ENTRY M0484 20160220 M082M048400000001 SUBENT M0484001 20160220 M082M048400100001 BIB 15 46 M048400100002 TITLE Experimental investigation of the He-4(gamma,P)H-3 M048400100003 reaction in the delta-resonance region. M048400100004 AUTHOR (J.Arends,J.Eyink,A.Hegerath,H.Hartmann,B.Mecking, M048400100005 G.Noldeke,H.Rost) M048400100006 REFERENCE (J,NP/A,322,253,1979) M048400100007 INSTITUTE (2GERBON) M048400100008 FACILITY (SYNCH,2GERBON) M048400100009 INC-SOURCE (QMPH,KINDT) Kinematically determined (reaction M048400100010 particle tagged) energy of incident bremsstrahlung M048400100011 photons. M048400100012 METHOD (COINC,TOF) M048400100013 DETECTOR (SCIN) M048400100014 SAMPLE A conventional target containing a supply of 5 litres M048400100015 of liquid helium was used. During the first series M048400100016 of measurements the target cell was a vertical M048400100017 cylinder with 50 micron mylar walls and a diameter M048400100018 of 6 cm; in the second series the cell was a M048400100019 horizontal cylinder with a length of 6 cm in the M048400100020 beam direction, a diameter of 3 cm and 50 micron M048400100021 kapton walls. M048400100022 PART-DET (P) M048400100023 (T) M048400100024 ANALYSIS Because the small variation of the proton and triton M048400100025 laboratory angles with photon energy for a given M048400100026 c.m.s. angle the direct measurement of cross section M048400100027 was able. M048400100028 ERR-ANALYS (ERR-S) Statistical errors. M048400100029 (ERR-SYS,5.0,11.0) Systematic errors were estimated M048400100030 to be about of 5 - 11%. M048400100031 CORRECTION The corrections were made for loss of particles by M048400100032 inelastic nuclear interactions (from 8 to 30%) and M048400100033 for background (1 - 8%). M048400100034 COMMENT The He-4(g,p)H-3 reaction was investigated in the M048400100035 photon energy region between 200 and 450 MeV and at M048400100036 proton c.m. angles between 30 and 150 degrees. The M048400100037 outgoing particles were detected in coincidence in M048400100038 two time-of-flight spectrometers consisting of M048400100039 scintillation counters; energies and angles of both M048400100040 particles were determined. The measured angular M048400100041 distributions show a strong forward peak. The M048400100042 differential cross sections and the total cross M048400100043 section fall smoothly with increasing photon energy. M048400100044 HISTORY (19910218C) Data were compiled at the Russia MSU SINP M048400100045 CDFE by V.Varlamov M048400100046 (20160220A) Corrected by V.Varlamov: dates, M048400100047 ERR-ANALYS, STATUS, NOCOMMON, lowercase. M048400100048 ENDBIB 46 0 M048400100049 NOCOMMON 0 0 M048400100050 ENDSUBENT 49 0 M048400199999 SUBENT M0484002 20160220 M082M048400200001 BIB 3 3 M048400200002 REACTION (2-HE-4(G,P)1-H-3,,DA) M048400200003 STATUS (TABLE) Data from Table 2. M048400200004 HISTORY (20160220A) Corrected by V.Varlamov: STATUS, ERR-S. M048400200005 ENDBIB 3 0 M048400200006 NOCOMMON 0 0 M048400200007 DATA 4 69 M048400200008 ANG-CM EN DATA ERR-S M048400200009 ADEG MEV MB/SR MB/SR M048400200010 30. 