ENTRY M0595 20230614 M125M0595 0 1 SUBENT M0595001 20230614 M125M0595 1 1 BIB 14 47 M0595 1 2 TITLE 40Ca(gamma,p0)39K reaction for Egamma = 100 - 300 MeV. M0595 1 3 AUTHOR (M.J.Leitch,F.C.Lin,J.L.Matthews,W.W.Sapp,C.P.Sargent, M0595 1 4 D.J.S.Findlay,R.O.Owens,B.L.Roberts) M0595 1 5 REFERENCE (J,PR/C,33,1511,1986) M0595 1 6 INSTITUTE (1USAMIT,2UK GLS,1USABST) M0595 1 7 FACILITY (LINAC,1USAMIT) M0595 1 8 INC-SOURCE (BRST) M0595 1 9 METHOD (MAGFR) 900 MeV/C magnetic spectrometer. M0595 1 10 DETECTOR (COIN,MWDC,SCIN) M0595 1 11 ANALYSIS The (gamma,p) cross sections leading to the 39K ground M0595 1 12 state were extracted by fitting the measured M0595 1 13 photoproton energy spectra with a calculated spectrum M0595 1 14 containing the (unknown) cross sections and the M0595 1 15 (known) bremsstrahlung spectrum. M0595 1 16 ERR-ANALYS (DATA-ERR) The errors quoted are the statistical M0595 1 17 uncertainties combined with those systematic errors M0595 1 18 which vary from run to run. These include M0595 1 19 * uncertainty in the dead time correction and an M0595 1 20 energy dependent error, which varies from 1.7% M0595 1 21 for Egamma < 151 MeV to 5.4 % at Egamma = 302 M0595 1 22 MeV, M0595 1 23 * uncertainty in the correction for nuclear M0595 1 24 interactions of the protons in the detector M0595 1 25 system. M0595 1 26 (ERR-1) systematic uncertainty of about 4% arising M0595 1 27 from the uncertainty in the incident photon flux. M0595 1 28 CORRECTION The corrections for dead time and for nuclear M0595 1 29 interactions of the protons in the detector system. M0595 1 30 REL-REF (R,,M.J.Leitch+,J,PR/C,31,1633,1985) M0595 1 31 COMMENT The experiment features were taken from the paper of M0595 1 32 REL-REF. M0595 1 33 The differential cross section of the M0595 1 34 40Ca(gamma,p0)39K process has been measured in the M0595 1 35 energy range Egamma = 100 - 300 MeV at laboratory M0595 1 36 angles of 45, 90, and 135 degree. The cross section M0595 1 37 for the (gamma,p) reactions leaving 39K in its ground M0595 1 38 state was extracted from the tip region of the proton M0595 1 39 spectra measured at a series of bremsstrahlung M0595 1 40 end-point energies. The data were compared with a M0595 1 41 distorted-wave impulse-approximation calculation M0595 1 42 based on a direct,single-particle knockout mechanism. M0595 1 43 HISTORY (19990408C) Data were compiled at the USA BNL NNDC by M0595 1 44 V.V.Varlamov. M0595 1 45 (20190626A) Corrected by SD and VV: INSTITUTE, M0595 1 46 ERR-ANALYS, STATUS, COMMON, SUBENTS 002 - 004 merged. M0595 1 47 (20230614A) Corrected by V.Varlamov: COMMON in SUBENT M0595 1 48 002. M0595 1 49 ENDBIB 47 0 M0595 1 50 COMMON 1 3 M0595 1 51 ERR-1 M0595 1 52 PER-CENT M0595 1 53 4. M0595 1 54 ENDCOMMON 3 0 M0595 1 55 ENDSUBENT 54 0 M0595 199999 SUBENT M0595002 20230614 M125M0595 2 1 BIB 3 6 M0595 2 2 REACTION (20-CA-40(G,P)19-K-39,PAR,DA,,BRS) M0595 2 3 STATUS (TABLE) Data from Table I of Phys.Rev.,C33(1986)1511. M0595 2 4 HISTORY (20190626A) Corrected by SD and VV: COMMON (E-EXC -> M0595 2 5 E-LVL), DATA-ERR -> ERR-S, DATA-MIN -> DATA-MAX, DATA M0595 2 6 substituted. M0595 2 7 (20230614A) Corrected by V.Varlamov: COMMON. M0595 2 8 ENDBIB 6 0 M0595 2 9 COMMON 1 3 M0595 2 10 E-LVL M0595 2 11 MEV M0595 2 12 0.0 M0595 2 13 ENDCOMMON 3 0 M0595 2 14 DATA 5 22 M0595 2 15 ANG EN DATA DATA-ERR DATA-MAX M0595 2 16 ADEG MEV NB/SR NB/SR NB/SR M0595 2 17 45. 101.5 349. 25. M0595 2 18 45. 126.4 77. 9. M0595 2 19 45. 151.3 63. 9. M0595 2 20 45. 176.2 29.7 4.4 M0595 2 21 45. 201.2 27.7 4.5 M0595 2 22 45. 221.2 22.4 3.7 M0595 2 23 45. 241.2 8.6 4.1 M0595 2 24 45. 271.2 7.0 1.8 M0595 2 25 45. 301.4 3.2 1.2 M0595 2 26 90. 101.5 93. 11. M0595 2 27 90. 126.4 35.9 4.8 M0595 2 28 90. 151.3 5.0 1.4 M0595 2 29 90. 176.2 1.3 .7 M0595 2 30 90. 201.2 .36 .36 M0595 2 31 90. 241.2 .54 .46 M0595 2 32 90. 281.3 .29 .24 M0595 2 33 135. 101.5 10.2 1.8 M0595 2 34 135. 126.4 2.6 .7 M0595 2 35 135. 151.3 .77 .39 M0595 2 36 135. 176.2 .52 .26 M0595 2 37 135. 201.2 .13 .09 M0595 2 38 135. 221.2 0.035 M0595 2 39 ENDDATA 24 0 M0595 2 40 ENDSUBENT 39 0 M0595 299999 NOSUBENT M0595003 20190626 M101M0595 3 1 NOSUBENT M0595004 20190626 M101M0595 4 1 ENDENTRY 4 0 M059599999999