBIB 1 0 2224600200004 NOCOMMON 0 0 2224600200005 DATA 2 1 2224600200006 DATA DATA-ERR 2224600200007 B B 2224600200008 1.77 0.06 2224600200009 ENDDATA 3 0 2224600200010 ENDSUBENT 9 0 2224600299999 SUBENT 22246003 19970311 00002224600300001 BIB 1 1 2224600300002 REACTION (72-HF-179(N,2N)72-HF-178-M2,,SIG) 2224600300003 ENDBIB 1 0 2224600300004 NOCOMMON 0 0 2224600300005 DATA 2 1 2224600300006 DATA DATA-ERR 2224600300007 MB MB 2224600300008 5.91 0.64 2224600300009 ENDDATA 3 0 2224600300010 ENDSUBENT 9 0 2224600399999 SUBENT 22246004 19970311 00002224600400001 BIB 1 1 2224600400002 REACTION (72-HF-180(N,2N)72-HF-179-M2,,SIG) 2224600400003 ENDBIB 1 0 2224600400004 NOCOMMON 0 0 2224600400005 DATA 2 1 2224600400006 DATA DATA-ERR 2224600400007 MB MB 2224600400008 16.7 1.9 2224600400009 ENDDATA 3 0 2224600400010 ENDSUBENT 9 0 2224600499999 SUBENT 22246005 19970311 00002224600500001 BIB 1 1 2224600500002 REACTION (72-HF-179(N,INL)72-HF-179-M2,,SIG) 2224600500003 ENDBIB 1 0 2224600500004 NOCOMMON 0 0 2224600500005 DATA 2 1 2224600500006 DATA DATA-ERR 2224600500007 MB MB 2224600500008 12.8 1.5 2224600500009 ENDDATA 3 0 2224600500010 ENDSUBENT 9 0 2224600599999 SUBENT 22246006 19970311 00002224600600001 BIB 1 1 2224600600002 REACTION (72-HF-174(N,2N)72-HF-173,,SIG) 2224600600003 ENDBIB 1 0 2224600600004 NOCOMMON 0 0 2224600600005 DATA 2 1 2224600600006 DATA DATA-ERR 2224600600007 B B 2224600600008 2.75 0.18 2224600600009 ENDDATA 3 0 2224600600010 ENDSUBENT 9 0 2224600699999 ENDENTRY 6 0 2224699999999