ENTRY C2606 20210504 C204C260600000001 SUBENT C2606001 20210504 C204C260600100001 BIB 9 23 C260600100002 TITLE Experiments on Proton-Proton Scattering from 120 to C260600100003 345 MeV C260600100004 AUTHOR (O.Chamberlain,E.Segre,C.Wiegand) C260600100005 REFERENCE (J,PR,83,923,1951) Main reference. C260600100006 #doi:10.1103/PhysRev.83.923 C260600100007 (J,PR,81,284,1951) Second preliminary paper. C260600100008 #doi:10.1103/PhysRev.81.284.2 C260600100009 (J,PR,79,81,1950) First preliminary paper. C260600100010 #doi:10.1103/PhysRev.79.81 C260600100011 INSTITUTE (1USABRK) C260600100012 FACILITY (CYCLO,1USABRK) The 184-inch Berkeley cyclotron. C260600100013 DETECTOR (SCIN,IOCH) C260600100014 METHOD (REC) The beam deflected from the cyclotron and C260600100015 collimated through the shielding walls impinges on C260600100016 the target T (a foil of polyethylene). The protons, C260600100017 scattered and recoil, are detected in the stilbene C260600100018 viewed by a iP21 photomultiplier tube. The beam is C260600100019 monitored by measuring the ionization produced in a C260600100020 shallow ionization chamber full of argon which has C260600100021 (in turn) been calibrated against a faraday cup. C260600100022 ERR-ANALYS (ERR-S) Errors indicated are standard deviations from C260600100023 counting statistics only. C260600100024 HISTORY (20210504C) BP C260600100025 ENDBIB 23 0 C260600100026 NOCOMMON 0 0 C260600100027 ENDSUBENT 26 0 C260600199999 SUBENT C2606002 20210504 C204C260600200001 BIB 4 11 C260600200002 REACTION (1-H-1(P,EL)1-H-1,,DA) C260600200003 SAMPLE The targets used were foils of polyethylene (CH2) C260600200004 which weighed 283 mg/cm2. The number of of target C260600200005 atoms per cm2 along the beam direction is C260600200006 N=0.283*2*6.023*10**23/(14.03*sin 54.1 degree) = C260600200007 3.000*10**22 target protons/cm2. C260600200008 METHOD (COINC) The full beam energy with the coincidence C260600200009 counting technique (method II) and polyethylene C260600200010 targets. C260600200011 STATUS (TABLE) Table I page 927 of the main reference. C260600200012 (COREL,C2606004) Results obtained with Method I C260600200013 ENDBIB 11 0 C260600200014 COMMON 1 3 C260600200015 EN C260600200016 MEV C260600200017 345. C260600200018 ENDCOMMON 3 0 C260600200019 DATA 3 19 C260600200020 ANG-CM DATA-CM ERR-S C260600200021 ADEG MB/SR MB/SR C260600200022 35.6 4.31 0.21 C260600200023 36.4 3.93 0.15 C260600200024 43.4 3.79 0.15 C260600200025 44.0 4.17 0.13 C260600200026 45.8 3.64 0.07 C260600200027 46.1 3.99 0.11 C260600200028 52.4 3.77 0.10 C260600200029 60.8 3.83 0.13 C260600200030 64.0 3.55 0.11 C260600200031 64.0 3.74 0.14 C260600200032 70.6 3.67 0.16 C260600200033 72.2 3.67 0.11 C260600200034 80.2 3.95 0.12 C260600200035 87.6 3.86 0.10 C260600200036 88.2 3.91 0.08 C260600200037 88.2 3.70 0.08 C260600200038 88.6 3.85 0.06 C260600200039 88.6 3.54 0.09 C260600200040 89.2 4.15 0.36 C260600200041 ENDDATA 21 0 C260600200042 ENDSUBENT 41 0 C260600299999 SUBENT C2606003 20210504 C204C260600300001 BIB 5 14 C260600300002 REACTION (1-H-1(P,EL)1-H-1,,DA) C260600300003 SAMPLE The targets used were foils of polyethylene (CH2) C260600300004 which weighed 283 mg/cm2. The number of of target C260600300005 atoms per cm2 along the beam direction is C260600300006 N=0.283*2*6.023*10**23/(14.03*sin 54.1 degree) = C260600300007 3.000*10**22 target protons/cm2. C260600300008 METHOD (COINC) The reduced beam energies with the coincidence C260600300009 counting technique (method II) and polyethylene C260600300010 targets. C260600300011 COMMENT Compiler's comment: This table contains double C260600300012 results for a number of energy/angle combinations C260600300013 which are apparently not explained in the article C260600300014 (e.g. the first 2 values in the table). C260600300015 STATUS (TABLE) Table III page 929 of the main reference. C260600300016 ENDBIB 14 0 C260600300017 NOCOMMON 0 0 C260600300018 DATA 4 22 C260600300019 EN ANG-CM DATA-CM ERR-S C260600300020 MEV ADEG MB/SR MB/SR C260600300021 118. 89.2 3.95 0.12 C260600300022 120. 63.0 3.67 0.56 C260600300023 120. 63.0 4.40 0.50 C260600300024 120. 77.8 4.25 0.33 C260600300025 120. 85.2 3.85 0.25 C260600300026 163. 60.8 4.08 0.45 C260600300027 163. 88.6 3.88 0.26 C260600300028 164. 59.9 3.38 0.23 C260600300029 164. 88.8 3.54 0.35 C260600300030 164. 90.0 3.60 0.17 C260600300031 247. 62.0 4.38 0.27 C260600300032 247. 89.6 3.56 0.27 C260600300033 247. 89.6 3.28 0.16 C260600300034 249. 87.4 3.69 0.10 C260600300035 250. 47.4 3.23 0.29 C260600300036 250. 47.4 3.97 0.51 C260600300037 250. 64.6 3.84 0.20 C260600300038 250. 78.4 3.53 0.18 C260600300039 250. 78.4 3.69 0.15 C260600300040 250. 87.2 3.67 0.21 C260600300041 250. 87.6 3.95 0.22 C260600300042 250. 87.6 3.59 0.21 C260600300043 ENDDATA 24 0 C260600300044 ENDSUBENT 43 0 C260600399999 SUBENT C2606004 20210504 C204C260600400001 BIB 3 12 C260600400002 REACTION (1-H-1(P,EL)1-H-1,,DA) C260600400003 METHOD (COINC) The full beam energy using a liquid hydrogen C260600400004 target. Only the proton at the smaller angle from the C260600400005 beam was detected (method I). The measurement C260600400006 proceeded as follows: first, the coincidence counting C260600400007 rate was determined with T full of air, next with T C260600400008 full of liquid hydrogen boiling at atmospheric C260600400009 pressure, and finally the liquid hydrogen was C260600400010 evaporated and the background redetermined. This C260600400011 cycle was repeated twice. C260600400012 STATUS (TABLE) Table II, page 928 of the main reference. C260600400013 (COREL,C2606002) Results obtained with Method II C260600400014 ENDBIB 12 0 C260600400015 COMMON 1 3 C260600400016 EN C260600400017 MEV C260600400018 345. C260600400019 ENDCOMMON 3 0 C260600400020 DATA 3 12 C260600400021 ANG-CM DATA-CM ERR-S C260600400022 ADEG MB/SR MB/SR C260600400023 11.3 5.1 0.36 C260600400024 11.3 5.38 0.49 C260600400025 15.2 3.71 0.22 C260600400026 15.2 3.21 0.17 C260600400027 21.1 3.51 0.10 C260600400028 21.7 3.06 0.15 C260600400029 32.5 3.52 0.09 C260600400030 33.1 3.51 0.11 C260600400031 42.8 3.48 0.10 C260600400032 42.8 3.40 0.08 C260600400033 53.2 3.40 0.08 C260600400034 53.2 3.28 0.10 C260600400035 ENDDATA 14 0 C260600400036 ENDSUBENT 35 0 C260600499999 ENDENTRY 4 0 C260699999999