ENTRY 23735 20210308 22972373500000001 SUBENT 23735001 20210308 22972373500100001 BIB 12 31 2373500100002 TITLE Determination of the 32S(nth,a)29Si and 33S(nth,a)30Si 2373500100003 reaction cross-sections 2373500100004 AUTHOR (C.Wagemans, P.D'hondt, R.Brissot) 2373500100005 INSTITUTE (2BLGGHT,2BLGMOL,2FR ILL) 2373500100006 REFERENCE (C,92KARLSR,,247,1992) 2373500100007 FACILITY (REAC,2FR ILL) ILL high flux reactor 2373500100008 INC-SOURCE (REAC) Neutron guide H22D (5E+8 thermal neutrons/cm2/s)2373500100009 SAMPLE Evaporation of sulphur onto a cooled formvar substrate 2373500100010 (49 ug/cm2) mounted on an Al frame and covered with a 2373500100011 thin formvar foil (17 ug/cm2). 2373500100012 ---------------------------------------------- 2373500100013 Sample 33S enrichment thickness (ug S/cm2) 2373500100014 ---------------------------------------------- 2373500100015 natS 0.75 13.1+/-0.7 2373500100016 natS 0.75 23.6+/-1.2 2373500100017 natS 0.75 24.1+/-1.2 2373500100018 33S 59.15 13.5+/-0.7 2373500100019 33S 59.15 38.4+/-3.3 2373500100020 33S 59.15 50.6+/-2.6 2373500100021 ---------------------------------------------- 2373500100022 DETECTOR (SIBAR) 100 um thick, 450 mm2 large surface barrier 2373500100023 detector 2373500100024 (TELES) 30 um thick, 300 mm2 large dE detector and a 2373500100025 100 um thick, 450 mm2 large E-detector in 2373500100026 anti-coincidence to reduce the background and to 2373500100027 eliminate 2.73 MeV 6Li(n,a)t tritons due to 2373500100028 impurities in the sample. 2373500100029 MONITOR (92-U-235(N,F),,SIG) 2373500100030 MONIT-REF (,R.Peelle+,C,88MITO,,1005,1988) 2373500100031 STATUS (APRVD) Approved by Cyrillus Wagemans (2021-03-12) 2373500100032 HISTORY (20210308C) 2373500100033 ENDBIB 31 0 2373500100034 COMMON 1 3 2373500100035 MONIT 2373500100036 B 2373500100037 584.3 2373500100038 ENDCOMMON 3 0 2373500100039 ENDSUBENT 38 0 2373500199999 SUBENT 23735002 20210308 22972373500200001 BIB 5 9 2373500200002 REACTION (16-S-32(N,A)14-SI-29,,SIG,,MXW) 2373500200003 SAMPLE Only natural samples were used. 2373500200004 ANALYSIS 32S(nth,a) alphas (1.34 MeV) were masked by the tail 2373500200005 of 10B(nth,a1) alphas (1.48 MeV), and hence only an 2373500200006 upper limit could be determined. 2373500200007 COMMENT By the authors: 2373500200008 The higher literature values could be due to 2373500200009 detection of 10B(n,a1) background particles. 2373500200010 STATUS (TABLE) Text (p.250) of 92KARLSR,,247,1992. 2373500200011 ENDBIB 9 0 2373500200012 NOCOMMON 0 0 2373500200013 DATA 2 1 2373500200014 KT-DUMMY DATA-MAX 2373500200015 EV MB 2373500200016 0.0253 0.5 2373500200017 ENDDATA 3 0 2373500200018 ENDSUBENT 17 0 2373500299999 SUBENT 23735003 20210308 22972373500300001 BIB 5 7 2373500300002 REACTION (16-S-33(N,A)14-SI-30,,SIG,,MXW) 2373500300003 SAMPLE All 6 samples were used. 2373500300004 COMMENT By the authors: 2373500300005 The fluctuation seen in the literature values could 2373500300006 be due to low sublimation temperature of sulphur. 2373500300007 ERR-ANALYS (DATA-ERR) No information on the source of uncertainty 2373500300008 STATUS (TABLE) Text (p.250) of 92KARLSR,,247,1992. 2373500300009 ENDBIB 7 0 2373500300010 NOCOMMON 0 0 2373500300011 DATA 3 1 2373500300012 KT-DUMMY DATA DATA-ERR 2373500300013 EV B B 2373500300014 0.0253 0.11 0.01 2373500300015 ENDDATA 3 0 2373500300016 ENDSUBENT 15 0 2373500399999 SUBENT 23735004 20210308 22972373500400001 BIB 6 8 2373500400002 REACTION (16-S-33(N,G+A)14-SI-30,SEQ/PAR,SIG,,MXW) 2373500400003 SAMPLE Events observed in enriched samples 2373500400004 EN-SEC (E,A) 2373500400005 COMMENT By Cyrillus Wagemans (2021-03-15): 2373500400006 The gamma-ray was emitted from the 34S compound 2373500400007 before alpha emission. 2373500400008 ERR-ANALYS (DATA-ERR) No information on the source of uncertainty 2373500400009 STATUS (TABLE) Text (p.251) of 92KARLSR,,247,1992. 2373500400010 ENDBIB 8 0 2373500400011 NOCOMMON 0 0 2373500400012 DATA 5 1 2373500400013 KT-DUMMY E-MIN E-MAX DATA DATA-ERR 2373500400014 EV MEV MEV MB MB 2373500400015 0.0253 2.45 2.75 0.5 0.1 2373500400016 ENDDATA 3 0 2373500400017 ENDSUBENT 16 0 2373500499999 ENDENTRY 4 0 2373599999999