ENTRY C2831 20221004 C224C2831000 1 SUBENT C2831001 20221004 C224C2831001 1 BIB 11 35 C2831001 2 TITLE P-P Differential Elastic Scattering Cross Sections at C2831001 3 144, 271, and 429 Mev C2831001 4 AUTHOR (V.A.Nedzel,J.Marshall, L.Marshall) C2831001 5 REFERENCE (J,PR,93,927(M1),1954) C2831001 6 #doi:10.1103/PhysRev.93.909 C2831001 7 INSTITUTE (1USACHI) C2831001 8 FACILITY (SYNCY,1USACHI) The Chicago synchrocyclotron. C2831001 9 DETECTOR (TELES,SCIN) Five scintillation counters. C2831001 10 SAMPLE The scatterer was a 4-in. vertical cylinder of liquid C2831001 11 hydrogen contained in styrofoam walls. C2831001 12 METHOD (COINC) The p-p differential elastic scattering cross C2831001 13 section at 90 degree baricentral angle has been C2831001 14 measured for three proton energies and has been found C2831001 15 to be independent of energy in this range. Sizable C2831001 16 intensities of proton beams of a wide range in energy C2831001 17 were obtained by the proper azimuthal positioning of C2831001 18 a beryllium scattering target at 76 in. radius in the C2831001 19 Chicago synchrocyclotron. The protons collimated by a C2831001 20 channel in the heavy shield were of definite energy C2831001 21 for a given target position. They were further C2831001 22 analyzed by an additional magnet. The analyzed C2831001 23 collimated beam was defined and measured before the C2831001 24 scatterer by a telescope of 2 scintillation counters C2831001 25 (1-2). Two scintillation counters (3 and 4) were C2831001 26 placed on opposite sides of the beam, connected in C2831001 27 coincidence with counters 1 and 2 in such a way that C2831001 28 they counted the two elastically scattered protons in C2831001 29 coincidence with the incident proton. C2831001 30 ERR-ANALYS (DATA-ERR) No details on sources of uncertainties. C2831001 31 CORRECTION In order to avoid counting loss corrections, a fifth C2831001 32 counter which counted protons scattered out of the C2831001 33 main beam was used to normalize the incident flux at C2831001 34 low-beam intensities and to normalize the quadruple C2831001 35 coincidence rate at high beam intensity. C2831001 36 HISTORY (20221004C) BP C2831001 37 ENDBIB 35 0 C2831001 38 COMMON 1 3 C2831001 39 ANG C2831001 40 ADEG C2831001 41 90.0 C2831001 42 ENDCOMMON 3 0 C2831001 43 ENDSUBENT 42 0 C283100199999 SUBENT C2831002 20221004 C224C2831002 1 BIB 2 2 C2831002 2 REACTION (1-H-1(P,EL)1-H-1,,DA) C2831002 3 STATUS (TABLE) page 927 of J,PR,93,927(M1),1954. C2831002 4 ENDBIB 2 0 C2831002 5 NOCOMMON 0 0 C2831002 6 DATA 3 3 C2831002 7 EN DATA DATA-ERR C2831002 8 MEV MB/SR MB/SR C2831002 9 144.0 3.21 0.11 C2831002 10 271.0 3.67 0.34 C2831002 11 429.0 3.42 0.13 C2831002 12 ENDDATA 5 0 C2831002 13 ENDSUBENT 12 0 C283100299999 ENDENTRY 2 0 C283199999999