ENTRY 22748 20110214 22262274800000001 SUBENT 22748001 20110214 22262274800100001 BIB 15 55 2274800100002 TITLE .17-O(n,alpha)14C: Closure of a primordial CNO 2274800100003 Bi-cycle. 2274800100004 AUTHOR (H.Schatz,F.Kaeppeler,P.E.Koehler,M.Wiescher, 2274800100005 H.-P.Trautvetter) 2274800100006 INSTITUTE (2GERKFK) Kernforschungszentrum Karlsruhe, Institut 2274800100007 fuer Kernphysik, Karlsruhe, Germany. H.Schatz, 2274800100008 F.Kaeppeler, and experimental site. 2274800100009 (1USALAN) Los Alamos National Laboratory, Los Alamos, 2274800100010 USA. P.E.Koehler 2274800100011 (1USANOT) Department of Physics, University of Notre 2274800100012 Dame, Notre Dame, M.Wiescher 2274800100013 (2GERBOC) Institut fur Experimented Physik, Ruhr- 2274800100014 Universitaet Bochum,Bochum,Germany. H.-P.Trautvetter 2274800100015 (2GERMUN) Experimental site 2274800100016 REFERENCE (J,AJ,413,750,1993) Main reference, data are given 2274800100017 (J,PR/C,44,2788,1991) First measurements, analysis 2274800100018 and experimental details. Koeler, Graff 2274800100019 (T,SCHATZ,1992) Experimental details 2274800100020 REL-REF (I,22171001,M.Wiescher+,J,AJ,344,464,1989) 2274800100021 Experimental details. Wiescher,Steiniger, Kaeppeler 2274800100022 FACILITY (VDG,2GERKFK) 3.75 MV Van de Graaff accelerator at 2274800100023 the Forschungszentrum Karlsruhe FZKA. Beam current 2274800100024 is aprx 80 micro-Ampere 2274800100025 (REAC,2GERMUN) FRM I research reactor - for 17-O 2274800100026 atom number detection in sample 2274800100027 INC-SOURCE (P-LI7) Li target was made of evaporating metallic 2274800100028 lithium onto a water-cooled copper backing 6 mm diam.2274800100029 INC-SPECT .Neutron energies of 52, 123, 154, 198, and 225 keV 2274800100030 were obtained by varying incident proton energies 2274800100031 at 1912, 1935, 1954, 1987, 2009 keV and target thick- 2274800100032 nesses at 10.0, 2.0, 2.5, micrometer 2274800100033 PART-DET (N,A) 2274800100034 DETECTOR (SCIN,GLASD) 6-Li glass detector in the direction of 2274800100035 the proton beam axis at a distance of 88 cm from the 2274800100036 lithium target - for neutron flux monitoring 2274800100037 (IOCH) Gridded twin ionization chamber for alpha 2274800100038 particles 2274800100039 METHOD (TOF) Time-of-flight for neutron spectrum analysis 2274800100040 (STTA) Simultaneous irradiation of sample and 2274800100041 monitor 2274800100042 MONITOR ((MONIT1)8-O-17(N,A)6-C-14,,SIG) 2274800100043 ((MONIT2)79-AU-197(N,G)79-AU-198,,SIG) 2274800100044 MONIT-REF ((MONIT1),G.C.Hanna+,J,CJP,39,1784,1961) 2274800100045 ((MONIT2),F.Mughabghab+,B,NEUT.CS 1A,,1981) 2274800100046 SAMPLE .17-O sample was prepared by anodic oxidation of 2274800100047 25 micrometer thick niobium foil, O-17 content is 2274800100048 37.5%, glued in 20 micrometer thick AL foil, 2 mm diam.2274800100049 Thickness 3.7 x 10**17 and 2.4 x 10.**17 atoms/cm2 2274800100050 .Gold metallic monitor sample 30 micrometer thick, 2274800100051 2 mm diam. 2274800100052 HISTORY (20080620C) SM 2274800100053 (20110214A) SD: REACTION code in Subent 002 was changed2274800100054 8-O-18(N,A)6-C-15 => 8-O-17(N,A)6-C-14 according to 2274800100055 the article. 2274800100056 Ref.in Subent 001 on J,AJ,344,464,1989 moved to REL-REF2274800100057 ENDBIB 55 0 2274800100058 COMMON 7 6 2274800100059 EN-NRM1 EN-NRM2 MONIT1 MONIT1-ERR MONIT2 MONIT2-ERR 2274800100060 ERR-S 2274800100061 EV EV MB MB B B 2274800100062 PER-CENT 2274800100063 0.015 0.025 235. 10. 98.65 0.09 2274800100064 4. 