ENTRY 10098 19991013 00001009800000001 SUBENT 10098001 19991013 00001009800100001 BIB 14 30 1009800100002 INSTITUTE (1USADKE) 1009800100003 REFERENCE (J,PR/C,2,434,197008) 1009800100004 AUTHOR (TH.STAMMBACH,J.TAYLOR,G.SPALEK,R.L.WALTER) 1009800100005 TITLE Scattering of 7.8-MeV polarized neutrons from He-4 and 1009800100006 the phase shifts below 8 MeV. 1009800100007 FACILITY (VDG) 4 MeV Van de Graaff. 1009800100008 INC-SOURCE (POLNS,A-BE) Be9(alpha,n) reaction. Two neutron groups.1009800100009 Polarized be source on tantalum backing. 1009800100010 SAMPLE He gas in a scintillator cell. 1009800100011 METHOD Scattering of neutrons from polarized source. 1009800100012 DETECTOR (SCIN) He gas scintillator as scatterer and first 1009800100013 detector 1009800100014 (SCIN) Left and right detectors 2.5 x 10 x 5 cm**3 1009800100015 plastic scintillators. 1009800100016 Polarimeter placed at 45 degrees to alpha beam. left- 1009800100017 right scattering angles determined to within +-0.15 1009800100018 degrees. 1009800100019 ANALYSIS Asymmetries defined by (r-l)/(r+l), r=right, l=left. 1009800100020 CORRECTION Asymmetries corrected for finite detector geometry, 1009800100021 double scattering in he cell, and background under 1009800100022 peaks (including room-scattering). Regular wall effect1009800100023 in he cell small, so omitted. Spin-precession solenoid1009800100024 used to cancel instrumental asymmetries. 1009800100025 ERR-ANALYS No information. 1009800100026 STATUS (APRVD) Approved by author 1009800100027 HISTORY (19701215C) 1009800100028 (19811216A) Converted to reaction formalism 1009800100029 (19940215A) Order of incident source codes corrected. 1009800100030 Converted to lower case. 1009800100031 (19991013A) Converted to new date formalism. 1009800100032 ENDBIB 30 0 1009800100033 NOCOMMON 0 0 1009800100034 ENDSUBENT 33 0 1009800199999 SUBENT 10098002 19991013 00001009800200001 BIB 2 2 1009800200002 REACTION (2-HE-4(N,EL)2-HE-4,,POL/DA,,ASY) 1009800200003 STATUS Data taken from table in reference. 1009800200004 ENDBIB 2 0 1009800200005 NOCOMMON 0 0 1009800200006 DATA 4 16 1009800200007 EN ANG DATA DATA-ERR 1009800200008 MEV ADEG NO-DIM NO-DIM 1009800200009 3.38 60.35 -0.280 0.010 1009800200010 3.38 70.45 -0.243 0.008 1009800200011 3.38 80.45 -0.129 0.008 1009800200012 3.38 90.40 0.108 0.010 1009800200013 3.38 120.05 0.531 0.010 1009800200014 3.38 130.05 0.483 0.011 1009800200015 3.38 140.05 0.422 0.011 1009800200016 7.80 40.25 -0.226 0.009 1009800200017 7.80 50.30 -0.313 0.009 1009800200018 7.80 60.35 -0.375 0.007 1009800200019 7.80 70.45 -0.436 0.006 1009800200020 7.80 80.45 -0.426 0.007 1009800200021 7.80 90.40 -0.164 0.011 1009800200022 7.80 120.05 0.501 0.008 1009800200023 7.80 130.05 0.422 0.008 1009800200024 7.80 140.05 0.330 0.007 1009800200025 ENDDATA 18 0 1009800200026 ENDSUBENT 25 0 1009800299999 NOSUBENT 10098003 19811216 00001009800300001 NOSUBENT 10098004 19811216 00001009800400001 NOSUBENT 10098005 19811216 00001009800500001 SUBENT 10098006 19991013 00001009800600001 BIB 4 5 1009800600002 REACTION (2-HE-4(N,EL)2-HE-4,,POL/DA) 1009800600003 ANALYSIS Calculated from asymmetries, assuming source polariza- 1009800600004 tion = 0.539, as given in reference. 1009800600005 STATUS (DEP,10098002) Calculated by NNDC from asymmetries. 1009800600006 HISTORY (19811216A) SUBENTRIES 6 - 7 COMBINED 1009800600007 ENDBIB 5 0 1009800600008 NOCOMMON 0 0 1009800600009 DATA 3 16 1009800600010 EN ANG-CM DATA 1009800600011 MEV ADEG NO-DIM 1009800600012 3.38 73.00 -0.526 1009800600013 3.38 84.20 -0.457 1009800600014 3.38 94.85 -0.243 1009800600015 3.38 105.00 0.203 1009800600016 3.38 132.70 0.998 1009800600017 3.38 141.20 0.908 1009800600018 3.38 149.35 0.793 1009800600019 7.80 49.60 -0.419 1009800600020 7.80 61.50 -0.581 1009800600021 7.80 73.00 -0.696 1009800600022 7.80 84.20 -0.809 1009800600023 7.80 94.85 -0.790 1009800600024 7.80 105.00 -0.304 1009800600025 7.80 132.70 0.929 1009800600026 7.80 141.20 0.783 1009800600027 7.80 149.35 0.612 1009800600028 ENDDATA 18 0 1009800600029 ENDSUBENT 28 0 1009800699999 NOSUBENT 10098007 19811216 00001009800700001 ENDENTRY 7 0 1009899999999