ENTRY L0280 20221004 L028000000001 SUBENT L0280001 20221004 20240513 L028000100001 BIB 11 26 L028000100002 TITLE Scattering of High-Energy Electrons from Ca40, V51, L028000100003 Co59, In115, Sb121,123, and Bi209 L028000100004 AUTHOR (H.Crannell,R.Helm,H.Kendall,J.Oeser,M.Yearian) L028000100005 REFERENCE (J,PR,121,283,1961) L028000100006 #doi:10.1103/PhysRev.121.283 L028000100007 INSTITUTE (1USASTF) L028000100008 FACILITY (ACCEL,1USASTF) L028000100009 DETECTOR (MAGSP) The single-channel detector used with the L028000100010 36-in. magnetic spectrometer was replaced by a L028000100011 multichannel detector that allowed simultaneous L028000100012 collection of data at ten different values of L028000100013 electron momenta. L028000100014 SAMPLE Authors used targets of Ca40, V51, Co59, In115, Sb121, L028000100015 123, and Bi209. The targets used were thin enough so L028000100016 that multiple scattering and straggling could not L028000100017 cause part of the beam to miss either the secondary L028000100018 emission monitor or the Faraday cup which were used L028000100019 to integrate the primary electron beam. L028000100020 METHOD The cross sections were obtained by comparison with L028000100021 scattering from the proton. L028000100022 ERR-ANALYS (ERR-S) The standard deviations arising from counting L028000100023 statistics only in the determinations of the L028000100024 target-nuclei elastic peak areas and of the proton L028000100025 calibration peaks. L028000100026 STATUS (TABLE,,H.Crannell+,J,PR,121,283,1961) Table II L028000100027 HISTORY (20221004C) BP L028000100028 ENDBIB 26 0 L028000100029 COMMON 1 3 L028000100030 EN L028000100031 MEV L028000100032 183.0 L028000100033 ENDCOMMON 3 0 L028000100034 ENDSUBENT 33 0 L028000199999 SUBENT L0280002 20221004 20240513 L028000200001 BIB 3 14 L028000200002 REACTION (20-CA-40(E,EL)20-CA-40,,DA) L028000200003 SAMPLE The Ca40 target was prepared at Stanford Research L028000200004 Institute by heating commercial-grade calcium chips L028000200005 and molding under an argon atmosphere. The final L028000200006 thickness of 0.090 in. was achieved by milling under L028000200007 kerosene. The target contained 96% Ca40. It was L028000200008 stored in diffusion pump oil to retard oxidation of L028000200009 the surface. Approximately 1% oxygen was observed in L028000200010 the scattering experiments. Because of recoil of the L028000200011 target nucleus, the elastic peak from oxygen lies L028000200012 about 0.7% lower in momentum than the peak from Ca40, L028000200013 and the yield of electrons scattered from oxygen L028000200014 could be identified and subtracted. L028000200015 FLAG (1.) There are multiple measurements at some angles. L028000200016 ENDBIB 14 0 L028000200017 NOCOMMON 0 0 L028000200018 DATA 4 5 L028000200019 ANG DATA ERR-S FLAG L028000200020 ADEG MB/SR MB/SR NO-DIM L028000200021 40.0 5.53E-01 0.55E-01 L028000200022 50.0 7.66E-02 0.14E-02 L028000200023 70.0 8.06E-04 0.8E-04 1. L028000200024 70.0 7.33E-04 0.7E-04 1. L028000200025 85.0 2.62E-04 0.09E-04 L028000200026 ENDDATA 7 0 L028000200027 ENDSUBENT 26 0 L028000299999 