ENTRY G0058 20180228 G041G005800000001 SUBENT G0058001 20180228 G041G005800100001 BIB 14 78 G005800100002 TITLE Correlated neutron-proton pairs from the G005800100003 photodisintegration of oxygen G005800100004 AUTHOR (J.Garvey, B.H.Patrick, J.G.Rutherglen, I.L.Smith) G005800100005 INSTITUTE (2UK GLS) G005800100006 REFERENCE (J,NP,70,241,1965) G005800100007 #doi:10.1016/0029-5582(65)90522-5 G005800100008 FACILITY (SYNCH,2UK GLS) G005800100009 INC-SOURCE (BRST,KINDT) Peak energy of photon beam is 300 MeV. G005800100010 DETECTOR (TRD) Spark chamber telescope was used for proton G005800100011 registration. G005800100012 (SCIN) Plastic scintillator NE102A (30.5 cm length, G005800100013 17.8 cm diam.) was used for neutron registration. The G005800100014 angle between photon beam direction and neutron G005800100015 counter axis was 90+-0.5 degr in horizontal plane. G005800100016 SAMPLE 5.1 cm of liquid deuterium for deuteron G005800100017 photodisintegration was used. For O-16 G005800100018 photodisintegration cylindrical water target (5.7 cm G005800100019 length and 4.8 cm diam) was used. G005800100020 METHOD (COINC) Proton and neutron detected in coincidence. G005800100021 ADD-RES Differential cross section of O-16 photodisintegration G005800100022 was measured. Two angles for outgoing photoprotons G005800100023 were used. Horizontal angle beta (ANG) of outgoing G005800100024 protons was the angle between projection of outgoing G005800100025 proton momentum to horizontal plane and incident G005800100026 photon beam direction. This angle covered the range G005800100027 55<=ANG<=75 degr. Vertical angle alpha (ANG1) was the G005800100028 angle between projection of outgoing proton momentum G005800100029 to horizontal plane and momentum of outgoing proton. G005800100030 Differential cross section of O-16 photodisintegration G005800100031 was measured as a function of alpha angle (ANG1). G005800100032 Neutron detector was set at two positions G005800100033 (at 90+-0.5 degr to gamma-ray beam): G005800100034 1. Neutron counter in the horizontal plane G005800100035 PROTON ENERGY ANG1 DATA ERR-S G005800100036 MEV ADEG MU-B/SR MU-B/SR G005800100037 88.8-142.5 1.25 5.66 0.5 G005800100038 88.8-142.5 3.75 5.31 0.5 G005800100039 88.8-142.5 6.25 4.71 0.5 G005800100040 88.8-142.5 8.75 3.77 0.5 G005800100041 88.8-142.5 11.25 3.09 0.43 G005800100042 108.5-142.5 1.25 5.27 0.71 G005800100043 108.5-142.5 3.75 4.91 0.71 G005800100044 108.5-142.5 6.25 4.19 0.62 G005800100045 108.5-142.5 8.75 3.30 0.54 G005800100046 108.5-142.5 11.25 2.05 0.45 G005800100047 88.8-108.5 1.25 6.01 0.87 G005800100048 88.8-108.5 3.75 5.86 0.87 G005800100049 88.8-108.5 6.25 5.46 0.87 G005800100050 88.8-108.5 8.75 4.43 0.79 G005800100051 88.8-108.5 11.25 4.43 0.79 G005800100052 2. Neutron detector lowered through 20 degr about G005800100053 the beam direction. G005800100054 PROTON ENERGY ANG1 DATA ERR-S G005800100055 MEV ADEG MU-B/SR MU-B/SR G005800100056 88.8-142.5 7. 3.69 0.60 G005800100057 88.8-142.5 10.75 2.27 0.35 G005800100058 88.8-142.5 15.75 2.23 0.35 G005800100059 88.8-142.5 20.75 1.67 0.30 G005800100060 88.8-142.5 25.75 1.37 0.30 G005800100061 88.8-142.5 29.5 1.37 0.36 G005800100062 108.5-142.5 7. 3.03 0.66 G005800100063 108.5-142.5 10.75 1.70 0.36 G005800100064 108.5-142.5 15.75 1.65 0.36 G005800100065 108.5-142.5 20.75 1.96 0.40 G005800100066 108.5-142.5 25.75 1.16 0.32 G005800100067 108.5-142.5 29.5 1.70 0.53 G005800100068 88.8-108.5 7. 4.83 0.10 G005800100069 88.8-108.5 10.75 3.05 0.60 G005800100070 88.8-108.5 15.75 3.13 0.60 G005800100071 88.8-108.5 20.75 1.07 0.40 G005800100072 88.8-108.5 25.75 1.66 0.48 G005800100073 88.8-108.5 29.5 0.87 0.56 G005800100074 ERR-ANALYS (ERR-S) Statistical error. G005800100075 COMMENT *by compiler* The angle ANG=65 degr used for deuteron G005800100076 photodisintegration was horizontal angle of proton G005800100077 counter (beta angle for O-16 photodisintegration). G005800100078 STATUS (TABLE) Table 2. G005800100079 HISTORY (20180228C) SS+On G005800100080 ENDBIB 78 0 G005800100081 COMMON 3 3 G005800100082 ANG ANG-RSL-HW ANG-ERR G005800100083 ADEG ADEG ADEG G005800100084 65. 7. 0.5 G005800100085 ENDCOMMON 3 0 G005800100086 ENDSUBENT 85 0 G005800199999 SUBENT G0058002 20180228 G041G005800200001 BIB 1 1 G005800200002 REACTION (1-H-2(G,N)1-H-1,,DA,P) G005800200003 ENDBIB 1 0 G005800200004 NOCOMMON 0 0 G005800200005 DATA 4 6 G005800200006 EN-MIN EN-MAX DATA ERR-S G005800200007 MEV MEV MU-B/SR MU-B/SR G005800200008 125.09 147.58 5.43 0.19 G005800200009 147.48 166.73 5.69 0.21 G005800200010 166.73 184.61 5.45 0.24 G005800200011 184.61 201.00 6.11 0.28 G005800200012 201.00 215.99 5.60 0.29 G005800200013 215.99 229.56 6.47 0.35 G005800200014 ENDDATA 8 0 G005800200015 ENDSUBENT 14 0 G005800299999 ENDENTRY 2 0 G005899999999