ENTRY O0655 19990527 0000O065500000001 SUBENT O0655001 19990527 0000O065500100001 BIB 13 64 O065500100002 TITLE Fast Forward Neutron Production in the Li-7(P,N)Be-7 O065500100003 Reaction For 41- And 64-MeV Protons. O065500100004 AUTHOR (J.W.WACHTER,R.T.SANTORO,T.A.LOVE,W.ZOBEL) O065500100005 INSTITUTE (1USAORL). O065500100006 REFERENCE (J,NIM,113,185,1973) O065500100007 REL-REF (N,,R.T.SANTORO+,J,NIM,93,371,1971) Details of the O065500100008 Proton Beam Monitoring. O065500100009 (R,,J.W.WACHTER+,R,ORNL-4800,19720531) Measurement and O065500100010 Calculation of Response Functions of an Ne-213 Neutron O065500100011 Detector For 15-61.5 MeV. O065500100012 FACILITY (ISOCY,1USAORL) Oak Ridge Isochronous Cyclotron. O065500100013 SAMPLE Metallic Lithium Target, Isotopically Enriched to 99.3 O065500100014 Weight Percent Li-7, 0.3 Cm Thick, was Mounted in an O065500100015 Aluminium Frame of a 1.6-Cm Aperture. O065500100016 METHOD (EXTB,SITA) The Beam Spot Diameter in the Target was O065500100017 Less Than 1 Cm. O065500100018 (TOF) Neutron Time-Of-Flight Path of 4 Meters. O065500100019 (COINC) O065500100020 (PSD) Pulse-Shape Discrimination was Used to Reduce O065500100021 Gamma-Ray Background. O065500100022 (MOSEP) A 2-Mg/Cm2 Mylar Film Placed Upstream the O065500100023 Target, For Beam Monitoring by Detection of Scattered O065500100024 Particles. Used For the 64-MeV Run Only. O065500100025 (BCINT) Faraday Cup was Used For Absolute Calibration O065500100026 Of the Beam Monitors. O065500100027 DETECTOR 1(COIN,SCIN,SCIN) A 7.62 Cm Diameter, 7.62 Cm Long Ne- O065500100028 213 Liquid Scintillator was Positioned So That O065500100029 Neutrons Entered Along Its Axis. A 3-Mm Ne-102 Plastic O065500100030 Scintillator was Mounted in Front of the Ne-213 and O065500100031 Operated in Anti-Coincidence Mode to Veto Pulses from O065500100032 Charged Particles. For the 64-MeV Measurement, a 1.43- O065500100033 Cm Aluminium Plate was Placed 12.7 Cm in Front of the O065500100034 Detector to Get Rid of Protons Scattered from the O065500100035 Lithium Target. O065500100036 2(IOCH) An Ionization Chamber, with Total Thickness of O065500100037 101 Mg/Cm2 Aluminium Equivalent, was Placed O065500100038 Immediately Upstream the Neutron Production Target For O065500100039 Proton Beam Monitoring. This Configuration was Used O065500100040 For the 41-MeV Experiment. O065500100041 3(IOCH) The Same Chamber was Placed Aside the Primary O065500100042 Beam and Served As a Monitor Detecting Protons O065500100043 Scattered by the Thin Mylar Film, See 'Method'. This O065500100044 Configuration was Used Only For the 64-MeV Experiment. O065500100045 (SCIN) A Ne-102 Plastic Scintillator was Used For O065500100046 Proton Beam Monitoring Only For the 64-MeV Experiment. O065500100047 It was Placed Aside the Primary Beam and Detected O065500100048 Protons Scattered by the Thin Mylar Film, See O065500100049 'Method'. O065500100050 For Further Details See Rel-Ref. O065500100051 PART-DET 1(N). O065500100052 2(P) Protons of the Primary Beam. O065500100053 3(P) Protons Scattered by the Monitor Film. O065500100054 MONITOR Faraday Cup was Used For Absolute Calibration of the O065500100055 Beam Monitors Described in 'Detector'. O065500100056 CORRECTION Performed: For Neutrons Produced in the Beam Monitor O065500100057 Film, the Ionization Chamber, and the Target Frame, by