ENTRY 30748 20090906 31403074800000001 SUBENT 30748001 20090906 31403074800100001 BIB 13 29 3074800100002 TITLE Thermal neutron cross section and transport properties 3074800100003 of polyethylene 3074800100004 AUTHOR (J.R.Granada,J.Dawidowski,R.E.Mayer,V.H.Gillette) 3074800100005 INSTITUTE (3ARGCAB) 3074800100006 REFERENCE (J,NIM/A,261,573,198711) 3074800100007 (W,DAWIDOWSKI,19870513) Numerical data 3074800100008 SAMPLE Low density polyethylene (0.92 g/cm3) of about 53 % 3074800100009 cristallinity. Two samples, 1.8 and 0.9 mm thick. 3074800100010 FACILITY (LINAC,3ARGCAB) Pulsed 25 MeV electron linear 3074800100011 accelerator 3074800100012 INC-SOURCE A lead target was located inside a thick 3074800100013 paraffin-moderator 3074800100014 METHOD (TRN) Transmission measurements. 3074800100015 (TOF) Flight path = 17.88 m. 3074800100016 Sample-in sample-out method was used 3074800100017 DETECTOR (HE3SP) Seven He-3 counters,each of 2.5 cm diam. and 3074800100018 15 cm active length,with 10 atm filling gas 3074800100019 pressure. 3074800100020 CORRECTION Data were corrected for dead time of detectors and 3074800100021 electronics, and the corresponding backgrounds 3074800100022 substracted from the sample and open beam spectra. 3074800100023 Corrections for in-scattering and multiple scattering 3074800100024 were calculated to be negligible. 3074800100025 ERR-ANALYS (DATA-ERR) Quoted errors due to uncertainty of 3074800100026 thickness and statistics. 3074800100027 STATUS (TABLE) Data taken from priv.comm.Dawidowski 13.05.19873074800100028 HISTORY (19870915C) DG.- 3074800100029 (19880122A) DG.-Reference NIM/A,261 added.- 3074800100030 (20090725A) SD:Updated to new date formats,lower case. 3074800100031 ENDBIB 29 0 3074800100032 NOCOMMON 0 0 3074800100033 ENDSUBENT 32 0 3074800199999 SUBENT 30748002 20090906 31403074800200001 BIB 2 5 3074800200002 REACTION (1-H-PLE(N,TOT),,SIG) 3074800200003 Total cross section of polyethylene at room temperature3074800200004 293+-2 degr(K) 3074800200005 ADD-RES -Diffusion constant 27015 +- 155 cm2/sec 3074800200006 -Diffusion length 2.154 +- .006 cm 3074800200007 ENDBIB 5 0 3074800200008 NOCOMMON 0 0 3074800200009 DATA 3 102 3074800200010 EN DATA DATA-ERR 3074800200011 EV B B 3074800200012 1.035E-03 223.5 9.6 3074800200013 1.161E-03 217.6 6.1 3074800200014 1.303E-03 210.5 5.2 3074800200015 1.462E-03 213.4 5.6 3074800200016 1.641E-03 209.1 4.6 3074800200017 1.841E-03 201.4 5.3 3074800200018 2.065E-03 195.0 2.8 3074800200019 2.317E-03 191.7 2.2 3074800200020 2.600E-03 183.9 2.0 3074800200021 2.917E-03 183.9 2.1 3074800200022 3.273E-03 179.7 1.7 3074800200023 3.673E-03 173.2 1.7 3074800200024 4.121E-03 172.2 1.6 3074800200025 4.624E-03 168.6 1.0 3074800200026 5.188E-03 165.1 1.4 3074800200027 5.821E-03 161.3 1.1 3074800200028 6.531E-03 158.7 0.8 3074800200029 6.918E-03 155.7 0.9 3074800200030 7.482E-03 