ENTRY C2832 20221004 C283200000001 SUBENT C2832001 20221004 20231011 C283200100001 BIB 8 9 C283200100002 TITLE P-P Elastic Scattering and Pion Production at 419 Mev C283200100003 AUTHOR (J.Marshall, L.Marshall,V.A.Nedzel) C283200100004 REFERENCE (J,PR,93,927(M2),1954) C283200100005 #doi:10.1103/PhysRev.93.909 C283200100006 INSTITUTE (1USACHI) C283200100007 FACILITY (SYNCY,1USACHI) The Chicago synchrocyclotron. C283200100008 ERR-ANALYS (DATA-ERR) No details on sources of uncertainties. C283200100009 STATUS (TABLE) page 927 of J,PR,93,927(M2),1954. C283200100010 HISTORY (20221004C) BP C283200100011 ENDBIB 9 0 C283200100012 COMMON 1 3 C283200100013 EN C283200100014 MEV C283200100015 419.0 C283200100016 ENDCOMMON 3 0 C283200100017 ENDSUBENT 16 0 C283200199999 SUBENT C2832002 20221004 20231011 C283200200001 BIB 2 6 C283200200002 REACTION (1-H-1(P,EL)1-H-1,,DA) C283200200003 METHOD The differential p-p elastic scattering cross section C283200200004 at 419 MEV was measured from 90 to 54 degrees C283200200005 baricentral angle by the method in which the two C283200200006 elastically scattered protons were detected in C283200200007 coincidence with the incident proton. C283200200008 ENDBIB 6 0 C283200200009 NOCOMMON 0 0 C283200200010 DATA 3 4 C283200200011 ANG DATA DATA-ERR C283200200012 ADEG MB/SR MB/SR C283200200013 54.0 2.84 0.12 C283200200014 65.0 3.11 0.19 C283200200015 80.0 3.51 0.23 C283200200016 90.0 3.42 0.13 C283200200017 ENDDATA 6 0 C283200200018 ENDSUBENT 17 0 C283200299999 SUBENT C2832003 20221004 20231011 C283200300001 BIB 2 13 C283200300002 REACTION (1-H-1(P,EL)1-H-1,,DA) C283200300003 METHOD From 54 to 28 degrees a second method was used which C283200300004 counted all charged particles scattered at the angle C283200300005 in question in coincidence with an incident proton C283200300006 provided that no charged particle was simultaneously C283200300007 scattered near the forward direction. This method C283200300008 depended on several facts. First, the only reaction C283200300009 which seriously interferes with detection of C283200300010 scattered protons is (a) p+p->pi+ + D. The related C283200300011 reaction (b) P+P->pi+ + P+N probably occurs less than C283200300012 1/5th as frequently. In the case of (a) all deuterons C283200300013 and in the case of (b) many protons are scattered C283200300014 forward close to the beam. C283200300015 ENDBIB 13 0 C283200300016 NOCOMMON 0 0 C283200300017 DATA 3 3 C283200300018 ANG DATA DATA-ERR C283200300019 ADEG MB/SR MB/SR C283200300020 28.0 2.86 0.20 C283200300021 43.0 3.18 0.21 C283200300022 54.0 2.80 0.21 C283200300023 ENDDATA 5 0 C283200300024 ENDSUBENT 23 0 C283200399999 SUBENT C2832004 20221004 20231011 C283200400001 BIB 2 18 C283200400002 REACTION (1-H-1(P,X)1-PP-0,,DA) C283200400003 METHOD From 54 to 28 degrees a second method was used which C283200400004 counted all charged particles scattered at the angle C283200400005 in question in coincidence with an incident proton C283200400006 provided that no charged particle was simultaneously C283200400007 scattered near the forward direction. This method C283200400008 depended on several facts. First, the only reaction C283200400009 which seriously interferes with detection of C283200400010 scattered protons is (a) P+P->pi+ + D. The related C283200400011 reaction (b) P+P->pi+ + P+N probably occurs less than C283200400012 1/5th as frequently. In the case of (a) all deuterons C283200400013 and in the case of (b) many protons are scattered C283200400014 forward close to the beam. In a reversal of this C283200400015 method the pi+ production cross section at 45 C283200400016 laboratory angle was measured by counting charged C283200400017 particles scattered in coincidence with an incident C283200400018 proton and with a charged particle scattered C283200400019 simultaneously near the forward direction. C283200400020 ENDBIB 18 0 C283200400021 NOCOMMON 0 0 C283200400022 DATA 3 1 C283200400023 ANG DATA DATA-ERR C283200400024 ADEG MB/SR MB/SR C283200400025 80.0 0.163 0.024 C283200400026 ENDDATA 3 0 C283200400027 ENDSUBENT 26 0 C283200499999 ENDENTRY 4 0 C283299999999