ENTRY 31426 20100220 31443142600000001 SUBENT 31426001 20100220 31443142600100001 BIB 15 35 3142600100002 TITLE Total neutron cross section of teflon between 3142600100003 0.00038 eV and 590 eV. 3142600100004 AUTHOR (G.J.Cuello,J.R.Santisteban,R.E.Mayer,J.R.Granada) 3142600100005 INSTITUTE (3ARGCAB) Centro Atomico Bariloche, CNEA, Argentina. 3142600100006 REFERENCE (J,NIM/A,357,(2-3),519,199504) 3142600100007 (R,CNEA-CAB-IT-3510,1993)Internal report 3142600100008 EXP-YEAR (1993) 3142600100009 FACILITY (LINAC,3ARGCAB) Pulsed 25 MeV electron linear 3142600100010 accelerator at the Centro Atomico Bariloche. The Linac 3142600100011 was run at 100 pps (epithermal expt.) and 3142600100012 25 pps (cold/therm. expt.),25 micro-amp average current3142600100013 INC-SOURCE Lead target + polyethylene (2 cm. thick,epitherm.expt.)3142600100014 + liquid nitrogen cooled paraffin block (cold/thermal) 3142600100015 SAMPLE (Cf2)n polymeric samples at 285 deg-K. 3142600100016 Density = (2.12 + - 0.03) g/cm 3. 3142600100017 thicknesses = (0.998 + - 0.002) cm. 3142600100018 (2.459 + - 0.002) Cm. 3142600100019 The teflon samples were supplied by Reaktorstation 3142600100020 Garching, Germany. 3142600100021 METHOD (TOF) Time of flight technique, flight paths = 17.85 m 3142600100022 (epi-thermal expt.) and 8 m (cold/thermal expt.). 3142600100023 The sample-in sample-out method was used. 3142600100024 DETECTOR (PROPC) Seven He-3 counters, each of 2.5 cm diam. and 3142600100025 15 cm active length, with 10 atm filling gas pressure. 3142600100026 PART-DET (N) Neutrons. 3142600100027 CORRECTION Performed: background, dead time and mean emission 3142600100028 time. 3142600100029 Negligible: in-scattering and multiple scattering. 3142600100030 ERR-ANALYS (ERR-S) Quoted errors due to statistics only. 3142600100031 STATUS (TABLE) Data are taken from Table 1 of the reference. 3142600100032 HISTORY (19940105C) Hw.- 3142600100033 (19940616A) Hw.- Subents 003, 004 added, common section3142600100034 moved to subent 002.- 3142600100035 (19970812A) hw.- New (main) reference added. 3142600100036 (20090730A) SD:Updated to new date formats,lower case. 3142600100037 ENDBIB 35 0 3142600100038 NOCOMMON 0 0 3142600100039 ENDSUBENT 38 0 3142600199999 SUBENT 31426002 20100220 31443142600200001 BIB 1 2 3142600200002 REACTION (6-C-CMP(N,TOT),,SIG) Teflon=(Cf2)n 3142600200003 total cross section per Cf2 unit 3142600200004 ENDBIB 2 0 3142600200005 COMMON 2 3 3142600200006 TEMP TEMP-ERR 3142600200007 K K 3142600200008 292.0 1.0 3142600200009 ENDCOMMON 3 0 3142600200010 DATA 3 125 3142600200011 EN DATA ERR-S 3142600200012 EV B B 3142600200013 3.758E-04 15.45 0.58 3142600200014 4.217E-04 15.39 0.57 3142600200015 4.732E-04 15.43 0.56 3142600200016 5.309E-04 14.48 0.55 