O065500100058 Making Empty-Target Measurements. O065500100059 For Change of Efficiency Due to Neutron Interactions O065500100060 In the Aluminium Plate Upstream the Neutron Detector. O065500100061 Negligible: For P-N Reactions in the Aluminium Plate. O065500100062 HISTORY (19990406C) By Khlopin Radium Institute - A.P. O065500100063 (19990509A) Subentries For 40- And 60-MeV are Combined.O065500100064 (19990509U) Last checking has been done. O065500100065 (19990527A) DATE is corrected O065500100066 ENDBIB 64 0 O065500100067 COMMON 1 3 O065500100068 ANG O065500100069 ADEG O065500100070 0. O065500100071 ENDCOMMON 3 0 O065500100072 ENDSUBENT 71 0 O065500199999 SUBENT O0655002 19990527 0000O065500200001 BIB 5 11 O065500200002 REACTION (3-LI-7(P,X)0-NN-1,,DA/DE) O065500200003 EN-SEC (E,N). O065500200004 MISC-COL (MISC) A Contribution from Continuous Spectrum Under O065500200005 The High-Energy Peak Estimated by Authors. O065500200006 ERR-ANALYS (E-ERR) Data-Point Reader Uncertainty. O065500200007 (ERR-1) Quoted Sum of Systematic Uncertainties in the O065500200008 Efficiency Determination, the Total Bombardment O065500200009 Charge, and the Target Thickness. O065500200010 (ERR-2) Data-Point Reader Uncertainty. O065500200011 (ERR-S) The Statistical Errors Given in Fig.1. O065500200012 STATUS (CURVE) From Fig.1 Digitized by Compiler. O065500200013 ENDBIB 11 0 O065500200014 COMMON 3 3 O065500200015 E-ERR ERR-1 ERR-2 O065500200016 MEV PER-CENT MB/SR/MEV O065500200017 0.5 10. 0.04 O065500200018 ENDCOMMON 3 0 O065500200019 DATA 5 102 O065500200020 EN E DATA ERR-S MISC O065500200021 MEV MEV MB/SR/MEV MB/SR/MEV MB/SR/MEV O065500200022 40.6 6.45 0.125 0.016 O065500200023 40.6 7.51 0.48 0.024 O065500200024 40.6 8.51 0.62 0.026 O065500200025 40.6 9.53 0.893 0.027 O065500200026 40.6 10.59 1.13 0.028 O065500200027 40.6 11.57 1.38 0.024 O065500200028 40.6 12.54 1.524 0.021 O065500200029 40.6 13.43 1.555 0.02 O065500200030 40.6 14.38 1.559 0.029 O065500200031 40.6 15.54 1.552 0.024 O065500200032 40.6 16.6 1.541 0.023 O065500200033 40.6 17.51 1.503 0.023 O065500200034 40.6 18.51 1.479 0.023 O065500200035 40.6 19.53 1.47 0.022 O065500200036 40.6 20.52 1.451 0.022 O065500200037 40.6 21.56 1.414 0.019 O065500200038 40.6 22.52 1.319 0.022 O065500200039 40.6 23.54 1.216 0.019 O065500200040 40.6 24.53 1.134 0.021 O065500200041 40.6 25.53 1.138 0.016 1.084 O065500200042 40.6 26.57 1.341 0.018 1.029 O065500200043 40.6 27.53 1.311 0.016 0.983 O065500200044 40.6 28.52 1.437 0.017 0.939 O065500200045 40.6 29.59 1.838 0.02 0.892 O065500200046 40.6 30.52 2.213 0.018 0.849 O065500200047 40.6 31.63 2.036 0.019 0.806 O065500200048 40.6 32.56 2.232 0.021 0.758 O065500200049 40.6 33.58 2.927 0.017 0.716 O065500200050 40.6 34.53 3.421 0.021 0.667 O065500200051 40.6 35.48 3.572 0.019 0.623 O065500200052 40.6 36.5 3.543 0.019 0.58 O065500200053 40.6 37.54 3.611 0.021 0.535 O065500200054 40.6 38.47 3.113 0.021 0.492 O065500200055 40.6 39.58 2.554 0.022 0.447 O065500200056 40.6 40.62 2.409 0.021 0.403 O065500200057 40.6 41.62 2.132 0.02 0.363 O065500200058 40.6 42.55 1.473 0.018 0.317 O065500200059 40.6 43.5 0.868 0.018 0.27 O065500200060 40.6 44.48 0.238 0.016 O065500200061 40.6 45.5 0.12 0.014 O065500200062 40.6 46.54 0.043 0.018 O065500200063 63.8 10. 