ENTRY M0404 20100224 M052M040400000001 SUBENT M0404001 20100224 M052M040400100001 BIB 15 37 M040400100002 TITLE Measurement of the He-4(g,p)H-3 total cross section M040400100003 and charge symmetry. M040400100004 AUTHOR (R.Bernabei,A.Chisholm,S.D'angelo,M.P.De Pascale, M040400100005 P.Picozza,C.Shaerf,P.Belli,L.Casano,A.Incicchitti, M040400100006 D.Prosperi,B.Girolami) M040400100007 REFERENCE (J,PR/C,38,1990,1988) M040400100008 INSTITUTE (2ITYFRA) M040400100009 FACILITY (ESTRG,2ITYFRA) Electron storage ring "ADONE". M040400100010 INC-SOURCE (LCS) Monocromatic "LADON" photon beam obtained by M040400100011 compton backscattering of laser light by electrons M040400100012 circulating in storage ring. The energy resolution M040400100013 varied from 4.3 to 9.0%. M040400100014 SAMPLE The target was helium gas at a pressure of 30 bars. M040400100015 the target container was a very thin (0.16 mm) M040400100016 aluminium cylinder of 15 cm length and 1.5 cm M040400100017 diameter, with two lexan end caps. M040400100018 METHOD (EXTB) M040400100019 DETECTOR (SCIN) Liquid scintillator NE213. M040400100020 PART-DET (P) M040400100021 ANALYSIS Direct measurement of the reaction cross section. M040400100022 background contributions come both from the M040400100023 interactions of photons with the detector materials M040400100024 and from the bremsstrahlung component of the beam M040400100025 were evaluated by alternating empty and full target M040400100026 and by direct measurements with turning off the laser M040400100027 light and running the bremsstrahlung beam alone. M040400100028 ERR-ANALYS (ERR-S) Statistical errors. M040400100029 COMMENT The absolute total cross section for the He-4(g,p)H-3 M040400100030 reaction has been measured in the g-ray energy region M040400100031 between 28.6 and 58.1 MeV with a monocromatic photon M040400100032 beam and a nearly 4PI proton detector. M040400100033 STATUS (TABLE) M040400100034 HISTORY (19910218C) M040400100035 (20100224A) DATAs, lowercase, INC-SOURCE, ERR-ANALYS, M040400100036 REACTION in SUBENT 004 changed from (G,P)0-NN-1,SEQ, M040400100037 to (G,N)1-H-1,, by at the Russia MSU SINP CDFE M040400100038 V.Varlamov. M040400100039 ENDBIB 37 0 M040400100040 COMMON 1 3 M040400100041 EN-RSL-FW M040400100042 PER-CENT M040400100043 9. M040400100044 ENDCOMMON 3 0 M040400100045 ENDSUBENT 44 0 M040400199999 SUBENT M0404002 20100224 M052M040400200001 BIB 2 2 M040400200002 REACTION (2-HE-4(G,P)1-H-3,,SIG) M040400200003 ERR-ANALYS (ERR-SYS) Systematic errors. M040400200004 ENDBIB 2 0 M040400200005 NOCOMMON 0 0 M040400200006 DATA 5 10 M040400200007 EN EN-ERR DATA ERR-S ERR-SYS M040400200008 MEV MEV MB MB PER-CENT M040400200009 28.6 .1 1.15 .03 7.5 M040400200010 29.6 .1 1.13 .03 6.4 M040400200011 30.4 .2 1.15 .02 5.7 M040400200012 31.6 .2 1.15 .03 5.3 M040400200013 32.5 .2 1.06 .02 5.3 M040400200014 34.1 .2 1.25 .01 4.4 M040400200015 37.5 .3 .92 .02 4.2 M040400200016 42.4 .3 .83 .01 4.1 M040400200017 44.9 .5 .82 .01 4.2 M040400200018 58.1 .7 .44 .01 4.3 M040400200019 ENDDATA 12 0 M040400200020 ENDSUBENT 19 0 M040400299999 SUBENT M0404003 20100224 M052M040400300001 BIB 3 4 M040400300002 REACTION ((2-HE-4(G,P)1-H-3,,SIG)/(2-HE-4(G,N)2-HE-3,,SIG)) M040400300003 STATUS (DEP,M0404002) M040400300004 REL-REF (R,,J.R.Calarco+,J,PR/C,27,1866,1983) Data on cross M040400300005 section of HE-4(G,N) reaction. M040400300006 ENDBIB 4 0 M040400300007 NOCOMMON 0 0 M040400300008 DATA 4 10 M040400300009 EN EN-ERR DATA ERR-S M040400300010 MEV MEV NO-DIM NO-DIM M040400300011 28.6 .1 1.03 .16 M040400300012 29.6 .1 1.01 .17 M040400300013 30.4 .2 1.03 .17 M040400300014 31.6 .2 1.03 .15 M040400300015 32.5 .2 .95 .14 M040400300016 34.1 .2 1.12 .13 M040400300017 37.5 .3 .92 .12 M040400300018 42.4 .3 1.01 .11 M040400300019 44.9 .5 1.21 .14 M040400300020 58.1 .7 1.47 .40 M040400300021 ENDDATA 12 0 M040400300022 ENDSUBENT 21 0 M040400399999 SUBENT M0404004 20100224 M052M040400400001 BIB 1 1 M040400400002 REACTION (1-H-2(G,N)1-H-1,,SIG) M040400400003 ENDBIB 1 0 M040400400004 NOCOMMON 0 0 M040400400005 DATA 4 2 M040400400006 EN EN-ERR DATA ERR-S M040400400007 MEV MEV MICRO-B MICRO-B M040400400008 15.3 .2 924. 10. M040400400009 19.1 .2 625. 15. M040400400010 ENDDATA 4 0 M040400400011 ENDSUBENT 10 0 M040400499999 ENDENTRY 4 0 M040499999999