ENTRY M0523 20160205 M082M052300000001 SUBENT M0523001 20160205 M082M052300100001 BIB 14 47 M052300100002 TITLE Simultaneous measurement of the (g,p)/(g,n) cross M052300100003 section ratio in He-4 as a test of charge symmetry. M052300100004 AUTHOR (R.E.J.Florizone,J.Asai,G.Feldman,E.L.Hallin, M052300100005 D.M.Skopik,J.M.Vogt,R.C.Haight,S.M.Sterbenz) M052300100006 INSTITUTE (1CANSAS,1USALAS) M052300100007 REFERENCE (J,PRL,72,3476,1994) M052300100008 FACILITY (LINAC,1CANSAS) 300 MeV electron linac coupled to a M052300100009 pulse stretcher ring. M052300100010 INC-SOURCE (QMPH,TAGD) Electron tagged bremsstrahlung. M052300100011 SAMPLE A sealed target chamber located about 3 downstream M052300100012 from the beam radiator was filled with M052300100013 helium/hydrogen (85 % /15 %) gas mixture at room M052300100014 temperature at either 20.0 or 53.3 KPA pressure. M052300100015 METHOD (REC,EDE) The H-3 and He-3 recoils distinguishing M052300100016 by standard particle identification techniques based M052300100017 on energy loss in 2 elements ede telescopes. M052300100018 DETECTOR (PROPC,SOLST) Each of 4 identical EDE telescopes M052300100019 consists of a gas proportional counter and thick M052300100020 solid state detector. M052300100021 ANALYSIS (INTAD) Angle-integrated yields obtaining using M052300100022 available angular distribution data. Integration of M052300100023 theoretical angular distribution normalized to the M052300100024 yield measured at 90 deg. M052300100025 REL-REF (R,,J.D.Irish+,J,CJP,53,802,1975) Angular M052300100026 distribution data. M052300100027 (R,,F.Balestra+,J,NC/A,38,145,1977) Angular M052300100028 distribution data. M052300100029 (R,,R.C.McBroom+,J,PR/C,25,1644,1982) Angular M052300100030 distribution data. M052300100031 ERR-ANALYS (ERR-S) Statistical errors are given. M052300100032 COMMENT The (g,p) and (g,n) differential yields at 90 degree M052300100033 have been measured for two-body photodisintegration M052300100034 of He-4 using tagged photons of energy Eg = 25 - 60 M052300100035 MeV. Data for both channels were obtained M052300100036 simultaneously using windowless ede telescopes to M052300100037 detect the H-3 and He-3 recoils. The ratio of M052300100038 angle-integrated yields which is insensitive to M052300100039 systematic uncertainties due to the simultaneity of M052300100040 the measurements, agrees with calculations employing M052300100041 only charge-symmetric nuclear interactions. Within M052300100042 the present errors the data show no evidence of a M052300100043 significant charge-symmetry violation in He-4 in M052300100044 energy range studied. M052300100045 HISTORY (19980304C) Data were compiled at the Russia MSU SINP M052300100046 CDFE by V.Varlamov. M052300100047 (20160205A) Corrected by V.Varlamov: dates, STATUS, M052300100048 ERR-ANALYS, FLAG, lowercase. M052300100049 ENDBIB 47 0 M052300100050 NOCOMMON 0 0 M052300100051 ENDSUBENT 50 0 M052300199999 SUBENT M0523002 20160205 M082M052300200001 BIB 5 6 M052300200002 REACTION ((2-HE-4(G,P)1-H-3,,SIG,,,DERIV)/ M052300200003 (2-HE-4(G,N)2-HE-3,,SIG,,,DERIV)) M052300200004 PART-DET (T,HE3) M052300200005 FLAG (1.) Data for low pressure 20.0 KPA. M052300200006 STATUS (CURVE) Data from the Fig. 3. M052300200007 HISTORY (20160205A) Corrected by V.V.: STATUS, ERR-S, FLAG. M052300200008 ENDBIB 6 0 M052300200009 NOCOMMON 0 0 M052300200010 DATA 4 10 M052300200011 EN DATA ERR-S FLAG M052300200012 MEV NO-DIM NO-DIM NO-DIM M052300200013 26.51 1.22 .20 1.00 M052300200014 29.14 1.26 .21 1.00 M052300200015 31.83 1.33 .22 1.00 M052300200016 32. 1.21 .09 M052300200017 36.91 1.05 .09 M052300200018 41.2 1.20 .13 M052300200019 45.43 1.02 .12 M052300200020 49.43 1.19 .20 M052300200021 53.43 1.13 .22 M052300200022 57.14 1.30 .30 M052300200023 ENDDATA 12 0 M052300200024 ENDSUBENT 23 0 M052300299999 ENDENTRY 2 0 M052399999999