153.1 0.8 3074800200031 8.072E-03 152.8 1.4 3074800200032 8.710E-03 149.0 0.9 3074800200033 9.419E-03 146.4 0.8 3074800200034 1.007E-02 145.0 1.0 3074800200035 1.067E-02 143.1 1.0 3074800200036 1.130E-02 140.3 0.7 3074800200037 1.197E-02 139.4 0.8 3074800200038 1.268E-02 138.2 1.0 3074800200039 1.343E-02 136.4 0.9 3074800200040 1.422E-02 135.2 0.9 3074800200041 1.507E-02 133.2 0.8 3074800200042 1.596E-02 132.9 0.7 3074800200043 1.690E-02 130.5 0.7 3074800200044 1.791E-02 128.6 0.7 3074800200045 1.897E-02 127.3 0.7 3074800200046 2.009E-02 125.8 0.7 3074800200047 2.128E-02 124.1 0.5 3074800200048 2.254E-02 121.9 0.4 3074800200049 2.388E-02 120.0 0.5 3074800200050 2.529E-02 118.6 0.5 3074800200051 2.679E-02 117.1 0.5 3074800200052 2.838E-02 115.2 0.5 3074800200053 3.006E-02 113.2 0.6 3074800200054 3.184E-02 111.8 0.5 3074800200055 3.373E-02 110.3 0.5 3074800200056 3.573E-02 108.5 0.5 3074800200057 3.784E-02 105.9 0.4 3074800200058 4.009E-02 104.6 0.4 3074800200059 4.246E-02 102.5 0.4 3074800200060 4.498E-02 100.9 0.4 3074800200061 4.764E-02 99.7 0.4 3074800200062 5.047E-02 97.1 0.5 3074800200063 5.346E-02 95.0 0.5 3074800200064 5.662E-02 93.3 0.4 3074800200065 5.998E-02 91.9 0.6 3074800200066 6.353E-02 89.9 0.4 3074800200067 6.73 E-02 87.8 0.4 3074800200068 7.129E-02 85.6 0.5 3074800200069 7.551E-02 83.4 0.6 3074800200070 7.998E-02 81.5 0.6 3074800200071 8.472E-02 79.6 0.3 3074800200072 8.974E-02 77.6 0.5 3074800200073 9.506E-02 75.5 0.4 3074800200074 1.007E-01 74.0 0.6 3074800200075 1.067E-01 72.1 0.4 3074800200076 1.130E-01 69.9 0.5 3074800200077 1.197E-01 68.0 0.5 3074800200078 1.268E-01 67.8 0.6 3074800200079 1.343E-01 65.8 0.5 3074800200080 1.422E-01 64.0 0.5 3074800200081 1.507E-01 63.0 0.4 3074800200082 1.596E-01 62.1 0.7 3074800200083 1.690E-01 61.1 0.9 3074800200084 1.791E-01 60.2 0.6 3074800200085 1.897E-01 60.4 0.7 3074800200086 2.010E-01 58.9 1.0 3074800200087 2.128E-01 59.2 0.6 3074800200088 2.254E-01 58.1 0.7 3074800200089 2.388E-01 57.8 0.7 3074800200090 2.529E-01 56.3 0.6 3074800200091 2.679E-01 55.8 1.1 3074800200092 2.838E-01 54.8 0.7 3074800200093 3.006E-01 53.1 0.6 3074800200094 3.273E-01 52.0 0.7 3074800200095 3.673E-01 51.3 0.5 3074800200096 4.121E-01 51.0 0.5 3074800200097 4.624E-01 50.7 0.6 3074800200098 5.188E-01 50.6 0.8 3074800200099 5.821E-01 50.4 0.6 3074800200100 6.531E-01 49.3 0.8 3074800200101 7.328E-01 49.2 0.5 3074800200102 8.222E-01 48.7 0.9 3074800200103 9.226E-01 47.4 0.7 3074800200104 1.096E-00 47.9 0.5 3074800200105 1.380E-00 46.9 0.5 3074800200106 1.738E-00 47.1 0.5 3074800200107 2.188E-00 47.6 0.5 3074800200108 2.754E-00 46.5 0.7 3074800200109 3.467E-00 46.7 0.8 3074800200110 4.227E-00 45.5 1.3 3074800200111 5.236E-00 46.5 1.0 3074800200112 6.653E-00 45.2 0.9 3074800200113 8.750E-00 46.4 0.8 3074800200114 ENDDATA 104 0 3074800200115 ENDSUBENT 114 0 3074800299999 ENDENTRY 2 0 3074899999999