ENTRY 10862 20200229 14641086200000001 SUBENT 10862001 20200229 14641086200100001 BIB 13 49 1086200100002 INSTITUTE (1USALAS,1USANMX,1USATEM) 1086200100003 REFERENCE (J,PRL,41,1341,1978) 1086200100004 (W,CARLINI,198007) 1086200100005 AUTHOR (R.Carlini,B.Dieterle,J.Donahue,C.Leavitt,T.Rupp, 1086200100006 W.Thomas,D.Wolfe,L.B.Auerbach,V.L.Highland,K.F.Johnson,1086200100007 W.K.McFarlane,J.Pratt,R.Bentley) 1086200100008 TITLE Neutron-proton forward angle elastic cross sections at 1086200100009 790-MeV 1086200100010 FACILITY (MESON,1USALAS) Los Alamos meson physics facility 1086200100011 INC-SOURCE (P-D) 800-MeV protons on liquid deuterium target 1086200100012 SAMPLE 2.5-inch diameter by 12-inch long container of liquid 1086200100013 hydrogen 1086200100014 DETECTOR Veto counter to eliminate charged particles from 1086200100015 neutron beam 1086200100016 (MWPC) Four multi-wire proportional counters 1086200100017 (TELES) Recoil telescope located at angle conjugate 1086200100018 (PROPC) Three helical proportional counters to deter- 1086200100019 mine proton orbits 1086200100020 (SCIN) Scintillation counters in proton arms to measure1086200100021 time of recoil track 1086200100022 Time of flight counter to measure neutron flux 1086200100023 (SOLST) Carbon recoil slab to change neutrons into 1086200100024 charged particles. 1086200100025 METHOD (TOF) Time-of-flight. Elastic neutrons arrive at unique1086200100026 time relative to primary beam burst from accelerator. 1086200100027 Two collimators used - primary collimator made of 1086200100028 steel with 1-inch diameter, second collimator placed 1086200100029 on scattered side of beam to prevent particles 1086200100030 produced by first collimator from reaching detectors. 1086200100031 CORRECTION Corrected for: 1086200100032 -gamma contamination in counts of number of elastic 1086200100033 neutrons 1086200100034 -ortho-para hydrogen fractions 1086200100035 -target density 1086200100036 -time of flight cuts 1086200100037 -floor scattering 1086200100038 -monitor dead time 1086200100039 -charged particles mistaken for neutrons 1086200100040 -double scattering 1086200100041 -fiducial area 1086200100042 ERR-ANALYS (ERR-T) Total uncertainties consisting of: 1086200100043 (ERR-S,1.7,3.3) Statistical errors are 1.7 to 3.3% 1086200100044 (ERR-SYS,2.7,3.3) Systematic errors are 2.7 to 3.3% 1086200100045 STATUS (TABLE) Data from Carlini, July 1980 1086200100046 HISTORY (19800519C) 1086200100047 (19800710A) Data received from author 1086200100048 (20200124A) OS. Heading changed in sub.2, updated 1086200100049 ERR-ANALYS, STATUS, converted to lower case, 1086200100050 minor BIB changes 1086200100051 ENDBIB 49 0 1086200100052 NOCOMMON 0 0 1086200100053 ENDSUBENT 52 0 1086200199999 SUBENT 10862002 20200229 14641086200200001 BIB 3 4 1086200200002 REACTION (1-H-1(N,EL)1-H-1,,DA) 1086200200003 MONITOR No information 1086200200004 HISTORY (19800710A) Data inserted 1086200200005 (20200124A) Changed DATA -> DATA-CM 1086200200006 ENDBIB 4 0 1086200200007 COMMON 1 3 1086200200008 EN 1086200200009 MEV 1086200200010 790. 1086200200011 ENDCOMMON 3 0 1086200200012 DATA 3 37 1086200200013 ANG-CM DATA-CM ERR-T 1086200200014 ADEG MB/SR MB/SR 1086200200015 0. 10.27 0.36 1086200200016 9.53 9.77 0.25 1086200200017 11.91 9.79 0.20 1086200200018 14.29 9.43 0.18 1086200200019 14.29 9.14 0.19 1086200200020 16.66 8.60 0.16 1086200200021 16.66 8.91 0.17 1086200200022 19.03 8.48 0.16 1086200200023 20.21 7.78 0.20 1086200200024 21.39 7.56 0.15 1086200200025 22.57 7.82 0.19 1086200200026 24.92 7.69 0.18 1086200200027 26.10 6.96 0.15 1086200200028 27.27 6.48 0.18 1086200200029 28.45 6.97 0.15 1086200200030 30.79 6.08 0.14 1086200200031 31.95 5.79 0.11 1086200200032 33.12 5.59 0.14 1086200200033 34.28 5.44 0.10 1086200200034 36.60 4.84 0.10 1086200200035 37.76 4.73 0.12 1086200200036 38.91 4.30 0.10 1086200200037 40.06 4.28 0.11 1086200200038 42.36 4.11 0.10 1086200200039 43.51 3.67 0.09 1086200200040 44.65 3.38 0.10 1086200200041 45.79 3.48 0.09 1086200200042 48.06 3.03 0.08 1086200200043 49.20 2.83 0.08 1086200200044 50.33 2.88 0.08 1086200200045 51.46 2.59 0.08 1086200200046 53.70 2.47 0.08 1086200200047 54.82 2.12 0.06 1086200200048 55.94 1.96 0.07 1086200200049 57.05 1.93 0.06 1086200200050 59.27 1.63 0.05 1086200200051 61.48 1.41 0.05 1086200200052 ENDDATA 39 0 1086200200053 ENDSUBENT 52 0 1086200299999 ENDENTRY 2 0 1086299999999