1.502 0.021 O065500200064 63.8 10.97 1.522 0.02 O065500200065 63.8 11.99 1.521 0.021 O065500200066 63.8 12.99 1.55 0.023 O065500200067 63.8 14.01 1.553 0.021 O065500200068 63.8 14.98 1.578 0.022 O065500200069 63.8 16. 1.601 0.022 O065500200070 63.8 17.02 1.731 0.021 O065500200071 63.8 18. 1.795 0.021 O065500200072 63.8 18.99 1.852 0.024 O065500200073 63.8 19.99 2.011 0.023 O065500200074 63.8 20.97 2.092 0.024 O065500200075 63.8 21.99 2.093 0.022 O065500200076 63.8 22.98 2.223 0.027 O065500200077 63.8 24.02 2.194 0.022 O065500200078 63.8 25.02 2.189 0.025 O065500200079 63.8 25.97 2.166 0.022 O065500200080 63.8 27.02 2.127 0.023 O065500200081 63.8 27.97 2.095 0.023 O065500200082 63.8 28.99 2.063 0.021 O065500200083 63.8 29.99 2.013 0.028 O065500200084 63.8 31.01 1.974 0.022 O065500200085 63.8 32. 1.945 0.022 O065500200086 63.8 33.02 1.935 0.022 O065500200087 63.8 33.97 1.963 0.022 O065500200088 63.8 35.02 1.948 0.021 O065500200089 63.8 35.99 1.915 0.022 O065500200090 63.8 36.97 1.884 0.023 O065500200091 63.8 38.01 1.887 0.022 O065500200092 63.8 38.98 1.863 0.022 O065500200093 63.8 40.03 1.816 0.023 O065500200094 63.8 41. 1.813 0.024 O065500200095 63.8 42. 1.773 0.026 O065500200096 63.8 43.02 1.737 0.021 O065500200097 63.8 43.97 1.69 0.025 O065500200098 63.8 44.99 1.654 0.022 O065500200099 63.8 45.99 1.553 0.026 O065500200100 63.8 46.96 1.486 0.022 O065500200101 63.8 48. 1.368 0.026 O065500200102 63.8 49. 1.289 0.024 O065500200103 63.8 50. 1.2 0.022 O065500200104 63.8 51.02 1.109 0.019 O065500200105 63.8 51.99 1.083 0.021 O065500200106 63.8 53.01 0.983 0.018 0.928 O065500200107 63.8 53.99 0.96 0.019 0.857 O065500200108 63.8 55.01 1.222 0.02 0.789 O065500200109 63.8 56. 1.469 0.02 0.712 O065500200110 63.8 57. 1.453 0.021 0.642 O065500200111 63.8 57.98 3.928 0.035 0.575 O065500200112 63.8 59. 4.601 0.038 0.501 O065500200113 63.8 59.99 4.57 0.038 0.434 O065500200114 63.8 60.97 4.93 0.038 0.364 O065500200115 63.8 61.97 4.968 0.037 0.296 O065500200116 63.8 63.01 4.915 0.039 0.226 O065500200117 63.8 64.03 2.831 0.032 0.164 O065500200118 63.8 64.98 1.56 0.027 0.147 O065500200119 63.8 65.98 1.543 0.024 0.135 O065500200120 63.8 66.97 1.326 0.027 0.132 O065500200121 63.8 68.02 0.149 0.019 O065500200122 63.8 68.99 0.149 0.018 O065500200123 63.8 69.99 0.151 0.017 O065500200124 ENDDATA 104 0 O065500200125 ENDSUBENT 124 0 O065500299999 SUBENT O0655003 19990527 0000O065500300001 BIB 7 13 O065500300002 REACTION (3-LI-7(P,X)0-NN-1,PAR,DA) O065500300003 REL-REF (A,,J.A.JUNGERMAN+,J,NIM,94,421,1971) At 39 MeV. O065500300004 ANALYSIS (INTED) Integration Over the High-Energy Neutron Peak. O065500300005 CORRECTION Performed: Subtraction of the Background Due to the O065500300006 Continuous Spectrum Under the High-Energy Peak. O065500300007 ERR-ANALYS (DATA-ERR) Quoted Error Due to Statistics and O065500300008 Systematic Uncertainties in the Efficiency O065500300009 Determination, the Total Bombardment Charge, the O065500300010 Target Thickness, and the Subtraction of the O065500300011 Background Due to the Continuous Spectrum Under the O065500300012 High-Energy Peak. O065500300013 EN-SEC (E-MIN,N) O065500300014 STATUS (TABLE) From Ref. Text. O065500300015 ENDBIB 13 0 O065500300016 NOCOMMON 0 0 O065500300017 DATA 4 2 O065500300018 EN E-MIN DATA DATA-ERR O065500300019 MEV MEV MB/SR MB/SR O065500300020 40.6 25.53 33. 6. O065500300021 63.8 53.01 36. 4. O065500300022 ENDDATA 4 0 O065500300023 ENDSUBENT 22 0 O065500399999 ENDENTRY 3 0 O065599999999