ENTRY 22436 20121222 22342243600000001 SUBENT 22436001 20121222 22342243600100001 BIB 11 30 2243600100002 TITLE The stellar capture rate of 136Ba 2243600100003 AUTHOR (P.Mutti,F.Corvi,K.Athanassopulos,H.Beer) 2243600100004 INSTITUTE (2ZZZGEL) Corvi, Athanassopulos 2243600100005 (2ITYTUR) Mutti 2243600100006 (2GERKFK) Beer 2243600100007 REFERENCE (J,NP/A,621,262C,1997) 2243600100008 (S,INDC(EUR)-031,30,199706) 2243600100009 Report IRMM-NEA/NSC/DOC(97)7,30,199706 2243600100010 REL-REF (M,22442002,H.Beer+,J,AJ,474,843,1997) Experim.details 2243600100011 FACILITY (LINAC,2ZZZGEL) Lineal Accelerator GELINA 2243600100012 INC-SOURCE (PHOTO) Neutrons produced by bremsstrahlung gamma rays 2243600100013 inside the rotary U target were subsequently moderated 2243600100014 in two 4 cm thick water slabs canned in beryllium. 2243600100015 METHOD (ACTIV) 2243600100016 SAMPLE .Carbide Ba-C-O3, weight 13.76 gram, enriched to 2243600100017 92.677% of 136Ba placed at 28.41 m flight distance 2243600100018 DETECTOR (STANK) Two cylindrical C6D6-based liquid 2243600100019 scintillators 2243600100020 (IOCH) The energy dependence of the neutron flux was 2243600100021 simultaneously measured by a gas-flow ionization 2243600100022 chamber placed upstream in the beam and containing 2243600100023 two back- to- back B-10 deposits each of 2243600100024 40 mu-g/cm2 thickness. 2243600100025 HISTORY (19991220C) + + Compiled by S.M. + + 2243600100026 (20000119U) Last checking has been done. 2243600100027 (20121222A) SD: Ref. on Nucl.Phys. A621,262c was added;2243600100028 ref. INDC(EUR)-039/G -> INDC(EUR)-031. 2243600100029 Col. EN-MEAN -> KT, values were corrected in Sub.3. 2243600100030 Data were added from Nucl.Phys. A621,262c to Subent 3.2243600100031 Subent 4 was added. BIB update in all Subents. 2243600100032 ENDBIB 30 0 2243600100033 NOCOMMON 0 0 2243600100034 ENDSUBENT 33 0 2243600199999 SUBENT 22436002 20121222 22342243600200001 BIB 4 9 2243600200002 REACTION (56-BA-136(N,G),,WID,,AV) Averaged over resonances 2243600200003 STATUS (DEP,22436004) Considering only the resonances from 2243600200004 22436004 for which a firm l-assignment was given in 2243600200005 ref.(see REL-REF), authors calculated the average and 2243600200006 the standard deviation of the distribution of s- and 2243600200007 p- wave radiative widths Ggamma, respectively. 2243600200008 (TABLE) Tbl.2 from NP/A,621,262C,1997 2243600200009 REL-REF (M,13729001,P.E.Koehler+,J,PR/C,54,1463,1996) 2243600200010 ERR-ANALYS (DATA-ERR) No description 2243600200011 ENDBIB 9 0 2243600200012 COMMON 1 3 2243600200013 EN-RES-MAX 2243600200014 KEV 2243600200015 60. 2243600200016 ENDCOMMON 3 0 2243600200017 DATA 3 2 2243600200018 MOMENTUM L DATA DATA-ERR 2243600200019 NO-DIM MILLI-EV MILLI-EV 2243600200020 0. 62.6 14.8 2243600200021 1. 172. 65.5 2243600200022 ENDDATA 4 0 2243600200023 ENDSUBENT 22 0 2243600299999 SUBENT 22436003 20121222 22342243600300001 BIB 8 21 2243600300002 REACTION 1(56-BA-136(N,G)56-BA-137,,SIG,,MXW/MSC) 2243600300003 Value given in data section is avg(sigma*V)/V-therm 2243600300004 (Not partial for outgoing gamma, but contribution 2243600300005 of neutron resonance lower than 60 keV to MACS.) 2243600300006 2(56-BA-136(N,G)56-BA-137,,SIG,,MXW,DERIV) 2243600300007 ANALYSIS (INTED).Energy integrated using measured values 2243600300008 The total values of the cross section (REACTION 2) was 2243600300009 obtained by adding the contributions for E > 60 keV 2243600300010 calculated from the average values of ref. (see 2243600300011 F.Voss et al.). 