ENTRY C2832 20221004 C224C2832000 1 SUBENT C2832001 20221004 C224C2832001 1 BIB 8 9 C2832001 2 TITLE P-P Elastic Scattering and Pion Production at 419 Mev C2832001 3 AUTHOR (J.Marshall, L.Marshall,V.A.Nedzel) C2832001 4 REFERENCE (J,PR,93,927(M2),1954) C2832001 5 #doi:10.1103/PhysRev.93.909 C2832001 6 INSTITUTE (1USACHI) C2832001 7 FACILITY (SYNCY,1USACHI) The Chicago synchrocyclotron. C2832001 8 ERR-ANALYS (DATA-ERR) No details on sources of uncertainties. C2832001 9 STATUS (TABLE) page 927 of J,PR,93,927(M2),1954. C2832001 10 HISTORY (20221004C) BP C2832001 11 ENDBIB 9 0 C2832001 12 COMMON 1 3 C2832001 13 EN C2832001 14 MEV C2832001 15 419.0 C2832001 16 ENDCOMMON 3 0 C2832001 17 ENDSUBENT 16 0 C283200199999 SUBENT C2832002 20221004 C224C2832002 1 BIB 2 6 C2832002 2 REACTION (1-H-1(P,EL)1-H-1,,DA) C2832002 3 METHOD The differential p-p elastic scattering cross section C2832002 4 at 419 MEV was measured from 90 to 54 degrees C2832002 5 baricentral angle by the method in which the two C2832002 6 elastically scattered protons were detected in C2832002 7 coincidence with the incident proton. C2832002 8 ENDBIB 6 0 C2832002 9 NOCOMMON 0 0 C2832002 10 DATA 3 4 C2832002 11 ANG DATA DATA-ERR C2832002 12 ADEG MB/SR MB/SR C2832002 13 54.0 2.84 0.12 C2832002 14 65.0 3.11 0.19 C2832002 15 80.0 3.51 0.23 C2832002 16 90.0 3.42 0.13 C2832002 17 ENDDATA 6 0 C2832002 18 ENDSUBENT 17 0 C283200299999 SUBENT C2832003 20221004 C224C2832003 1 BIB 2 13 C2832003 2 REACTION (1-H-1(P,EL)1-H-1,,DA) C2832003 3 METHOD From 54 to 28 degrees a second method was used which C2832003 4 counted all charged particles scattered at the angle C2832003 5 in question in coincidence with an incident proton C2832003 6 provided that no charged particle was simultaneously C2832003 7 scattered near the forward direction. This method C2832003 8 depended on several facts. First, the only reaction C2832003 9 which seriously interferes with detection of C2832003 10 scattered protons is (a) p+p->pi+ + D. The related C2832003 11 reaction (b) P+P->pi+ + P+N probably occurs less than C2832003 12 1/5th as frequently. In the case of (a) all deuterons C2832003 13 and in the case of (b) many protons are scattered C2832003 14 forward close to the beam. C2832003 15 ENDBIB 13 0 C2832003 16 NOCOMMON 0 0 C2832003 17 DATA 3 3 C2832003 18 ANG DATA DATA-ERR C2832003 19 ADEG MB/SR MB/SR C2832003 20 28.0 2.86 0.20 C2832003 21 43.0 3.18 0.21 C2832003 22 54.0 2.80 0.21 C2832003 23 ENDDATA 5 0 C2832003 24 ENDSUBENT 23 0 C283200399999 SUBENT C2832004 20221004 C224C2832004 1 BIB 2 18 C2832004 2 REACTION (1-H-1(P,X)1-PP-0,,DA) C2832004 3 METHOD From 54 to 28 degrees a second method was used which C2832004 4 counted all charged particles scattered at the angle C2832004 5 in question in coincidence with an incident proton C2832004 6 provided that no charged particle was simultaneously C2832004 7 scattered near the forward direction. This method C2832004 8 depended on several facts. First, the only reaction C2832004 9 which seriously interferes with detection of C2832004 10 scattered protons is (a) P+P->pi+ + D. The related C2832004 11 reaction (b) P+P->pi+ + P+N probably occurs less than C2832004 12 1/5th as frequently. In the case of (a) all deuterons C2832004 13 and in the case of (b) many protons are scattered C2832004 14 forward close to the beam. In a reversal of this C2832004 15 method the pi+ production cross section at 45 C2832004 16 laboratory angle was measured by counting charged C2832004 17 particles scattered in coincidence with an incident C2832004 18 proton and with a charged particle scattered C2832004 19 simultaneously near the forward direction. C2832004 20 ENDBIB 18 0 C2832004 21 NOCOMMON 0 0 C2832004 22 DATA 3 1 C2832004 23 ANG DATA DATA-ERR C2832004 24 ADEG MB/SR MB/SR C2832004 25 80.0 0.163 0.024 C2832004 26 ENDDATA 3 0 C2832004 27 ENDSUBENT 26 0 C283200499999 ENDENTRY 4 0 C283299999999