3142600200017 5.957E-04 15.54 0.52 3142600200018 6.494E-04 15.14 0.50 3142600200019 6.879E-04 15.27 0.48 3142600200020 7.286E-04 16.76 0.46 3142600200021 7.718E-04 18.17 0.43 3142600200022 8.175E-04 21.37 0.41 3142600200023 8.66E-04 21.40 0.39 3142600200024 9.173E-04 21.75 0.37 3142600200025 9.716E-04 20.07 0.35 3142600200026 1.029E-03 19.63 0.33 3142600200027 1.09E-03 18.96 0.32 3142600200028 1.155E-03 18.46 0.31 3142600200029 1.223E-03 16.85 0.30 3142600200030 1.296E-03 17.55 0.28 3142600200031 1.372E-03 16.80 0.26 3142600200032 1.454E-03 16.18 0.24 3142600200033 1.54E-03 15.42 0.22 3142600200034 1.631E-03 15.15 0.20 3142600200035 1.728E-03 14.45 0.19 3142600200036 1.83E-03 13.91 0.18 3142600200037 1.939E-03 13.71 0.17 3142600200038 2.054E-03 12.84 0.17 3142600200039 2.175E-03 12.39 0.17 3142600200040 2.304E-03 12.07 0.16 3142600200041 2.441E-03 11.96 0.15 3142600200042 2.585E-03 11.71 0.14 3142600200043 2.738E-03 10.96 0.14 3142600200044 2.901E-03 11.29 0.14 3142600200045 3.073E-03 11.33 0.14 3142600200046 3.255E-03 12.17 0.14 3142600200047 3.447E-03 12.69 0.15 3142600200048 3.652E-03 13.13 0.15 3142600200049 3.868E-03 13.66 0.14 3142600200050 4.097E-03 13.99 0.14 3142600200051 4.34E-03 14.66 0.14 3142600200052 4.597E-03 14.63 0.14 3142600200053 4.87E-03 14.44 0.14 3142600200054 5.158E-03 14.34 0.14 3142600200055 5.464E-03 14.46 0.14 3142600200056 5.788E-03 13.98 0.13 3142600200057 6.131E-03 13.83 0.13 3142600200058 6.494E-03 13.52 0.13 3142600200059 6.879E-03 13.21 0.12 3142600200060 7.286E-03 12.87 0.12 3142600200061 7.718E-03 12.62 0.12 3142600200062 8.175E-03 12.32 0.12 3142600200063 8.66E-03 12.07 0.12 3142600200064 9.173E-03 11.72 0.12 3142600200065 9.716E-03 11.73 0.11 3142600200066 1.059E-02 11.70 0.11 3142600200067 1.189E-02 12.37 0.11 3142600200068 1.334E-02 13.20 0.11 3142600200069 1.496E-02 13.33 0.12 3142600200070 1.679E-02 13.36 0.12 3142600200071 1.884E-02 13.62 0.12 3142600200072 2.113E-02 13.63 0.13 3142600200073 2.371E-02 13.52 0.13 3142600200074 2.661E-02 13.36 0.14 3142600200075 2.985E-02 13.39 0.15 3142600200076 3.35E-02 13.24 0.15 3142600200077 3.758E-02 13.23 0.16 3142600200078 4.217E-02 13.10 0.16 3142600200079 4.732E-02 13.09 0.16 3142600200080 5.309E-02 13.07 0.16 3142600200081 5.957E-02 12.94 0.15 3142600200082 6.683E-02 12.83 0.14 3142600200083 7.499E-02 12.68 0.13 3142600200084 8.414E-02 12.6 0.12 3142600200085 9.441E-02 12.47 0.11 3142600200086 0.1122 12.39 0.10 3142600200087 0.1413 12.21 9.E-02 3142600200088 0.1778 12.09 9.E-02 3142600200089 0.2239 12.15 8.E-02 3142600200090 0.2818 12.05 8.E-02 3142600200091 0.3548 12.05 8.E-02 3142600200092 0.4467 12.03 9.E-02 3142600200093 0.5623 12.18 9.E-02 3142600200094 0.7079 11.94 9.E-02 3142600200095 0.8913 12.05 9.E-02 3142600200096 1.079 12.03 