2243600300012 METHOD (TOF) For neutron energy determination 2243600300013 MISC-COL (MISC) Contributions for E > 60 keV calculated from the2243600300014 average values of ref. (see F.Voss et al.). 2243600300015 REL-REF (R,22307021,F.Voss+,J,PR/C,50,2582,1994) 2243600300016 ERR-ANALYS (DATA-ERR) The given errors are basically the 2243600300017 systematic ones, relevant to data normalization and 2243600300018 E-dependence of the neutron flux. 2243600300019 STATUS (TABLE) Tbl.3 from NP/A,621,262C,1997 2243600300020 (DEP,22436004) 2243600300021 HISTORY (20121222A) SD: EN-MEAN -> KT, values were corrected. 2243600300022 BIB update. Data from NP/A,621,262C,1997 were added. 2243600300023 ENDBIB 21 0 2243600300024 NOCOMMON 0 0 2243600300025 DATA 7 10 2243600300026 KT DATA 1DATA-ERR 1DATA 2DATA-ERR 2MISC 2243600300027 MISC-ERR 2243600300028 KEV MB MB MB MB MB 2243600300029 MB 2243600300030 5. 166.3 4.9 166.3 4.9 0.0112243600300031 0.001 2243600300032 8. 123.8 4.5 124.2 4.5 0.402243600300033 0.02 2243600300034 10. 107.3 3.9 108.6 4. 1.272243600300035 0.06 2243600300036 12. 95.0 3.7 97.7 3.8 2.72243600300037 0.1 2243600300038 15. 80.9 3.3 86.2 3.6 5.42243600300039 0.3 2243600300040 20. 63.7 2.8 74.1 3.3 10.42243600300041 0.5 2243600300042 25. 51.4 2.4 66.2 3.1 14.82243600300043 0.7 2243600300044 30. 42.2 2.0 60.4 2.9 18.22243600300045 0.9 2243600300046 40. 29.8 1.5 52.0 2.6 22.22243600300047 1.1 2243600300048 50. 22.0 1.2 45.7 2.4 23.72243600300049 1.2 2243600300050 ENDDATA 24 0 2243600300051 ENDSUBENT 50 0 2243600399999 SUBENT 22436004 20121222 22342243600400001 BIB 7 41 2243600400002 REACTION (56-BA-136(N,G),,WID/STR) 2243600400003 ANALYSIS (SHAPE) The data were analysed with the R-matrix 2243600400004 shape-fitting code REFIT taking as a fixed input the 2243600400005 neutron width values Gn determined in a recent 2243600400006 transmission measurement (see P.E.Koehler et al.) 2243600400007 When a resonance was not observed in transmission, a 2243600400008 fixed value of the capture width Gn = 196 meV was 2243600400009 taken and Fn was determined. Up to 10 keV the data 2243600400010 were also analysed with the code FANAC. The results 2243600400011 for the largest s-waves were also corrected for the 2243600400012 background induced by the prompt detection of scattered2243600400013 neutrons using the table of neutron sensitivity vs 2243600400014 energy values given in ref. (see F.Corvi et al.). 2243600400015 For the resonance at E0=7229 eV, with a very large Gn, 2243600400016 this correction reduces by a factor of two the original2243600400017 value. Above 35 keV, where no more transmission data 2243600400018 exist, our capture curves were fitted using arbitrary 2243600400019 values of Gn: in view of the sample thickness used and 2243600400020 of the energy range under scrutiny, it is believed that2243600400021 such an uncertainty does not appreciably influence the 2243600400022 results. 