ENTRY C2639 20210614 C205C263900000001 SUBENT C2639001 20210614 C205C263900100001 BIB 7 8 C263900100002 TITLE Scattering of Negative Pions by Hydrogen C263900100003 AUTHOR (E.Fermi,M.Glicksman,R.Martin,D.Nagle) C263900100004 REFERENCE (J,PR,92,161,1953) C263900100005 #doi:10.1103/PhysRev.92.161 C263900100006 REL-REF (I,C2635001,H.L.Anderson+,J,PR,91,155,1953) C263900100007 INSTITUTE (1USACHI) C263900100008 FACILITY (SYNCY,1USACHI) The 450-MeV synchrocyclotron. C263900100009 HISTORY (20210614C) BP C263900100010 ENDBIB 8 0 C263900100011 NOCOMMON 0 0 C263900100012 ENDSUBENT 11 0 C263900199999 SUBENT C2639002 20210614 C205C263900200001 BIB 6 23 C263900200002 REACTION (1-H-1(PIP,EL)1-H-1,,DA) C263900200003 SAMPLE A thin-walled liquid hydrogen Dewar. C263900200004 DETECTOR (SCIN) Scintillation counters. Counter No. 1 in these C263900200005 experiments was a liquid scintillator with an overall C263900200006 thickness of 1/4 in., and counter No. 2 was a C263900200007 plastic scintillator 1/8 in. thick. C263900200008 METHOD (COINC) A beam of pions of the desired energy passes C263900200009 through two scintillation counters and after that C263900200010 traverses a thin-walled liquid hydrogen Dewar. The C263900200011 scattered particles are detected by two other C263900200012 counters No. 3 and No. 4. The double coincidences of C263900200013 No. 1 and No. 2 give a measure of the number of C263900200014 primary particles. The, quadruple coincidences of the C263900200015 four counters give a measure of the number of C263900200016 scattered particles that are detected by the C263900200017 detecting counters No. 3 and No.4. C263900200018 ERR-ANALYS (DATA-ERR) The errors listed in this table are C263900200019 compounded out of the statistical error plus a 10 C263900200020 percent error that we estimate may be due to our C263900200021 imperfect knowledge of the sensitivity of the C263900200022 detecting equipment. C263900200023 (ERR-1) Imperfect knowledge of the detecting equipment.C263900200024 STATUS (TABLE) Table III, page 162. C263900200025 ENDBIB 23 0 C263900200026 COMMON 1 3 C263900200027 ERR-1 C263900200028 PER-CENT C263900200029 10.0 C263900200030 ENDCOMMON 3 0 C263900200031 DATA 4 9 C263900200032 EN ANG DATA DATA-ERR C263900200033 MEV ADEG MB/SR MB/SR C263900200034 169.0 45.0 2.56 0.35 C263900200035 169.0 90.0 0.69 0.16 C263900200036 169.0 135.0 1.51 0.22 C263900200037 194.0 45.0 3.28 0.50 C263900200038 194.0 90.0 1.08 0.20 C263900200039 194.0 135.0 1.62 0.27 C263900200040 210.0 45.0 3.49 0.53 C263900200041 210.0 90.0 1.47 0.29 C263900200042 210.0 135.0 1.64 0.36 C263900200043 ENDDATA 11 0 C263900200044 ENDSUBENT 43 0 C263900299999 SUBENT C2639003 20210614 C205C263900300001 BIB 7 25 C263900300002 REACTION (1-H-1(PIN,X)0-G-0,,DA) C263900300003 SAMPLE A thin-walled liquid hydrogen Dewar. C263900300004 DETECTOR (SCIN) Scintillation counters. Counter No. 1 in these C263900300005 experiments was a liquid scintillator with an overall C263900300006 thickness of 1/4 in., and counter No. 2 was a C263900300007 plastic scintillator 1/8 in. thick. C263900300008 METHOD (COINC) A beam of pions of the desired energy passes C263900300009 through two scintillation counters and after that C263900300010 traverses a thin-walled liquid hydrogen Dewar. The C263900300011 scattered particles are detected by two other C263900300012 counters No. 3 and No. 4. The double coincidences of C263900300013 No. 1 and No. 2 give a measure of the number of C263900300014 primary particles. The, quadruple coincidences of the C263900300015 four counters give a measure of the number of C263900300016 scattered particles that are detected by the C263900300017 detecting counters No. 3 and No.4. C263900300018 ERR-ANALYS (DATA-ERR) The errors listed in this table are C263900300019 compounded out of the statistical error plus a 10 C263900300020 percent error that we estimate may be due to our C263900300021 imperfect knowledge of the sensitivity of the C263900300022 detecting equipment. C263900300023 (ERR-1) Imperfect knowledge of the detecting equipment.C263900300024 COMMENT Compiler's comment: Neutral pion decays into two C263900300025 photons that were detected. C263900300026 STATUS (TABLE) Table III, page 162. C263900300027 ENDBIB 25 0 C263900300028 COMMON 1 3 C263900300029 ERR-1 C263900300030 PER-CENT C263900300031 10.0 C263900300032 ENDCOMMON 3 0 C263900300033 DATA 4 9 C263900300034 EN ANG DATA DATA-ERR C263900300035 MEV ADEG MB/SR MB/SR C263900300036 169.0 45.0 8.05 0.94 C263900300037 169.0 90.0 5.37 0.63 C263900300038 169.0 135.0 5.95 0.72 C263900300039 194.0 45.0 9.87 1.23 C263900300040 194.0 90.0 5.53 0.74 C263900300041 194.0 135.0 6.41 0.77 C263900300042 210.0 45.0 9.43 1.27 C263900300043 210.0 90.0 2.99 0.66 C263900300044 210.0 135.0 3.31 0.77 C263900300045 ENDDATA 11 0 C263900300046 ENDSUBENT 45 0 C263900399999 SUBENT C2639004 20210614 C205C263900400001 BIB 5 9 C263900400002 REACTION (1-H-1(PIN,X)0-G-0,,SIG) C263900400003 ANALYSIS From the differential cross sections in the C263900400004 laboratory system one obtains immediately by C263900400005 integration the total cross sections. C263900400006 ERR-ANALYS (DATA-ERR) No details on sources of uncertainties. C263900400007 COMMENT Compiler's comment: Neutral pion decays into two C263900400008 photons that were detected. C263900400009 STATUS (DEP,C2639003) C263900400010 (TABLE) Table IV, page 162. C263900400011 ENDBIB 9 0 C263900400012 NOCOMMON 0 0 C263900400013 DATA 3 3 C263900400014 EN DATA DATA-ERR C263900400015 MEV MB MB C263900400016 169.0 82.8 5.9 C263900400017 194.0 93.9 7.2 C263900400018 210.0 69.1 7.2 C263900400019 ENDDATA 5 0 C263900400020 ENDSUBENT 19 0 C263900499999 ENDENTRY 4 0 C263999999999