ENTRY 21460 19860205 00002146000000001 SUBENT 21460001 19860205 00002146000100001 BIB 15 40 2146000100002 INSTITUTE (2UK OXF) CLARENDON LABORATORY. 2146000100003 REFERENCE (J,NP,74,497,6512) 2146000100004 (R,WASH-1127,4,6904) COX+, PULSED NEUTRONS. 2146000100005 (C,63MANCHST,34,6309) PAPER 4.20, WYNCANK+,ABST. 2146000100006 AUTHOR (A.E.COX,S.A.R.WYNCHANK,C.H.COLLIE) 2146000100007 TITLE -THE PROTON-THERMAL NEUTRON CAPTURE CROSS SECTION.- 2146000100008 FACILITY (CCW,2UK OXF) 600 KEV COCKCROFT WALTON MACHINE. 2146000100009 INC-SOURCE (D-T ) DEUTERON-TRITIUM REACTION, 300 KEV DEUTERONS. 2146000100010 PULSED NEUTRON BEAM. 2146000100011 SAMPLE .WATER TANK. 2146000100012 METHOD .MEASUREMENT OF THE SPATIAL DISTRIBUTION OF NEUTRONS 2146000100013 IN A LARGE WATER TANK AS A FUNCTION OF TIME BY 2146000100014 DETECTING THE CAPTURE GAMMA RAYS. THE TANK WAS AN 2146000100015 OPEN CUBOID OF 1.8 M DEEP AND 2.5 M SQUARE. 2146000100016 THE INITIAL NEUTRON DISTRIBUTION IS CREATED BY A 2146000100017 PULSED NEUTRON BEAM COMING INTO THE WATER TANK. 2146000100018 DETECTOR (SCIN ) PLASTIC SCINTILLATOR, TYPE NE102 (NUCLEAR 2146000100019 ENTERPRISES LTD. EDINBURGH) WITH THERMAL NEUTRON 2146000100020 DIFFUSION PROPERTIES SIMULAR TO THOSE OF WATER. 2146000100021 (BF3 ) AS INCOMING NEUTRON FLUX MONITOR. 2146000100022 ANALYSIS .FIT OF AN EXPONENTIAL TO THE CURVE OF THE DECAYING 2146000100023 NEUTRON DENSITY. 2146000100024 PART-DET (G ) CAPTURE GAMMA RAYS. 2146000100025 STATUS (NDD ) DATA TAKEN FROM NEUDADA. 2146000100026 HISTORY (800311T) G.C. 2146000100027 (800318E) 2146000100028 (860205A) 2146000100029 (860210E) 2146000100030 CORRECTION .BACKGROUND FROM THE O-16(N,P)N-16 REACTION CAPTURE 2146000100031 GAMMA RAYS (2.2 MEV) AND FROM IMPURITIES IN THE TANK, 2146000100032 AMOUNTING TO 1-5 PERC., DRIFTS IN STABILITY OF THE 2146000100033 ELECTRONICS (ABOUT 1 PERC), DEAD TIME EFFECTS, 2146000100034 DECAY DURING AN OPEN TIME CHANNEL WIDTH. THE LAST 2146000100035 THREE CORRECTIONS YIELDED TOGETHER ONLY A 0.5 2146000100036 CORRECTION. THE NEUTRON ABSORPTION BY THE NEUTRON 2146000100037 BEAM TUBE WAS NEGLIGIBLE. 2146000100038 ERR-ANALYS .COMPOUNDED FROM THE ERROR OF THE LEAST SQUARES FIT 2146000100039 TO THE NEUTRON DECAY CURVE, AND INDIVIDUAL ERRORS 2146000100040 IN THE QUANTITIES WHICH LEAD TO THE INTEGRATED 2146000100041 NEUTRON FLUX IN THE TANK. 2146000100042 ENDBIB 40 0 2146000100043 NOCOMMON 0 0 2146000100044 ENDSUBENT 43 0 2146000199999 SUBENT 21460002 19860325 00002146000200001 BIB 4 8 2146000200002 REACTION (1-H-1(N,G)1-H-2,,SIG) 2200M/S CROSS SECTION VALUE 2146000200003 INC-SPECT NEUTRONS SLOWED DOWN IN THE WATER TANK. 2146000200004 STATUS (NDD ) DATA TAKEN FROM NEUDADA. 2146000200005 HISTORY (800311T) G.C. 2146000200006 (800318E) 2146000200007 (850726U) IF. CHANGE OF THE REACTION CODE FROM 2146000200008 MXW SPECTRUM TO 2200M/S VALUE 2146000200009 (860210E) 2146000200010 ENDBIB 8 0 2146000200011 NOCOMMON 0 0 2146000200012 DATA 3 1 2146000200013 EN DATA DATA-ERR 2146000200014 EV MB MB 2146000200015 2.5300E-02 3.3420E+02 5.0000E-01 2146000200016 ENDDATA 3 0 2146000200017 ENDSUBENT 16 0 2146000299999 ENDENTRY 2 0 2146099999999