9.E-02 3142600200097 1.259 11.97 9.E-02 3142600200098 1.469 11.93 0.1 3142600200099 1.71 11.86 0.1 3142600200100 1.995 11.96 0.1 3142600200101 2.328 11.97 0.1 3142600200102 2.71 11.96 0.11 3142600200103 3.162 11.99 0.11 3142600200104 3.69 11.96 0.11 3142600200105 4.295 11.99 0.11 3142600200106 5.012 12.07 0.11 3142600200107 5.848 11.86 0.12 3142600200108 6.808 12.17 0.12 3142600200109 7.943 12.14 0.12 3142600200110 9.268 11.92 0.13 3142600200111 10.79 11.9 0.13 3142600200112 12.59 12.0 0.13 3142600200113 14.69 12.08 0.14 3142600200114 17.1 12.16 0.14 3142600200115 19.95 12.13 0.15 3142600200116 23.28 12.02 0.15 3142600200117 27.1 12.29 0.16 3142600200118 31.62 11.83 0.16 3142600200119 36.9 12.18 0.17 3142600200120 42.95 11.88 0.18 3142600200121 50.12 12.18 0.18 3142600200122 58.48 11.96 0.18 3142600200123 68.08 11.95 0.18 3142600200124 79.43 11.91 0.18 3142600200125 92.68 12.08 0.18 3142600200126 107.9 12.21 0.18 3142600200127 125.9 12.07 0.18 3142600200128 146.9 12.23 0.19 3142600200129 171. 12.06 0.19 3142600200130 199.5 11.83 0.19 3142600200131 232.8 11.95 0.20 3142600200132 271. 11.96 0.20 3142600200133 316.2 12.19 0.21 3142600200134 369. 11.70 0.22 3142600200135 429.5 11.82 0.22 3142600200136 501.2 11.78 0.23 3142600200137 584.8 11.83 0.24 3142600200138 ENDDATA 127 0 3142600200139 ENDSUBENT 138 0 3142600299999 SUBENT 31426003 20100220 31443142600300001 BIB 3 5 3142600300002 REACTION (6-C-CMP(N,THS),FA,SIG,,EPI,DERIV) Teflon=(Cf2)n 3142600300003 average free-atom scattering cross section per 3142600300004 Cf2 unit. 3142600300005 STATUS (DEP,31426002) 3142600300006 HISTORY (19940616A) HW.- Subent added.- 3142600300007 ENDBIB 5 0 3142600300008 COMMON 2 3 3142600300009 EN-MIN EN-MAX 3142600300010 EV EV 3142600300011 0.5 600. 3142600300012 ENDCOMMON 3 0 3142600300013 DATA 2 1 3142600300014 DATA ERR-S 3142600300015 B B 3142600300016 11.919 .060 3142600300017 ENDDATA 3 0 3142600300018 ENDSUBENT 17 0 3142600399999 SUBENT 31426004 20100220 31443142600400001 BIB 3 7 3142600400002 REACTION (9-F-19(N,THS)9-F-19,FA,SIG,,EPI,DERIV) Average free- 3142600400003 atom scattering cross section for fluorine, which was 3142600400004 obtained from the average free-atom cross section of 3142600400005 Cf2 and the precision value for the free-atom (nuc- 3142600400006 lear) cross section of carbon known from literature. 3142600400007 STATUS (DEP,31426003) 3142600400008 HISTORY (19940616A) HW.- Subent added.- 3142600400009 ENDBIB 7 0 3142600400010 COMMON 2 3 3142600400011 EN-MIN EN-MAX 3142600400012 EV EV 3142600400013 0.5 600. 3142600400014 ENDCOMMON 3 0 3142600400015 DATA 2 1 3142600400016 DATA ERR-S 3142600400017 B B 3142600400018 3.59 .060 3142600400019 ENDDATA 3 0 3142600400020 ENDSUBENT 19 0 3142600499999 ENDENTRY 4 0 3142699999999