ENTRY L0232 20180517 L036L023200000001 SUBENT L0232001 20180517 L036L023200100001 BIB 9 38 L023200100002 TITLE Compton scattering from 4He at 61 MeV L023200100003 AUTHOR (M.H.Sikora,M.W.Ahmed,A.Banu,C.Bartram,B.Crowe, L023200100004 E.J.Downie,G.Feldman,H.Gao,H.W.Griesshammer,H.Hao, L023200100005 C.R.Howell,H.J.Karwowski,D.P.Kendellen,M.A.Kovash, L023200100006 X.Li,D.M.Markoff,S.Mikhailov,V.Popov,R.E.Pywell, L023200100007 J.A.Silano,M.C.Spraker,P.Wallace,H.R.Weller, L023200100008 C.S.Whisnant,Y.K.Wu,W.Xiong,X.Yan,Z.W.Zhao) L023200100009 INSTITUTE (1USADKE,1USATNL,1USANCC,1USANCA,1USAKTY,1CANSAS, L023200100010 1USANGC,1USAGWU) L023200100011 (1USAUSA) James Madison University, Harrisonburg, L023200100012 Virginia L023200100013 REFERENCE (J,PR/C,96,055209,2017) L023200100014 FACILITY (ESTRG,1USATNL) Experiment performed at HIgS facility L023200100015 at Duke University, generated circularly polarized L023200100016 and monoenergetic photon beams. L023200100017 SAMPLE The liquid 4He target was used. The target cell was a L023200100018 Kapton cylinder with 0.13-mm-thick walls and L023200100019 dimensions 20 cm long x 4 cm diameter.The liquid was L023200100020 maintained in the cell at 3.17 K for a target L023200100021 thickness of (4.22+-0.04) x1E+23 nuclei/cm2 L023200100022 DETECTOR (NAICR) Energy spectra were obtained using seven L023200100023 NaI(Tl) detectors positioned at angles ranging from L023200100024 40. to 159. with the front face of each detector L023200100025 approximately 58 cm from the target center. L023200100026 The core crystals, measuring 25.4 cm in diameter L023200100027 and ranging in length from 25.4 to 30.5 cm, were L023200100028 surrounded by a 7.5-cm-thick segmented anticoincidence L023200100029 shield consisting of eight NaI(Tl) crystals 30.5 cm L023200100030 in length. L023200100031 INC-SOURCE (LCS) The HIgS facility produces a quasi- L023200100032 monoenergetic Compton backscattered photon beam L023200100033 tunable in wide energy range with either linear or L023200100034 circular polarization. A high-flux photon beam is L023200100035 created by colliding relativistic electron beam L023200100036 bunches, circulating in a storage ring, with photon L023200100037 pulses inside the high-power optical cavity of a free- L023200100038 electron laser (FEL) . L023200100039 HISTORY (20180517C) Compiled by S.H. L023200100040 ENDBIB 38 0 L023200100041 NOCOMMON 0 0 L023200100042 ENDSUBENT 41 0 L023200199999 SUBENT L0232002 20180517 L036L023200200001 BIB 3 5 L023200200002 REACTION (2-HE-4(G,EL)2-HE-4,,DA) L023200200003 STATUS (TABLE) Data taken from tab. 4. of the reference L023200200004 ERR-ANALYS (ERR-S) Statistical uncertainty L023200200005 (ERR-SYS) Overal systematic uncertainty L023200200006 (ERR-1) Angle dependent systematic uncertainty L023200200007 ENDBIB 5 0 L023200200008 COMMON 2 3 L023200200009 EN ERR-SYS L023200200010 MEV PER-CENT L023200200011 61. 2.2 L023200200012 ENDCOMMON 3 0 L023200200013 DATA 4 7 L023200200014 ANG DATA ERR-S ERR-1 L023200200015 ADEG NB/SR NB/SR NB/SR L023200200016 40. 119.8 6.8 4.2 L023200200017 55. 115.9 5.4 1.5 L023200200018 75. 89.8 3.2 1.5 L023200200019 110. 85.8 3.3 1.3 L023200200020 125. 95.3 2.9 1.5 L023200200021 145. 120.0 3.2 1.1 L023200200022 159. 150.2 3.5 1.5 L023200200023 ENDDATA 9 0 L023200200024 ENDSUBENT 23 0 L023200299999 ENDENTRY 2 0 L023299999999