2274800100065 ENDCOMMON 6 0 2274800100066 ENDSUBENT 65 0 2274800199999 SUBENT 22748002 20110214 22262274800200001 BIB 6 11 2274800200002 REACTION (8-O-17(N,A)6-C-14,,SIG,,SPA) Averaged over neutron 2274800200003 spectrum width 2274800200004 REL-REF (A,,P.E.Koestler+,J,PR/C,44,2788,1991) 2274800200005 CORRECTION .For detector efficiency, self-absorption of alphas 2274800200006 in sample 2274800200007 ERR-ANALYS (ERR-SYS) Systematic error 2274800200008 (ERR-S) Statistical error 2274800200009 STATUS (TABLE) From TABLE 2 of Astr.J.,413,750,1993 2274800200010 HISTORY (20110214A) SD: REACTION code was changed: 2274800200011 8-O-18(N,A)6-C-15 => 8-O-17(N,A)6-C-14 according to 2274800200012 the article. 2274800200013 ENDBIB 11 0 2274800200014 NOCOMMON 0 0 2274800200015 DATA 6 5 2274800200016 EN +EN-RSL -EN-RSL DATA ERR-S ERR-SYS 2274800200017 KEV KEV KEV MB MB MB 2274800200018 52. 28. 42. 3.0 0.15 0.30 2274800200019 123. 12.5 12.5 1.8 0.14 0.31 2274800200020 154. 14. 14. 2.0 0.16 0.18 2274800200021 198. 14.5 14.5 31. 1.6 3.1 2274800200022 225. 14.5 14.5 94. 5.1 8.6 2274800200023 ENDDATA 7 0 2274800200024 ENDSUBENT 23 0 2274800299999 SUBENT 22748003 20080620 21992274800300001 BIB 6 13 2274800300002 REACTION 1(8-O-17(N,0),,EN) Resonance energy of the compound 2274800300003 nucleus 2274800300004 2(8-O-17(N,TOT),,WID) Total width 2274800300005 3(8-O-17(N,EL),,WID) Elastic width 2274800300006 4(8-O-17(N,A),,WID) Alpha width 2274800300007 5(8-O-17(N,G),,WID) Gamma width 2274800300008 6(8-O-17(N,0),,J) Spin of resonance 2274800300009 7(8-O-17(N,0),,PTY) Parity of resonance 2274800300010 MISC-COL (MISC) Equal to (E0 - En) from TABLE 3 2274800300011 REL-REF (R,,J.GOERRES+,J,NP/A,548,414,1992) 2274800300012 ASSUMED (ASSUM,8-O-17(N,G),,WID) From REL-REF 2274800300013 ERR-ANALYS (DATA-ERR) Errors not specified 2274800300014 STATUS (TABLE) From TABLE 3 of main reference 2274800300015 ENDBIB 13 0 2274800300016 COMMON 1 3 2274800300017 MISC 2274800300018 MEV 2274800300019 8.044 2274800300020 ENDCOMMON 3 0 2274800300021 DATA 14 3 2274800300022 DATA 1DATA-ERR 1DATA 2DATA-ERR 2DATA 3DATA-ERR 32274800300023 DATA 4DATA-ERR 4DATA 5DATA-ERR 5DATA 6DATA 72274800300024 ASSUM ASSUM-ERR 2274800300025 KEV KEV KEV KEV KEV KEV 2274800300026 KEV KEV EV EV NO-DIM NO-DIM 2274800300027 EV EV 2274800300028 -7. 0.098 2274800300029 2.3 1. -1. 2274800300030 1.15 0.15 2274800300031 169. 4. 1.280 1.000 0.014 0.009 2274800300032 1.2 0.8 0.41 0.09 2. +1. 2274800300033 2274800300034 238. 3. 8.000 1.000 0.830 0.490 2274800300035 6.9 0.4 0.49 0.13 3. -1. 2274800300036 2274800300037 ENDDATA 15 0 2274800300038 ENDSUBENT 37 0 2274800399999 SUBENT 22748004 20080620 21992274800400001 BIB 6 11 2274800400002 REACTION (8-O-17(N,A)6-C-14,,SGV,,MXW,DERIV) 2274800400003 REL-REF (R,,P.E.Koehler+,J,PR/C,44,2788,1991) 2274800400004 INC-SPECT .Maxwellian 2274800400005 ANALYSIS .Averaged over Maxwell energy distribution 2274800400006 Cross section for energies below 10 keV were taken 2274800400007 from REL-REF corrected for results of the present 2274800400008 experiments 2274800400009 ERR-ANALYS .Errors not given 2274800400010 STATUS (TABLE) TABLE 4 of main reference 2274800400011 (DEP,22748002) 2274800400012 (DEP,22748003) 2274800400013 ENDBIB 11 0 2274800400014 NOCOMMON 0 0 2274800400015 DATA 2 15 2274800400016 KT-K DATA 2274800400017 K CM3/S/MOL 2274800400018 0.10E+09 6.54E+05 2274800400019 0.20E+09 5.76E+05 2274800400020 0.23E+09 5.55E+05 2274800400021 0.27E+09 5.45E+05 2274800400022 0.30E+09 5.38E+05 2274800400023 0.33E+09 7.79E+05 2274800400024 0.36E+09 9.42E+05 2274800400025 0.40E+09 1.25E+06 2274800400026 0.50E+09 3.26E+06 2274800400027 0.60E+09 5.63E+06 2274800400028 0.70E+09 8.25E+06 2274800400029 0.80E+09 1.08E+07 2274800400030 0.90E+09 1.32E+07 2274800400031 1.00E+09 1.52E+07 2274800400032 1.10E+09 1.69E+07 2274800400033 ENDDATA 17 0 2274800400034 ENDSUBENT 33 0 2274800499999 ENDENTRY 4 0 2274899999999