ENTRY M1011 20200110 M104M101100000001 SUBENT M1011001 20200110 M104M101100100001 BIB 15 41 M101100100002 TITLE Elastic scattering of 247-MeV gamma rays on hydrogen. M101100100003 AUTHOR (P.S.Baranov,L.I.Slovokhotov,G.A.Sokol,L.N.Shtarkov) M101100100004 REFERENCE (J,ZET,41,1713,1961) M101100100005 (J,JET,14,1219,1962) M101100100006 English translation of ZET,41,1713,1961. M101100100007 INSTITUTE (4RUSLEB) M101100100008 FACILITY (SYNCH,4RUSLEB) 260 MeV synchrotron of the Lebedev M101100100009 Physics Institute. M101100100010 INC-SOURCE (BRST) M101100100011 SAMPLE Liquid hydrogen target, thin-walled brass cylinder of M101100100012 15 mg/cm**2 wall thickness, 50 mm diameter and 100 mm M101100100013 length. M101100100014 METHOD (EXTB,SITA) M101100100015 DETECTOR (TELES,PROPC,SCIN) Protons were registered by a M101100100016 telescope consisting of three proportional counters M101100100017 and one scintillation counter. M101100100018 The proportional counters were glass cylinders of M101100100019 60-mm diameter and 200 mm length. The counters were M101100100020 filled with argon and 1% CO2 at 500 mm Hg. M101100100021 The scintillation counter consisted of a plastic M101100100022 scintillator (p-terphenyl in polystyrene) 60 mm in M101100100023 diameter and 5.5 mm thick for measurements at 16, 24, M101100100024 36, and 44 degree, or 0.3 mm thick for measurements M101100100025 at 56 and 64 degree. M101100100026 (SCIN) The g-ray counter consisted of two liquid M101100100027 scintillators (p-terphenyl in phenylcyclohexane) in M101100100028 Plexiglass containers of 150 mm diamete and 30 mm M101100100029 thickness. M101100100030 ANALYSIS The experimental investigation of elastic g-ray M101100100031 scattering on hydrogen using identifying the process M101100100032 "g + p -> p' + g'" against the background of the M101100100033 process "g + p -> p' + PIO -> g1 + g2". M101100100034 MONITOR (1-H-1(G,PI0)1-H-1,,SIG) M101100100035 MONIT-REF (,R.G.Vasil'kov+,J,JET,10,7,1960) M101100100036 ERR-ANALYS (ERR-S) Statistical uncertainties. M101100100037 COMMENT The classical electron radius factor was treated from M101100100038 the known value of ptoton Compton effect "g+p -> M101100100039 p'+g'" cross section which is about SIG-TOT ~ M101100100040 2 x 10-31 cm**2 (page 1219 of JET,14,1219,1962). M101100100041 HISTORY (20200110C) Data were compiled at the Russia MSU SINP M101100100042 CDFE by V.Varlamov. M101100100043 ENDBIB 41 0 M101100100044 COMMON 3 3 M101100100045 ANG-NRM MONIT MONIT-ERR M101100100046 ADEG MU-B/SR MU-B/SR M101100100047 16. 26.6 2.7 M101100100048 ENDCOMMON 3 0 M101100100049 ENDSUBENT 48 0 M101100199999 SUBENT M1011002 20200110 M104M101100200001 BIB 3 6 M101100200002 REACTION (1-H-1(G,EL)1-H-1,,DA) M101100200003 STATUS (TABLE) Data from table (page 1222 of M101100200004 JET,14,1219,1962). M101100200005 FLAG (1.) Data obtained at energies En = 232.6 (ang-cm = M101100200006 54.8 degree) and 237 MeV (ang-cm = 70.3 degree) M101100200007 converted to EN = 247 MeV, from Fig. 5. M101100200008 ENDBIB 6 0 M101100200009 NOCOMMON 0 0 M101100200010 DATA 5 8 M101100200011 EN ANG-CM DATA-CM ERR-S FLAG M101100200012 MEV ADEG MU-B/SR MU-B/SR NO-DIM M101100200013 232.6 54.8 0.134 0.018 M101100200014 237.0 70.3 0.160 0.022 M101100200015 245.2 93.1 0.208 0.024 M101100200016 247.0 54.8 0.134 0.036 1. M101100200017 247.0 70.3 0.138 0.033 1. M101100200018 247.2 108.8 0.309 0.033 M101100200019 247.7 148.0 0.417 0.035 M101100200020 247.8 132.2 0.333 0.028 M101100200021 ENDDATA 10 0 M101100200022 ENDSUBENT 21 0 M101100299999 SUBENT M1011003 20200110 M104M101100300001 BIB 2 4 M101100300002 REACTION ((1-H-1(G,EL)1-H-1,,DA)/ M101100300003 (1-H-1(G,PI0)1-H-1,,DA)) M101100300004 STATUS (TABLE) Data from table (page 1222 of M101100300005 JET,14,1219,1962). M101100300006 ENDBIB 4 0 M101100300007 NOCOMMON 0 0 M101100300008 DATA 4 6 M101100300009 EN ANG-CM DATA-CM ERR-S M101100300010 MEV ADEG NO-DIM NO-DIM M101100300011 232.6 54.8 8.07 1.07 M101100300012 237.0 70.3 9.43 1.37 M101100300013 245.2 93.1 25.7 2.7 M101100300014 247.2 108.8 74.0 8.0 M101100300015 247.7 148.0 140.0 12.0 M101100300016 247.8 132.2 110.0 9.0 M101100300017 ENDDATA 8 0 M101100300018 ENDSUBENT 17 0 M101100399999 ENDENTRY 3 0 M101199999999