2243600400023 REL-REF (R,13729002,P.E.Koehler+,J,PR/C,54,1463,1996) 2243600400024 (R,,F.Corvi+,P,INDC(NDS)-152L,61,1983) 2243600400025 (R,22442002,H.Beer+,J,AJ,474,843,1997) 2243600400026 MONITOR The data were normalized to silver capture at 5.19 eV 2243600400027 using the saturated resonance method. Such a 2243600400028 normalization was cross-checked by determining 2243600400029 the area of the 648 eV resonance of 138Ba which was 2243600400030 present in the sample with an abundance of 4.56%. The 2243600400031 obtained value of the capture area g*Gn*Ggamma/G = 2243600400032 = 4.89 + 0.21 meV is in excellent agreement with the 2243600400033 value 4.91 + 0.14 meV given in ref. (see H.Beer et al.)2243600400034 ERR-ANALYS (ERR-S) The given errors are only the statistical. 2243600400035 To those one should add the following relative 2243600400036 systematic contributions 2243600400037 (ERR-1) uncertainty of the normalization procedure; 2243600400038 (ERR-2,0.,3.) an error in the energy dependence of the 2243600400039 neutron flux ranging from 0 at 0.51 keV to 3% at 2243600400040 100 keV, with log(E) interpolation. 2243600400041 STATUS (TABLE) Tbl.1 from NP/A,621,262C,1997 2243600400042 HISTORY (20121222C) SD 2243600400043 ENDBIB 41 0 2243600400044 COMMON 1 3 2243600400045 ERR-1 2243600400046 PER-CENT 2243600400047 4.0 2243600400048 ENDCOMMON 3 0 2243600400049 DATA 3 184 2243600400050 EN-RES DATA ERR-S 2243600400051 KEV MILLI-EV MILLI-EV 2243600400052 0.448 3.11 0.02 2243600400053 0.510 41.16 0.05 2243600400054 0.524 3.54 0.02 2243600400055 1.638 71.92 0.27 2243600400056 2.140 71.6 3.2 2243600400057 2.300 54.84 0.37 2243600400058 2.828 127.30 0.49 2243600400059 3.413 62.39 0.57 2243600400060 3.455 60.8 11.8 2243600400061 3.546 25.17 0.31 2243600400062 4.318 48.92 0.48 2243600400063 4.704 303.4 1.6 2243600400064 4.950 108.55 0.80 2243600400065 6.129 70.2 3.6 2243600400066 6.169 105.92 0.96 2243600400067 6.645 55.59 0.72 2243600400068 7.046 43.62 0.72 2243600400069 7.229 62.3 32.9 2243600400070 7.556 145.1 1.6 2243600400071 7.750 23.34 0.78 2243600400072 8.805 94.2 1.2 2243600400073 8.914 146.5 1.7 2243600400074 9.181 17.32 0.66 2243600400075 9.970 68.8 1.8 2243600400076 10.187 128.2 1.6 2243600400077 10.257 196.9 2.1 2243600400078 10.449 75.7 1.5 2243600400079 11.032 40.3 1.2 2243600400080 11.158 50.7 1.3 2243600400081 11.695 4.5 1.0 2243600400082 11.774 53.6 1.6 2243600400083 12.302 23.5 1.2 2243600400084 12.892 131.8 2.0 2243600400085 13.160 95.5 1.9 2243600400086 13.321 191.4 2.5 2243600400087 13.771 61.6 2.5 2243600400088 13.866 11.0 1.4 2243600400089 14.555 348.3 3.8 2243600400090 15.187 74.1 2.2 2243600400091 15.618 96.6 2.3 2243600400092 16.052 13.2 1.6 2243600400093 16.148 72.5 2.2 2243600400094 16.238 56.1 2.0 2243600400095 16.990 64.3 2.3 2243600400096 17.072 176.5 3.4 2243600400097 17.309 115.0 2.7 2243600400098 17.933 69.0 2.9 2243600400099 18.044 119.1 2.9 2243600400100 18.150 9.2 1.9 2243600400101 18.288 11.8 2.0 2243600400102 18.497 179.5 3.4 2243600400103 18.678 68.3 2.7 2243600400104 18.905 79.2 2.8 2243600400105 19.217 113.6 3.1 2243600400106 19.783 438.3 5.6 2243600400107 19.931 50.2 2.8 2243600400108 20.342 51.2 3.9 2243600400109 20.403 154.7 3.8 2243600400110 20.820 58.6 3.0 2243600400111 21.352 106.7 3.1 2243600400112 21.462 58.7 3.1 2243600400113 21.599 148.6 4.5 2243600400114 21.703 9.8 1.8 2243600400115 22.085 54.1 4.3 2243600400116 22.253 198.4 7.5 2243600400117 22.300 133.7 6.8 2243600400118 22.628 94.6 4.3 2243600400119 22.979 25.6 3.4 2243600400120 23.284 72.5 4.2 2243600400121 24.152 107.7 7.6 2243600400122 24.285 164.83 0.97 2243600400123 24.705 37.7 3.5 2243600400124 24.797 116.5 7.1 2243600400125 25.267 188.3 6.6 2243600400126 25.835 58.9 4.1 2243600400127 26.524 7.9 3.1 2243600400128 26.732 80.5 4.3 2243600400129 