303. 238.2 23.9 M048400200011 30. 334. 166.3 15.6 M048400200012 30. 371. 180.9 14.0 M048400200013 30. 420. 163.1 12.9 M048400200014 45. 278. 401.4 22.7 M048400200015 45. 303. 394.6 19.1 M048400200016 45. 334. 339.7 16.7 M048400200017 45. 371. 246.0 13.2 M048400200018 45. 420. 181.9 10.8 M048400200019 60. 223. 784.3 47.2 M048400200020 60. 239. 641.6 39.5 M048400200021 60. 257. 568.6 35.0 M048400200022 60. 278. 481.5 30.6 M048400200023 60. 303. 395.2 26.3 M048400200024 60. 334. 329.1 22.7 M048400200025 60. 371. 196.7 16.4 M048400200026 60. 420. 154.1 13.8 M048400200027 75. 223. 483.8 24.8 M048400200028 75. 239. 411.8 20.1 M048400200029 75. 257. 293.7 18.0 M048400200030 75. 278. 246.6 15.8 M048400200031 75. 303. 176.5 12.8 M048400200032 75. 334. 142.1 10.9 M048400200033 75. 371. 105.1 8.8 M048400200034 75. 420. 67.6 6.9 M048400200035 90. 209. 426.1 14.7 M048400200036 90. 223. 348.9 13.0 M048400200037 90. 239. 242.6 10.5 M048400200038 90. 257. 194.4 9.1 M048400200039 90. 278. 125.0 7.0 M048400200040 90. 303. 92.3 5.8 M048400200041 90. 334. 69.9 5.2 M048400200042 90. 371. 48.4 3.7 M048400200043 90. 420. 23.3 2.6 M048400200044 105. 197. 154.4 5.4 M048400200045 105. 209. 143.1 5.0 M048400200046 105. 223. 130.6 4.6 M048400200047 105. 239. 102.0 4.0 M048400200048 105. 257. 64.4 3.1 M048400200049 105. 278. 52.6 2.6 M048400200050 105. 303. 43.2 2.3 M048400200051 105. 334. 30.8 1.8 M048400200052 105. 371. 23.5 1.5 M048400200053 105. 420. 13.6 1.1 M048400200054 120. 223. 35.0 1.8 M048400200055 120. 239. 26.6 1.3 M048400200056 120. 257. 27.1 1.5 M048400200057 120. 278. 23.0 1.4 M048400200058 120. 303. 20.6 1.4 M048400200059 120. 334. 20.6 1.5 M048400200060 120. 371. 13.4 1.4 M048400200061 120. 420. 8.9 1.3 M048400200062 135. 223. 25.9 2.1 M048400200063 135. 239. 25.1 2.1 M048400200064 135. 257. 21.1 2.0 M048400200065 135. 278. 18.9 2.2 M048400200066 135. 303. 16.7 2.1 M048400200067 135. 334. 11.1 2.0 M048400200068 135. 371. 9.4 2.1 M048400200069 135. 420. 3.1 1.3 M048400200070 150. 209. 13.9 1.2 M048400200071 150. 223. 13.0 1.2 M048400200072 150. 239. 12.5 1.2 M048400200073 150. 257. 12.8 1.3 M048400200074 150. 278. 10.8 1.2 M048400200075 150. 303. 11.6 1.4 M048400200076 150. 334. 9.3 1.4 M048400200077 150. 371. 6.2 1.3 M048400200078 150. 420. 5.1 1.4 M048400200079 ENDDATA 71 0 M048400200080 ENDSUBENT 79 0 M048400299999 SUBENT M0484003 20160220 M082M048400300001 BIB 3 3 M048400300002 REACTION (2-HE-4(G,P)1-H-3,,SIG) M048400300003 STATUS (TABLE) Data from Table 3. M048400300004 HISTORY (20160220A) Corrected by V.Varlamov: STATUS, ERR-S. M048400300005 ENDBIB 3 0 M048400300006 NOCOMMON 0 0 M048400300007 DATA 3 8 M048400300008 EN DATA ERR-S M048400300009 MEV MICRO-B MICRO-B M048400300010 223. 3.52 .24 M048400300011 239. 3.04 .22 M048400300012 257. 2.66 .20 M048400300013 278. 2.06 .13 M048400300014 303. 1.77 .12 M048400300015 334. 1.41 .10 M048400300016 371. 1.06 .09 M048400300017 420. .76 .09 M048400300018 ENDDATA 10 0 M048400300019 ENDSUBENT 18 0 M048400399999 ENDENTRY 3 0 M048499999999