SUBENT L0280003 20221004 20240513 L028000300001 BIB 1 1 L028000300002 REACTION (23-V-51(E,EL)23-V-51,,DA) L028000300003 ENDBIB 1 0 L028000300004 NOCOMMON 0 0 L028000300005 DATA 3 3 L028000300006 ANG DATA ERR-S L028000300007 ADEG MB/SR MB/SR L028000300008 45.0 2.53E-01 0.25E-01 L028000300009 70.0 9.81E-04 0.98E-04 L028000300010 80.0 8.17E-04 0.28E-04 L028000300011 ENDDATA 5 0 L028000300012 ENDSUBENT 11 0 L028000399999 SUBENT L0280004 20221004 20240513 L028000400001 BIB 3 5 L028000400002 REACTION (27-CO-59(E,EL)27-CO-59,,DA) L028000400003 SAMPLE The Co59 target was made from the same stock as in L028000400004 the earlier experiments but was milled to 0.014 in. L028000400005 thickness from the 0.042 in. used previously. L028000400006 FLAG (1.) There are multiple measurements at some angles. L028000400007 ENDBIB 5 0 L028000400008 NOCOMMON 0 0 L028000400009 DATA 4 8 L028000400010 ANG DATA ERR-S FLAG L028000400011 ADEG MB/SR MB/SR NO-DIM L028000400012 40.0 8.06E-01 0.81E-01 L028000400013 45.0 2.36E-01 0.24E-01 L028000400014 60.0 5.18E-03 0.16E-03 L028000400015 70.0 1.625E-03 0.16E-03 1. L028000400016 70.0 1.92E-03 0.19E-03 1. L028000400017 75.0 1.86E-03 0.08E-03 1. L028000400018 75.0 1.69E-03 0.06E-03 1. L028000400019 100.0 1.58E-04 0.10E-04 L028000400020 ENDDATA 10 0 L028000400021 ENDSUBENT 20 0 L028000499999 SUBENT L0280005 20221004 20240513 L028000500001 BIB 1 1 L028000500002 REACTION (49-IN-115(E,EL)49-IN-115,,DA) L028000500003 ENDBIB 1 0 L028000500004 NOCOMMON 0 0 L028000500005 DATA 3 3 L028000500006 ANG DATA ERR-S L028000500007 ADEG MB/SR MB/SR L028000500008 40.0 9.24E+00 0.92E+00 L028000500009 70.0 1.02E-02 0.10E-02 L028000500010 100.0 1.51E-04 0.14E-04 L028000500011 ENDDATA 5 0 L028000500012 ENDSUBENT 11 0 L028000599999 SUBENT L0280006 20221004 20240513 L028000600001 BIB 2 2 L028000600002 REACTION (51-SB-0(E,EL)51-SB-0,,DA) L028000600003 FLAG (1.) There are multiple measurements at some angles. L028000600004 ENDBIB 2 0 L028000600005 NOCOMMON 0 0 L028000600006 DATA 4 3 L028000600007 ANG DATA ERR-S FLAG L028000600008 ADEG MB/SR MB/SR NO-DIM L028000600009 40.0 8.02E-01 0.8E-01 L028000600010 70.0 9.1E-03 0.91E-03 1. L028000600011 70.0 8.5E-03 0.85E-03 1. L028000600012 ENDDATA 5 0 L028000600013 ENDSUBENT 12 0 L028000699999 SUBENT L0280007 20221004 20240513 L028000700001 BIB 2 2 L028000700002 REACTION (83-BI-209(E,EL)83-BI-209,,DA) L028000700003 FLAG (1.) There are multiple measurements at some angles. L028000700004 ENDBIB 2 0 L028000700005 NOCOMMON 0 0 L028000700006 DATA 4 11 L028000700007 ANG DATA ERR-S FLAG L028000700008 ADEG MB/SR MB/SR NO-DIM L028000700009 40.0 2.48E+00 0.25E+00 L028000700010 50.0 4.01E-01 0.12E-01 L028000700011 55.0 2.34E-01 0.08E-01 L028000700012 60.0 7.86E-02 0.21E-02 L028000700013 65.0 2.33E-02 0.08E-02 1. L028000700014 65.0 2.05E-02 0.17E-02 1. L028000700015 70.0 10.96E-03 0.33E-03 1. L028000700016 70.0 9.97E-03 0.99E-03 1. L028000700017 70.0 9.00E-03 0.90E-03 1. L028000700018 75.0 6.76E-03 0.28E-03 1. L028000700019 75.0 6.55E-03 0.32E-03 1. L028000700020 ENDDATA 13 0 L028000700021 ENDSUBENT 20 0 L028000799999 ENDENTRY 7 0 L028099999999