27.284 324.7 6.2 2243600400130 27.581 90.4 5.2 2243600400131 27.719 67.6 9.2 2243600400132 27.799 194.0 10.8 2243600400133 27.866 26.7 6.8 2243600400134 28.452 163.9 6.1 2243600400135 28.615 64.7 5.3 2243600400136 28.919 353.2 6.5 2243600400137 29.313 194.7 5.8 2243600400138 29.624 90.1 10.8 2243600400139 29.696 158.2 14.2 2243600400140 30.349 216.9 6.8 2243600400141 30.562 11.6 4.1 2243600400142 31.313 323.6 26.8 2243600400143 31.503 26.4 5.1 2243600400144 31.757 18.9 5.1 2243600400145 32.361 199.74 7.3 2243600400146 32.619 60.9 5.4 2243600400147 32.803 107.7 37.5 2243600400148 32.911 274.3 27.1 2243600400149 33.001 39.1 7.0 2243600400150 33.207 53.9 5.9 2243600400151 33.541 84.4 3.0 2243600400152 33.637 185.0 18.5 2243600400153 33.947 101.2 72.6 2243600400154 34.260 262.8 9.3 2243600400155 34.555 160.3 10.7 2243600400156 34.724 32.9 5.8 2243600400157 34.939 41.4 7.4 2243600400158 35.118 139.8 6.4 2243600400159 35.301 187.5 12.7 2243600400160 35.608 53.0 7.6 2243600400161 36.003 197.8 14.9 2243600400162 36.143 133.3 23.0 2243600400163 36.331 209.3 42.5 2243600400164 36.594 33.4 9.5 2243600400165 37.579 164.8 4.8 2243600400166 37.944 222.0 8.0 2243600400167 38.651 224.0 8.0 2243600400168 38.832 120.0 3.7 2243600400169 39.055 304.4 36.6 2243600400170 39.500 316.7 3.7 2243600400171 39.782 96.4 4.4 2243600400172 40.484 70.9 8.7 2243600400173 40.858 37.9 7.7 2243600400174 41.089 27.1 8.9 2243600400175 41.210 115.1 24.7 2243600400176 41.673 67.0 19.7 2243600400177 41.794 50.7 13.4 2243600400178 41.891 37.4 15.2 2243600400179 42.333 285.6 36.5 2243600400180 42.649 177.9 20.9 2243600400181 42.943 62.7 10.5 2243600400182 43.162 147.9 21.9 2243600400183 43.617 128.4 16.9 2243600400184 43.838 117.8 15.3 2243600400185 44.098 147.0 21.1 2243600400186 44.402 43.1 9.0 2243600400187 44.862 312.1 45.6 2243600400188 45.158 45.3 9.7 2243600400189 45.579 124.2 16.8 2243600400190 45.816 156.8 21.5 2243600400191 46.136 117.1 17.9 2243600400192 46.362 107.8 15.8 2243600400193 46.577 48.1 12.6 2243600400194 46.890 93.8 14.0 2243600400195 47.198 333.5 46.0 2243600400196 47.536 102.5 16.9 2243600400197 47.704 78.6 15.2 2243600400198 47.906 43.6 10.4 2243600400199 48.204 211.4 31.2 2243600400200 48.566 123.8 20.3 2243600400201 49.403 186.7 25.0 2243600400202 49.999 366.4 45.4 2243600400203 50.491 182.9 29.9 2243600400204 50.799 182.8 21.4 2243600400205 51.090 68.8 72.4 2243600400206 51.372 230.0 22.9 2243600400207 51.557 294.6 30.1 2243600400208 51.900 236.4 121.3 2243600400209 52.335 65.7 13.3 2243600400210 52.870 170.1 54.1 2243600400211 53.059 178.1 22.1 2243600400212 53.299 87.5 19.6 2243600400213 53.527 180.3 16.9 2243600400214 53.802 133.7 53.6 2243600400215 54.181 37.7 19.2 2243600400216 54.387 264.8 37.6 2243600400217 54.530 187.4 53.4 2243600400218 54.648 235.4 49.4 2243600400219 55.061 146.5 27.5 2243600400220 55.269 96.3 17.3 2243600400221 55.816 35.8 11.6 2243600400222 56.389 84.0 41.9 2243600400223 56.521 86.3 33.8 2243600400224 56.796 140.7 40.2 2243600400225 57.207 337.8 43.8 2243600400226 57.481 49.3 13.7 2243600400227 57.829 158.1 54. 2243600400228 57.981 100.4 66.2 2243600400229 58.211 147.9 51.9 2243600400230 58.614 179.5 78.1 2243600400231 58.732 136.3 58.6 2243600400232 58.858 293.9 167.1 2243600400233 58.989 200.2 64.6 2243600400234 59.168 71.9 29.3 2243600400235 59.402 89.8 49.2 2243600400236 ENDDATA 186 0 2243600400237 ENDSUBENT 236 0 2243600499999 ENDENTRY 4 0 2243699999999